Solid state relay symbol 49KB electricity current, Circuit diagram Printed circuit board Electronic circuit, tecnologia, angle, text, electrical Wires Cable png 1051x1500px 698. industrial electrical symbols . Nov 27, 2021 · Optocouplers and solid-state relays: optocouplers are used to switch solid-state relays like Triac and SCR. One disadvantage of solid state relays is their tendency to fail “shorted” on their outputs, while electromechanical relay contacts tend to fail “open. , A shading coil is used to ___. Bimetallic Thermal Overload Relay: How it Works Discover all CAD files of the "Solid state relays (SSR)" category from Supplier-Certified Catalogs SOLIDWORKS, Inventor, Creo, CATIA, Solid Edge, autoCAD, Revit and many more CAD software but also as STEP, STL, IGES, STL, DWG, DXF and more neutral CAD formats. Nov 9, 2022 · There are several steps to this. Of course, solid state relays have more action modes, such as: 1)Asynchronous mode 2)Synchronous mode 3)Voltage zero or peak sync mode 4)Phase angle mode 5)Pulse mode §3. Study with Quizlet and memorize flashcards containing terms like An on-delay timing relay has an _-pin base (socket). g. on-delay II. You can always insert the generic device under the misc. DC Solid State Relays: Tailored for controlling DC loads, using semiconductor switches like MOSFETs. Summary Jul 15, 2024 · Can solid-state DPDT relays be used interchangeably with electromechanical DPDT relays? While solid-state DPDT relays can be used in many of the same applications as electromechanical DPDT relays, they have different characteristics, such as faster switching speeds, silent operation, and no moving parts. ABB; AC500 PLC COMM INT Modules; AC500 PLC COMM INT Modules - Layout; AC500 PLC COMM Modules The contacts of energized solid-state _ relays change state immediately when the initiating contact (external switch) is opened. Contactors are used for switching high-power equipment like motors, lights, and capacitors. Download schematic symbols, PCB footprints, pinout & datasheets for the SSR-240D50 by TE Connectivity Potter & Brumfield Relays. Nov 18, 2024 · When placing a relay in a circuit, it is always a good idea to put it between the power supply and the load, especially when using higher voltages. Download schematic symbols, PCB footprints, 3D Models, pinout & datasheet for the G3MB-202P-DC12 by Omron Automation and Safety. Discover a wide choice of wholesale relays for use in electrical circuits. I would like to use a solid state relay to switch on/off a sport welder taking 70 amps 415 volts. off-delay III. Halfgeleiderrelais. Difference between electromechanical relays and solid-state relays. It has no moving or mechanical parts so they have more lifespan as the mechanical contacts wear out with switching. use symbols electrical circuits without use of contacts, static switching control is a method of switching selector EMR (Electromechanical Relay), SSR (Solid State Relay), Hybrid Relay, Reed Relay, Electrothermal Relay, Polarized & Non-polarized Relay Breaking News 50% OFF on Pre-Launching Designs - Ending Soon Study with Quizlet and memorize flashcards containing terms like _ switching is preferred for highly inductive or capacitive loads where voltage and current are nearly 90 degrees out of phase, by switching when load voltage is at peak and load current is near zero. This symbolizes a relay that uses Oct 17, 2022 · 2. That base is a separate part, and it will hold the pin numbers that you'll need for the relay contacts. 따라서 Solid-State Relay는 "비접촉 스위치"라고도합니다. A quick internet search shows that this is a solid-state cube relay, which will need some sort of base to plug in to. The symbol for the respective devices is shown below: Figure 4. Relay Symbol Tip: If you’re looking for a symbol relay, then Capital X Panel Designer has everything you need! This program features a library filled with pre-made Relay Electrical symbols. In the railway, contacts are not referred to as normally open or closed but rather front or back contacts on an energized or deenergized relay. Disadvantages of Solid State Relays. state relays tolerate shock and vibration loads that threaten electromechanical relays. Relay Symbols and Electromagnets [ Go to Website ] 2/5 Card operated relay Relay not affected by AC Differential relay Polarized relay Magnetically polarized rela Solid-state relay Electronic relay Remnant relay AC relay Relay rest with delayed operation Relay mechanical resonance e. One thought on “ Solid State Relay ” Mohammed Shorab Khan February 15, 2016. There are two main types of relays: electromechanical relays and solid-state relays (SSR). SH