OPIA401 through OPIA409, OPIA414
SMD, SOP and SSOP Packages
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
VDE No: 40026577(OPIA401-404), 40026553(OPIA405-409)
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.
Photosensor − Current 20mA
CTR =
=
*100 = 200
LED − Current
10mA
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)
Applications:
• High voltage isolation: 2,500 or 3,750 Volts(RMS)
• PCBoard power system isolation
• Industrial equipment power isolation
• Medical equipment power isolation
• Office equipment
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
RoHS
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Issue B
9/2010
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
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