LCA125L
Single-Pole, Normally Open
OptoMOS® Relay
INTEGRATED
CIRCUITS
DIVISION
Parameter
Blocking Voltage
Load Current
Ratings
300
Units
Description
VP
mArms / mADC
LCA125L is a current-limiting, 300V, 170mA, 20,
normally open (1-Form-A) solid state relay that uses
optically coupled MOSFET technology to provide
3750Vrms of input to output isolation.
170
On-Resistance (max)
20
Its optically coupled outputs, which use the patented
OptoMOS architecture, are controlled by a highly
efficient GaAIAs infrared LED.
Features
• Current Limiting
• 3750Vrms Input/Output Isolation
• Low Drive Power Requirements (TTL/CMOS
Compatible)
• High Reliability
• Arc-Free With No Snubbing Circuits
• FCC Compatible
• VDE Compatible
The LCA125L can be used to replace mechanical
relays and offers the superior reliability associated with
semiconductor devices. Because it has no moving
parts, it offers faster, bounce-free switching in a
compact surface mount or thru-hole package.
• No EMI/RFI Generation
• Small 6-Pin Package
Approvals
• UL Recognized Component: File E76270
• CSA Certified Component: Certificate 1175739
• EN/IEC 60950-1Certified Component:
TUV Certificate: B 09 07 49410 004
• Machine Insertable, Wave Solderable
• Surface Mount Tape & Reel Version Available
Applications
• Telecommunications
• Telecom Switching
• Tip/Ring Circuits
• Modem Switching (Laptop, Notebook,
Pocket Size)
Ordering Information
Part #
LCA125L
Description
6-Pin DIP (50/Tube)
LCA125LS
LCA125LSTR
6-Pin Surface Mount (50/Tube)
6-Pin Surface Mount (1,000/Reel)
• Hook Switch
• Dial Pulsing
• Ground Start
Pin Configuration
AC/DC Configuration
• Ringing Injection
• Instrumentation
• Multiplexers
• Data Acquisition
1
2
3
6
5
4
+ Control
– Control
Load
Do Not Use
Load
Do Not Use
• Electronic Switching
• I/O Subsystems
• Meters (Watt-Hour, Water, Gas)
• Medical Equipment—Patient/Equipment Isolation
• Security
DC Only Configuration
1
2
3
6
5
4
+ Control
– Control
+ Load
– Load
Do Not Use
• Aerospace
• Industrial Controls
Switching Characteristics of
Normally Open Devices
Form-A
IF
90%
10%
ILOAD
t
t
off
on
Pb
e3
DS-LCA125L-R06
1
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