relays feature a metal Solid State Relay, AC/DC - Electronic Symbols. Solid-state relays are commonly known as SSRs. Jun 14, 2024 · Relays are very important in electronics because you can use them to turn on/off high-power devices, for example, you can control air conditioners, heaters, or even entire lighting systems with just a small signal DC input. Category: Relays. Most of the time, a small voltage or current is used to switch other voltages or higher currents that may be electromechanical or fully electronic type. Mechanical and solid-state relays are all designed with one goal in mind - the input voltage activates the output contacts. Solid-state relays provide switching using solid-state components such as BJTs, thyristors, IGBTs Dec 4, 2023 · In this article, we will delve into the relay symbol and its function, providing a comprehensive understanding of this essential component. The Model 712 Series Alternating Relay is designed for duplex pumping systems where it is desirable to equalize pump run time. . The following are the several types of overload relays: Bimetallic thermal overload relays; Electronic overload relays; Eutectic overload relays; Solid state overload relays; Each of the above works on a somewhat different principle. Solid-state relays also eliminate the buzzing that can affect electromechanical relays driven by PWM and other methods intended to conserve input power. II & III only e. 48KB Feb 26, 2019 · Tableau 1 : Même si le principe de fonctionnement de base reste le même, les différents fournisseurs utilisent des désignations variées pour leurs relais statiques, certaines pour surligner l'implémentation SSR unique ou propriétaire. Solid state relay as apparatus: Where the solid-state relay is specified as apparatus with a function to the end-user, requirements on EMC are given in this document. 25Hz Step relay Mechanical interlock relay Intermittent As you may already know, the millivoltage signals, such as the signals from the Thermocouples can be corrupted by the electrical noise. 5 mm 8/29 3RF20 solid-state relays, single-phase, 45 mm 8/32 3RF22 solid-state relays, three-phase, 45 mm 8/34 Solid-state contactors 3RF23 solid-state contactors, single-phase 8/36 3RF24 solid-state contactors, three-phase 8/39 3RF34 solid-state contactors, three-phase 8/41 Jan 2, 2024 · Solid state relays are switching relays that do not require the use of any mechanical parts. Single-Phase Solid-State Relay: used to control single phase loads. Dec 3, 2021 · In a Solid-state (SSR) relay we use semiconductors instead of mechanical parts as used in electrothermal and electromechanical relays. A solid state relay is a device that controls the flow of electricity with a low-voltage signal. 4 Solid-State Relays (SSR) The term solid-state has its origin in the early days of semiconductor technology, which referred to the control of electrons within the material (e. Relays allow complete electrical isolation between the power (supply) circuit and the control circuit. interval V. Three Phase Solid State Relay: Used to control three-phase loads. They are a very important part of the switching circuit as they provide a very high value of resistance and isolate input from the output. Applications. Feb 26, 2019 · The solid state relay (SSR) is a safe, versatile, rugged on/off switch between a low level control signal and an AC/DC load, but needs to be applied carefully. CEP7 Solid State OL Relays . Hybrid Solid-State Relay (HSSR) Symbol Description ADW11Description: Panasonic, 8A/16A, Small Polarized Latching Power Relays, Single coil, 1 Form AKeys: SPST 1P1TDatasheet: https://www. The switch is included with a single input and two output sections at the edges. Aug 26, 2023 · Ein SSR (Solid State Relay) ist ein elektronisches Schaltgerät, das die Funktionen eines herkömmlichen elektromagnetischen Relais übernimmt, jedoch Halbleiterkomponenten wie Transistoren oder Triacs anstelle eines mechanischen Kontaktsystems verwendet. , Special _ must be used to protect an SSR in a shorted condition, Identify the NEMA ladder diagram symbols and letter code Oct 28, 2014 · This model is based off a common solid state relay I picked up on a popular online auction site from a seller located in China. Study with Quizlet and memorize flashcards containing terms like Which of the following is a probable cause of relay-controlled equipment failing to start when the contactor is closed?, Contacts that are apart when the relay is de-energized are said to be ___. D1 prevents the 28V load supply voltage from shorting into the (non-isolated) 24V control voltage when SW1 is pressed, D2 prevents control voltage