© 2016 Solid State Optronics • San José, CA

SMA4240 /TR

Rev 01 (02/24/2016)

003101

Page 1 of 7

SMA4240

1 Form A

60V / 1.5A

MOSFET Output Solid State Relay

Description

The SMA4240 is a bi-directional, single-pole, single-throw,

normally open multipurpose solid-state relay in a miniature

4-pin small outline package. It is designed to replace

electromechanical relays in general purpose switching

applications. The relay consists of an integrated circuit that

drives two rugged source-to-source depletion type DMOS

transistors - optically coupled to a light emitting diode. The

MOSFET output has typical resistances on the order of

150mΩ, allowing the device to support a continuous load

current of up to 1A.

The SMA4240 comes standard in a 4 pin SOP package.

Schematic Diagram

Agency Approvals

UL/C-UL:

File # E201932

VDE:

File # 40035191 (EN 60747-5-2)

Applications



Medical Equipment



Security Systems



Meter Reading Equipment



Data Acquisition



Battery Monitoring



Multiplexers

Absolute Maximum Ratings

The values indicated are absolute stress ratings. Functional

operation of the device is not implied at these or any

conditions in excess of those defined in electrical

characteristics section of this document. Exposure to

absolute Maximum Ratings may cause permanent damage

to the device and may adversely affect reliability.

Storage Temperature …………………………..-55 to +125°C

Operating Temperature …………………………-40 to +85°C

Continuous Input Current………………………………..50mA

Transient Input Current ………………….……………..500mA

Reverse Input Control Voltage …………..…………………5V

Input Power Dissipation…………………………………40mW

Total Power Dissipation ……………………………..400mW

Solder Temperature – Wave (10sec)……………….….260°C

Solder Temperature – IR Reflow (10sec)….…………..260°C

Ordering Information

Part Number

Description

SMA4240

4 pin SOP, (100/Tube)

SMA4240-TR

4 pin SOP, Tape and Reel (2000/Reel)

Features



1A Maximum Continuous Load Current



Low On Resistance (150m

 Typical)



Low Input Control Current (5mA MAX)



High Input-to-Output Isolation (1.5kV MIN)



Ultra Miniature 4SOP Package



Long Life / High Reliability



RoHS / Pb-Free / REACH Compliant

NOTE: Suffixes listed above are not included in marking on

device for part number identification

1

2

3

4

(+) Input

(-) Input

(-/+) Load

(+/-) Load

SMA4240