英国*ISOCOM*原装进口光耦：IS281-4可直接PIN TO PIN兼容TLP291-4，可提供技术支持，库存现货支持

APPROVALS 
UL 1577 Pending 
DESCRIPTION 
The IS281 is an optically coupled isolator consisting of 
an infrared light emitting diode and an NPN silicon 
photo transistor. It belongs to Isocom’s Compact 
range of opto-couplers 
FEATURES 
? Low profile package ( half pitch ) 
? AC Isolation test voltage 3750VRMS
? Low coupling capacitance typically 0.3pF 
? CTR selections available 
? Wide temperature range 
? Lead free 
? Halogen Free 
APPLICATIONS 
? Power Supply Feedback Voltage/Current 
? Industrial system controllers 
? Measuring instruments 
? Signal transmission between systems of 
different potentials and impedance 
ORDER INFORMATION 
? Available in Tape and Reel with 1000 & 5000 
pieces per reel 
MARKING INFORMATION 
Please note that the device will be marked with the 
generic part number “THP*” the date code will also be 
marked on the device. 
* Denotes internal binning identification 
ABSOLUTE MAXIMUM RATINGS 
Input Diode 
Forward Current 60mA 
Reverse Voltage 6V 
Power dissipation 70mW 
Derating Factor > 90°C 2mW / °C 
Output Transistor 
Collector to Emitter Voltage 80V 
Emitter to Collector Voltage 7V 
Collector Current 50mA 
Power Dissipation 150mW 
Derating Factor > 70°C 3.1mW / °C 
Total Package 
Isolation test Voltage 3750VRMS 
Operating Temperature -55 to 110 C 
Storage Temperature -55 to 150 C