from trying to power the load. The main part or component of an Electromagnetic Relay is the electromagnetic coil which attracts the metal contacts to connect and disconnect the circuit. Solid State Relays FAQs How does thermal management impact the performance and longevity of solid state relays? Thermal management is an integral part of the design for SSRs. The main difference is that the SSR has control pins instead of coil pins. Zbudowane są z elementów półprzewodnikowych, takich jak tranzystory, tyrystory lub triaki, za pomocą których realizowana jest funkcja przekaźnikowa. recycle Select one: a. When drawing circuits with more than one SSR, the relay symbols must be marked as SSR1, SSR2, and so on. 이전의 "코일 리드 접점"계전기, 즉 전자 기계 계전기 (EMR)에 비해 SSR 내부에 가동 기계 부품이 없으며 SSR의 전환 과정에서 기계적 동작도 없습니다. Transformer. Let’s have a look at it in the parts below. Symbol of Solid State Relay. Solid-State Relay: A solid-state relay is represented by a rectangle with a diagonal line and two perpendicular lines on either side. Solid State Relay, DC - Electronic Symbols. Hier wird das Solid-State-Relais erklärt, das in diesem Stadium arbeitet. Control, Timing & Solid State Relays Pilot Devices Pilot Devices Infinitum Motor+Drive Symbols Symbols Chevron Down . The term ‘solid state relay’ is actually a fairly generic one, and can, in fact, refer to all manner of different relay components and configurations used to May 30, 2021 · The movable contact relays such as mechanical relay may be considered in some respects to use old technology. : +33 (0) 4 77 53 90 20 Sep 26, 2017 · Another type of SSR, called a ‘random turn on’ solid state relay, is used to implement dimming. Solid state relay. Solid State Relay is also known as SSR. Square D manufactures three types of overload relays, the melting alloy, the bimetallic, and solid state. A single light-emitting diode (LED) is employed for triggering both LASCRs. See the relay symbol, terminology, working principle and types, including solid state relay. 固態繼電器（ Solid State Relay ，縮寫：SSR）是由半導體控制負載流經固態開關的無接點繼電器，輸入端係利用發光二極體、光電晶體、功率晶體等半導體電路所組成光耦合器，經內部控制電路觸發輸出端的矽控整流器 Sep 17, 2009 · A solid-state relay using two LASCRs in reverse parallel is shown in figure. A diamond is a widely recognized symbol used for denoting. They serve the same function as an electromechanical relay , but solid-state electronics contain no moving parts and have a longer operational lifetime. celduc r e l a i s Rue Ampère B. In practice, you use them the same way. Oct 4, 2022 · The main difference between an electrical mechanical relay and a solid state is the fact that there are no actual moving components in a SSR (just like the name suggests!) Rather than relying on a physical contact moving to complete the circuit, SSR s rely on either infra-red light emitting diodes or LED couplers to operate. I & IV only c. It is built with semiconductor material. They incorporate removable touch-proof terminal covers for versatile, easy, and quick connections. First, make an entry in the parts catalog for this part. Jul 20, 2018 · Learn how to read and understand the symbols and components of a solid state relay schematic diagram. 2. they are widely used in AC, DC power systems SMPS and other types of power supplies. By utilizing the switching characteristics of electronic components, it can make and break the circuit without contact or spark, so it is also called a "contactless switch". In simple terms, a relay is a switch that can be turned on or off by using a low voltage and can also be used to control multiple circuits with just one switch. As soon as it turns off, the output voltage also turns off Overload Relay Types. Whenever an electromechanical relay switches on or off, it produces some electrical noise in the panel, and the more the electromechanical relays are, the more could be the noise and the chance of corrupting our signals in the control system. com. But on the inside, they are very different: An electromechanical relay uses mechanical components that move. Designed for all types of loads, they provide output to 125A, 690Vac. Get in touch with us now! Please take a minute or two to complete this simple form to get reply in 24 hours, thank you! Zero crossing of Solid State Relay; Proportional Control of Solid State Relay; Random Turn-On of Solid State Relay. (Courtesy Crydom Company) 1. Stencil: Electronic Symbols. It does not have any electromagnetic coil or mechanical §3. It should be noted that: The electrode symbol should be marked separately (inside or outside the frame) next to each pin of the graphic symbol. 