5–1

IL55B

PHOTODARLINGTON

OPTOCOUPLER

Parameter

Min.

Typ.

Max.

Unit

Condition

Emitter

Forward Voltage*

1.25

1.5

V

Reverse Current*

0.1

10

µAV

Capacitance

25

pF

Detector

80

V

510

V

1

µAV

Package

Current Transfer

Ratio

500

%

Coupling

Capacitance

1.5

pF

Turn-On Time

5

µsV

Turn -Off Time

100

µsI

Package Dimensions in Inches (mm)

1

2

3

6

5

4

Base

Collector

Emitter

Anode

Cathode

NC

.010 (.25)

.014 (.35)

.110 (2.79)

.150 (3.81)

.130 (3.30)

.150 (3.81)

.020 (.051) min.

.300 (7.62)

typ.

.031 (0.80)

.035 (0.90)

.100 (2.54) typ.

.039

(1.00)

min.

.018 (0.45)

.022 (0.55)

.248 (6.30)

.256 (6.50)

.335 (8.50)

.343 (8.70)

Pin One ID.

6

5

4

1

2

3

18

° typ.

.300 (7.62)

.347 (8.82)

4

°

typ.

FEATURES

• High Collector-Emitter Breakdown Voltage—

80 V minimum

• High Isolation Resistance, 1011 W Typical

• Standard Plastic DIP Package

• Underwriters Lab File #E52744

•

VDE 0884 Available with Option 1

DESCRIPTION

The IL55B is an optically coupled isolator with a Gal-

lium Arsenide infrared LED and a silicon photodarling-

ton sensor. Switching can be achieved while

maintaining a high degree of isolation between driving

and load circuits. These optocouplers can be used to

replace reed and mercury relays with advantages of

long life, high speed switching and elimination of

magnetic fields.

Maximum Ratings

Emitter

Peak Reverse Voltage ............................................. 3 V

Continuous Forward Current .............................. 60 mA

Power Dissipation at 25

°C............................... 100 mW

Derate Linearly from 55

°C......................... 1.33 mW/°C

Detector

Collector (load) Current.................................... 125 mA

Power Dissipation at 25

°C Ambient ................ 150 mW

Derate Linearly from 25

°C........................... 2.0 mW/°C

Package

Total Dissipation at 25

°C Ambient .................. 250 mW

Derate Linearly from 25

°C........................... 3.3 mW/°C

Isolation Test Voltage (between

emitter and detector refered to

standard climate 23

°C/50%RH,

Creepage ................................................... 7 mm min.

Clearance.................................................... 7 mm min.

Tracking Resitance, Group III

(KC>600 per VDE 110 § 6,Table 3

and DIN 53480/VDE 0330, Part 1

Isolation Resistance

12

Ω

11

Ω

Storage Temperature ........................ –55

°C to +150°C

Operating Temperature .................... –55

°C to +100°C

Lead Soldering Time at 260

°C ......................... 10 sec.

V

DE