General description
The VOS617A 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 profle package (half pitch)
●High collector emitter voltage, VcEo= 80 V
●lsolation test voltage = 3750 VAMS
●Low coupling capacitance
●High common mode transient immunity
●Material categorization:

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

AGENCY APPROVALS
Safety application model number covering all products in
this datasheet is VOS617A. 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)

The VOS617A-4T is an optoisolator transistor, also known as an optocoupler or photocoupler.

Optoisolators are electronic devices that combine an optical transmitter (LED) and a photodetector

(transistor) to provide electrical isolation between two circuits while allowing the transfer of signals

or data through light.

Here are some general specifications for the VOS617A-4T optoisolator transistor:

• Isolation Voltage: This refers to the maximum voltage that can be applied between the input and
• output sides of the optoisolator while maintaining electrical isolation. The specific value would depend
• on the datasheet of the component.
• Input Type: The input side of the optoisolator typically consists of an LED (Light Emitting Diode) that
• emits light when forward biased.
• Output Type: The output side of the optoisolator generally includes a phototransistor or photodarlington
• that responds to the light received from the input side, allowing current to flow through it.
• Package Type: The optoisolator may come in various package types such as through-hole (e.g., DIP)
• or surface mount (e.g., SMD) packages.