OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747

FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com

Issue B

9/2010

Page 1 of 31

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

OPIA401 through OPIA409, OPIA414

SMD, SOP and SSOP Packages

Description:

The OPIA series optocouplers are designed for applications that use an analog output (Phototransistor or

Photodarlington) in a surface mount package. A wide selection of configurations are available. With typical

isolation voltage of 2,500 or 3,750 Volts(RMS), these products meet typical power system isolation requirements.

Theory of operation: The LED transmitter is used to illuminate the Photo sensor providing electrical isolation

between two power systems while maintaining the ability to transmit information from one power system to the

other. In many applications, analog signal levels may be required to be transmitted between two power systems

while maintaining isolation between the power systems up to 3,750 Volts(RMS). A variety of LED and photo

sensor configurations are available depending on the system requirements.

The Current Transfer Ratio (CTR) is determined using the output current and input current for analog photo

sensors. CTR ratios can range from as low as 5 to over 9,000 depending on the device.

All SMD products are shipped in a shipping tube with “TR” identified on the end of the part number.

Example:

OPI401ATRE is a 4-Pin SMD shipped in tape and reel (TR)

Features:

•

2,500 or 3,750 Vrms electrical isolation

•

Choice of a Single and Dual LED

•

Phototransistor or Photo Darlington Sensor

•

Low-cost plastic Dual-In-Line (DIP) package

Agency Approvals:

•

UL Certification No: E58730

•

RoHS

Applications:

200

100

*

10

20

=

=

−

−

=

mA

mA

Current

LED

Current

r

Photosenso

CTR