Fort Worth, Texas – January 10, 2022 – TTI, Inc., a leading specialty distributor of electronic components, is now stocking the IL4108 family of Phototriac Output Optocouplers from Vishay. These high-voltage isolator devices are targeted for applications such as industrial controls, solid state relays and power supplies.
Vishay’s IL4108 consists of a GaAs IRLED optically coupled to a photo coupled, zero-crossing TRIAC network with two inverse parallel connected monolithic SCRs. High-input sensitivity is achieved by using an emitter follower phototransistor and a cascaded SCR pre-driver resulting in an LED trigger current of less than 2 mA (DC). The clamp circuit has a MOSFET that is enhanced when high dV/dt spikes occur between MT1 and MT2 of the TRIAC. When conducting, the FET clamps the base of the phototransistor, disabling the first stage SCR pre-driver. The zero-cross-line, voltage detection circuit consists of two enhancement MOSFETS and a photodiode. The IL4108 isolates low-voltage logic from 120 VAC, 240 VAC and 380 VAC lines to control resistive, inductive or capacitive loads including motors, solenoids, high current thyristors or TRIAC and relays.
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About TTI
TTI, Inc., a Berkshire Hathaway company, is an authorized, specialty distributor of electronic components. Founded in 1971, the emphasis on a broad and deep product portfolio, available-to-sell inventory and sophisticated supply chain programs has established TTI as a distributor of choice to manufacturers in the industrial, defense, aerospace, transportation, medical and communications sectors worldwide. TTI and its wholly owned subsidiaries, the TTI Family of Specialists, Mouser Electronics, Sager Electronics and the Exponential Technology Group employ over 7,300 people in more than 136 locations throughout North America, South America, Europe, Asia and Africa. Globally, the company maintains over 3 million square feet of dedicated warehouse space in 30 distribution centers, housing over 850,000 component part numbers. For more information about TTI, visit www.tti.com
About Vishay Semiconductor
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader.