DESCRIPTION
The VOS618A series has a GaAs infrared emitting diode
emitter, which is optically coupled to a silicon planar
phototransistor detector, and is incorporated in a 4-pin
50 mil lead pitch mini-flat package.
It features a high current transfer ratio at low input current,
low coupling capacitance, and high isolation voltage.
The coupling devices are designed for signal transmission
between two electrically separated circuits.

FEATURES
• High CTR with low input current
• Low profile package (half pitch)
• High collector emitter voltage, VCEO = 80 V
• Isolation test voltage = 3750 VRMS
• Low coupling capacitance
• High common mode transient immunity
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912

APPLICATIONS
• Telecom
• Industrial controls
• Battery powered equipment
• Office machines
• Programmable controllers

AGENCY APPROVALS
Safety application model number covering all products in
this datasheet is VOS618A. This model number should be
used when consulting safety agency documents.
• UL1577, file no. E52744
• cUL
• DIN EN 60747-5-5 (VDE 0884-5), available with option 1
• FIMKO EN 60065, EN 60950-1
• CQC GB4943.1-2011 and GB8898-2011 (suitable for
installation altitude below 2000 m)