LCA100L Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LCA100L is an IXYS OptoMOS® solid state relay (SSR) configured as a SPST-NO (Single Pole Single Throw - Normally Open) switching device. This 6-DIP through-hole component is designed for AC and DC load switching applications with a maximum load voltage of 350V and 120mA current capacity. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified when component availability is constrained, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

LCA100L

IXYS Integrated Circuits DivisionIn Stock: 1312LCA100L Datasheet

Current PartRFQ

AQV210HL

Panasonic Electric WorksIn Stock: 1629AQV210HL Datasheet

MFR RecommendedRFQ

LH1540AT

Vishay Semiconductor Opto DivisionIn Stock: 7260LH1540AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCA100L are qualified based on strict electrical and mechanical compatibility criteria. The following parameters must align to ensure functional interchangeability:

Critical Compatibility Parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Package type: 6-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Termination style: PC Pin
• Load voltage range: 0V ~ 350V
• Output type: AC and DC switching capability
• Load current capacity: minimum 120mA
• On-state resistance: maximum 25 Ohms

The LCA100L has two qualified substitutes: the Panasonic AQV210HL and the Vishay LH1540AT. Both parts meet all critical electrical and mechanical parameters within the allowed tolerance ranges specified for this product category.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LCA100L, AQV210HL, and LH1540AT—are active production components with current availability. Selection among these parts is based on the following engineering criteria:

LCA100L (IXYS OptoMOS®): Primary specification. ROHS3 compliant with unlimited moisture sensitivity rating. On-state resistance of 25 Ohms maximum. Input voltage requirement of 1.2VDC.

AQV210HL (Panasonic PhotoMOS™): Direct substitute with RoHS compliance. Offers 130mA load current capacity, exceeding the 120mA requirement. Input voltage of 1.14VDC is lower than the primary part. Moisture sensitivity level is not applicable, indicating different packaging or material composition. On-state resistance matches at 25 Ohms maximum.

LH1540AT (Vishay LH1540 Series): Direct substitute with ROHS3 compliance and unlimited moisture sensitivity rating. Load current matches at 120mA. Input voltage of 1.26VDC is within acceptable range. On-state resistance of 20 Ohms maximum is superior to the primary specification, providing lower switching losses.

All three parts share identical load voltage range (0V ~ 350V), package configuration (6-DIP), mounting type (through hole), and termination style (PC pin). Selection may be based on supply availability, lead time, or specific application requirements within the defined electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can the AQV210HL be used as a direct replacement for the LCA100L in all applications?

A: The AQV210HL meets all critical electrical and mechanical compatibility parameters. The 130mA load current capacity exceeds the 120mA requirement. The input voltage of 1.14VDC is lower than the LCA100L specification of 1.2VDC. Both parts support 0V ~ 350V load voltage and AC/DC switching. The 6-DIP package and PC pin termination are identical. Substitution is valid within the specified electrical operating range.

Q: What is the difference in on-state resistance between these parts?

A: The LCA100L and AQV210HL both specify a maximum on-state resistance of 25 Ohms. The LH1540AT specifies a maximum of 20 Ohms, which is lower. Lower on-state resistance reduces power dissipation during switching operations. All three values are within acceptable ranges for SPST-NO solid state relay applications in this voltage and current class.

Q: Are there any moisture sensitivity differences between the substitutes?

A: The LCA100L and LH1540AT both have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions. The AQV210HL lists moisture sensitivity as Not Applicable, reflecting different packaging or material specifications from the Panasonic manufacturer. This does not affect functional compatibility but may influence storage and handling procedures according to each manufacturer's guidelines.

Q: Do all three parts support both AC and DC load switching?

A: Yes. The LCA100L, AQV210HL, and LH1540AT all specify output type as AC and DC, confirming capability for both alternating and direct current load switching within the 0V ~ 350V load voltage range.

Q: Is the 6-DIP package identical across all three parts?

A: Yes. All three parts use the 6-DIP (0.300", 7.62mm) package with PC pin termination and through-hole mounting. Pin-to-pin compatibility is confirmed for direct PCB substitution without layout modifications.

Q: What input voltage range should be considered for circuit design?

A: The LCA100L requires 1.2VDC input. The AQV210HL requires 1.14VDC input. The LH1540AT requires 1.26VDC input. Circuit design should accommodate the highest input voltage requirement (1.26VDC for LH1540AT) to ensure reliable operation across all three qualified substitutes.