Part No.
CTR % Min.
Part No.
CTR % Min.
Min.
typ.
.031 (0.80) min.
.100 (2.54) typ.
typ.
typ.
鈥?/div>
V
VDE #0884 Approval Available with Option 1
D E
DESCRIPTION
This data sheet presents 鏗乿e families of Vishay Industry Standard
Single Channel Phototransistor Couplers. These families include the
4N25/26/27/28 types, the 4N35/36/37/38 couplers, the H11A1/A2/
A3/A4/A5, the MCT2/2E, and MCT270/271/272/273/274/275/276/
277 devices.Each optocoupler consists of Gallium Arsenide infra-
red LED and a silicon NPN phototransistor.
These couplers are Underwriters Laboratories (UL) listed to comply
with a 5300 V
RMS
Isolation Test Voltage. This isolation performance
is accomplished through Vishay double molding isolation manufac-
turing process. Compliance to VDE 0884 partial discharge isolation
speci鏗乧ation is available for these families by ordering option 1.
Phototransistor gain stability, in the presence of high isolation volt-
ages, is insured by incorporating a TRansparent lOn Shield
(TRIOS)
廬
on the phototransistor substrate. These isolation pro-
cesses and the Vishay IS09001 Quality program results in the high-
est isolation performance available for a commercial plastic
phototransistor optocoupler.
The devices are available in lead formed con鏗乬uration suitable for
surface mounting and are available either on tape and reel, or in
standard tube shipping containers.
APPLICATIONS
鈥?AC Mains Detection
鈥?Reed Relay Driving
鈥?Switch Mode Power Supply Feedback
鈥?Telephone Ring Detection
鈥?Logic Ground Isolation
鈥?Logic Coupling with High Frequency Noise
Rejection
Notes:
Designing with data sheet is covered in Application Note 45.
Document Number: 83717
Revision 17-August-01
www.vishay.com
2鈥?3