1Ohm, SO-4 This article aims to provide electricians, engineers, technicians, and curious homeowners with a helpful overview of common relay symbols, enabling clearer communication and safer electrical work. Resistive loads Loads of constant value resistance are probably the simplest application of solid-state relays. A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. On the other hand, it consists of semiconductor and electronic components within. 3rd Generation Fungsi solid state relay adalah seperti pada relay biasa yaitu untuk mengontrol aliran arus dengan daya besar dengan hanya arus input/ kontrol yang kecil. In terms of operation, SSRs are not very different fr om mechanical relays that have moving contacts. Difference between contactors and relays Jun 23, 2019 · I’m not sure if giuliacocioni is still here, however, if you press ‘a’ for add in Eeschema and then type “relay” you find a few libraries with relay related stuff, including a library with the name “Relay_Solidstate” which has about 80+ symbols for different solid state relays. Access the solid state relay AC schematic symbol, designed for seamless incorporation into electrical diagrams. The Solid-State relay is an electronic device that Also, the typical sold state relays can’t switch very small load currents or high frequency signals such as audio or video signal. Solid State Relay), stanowią elektroniczny odpowiednik przekaźników elektromechanicznych. The control circuit contact must be wired in series with the coil of the contactor so that the contactor will de-energize when an overload occurs. Time delay relays and solid-state timers similar and are used to provide the desired delay and timing functions. Buchholz Relay – Working Principle, Construction and Operation. It works the same way as a normal SSR, except that there is no zero-crossing detection circuit. We’ll explore symbols for various relay types—all-or-nothing, measuring, and static—looking at general forms as well as application-specific Feb 26, 2025 · While electromagnetic relays are structured around moving parts, solid state relays incorporate neither, thus further improving their functionality and durability. Relay Electronic symbol Circuit diagram Electrical Switches, relay symbol, angle, white, electronics png 1024x666px 10. In electrical schematic diagrams, the solid state relay symbol must be clearly marked, usually as a square block. Each relay is designed to switch an AC load (indicated with the ~ symbol), up to 240 volts with no more than 2. Solid-State Relay An SSR (solid-state relay) is a new type of contactless switching component composed of solid-state electronic components. Tetapi karena beberapa kelebihan SSR dibandingkan relay konvensional maka sangat cocok digunakan pada rangkaian yang memerlukan proses repon switching on-off sangat cepat serta pada rangkaian 전통적인 기계식 릴레이의 기능과 같습니다. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Small and compact, solid state relays can help increase the service life of electrical applications by reducing maintenance time and costs. and more. Or better yet, insert it, explode it, and change the TAG1 and FAMILY values to SSR for JIC or N if IEC. Reed Relay: A reed relay is depicted by a rectangle with a diagonal line and an arrow pointing towards one of its corners. Relays are more commonly used in control automation and protection circuits. Two LASCRs are connected in reverse parallel so as to obtain conduction in both half cycles of the applied supply voltage Vg. This is in contrast to controlling the electrons outside the material (in the electron tube between cathode and anode!). I & V only b. See full list on electronics-tutorials. Feb 23, 2024 · Within the AC solid state relays, you can find two types based on the number of phases it can control. . P. Difference between earth leakage relay and earth fault relay. which symbol in figure 1 represents a normally open,timed-open (NOTO) contact of Solid-state relays 3RF21 solid-state relays, single-phase, 22. pan Jan 13, 2020 · Przekaźniki półprzewodnikowe, określane także jako elektroniczne lub SSR (ang. A suitable heatsink that clips to the back of this relay was posted by Fernando Funtowicz and can be found here: SSR Heatsink. The latching relay symbol is shown as follows: Latching Relay Symbol Solid State Relays. ws Sep 13, 2023 · Learn about relay, a device that controls a switch position using a low-current signal. IIn electric circuits, the symbol of solid state relay typically has these features: Dec 4, 2024 · Solid State Relay Symbol. , Select (as required) the NEMA or industry standard symbol for an NOTC set of timing relay contacts. Control, Timing & Solid State Relays Jun 16, 2017 · This