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Optoisolators (Photocouplers)

CNZ3731, CNC7C501, CNZ3734

CNC2S501, CNC7C502, CNC7H501

Optoisolators

Overview

The CNZ3731 series of optoisolators consist of a GaAs infrared

LED which is optically coupled with a Si NPN Darlington

phototransistor, and housed in a small DIL package. The series

provides high I/O isolation voltage and high collector/emitter isolation

voltage, as well as a high current transfer ratio (CTR). This opto

isolator series also includes the two-channel CNC7C501 and the four-

channel CNZ3734, and A type of these models with increased

Features

High current transfer ratio with Darlington phototransistor output :

CTR = 4000% (typ.)

Small DIL package for saving mounting space

UL listed (UL File No. E79920)

A-type models have a guaranteed internal insulating distance of 0.4 mm

Applications

Telephones

Telephone exchange

FAX

Programmable controllers

Signal transfer between circuits with different potentials and impedances

Unit : mm

CNZ3731/CNC2S501

CNC7C501/CNC7C502

CNZ3734/CNC7H501

Unit : mm

Unit : mm

1,3,5,7:

2,4,6,8:

9,11,13,15:

10,12,14,16:

1: Anode

2: Cathode

3: Emitter

4: Collector

1,3: Anodee

2,4: Cathode

5,7: Emitter

6,8: Collector

Anode

Cathode

Emitter

Collector

0 to

15˚

0 to

15˚

0 to

15˚

0 to

15˚

1

23

4

1

2

3

4

7

8

5

6

7.62

±0.3

2.54 min.

0.5 min.

6.2

±0.5

7.62

±0.3

6.2

±0.5

1

2

3

4

5

6

7

8

13

14

15

16

9

10

11

12

0 to

15˚

0 to

15˚

7.62

±0.3

6.2

±0.5

5.2 max.

2.54 min.

0.5 min.

5.2 max.

2.54 min.

0.5 min.

5.2 max.

LED Mark

LED Mark

LED Mark

Pin Connection

Top View

CNZ3731

CNC2S501

Top View

CNC7C501

CNC7C502

1

2

4

3

1

2

8

7

3

4

6

5

1

2

16

15

3

4

14

13

5

6

12

11

7

8

10

9

CNZ3734

CNC7H501

Top View