5–208

Emitter

Reverse Voltage .................................................................. 5.0 V

Continuous Forward Current .............................................50 mA

Peak Forward Current (1

µs) ..................................................1 A

Power Dissipation ........................................................... 100 mW

Derate Linearly from 25

°C ..........................................1.3 mW/°C

Detector

Output Breakdown Voltage................................................. 350 V

Continous Load Current ..................................................100 mA

Total Power Dissipation .................................................. 300 mW

Derate Linearly from 25

°C .......................................See Figure 4

Package

Power Dissipation ........................................................... 400 mW

Derate Linearly from 25

°C ..........................................2.5 mW/°C

Isolation Resistance

12

Ω

11

Ω

Storage Temperature Range ................................ –40 to +150

°C

Operating Temperature Range............................... –40 to +85

°C

Junction Temperature ........................................................ 100

°C

Soldering Temperature, 2 mm from case, 10 sec. ............ 260

°C

Package Dimensions in Inches (mm)

A

K

NC

S

NC

S'

.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.

1

2

3

6

5

4

FEATURES

• Normally Open, Single Pole Single Throw Operation

• Control 350 VAC or DC Voltage

• Switch 100 mA Loads

• LED Control Current, 2.5 mA

• Low ON-Resistance, 37

Ω Typ. at 100 mA

• Current Limit Protection

• Underwriters Lab File # E52744

APPLICATIONS

• Telephone Switch Hook

• High Voltage Test Equipment

• TRIAC Driver

• Motor Control

• Industrial Control Systems

DESCRIPTION

The LH1550 is a single pole single throw (SPST), normally

open (NO), solid state relay. The relay can control AC or

DC loads currents up to 100 mA, with a supply voltage up

to 350 V. The device is packaged in a six pin 0.3 inch dual-

in line package. This package offers an insulation dielec-

The coupler consists of a AlGaAs LED that is optically cou-

pled to a dielectrically isolated photodiode array which

drives two series connected high voltage MOS transistors.

The typical ON-Resistance is 37

Ω at 25 mA and is linear

up to 50 mA. There is built-in current limiting circuitry in the

detector chip, enabling it to pass FCC 68-302 and other

regulatory voltage surge requirements when over voltage

protection is provided.

LH1550

HIGH VOLTAGE, SOLID STATE RELAY

OPTOCOUPLER