1
DESCRIPTION
The IS281GB 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 capacita nce typically 0.3pF
• CTR selections available
• Wide temperature range
• Lead free
• Halogen Free
APPLICATIONS
• Power Supply Feedback V oltage/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 indentification
IS281GB ( Compact Range )
ISOCOM
COMPONENTS
ISOCOM COMPONENTS 2004 LTD
Unit 25B, Park View Road West, Park View Industrial Estate
Hartlepool, Cleveland, TS25 1UD, United Kingdom
Tel: +44 (0)1429 863 609 Fax : +44 (0)1429 863 581
e-mail: sales@isocom.co.uk
http://www.isocom.com
ISOCOM COMPONENTS ASIA LTD
Hong Kong Office, 1712-1713
Laurels Industrial Centre, 32 Tai Yau Street,
San Po Kong, Kowloon, Hong Kong.
Tel: +852 2995 9217 Fax : +852 8161 6292
e-mail sales@isocom.com.hk
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
DC93142E 12/08/2009
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ELECTRICAL CHARACTERISTICS
Ambient Temperature = 25°C unless otherwise specifi ed
INPUT
OUTPUT
COUPLED
Note 1 Measured with input leads shorted together an d output leads shorted together
IS281GB ( Compact Range )
ISOCOM
COMPONENTS
DC93142E 12/08/2009
Parameter Symbol Test Condition Min Max Unit
Forward Voltage VF IF = 20mA 1.40 V
Reverse Leakage IR V
R = 4V 10 µA
Input Capacitance Cin V = 0V, f = 1 KHz 250 pF
Typ.
1.20
30
Parameter Symbol Test Condition Min Max Unit
Collector—Emitter
breakdown Voltage
BVCEO IC = 100µA 80 V
Emitter—Collector
breakdown Voltage
BVECO I
E = 100µA 7 V
Collector dark Current ICEO V
CE = 20V, IF = 0mA 100 nA
Typ.
Parameter Symbol Test Condition Min Max Unit
Current transfer ratio CTR IF = 10mA, VCE = 5V 100 600 %
Collector—Emitter
saturation Voltage
VCEsat I
F = 10mA, IC = 1mA 0.2 V
Input to output isola-
tion Voltage
VISO See note 1 3750 VRMS
Typ.
0.1
Output rise time tr V
ce =2V,Ic = 2mA, Rl = 100Ώ 5.0 18 µS
Output fall time tf V
ce =2V,Ic = 2mA, Rl = 100Ώ 3.0 18 µS
Cut off frequency fc I
F = 10mA, VCE = 5V,
RL = 100Ώ
100 kHz
Coupling Capacitance Ck f = 1 MHz 0.3 pF
3
IS281GB ( Compact Range )
ISOCOM
COMPONENTS
DC93142E 12/08/2009
4
IS281GB ( Compact Range )
ISOCOM
COMPONENTS
DC93142E 12/08/2009
