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www.vishay.com
VO4154, VO4156
Vishay Semiconductors
Optocoupler, Phototriac Output, Zero Crossing, High dV/dt, Low Input Current
A1
6 MT2
C2
5 NC
NC 3 ZCC*
4 MT1
*Zero crossing circuit
23165
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DESCRIPTION
The VO4154 and VO4156 consists of a GaAs IRLED optically coupled to a photosensitive zero crossing TRIAC packaged in a DIP-6 package.
High input sensitivity is achieved by using an emitter follower phototransistor and a cascaded SCR predriver resulting in an LED trigger current of 1.6 mA for bin D, 2 mA for bin H, and 3 mA for bin M.
The phototriac zero crossing family uses a proprietary dV/dt clamp resulting in a static dV/dt of greater than 5 kV/μs.