LCA125LS Equivalent & Substitute Parts

Part Overview

The LCA125LS is an active solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, designed for SPST-NO (1 Form A) switching applications. This OptoMOS® series component operates across AC and DC loads with a maximum voltage range of 0–350V and supports load currents up to 170 mA. The device is housed in a 6-SMD surface-mount package with gull-wing termination and is RoHS3 compliant. Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain considerations, or specific application requirements where alternative electrical characteristics remain within acceptable operating parameters.

Substiute Parts

LCA125LS

IXYS Integrated Circuits DivisionIn Stock: 1061LCA125LS Datasheet

Current PartRFQ

AQV210HLA

Panasonic Electric WorksIn Stock: 1112AQV210HLA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCA125LS is permissible with the AQV210HLA based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Circuit configuration: Both are SPST-NO (1 Form A) relays
• Output type: Both support AC and DC loads
• Load voltage range: Both operate across 0 V ~ 350 V
• Package / Case: Both use 6-SMD (0.300", 7.62mm) with gull-wing termination
• Mounting type: Both are surface-mount devices
• Product status: Both are active components

Allowable Variations:

• Input voltage: LCA125LS requires 1.2 VDC; AQV210HLA requires 1.14 VDC (both within typical control circuit tolerances)
• Load current: LCA125LS supports 170 mA; AQV210HLA supports 130 mA (application-dependent; verify load current does not exceed 130 mA)
• On-state resistance: LCA125LS maximum 20 Ohms; AQV210HLA maximum 25 Ohms (acceptable variance for most applications)

Parameter Comparison

Engineering Selection Recommendations

Both the LCA125LS and AQV210HLA are active products with current manufacturing status and regulatory compliance. The LCA125LS offers higher load current capacity (170 mA) and lower on-state resistance (20 Ohms maximum), making it suitable for applications requiring maximum current handling. The AQV210HLA provides a lower input voltage requirement (1.14 VDC) and is RoHS compliant, with equivalent load voltage range and package compatibility. Selection between these components should be based on specific application load current requirements and input voltage availability. If application load current exceeds 130 mA, the LCA125LS is the appropriate choice. If load current remains at or below 130 mA, either component is electrically suitable.

Frequently Asked Questions (FAQ)

Q: Can the AQV210HLA directly replace the LCA125LS in an existing circuit?

A: Direct replacement is possible if the application load current does not exceed 130 mA. Both components share identical package geometry (6-SMD, 0.300" / 7.62mm), termination style (gull wing), and load voltage range (0–350V AC/DC). PCB footprints are compatible. Verify that your circuit's load current requirement does not exceed the AQV210HLA's 130 mA rating.

Q: What is the significance of the input voltage difference between these parts?

A: The LCA125LS requires 1.2 VDC input, while the AQV210HLA requires 1.14 VDC input. This 0.06 VDC difference is negligible in typical control circuits where input voltage is supplied by standard logic or microcontroller outputs. Both values fall within normal operating tolerances of standard 3.3V or 5V logic supplies.

Q: Are there any compliance or certification differences?

A: The LCA125LS is RoHS3 compliant with MSL 1 (unlimited moisture sensitivity). The AQV210HLA is RoHS compliant with MSL not applicable. Both components carry EAR99 ECCN classification and share the same HTSUS code (8536.41.0030). Both are suitable for regulated applications.

Q: What is the impact of the on-state resistance difference?

A: The LCA125LS has a maximum on-state resistance of 20 Ohms, while the AQV210HLA is rated at 25 Ohms maximum. This 5-Ohm difference results in slightly higher voltage drop across the AQV210HLA during conduction. For a 130 mA load, this represents an additional voltage drop of approximately 0.65V. Verify that your load circuit can tolerate this additional drop.

Q: Are these components pin-compatible?

A: Both components use 6-SMD (0.300", 7.62mm) packages with gull-wing termination. PCB footprints are mechanically and electrically compatible. No circuit board modifications are required for substitution.