Vishay VOS618A-X001T Wide-Range CTR Optocoupler with Safety-Rated Insulation

• Extremely Flexible CTR Range (50–600 %): Allows designers to optimize LED drive and circuit coupling across a wide range of applications.
• Certified Option 1 Insulation: The “X001” version ensures compliance with safety insulation standards, making the part suited for critical medical/industrial isolation.
• Compact and SMT-ready Form Factor: The SSOP-4 package and tape-and-reel (T suffix) format streamline automated assembly in compact systems.

The Vishay VOS618A-X001T is a variant of the VOS618A series which incorporates the safety option “X001” (option 1 insulation) and is supplied in tape-and-reel (“T”). The base series offers a wide CTR range (50 %–600 %) and this part inherits that flexibility, in the standard SSOP-4 half-pitch package. 
It features the same optocoupler structure: GaAs IR emitting diode and silicon planar phototransistor detector, designed for galvanic isolation between two circuits.

Features

• Very broad CTR range (50 %–600 %) supporting diverse drive conditions.

• Safety-rated insulation per option 1 (X001) – suitable for “safe electrical insulation” circuits.

• Compact low-profile SSOP-4 package.

• 80 V VCEO rating.

• Isolation test voltage 3750 VRMS.

• Low coupling capacitance, high common-mode immunity.

Specifications

• CTR: min 50 %, max 600 % (IF = 1 mA, VCE = 5 V).

• Other device specs as per the series (see earlier pages).

Applications

• Designs where drive current requirements are variable and wide CTR flexibility is desired.

• Safety-critical applications requiring electrical insulation certification.

• Telecom interfaces, industrial controls, portable power systems.

• Office/automation equipment in regulated environments where isolation and compliance matter.