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www.vishay.com
VO4254, VO4256
Vishay Semiconductors
Optocoupler, Phototriac Output, High dV/dt, Low Input Current
21842-1
A1 C2 NC 3
i179035_3
6 MT2 5 NC 4 MT1
DVE
DESCRIPTION
The VO4254 and VO4256 phototriac consists of a GaAs IRLED optically coupled to a photosensitive non-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 new non zero phototriac family use a proprietary dV/dt clamp resulting in a static dV/dt of greater than 5 kV/μs.