DESCRIPTION
The VO4158 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 new phototriac zero crossing family uses a proprietary
dV/dt clamp resulting in a static dV/dt of greater than
5 kV/μs.
The VO4158 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.

FEATURES
• High static dV/dt 5 kV/μs
• High input sensitivity IFT = 1.6 mA, 2 mA, and
3 mA
• 300 mA on-state current
• Zero voltage crossing detector
• 800 V blocking voltage
• Isolation rated voltage 4420 VRMS
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912

APPLICATIONS
• Solid-state relays
• Industrial controls
• Office equipment
• Consumer appliances

AGENCY APPROVALS
• UL
• cUL
• DIN EN 60747-5-5 (VDE 0884-5), available with option 1
• FIMKO