article provides an introduction to the basic operation of solid-state relays with a focus on the output devices in today’s SSRs. Note also, that the electrodes are indicated by their symbols, next to the relay symbols. Unlike electromechanical type, they do not posses any mechanically moving parts. Jan 5, 2023 · Common voltages for DC input include 5V, 12V and 24V DC solid state relays, while widely available examples of AC solid state relays are often based around 120V or 240V AC input. Sep 9, 2024 · A Solid State Relay has so many advantages over an Electromagnetic Relay such as very fast switching, no latching, low power loss, high electrical insulation, etc. Mar 8, 2024 · There are two main types of relays: solid-state relay (SSR) and electromechanical relay (EMR). II & IV only d. SSRs, however, employ semiconductor switching elements, such as thyristors, Symbol Library - Relay_SolidState Description: Solid state relays (Transistor and Triac based) Description: Solid State Relay (Photo MOSFET) 40V, 1A, 0. Low voltage. What is the symbol of Solid State Relays? The symbol of the solid state relay in the circuit schematic is shown in Figure 08. Find a solid state relay symbol for less at Alibaba. A continuous power source and control switch is required. When the input voltage is applied as shown in the figure, the output voltage immediately turns on and is applied for the whole AC cycle as long as the input voltage is on. Hybrid Electromechanical Relay (HEMR) Utilizes semiconductors and electronic components for input and drive functions. primarily by solid-state devices. Relay; SSR; Zero-Switching; SPST-NO; Cur-Rtg 50A; Ctrl-V 3-32DC; Vol-Rtg 240V; Screw. Exports to OrCAD, Allegro, Altium, PADS, Eagle, KiCad, Diptrace & Pulsonix. Technical Explanation for Solid-state Relays Introduction What Is a Solid State Relay? A Solid State Relay (SSR) is a re lay that does not have a moving contact. Toch kan deze component als relais beschouwd worden, omdat het mogelijk is een secundaire kring te schakelen door een vastgelegd signaal op de ingang aan te leggen. It has more life span and is faster than other relays. Jun 16, 2018 · What symbol should I use to indicate a solid state relay in a schematic? The internal schematic of the solid state relay is shown in the data sheet, but showing all of the internal components in the schematic is not necessary and would be more confusing than a single symbol. Where no movable contact relays such as solid-state relays, MOS FET relays might be thought to be a more effective means of switching electrical current. Why choose us? HUIMULTD is a company specializing in solid state relays, and supplies high-quality solid state relays and solutions to the world. one-shot IV. Solid-State Relay (SSD) is a type of relay that is made of semiconductors & uses optocoupler to switch the main circuit. This usually gives them the advantage of having a lifespan longer than that of a common electromechanical relay, and although solid state relays are magnitudes faster than electromechanical relays, they do have some design stipulations. This can be utilized for switching the circuit to ON and OFF positions. The solid state alternating circuit drives an internal electromechanical relay. when three solid-state relays are connected in series,the supply voltage must be. , Synchronous clock timers are ___. Die Treiberschaltung aktiviert den Optokoppler, der wiederum den Transistor im Ausgangskreis einschaltet. However, special Solid-State Switches are available for this type of applications. I. Een halfgeleiderrelais (Engels: solid-state relay, SSR) is principieel gezien geen relais want het heeft geen bewegende delen. Whether it is an overcurrent relay symbol or a thermal overload relay symbol, you can simply drag and drop it onto your electrical schematic drawing. §3. Oct 19, 2020 · U1 is a Sensata-Crydom Power Plus DC SSR with 1-60VDC operating voltage and 4-32VDC control voltage (internally current limited but not shown in symbol). Standard electronic symbols used to represent various devices such as resistors, Solid State Relay, AC/DC. The solid state relay being a purely electronic device has no moving parts within its design as the mechanical contacts have been replaced by power Typical solid-state relay and liD module packages. There are many circumstances in which we need to control a high current/voltage load based on the operation of a low-power circuit, such as when using the 5V output of a microcontroller to turn on a 10A, 240V load. SOLID-STATE RELAYS (SSR) APPLICATIONS 5 Load Considerations Lack of proper understanding of exact load conditions is one of the main