OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747

FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com

Issue A .2

04/08

Page 3 of 3

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Optically Coupled Isolator

OPI120, OPI123

Electrical Characteristics

SYMBOL

PARAMETER

MIN

TYP

MAX

UNITS

TEST CONDITIONS

Input Diode

Forward Voltage

OPI120

OPI123

-

-

-

-

1.5

1.5

V

Reverse Current

-

-

100

µA

Output Photosensor (See OP236 for additional information - for reference only)

Collector-Emitter Breakdown Voltage

OPI120

OPI123

25

20

-

-

-

-

V

Emitter-Collector Breakdown Voltage

5

-

-

V

Collector-Emitter Dark Current

-

-

100

nA

Coupled (See OP804 and OP805 for additional information - for reference only)

DC Current Transfer Ratio

OPI120

OPI123

20

50

70

-

-

-

%

Collector Saturation Voltage

OPI120

OPI123

-

-

-

-

0.5

1.2

V

Isolation Voltage

(1)

15

-

-

kV

See note 1

Output Rise Time, Output Fall Time

OPI120

OPI123

-

-

2

40

-

-

µs

See Test Circuit

Collector-Base Breakdown Voltage

OPI120

25

-

-

V

On Collector Current

OPI120

OP123

2.0

5.0

-

-

50

-

mA

On Collector Base Current—OPI120

15

-

-

µA

Notes:

(1)

Measured with input and output leads shorted in air with a maximum relative humidity of 50%.

If suitably encapsulated or oil-immersed, the isolation voltage is increased to 25 kV minimum.

Vcc

Vout

Vcc

R = 200 Ohms

R = 50 Ohms

I = 10 mA

FF

I = 10 mA

R = 50 Ohms

R = 200 Ohms

Vcc

Vout

Vcc

OPI120

Test Circuit

OPI123