ASSR-301C and ASSR-302C
Low C x R, Form A, Solid State Relay (Photo MOSFET)
(250V/50/15pF)
Data Sheet
Description
The ASSR-30xC Series is speci cally designed for fast
switching applications, commonly found in the test and
measurement systems. The low C x R and low output o -
state leakage current provide higher system throughput
and reduce system errors.
The dual channel con guration of ASSR-302C is equiva-
lent to 2 Form A Electromechanical Relays (EMR). One
channel of the relay consists of an AlGaAs infrared light-
emitting diode (LED) input stage optically coupled to
a high-voltage output detector circuit. The detector
consists of a high-speed photovoltaic diode array and
driver circuitry to switch on/o two discrete high volt-
age MOSFETs. The relay turns on (contact closes) with a
minimum input current of 1mA through the input LED.
The relay turns o (contact opens) with an input voltage
of 0.8V or less.
ASSR-301C is available in 4-pin SO package and ASSR-
302C is available in 8-pin DIP and Gull Wing Surface
Mount packages. Their electrical and switching char-
acteristics are speci ed over the temperature range of
-40°C to +85°C.
Functional Diagram
Features
Compact Solid-State Bi-directional Signal Switch
Single and Dual Channel Normally-o Single-Pole-
Single-Throw (SPST) Relay
250V Output Withstand Voltage
0.05A Current Rating
Low Input Current: I
F
= 1mA
Low C x R: 340pF typical
Low Output O -state Leakage Current: 0.3nA typical
Fast Speed Switching: 0.07ms (Ton), 0.07ms (To )
typical
High Transient Immunity: >1kV/s
High Input-to-Output Insulation Voltage
(Safety and Regulatory Approvals Pending)
- 3750 Vrms for 1 min per UL1577
- CSA Component Acceptance
Applications
Automatic Test Equipment
Data Acquisition System
Datalogger and Recorder
Multiplexer
Measuring Instrument
EMR / Reed Relay Replacement
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Truth Table
Opto-isolation
Turn-off
Circuit
1
2
4
3
Single Channel, SPST Relay,
1 Form A in 4-Pin SO Package
CloseOn
OpenOff
OutputLED