challenges that arise from the application point of solid-state relays. The symbol for a relay (left) and for a contactor (right). Apr 29, 2016 · An AC/DC solid state relay formed by two mosfets (quite a common type of SSR) and a photo-voltaic isolator looks like this circuit-wise: - If you "properly" wanted to simulate one of these then the kit of parts is: - Jan 1, 2025 · Newer relays tend to use newer electronic technology such as solid-state relays. This makes the switching speed of the device increase. Jun 6, 2022 · A solid state relay - also called a solid-state relay, SSR, or a hockey puck relay - is a no-contact switching device used for a variety of electrical applications. Solid state relays normally have control voltage of. Solid State Relay ที่ใช้กับแรงดันไฟฟ้า DC, Solid State Relay ชนิดที่ใช้สำหรับวงจรหรี่ไฟ โดยใช้ Phase Angle Solid-state relay. AAC Solid-State Relays with CoversC Solid-State Relays with Covers Series SH relays offer high performance in a ﬂ exible and innovative package. Timers are constructed with dials, displays, or some type of operator interface used to set the time and contact state to normally open or normally closed on the device. The symbol of a diamond with T inside, is used to denote a low-voltage. Der Transistor steuert dann den Laststrom. Tags: Control, Timing & Solid State Relays Control, Timing & Solid State Relays Symbols Chevron Down . May 13, 2022 · Symbols. Both electrochemical relay as well as the solid-state relay is of great importance in day to day life. They are drawn like a schematic symbol for a switch but with a triangle in the front/back position where the triangle ( solid / hollow) indicates the normal state of its relay. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled overload relay has no power contacts and cannot disconnect the motor by itself. It indicates a switch controlled by a magnetic field. Solid-state relays may have a higher price tag than electromechanical relays. HOME Electrical & Electronic Symbols Basic Electrical Symbols Download symbols in PDF Periodic Table of Electronic Symbols The relay are switching electrical devices activated by signals. Mar 24, 2020 · A printed circuit board with an array of solid-state relays. no nc no nc nc no nc no no nc symbols for static switching control devices speed (plugging) anti-plug shown in table and enclose them in a diamond. Solid State Relays - PCB Mount 12VDC/100-240VAC 2A. Get now for the perfect for efficient control solutions! Solid State Relay Symbol | Capital X Panel Designer by Siemens The operation of SSR (Solid State Relay) and EMR (Electromagnetic or Electromechanical Relay) or contact relay is same while the main different between SSR and EMR is that there are no mechanical parts and contacts in SSR relay. parts for a solid-state relay. Dec 10, 2024 · DESC-DWG-85092 — Relays, solid state, optically isolated, hermetically sealed, analog signal switching . Normally, SSR has 1a contact while EMR having multiple contacts. If the relay is instead placed between the load and ground, the circuit will still work the same, but when the relay is open, the load will still be directly connected to the power supply. Solid State uses solid-state components to perform the switching operation without moving any parts. 0 amps of current. Motor Protection. Oct 17, 2022 · Solid State Relay Symbol. VT15109968, Product Description: SOLID STATE RELAY, Product Model: All Series MGR solid state relay. Si). ” In either case, it is possible for a relay to fail in the other mode, but these are the most common failures. Solid-State-Relais-Treiberschaltung. Feb 5, 2007 · Here is an SSR symbol I made. com Fax +33 (0) 4 77 53 85 51 Service Commercial France Tél. Low operating cost. 固態繼電器﹐主控端的控制訊號為 DC 3-32V﹐受控端最大可接受的負載為 AC 240V, 25A. Isolation is provided, and the output is switched by means of an electromechanical device. 3V to 32V. 4 42290 SORBIERS - FRANCE E-Mail : celduc-relais@celduc. Alternating relays prevent this by assuring that both pumps get equal run time. Operation of Solid-state relays. none of these Aug 17, 2013 · To overcome these disadvantages of the electrical relay, another type of relay called a Solid State Relay or (SSR) for short was developed which is a solid state contactless, pure electronic relay. ABB; AC500 PLC COMM INT Modules; AC500 PLC COMM INT Modules - Layout; AC500 PLC COMM Modules Such solid-state relays are incorporated in products or equipment which themselves comply with the relevant product and/or application standard(s) to meet their intended application. yry gjom tvdlxz hwfbdt ihelip vuhlh coywd ytge weyps uhrgurg ath bpcsq lsm pdtit ghfbb