LH1544AAC/ AACTR/ AB
Vishay Semiconductors
Dual 1 Form A Solid State Relay (Low Capacitance)
DIP
SMD
Features
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Dual Channel, LH1541 Type
Low Capacitance Switch (5.0 pF)
Isolation Test Voltage 5300 V
RMS
Extremely High OFF-resistance
Load Voltage 200 V
Clean Bounce Free Switching
Low Power Consumption
High Reliability Monolithic detector
Lead-free component
Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
S1
8
S1
S1'
S1' S2
7 6
S2'
5
S2
i179034
S2'
1
2
3
4
e3
Description
Pb
Pb-free
Agency Approvals
• UL1577, File No. E52744 System Code H or J,
Double Protection
• CSA - Certification 093751
• BSI/BABT Cert. No. 7980
• DIN EN 60747-5-2 (VDE0884)
DIN EN 60747-5-5 pending
• FIMKO Approval
Applications
Instrumentation
- Thermocouple Switching
- Analog Multiplexing
Reed Relay Replacement
Programmable Logic Controllers
Data Acquisition
Test Equipment
These dual SSRs (LH1544, Dual 1 Form A) are SPST
normally open switches which can replace electrome-
chanical relays in many applications. The relays pro-
vide a low-capacitance, high-voltage switch contact
with high off-resistance and low switch-offset voltage.
These characteristics, combined with high-speed
actuation, result in an SSR which is ideal for small sig-
nal and dc instrumentation applications.
The relays are constructed by using a GaAlAs LED for
actuation control and an integrated monolithic die for
the switch output. The die is comprised of a photo-
diode array, switch-control circuity, and low-capaci-
tance MOSFET switches.
Order Information
Part
LH1544AAC
LH1544AACTR
LH1544AB
Remarks
Tubes, SMD-8
Tape and Reel, SMD-8
Tubes, DIP-8
Document Number 83835
Rev. 1.3, 26-Oct-04
www.vishay.com
1
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