FAIRCHILD FODM8801A, FODM8801B, FODM8801C OptoHiT™ Series High Temperature Phototransistor Optocoupler in Half Pitch Mini-Flat 4-Pin Package Data Manual (1)
Summary
This high-performance optocoupler designed for demanding industrial and power electronics applications delivers reliable signal isolation up to 125°C. This manual provides comprehensive technical specifications, including detailed performance graphs, safety standards compliance (UL/IEC), thermal profiles, and recommended operating conditions. It is essential documentation for engineers designing DC-DC converters, motor controls, communicators, and industrial power supplies requiring high current transfer ratio and robust isolation voltage in a compact half-pitch package.
Page 1 Text Content
8801X to i T eries, H ig Tem eratu re P to tran sisto r O to co ler in alf P itch in i-F lat 4-P in ackag
August 2011
FODM8801A, FODM8801B, FODM8801C Opto Hi T™ Series, High Temperature Phototransistor Optocoupler in Half Pitch Mini-Flat 4-Pin Package Features Description Utilizing patented process technology to achieve high The Opto Hi T™ Series, FODM8801, is a first of its kind operating temperature up to 125°C phototransistor, utilizing Fairchild’s leading edge
Guaranteed Current Transfer Ratio (CTR) patented process technology to achieving high operating specifications across full temperature range temperature characteristics, up to 125°C. The opto- coupler consists of an aluminum gallium arsenide
– Excellent CTR linearity at high temperature
(Al Ga As) infrared light emitting diode optically coupled to
– CTR at very low input current, I
a phototransistor, in a compact half pitch, mini-flat, 4-pin
High isolation voltage regulated by safety agency,
package. It delivers high current transfer ratio at very low
UL1577, 3750 VAC for 1 min. and
RMS input current. The input-output isolation voltage, Viso, is
DIN EN/IEC60747-5-2 (pending approval)
rated at 3750 VAC
Compact half pitch, mini-flat, 4-pin package (1.27mm lead pitch, 2.4mm maximum standoff height) > 5mm creepage and clearance distance Applicable to Infrared Ray reflow, 245°C
Applications Primarily suited for DC-DC converters For ground loop isolation, signal to noise isolation Communications – adapters, chargers Consumer – appliances, set top boxes Industrial – power supplies, motor control, programmable logic control
Schematic Package Drawing
COLLECTORANODE
CATHODE EMITTER
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FODM8801X Rev. 1.0.8
Page Summary Contents For FAIRCHILD FODM8801A, FODM8801B, FODM8801C OptoHiT™ Series High Temperature Phototransistor Optocoupler in Half Pitch Mini-Flat 4-Pin Package Data Manual (1)
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 14 |
| File Size | 719.82 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
What is the maximum operational temperature for this optocoupler?
The recommended operating temperature range is -40 to +125°C.
What is the rated input-to-output isolation voltage?
The Input-Output Isolation Voltage is specified at 3,750 Vac when tested at 60Hz for one minute.
What kind of applications is this optocoupler best suited for?
It is primarily suited for DC-DC converters and ground loop or signal to noise isolation in communications.
What temperature should be used during the soldering process?
The recommended lead solder temperature duration is 260°C for 10 seconds.