www.vishay.com

4

Document Number 83620

Rev. 1.4, 22-Apr-04

VISHAY

IL256AT

Vishay Semiconductors

Fig. 7 Photocurrent vs. LED Current

Fig. 9 Normalized HFE vs. Base Current and Temp.

iil256at_07

.1

1

10

100

1000

100

10

1

.1

25°C

70°C

IF - LED Current - mA

iil256at_08

1

10

100

1000

700

600

500

400

300

200

100

100

10

1

.1

IB - Base Current - µA

VCE = 0.4 V

iil256at_09

1

1 0

100

1000

1.2

1.0

0.8

0.6

0.4

NHFE -20°C

NHFE 25°C

NHFE 50°C

NHFE 70°C

IB - Base Current - µA

No rm aliz ed to:

IB =10 µA

VCE =10

Fig. 10 Normalized Saturated HFE vs. Base Current

Fig. 11 Base Emitter Voltage vs. Base Current

Fig. 12 Collector-Emitter Leakage Current vs.Temp.

iil256at_10

1

10

100

1000

1.5

1.0

0.5

0.0

TA = -20°C

TA = 25°C

TA = 50°C

TA = 70°C

IB - Base Current - µA

Normalized to:

HFE at VCE =10V

ICB =10 µA

VCE(sat) = 0.4 V

iil256at_11

0.4

0.5

0.6

0.7

0.8

1000

100

10

1

.1

.01

.001

VBE - Base Emitter Voltage - V

iil256at_12

-20

0

20

40

60

80

100

10 5

10 4

10 3

10 2

10 1

10 0

10 -1

10 -2

TA - Ambient Temperature - °C

Typical

VCE =10V