LCA710S Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LCA710S is an IXYS OptoMOS® solid state relay (SSR) configured as a SPST-NO (Single Pole Single Throw - Normally Open) switch. This 6-SMD surface mount component operates with a 1.2VDC input and supports load voltages from 0V to 60V at 1A maximum current. The device is designed for applications requiring galvanic isolation and fast switching without mechanical contacts. Substitute parts are necessary when addressing supply chain constraints, packaging preferences, or performance requirements that exceed the base specification.

Substiute Parts

LCA710S

IXYS Integrated Circuits DivisionIn Stock: 1345LCA710S Datasheet

Current PartRFQ

LCA710STR

LittelfuseIn Stock: 16952LCA710STR Datasheet

DirectRFQ

AQV252GA

Panasonic Electric WorksIn Stock: 1441AQV252GA Datasheet

MFR RecommendedRFQ

ASSR-1511-301E

Broadcom LimitedIn Stock: 1342ASSR-1511-301E Datasheet

MFR RecommendedRFQ

ASSR-1511-501E

Broadcom LimitedIn Stock: 4336ASSR-1511-501E Datasheet

MFR RecommendedRFQ

ASSR-1611-301E

Broadcom LimitedIn Stock: 1441ASSR-1611-301E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LCA710S is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A)
• Package / Case: Must be 6-SMD (0.300", 7.62mm) with Gull Wing termination
• Voltage - Load Range: Must support 0V ~ 60V
• Output Type: Must support both AC and DC
• Mounting Type: Must be Surface Mount
• Load Current: Minimum 1A (equal or greater current rating is acceptable)
• On-State Resistance: Lower resistance values indicate improved performance but do not prevent substitution
• Input Voltage: Nominal 1.2VDC to 1.3VDC range is acceptable
• Compliance: Must maintain ROHS3 compliance and active product status

Substitute parts are grouped into two categories: direct equivalents (identical electrical and mechanical specifications) and performance-enhanced alternatives (higher current ratings or lower on-state resistance).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (1A Load Current)

LCA710STR (Littelfuse) is a direct equivalent to LCA710S. Both devices share identical electrical specifications, package configuration, and compliance certifications. Selection between these two is based on packaging format preference (Tube vs. Cut Tape & Digi-Reel®) and supplier availability.

ASSR-1511-301E and ASSR-1511-501E (Broadcom) are functionally equivalent alternatives with input voltage tolerance of 1.3VDC and identical load current and on-state resistance specifications. These devices differ only in packaging format (Tube vs. Cut Tape & Digi-Reel®). Both maintain ROHS3 compliance and active product status.

Performance-Enhanced Alternatives (2.5A Load Current)

ASSR-1611-301E (Broadcom) and AQV252GA (Panasonic) provide increased load current capacity of 2.5A with reduced on-state resistance (100 mOhms and 120 mOhms respectively, compared to 500 mOhms). These devices are suitable for applications requiring higher switching capacity within the same 0V ~ 60V load voltage range. Both maintain ROHS3 compliance and active product status. AQV252GA operates at 1.14VDC input, providing the lowest input voltage requirement among all listed alternatives.

All substitute parts maintain the same 6-SMD (0.300", 7.62mm) package footprint with Gull Wing termination, ensuring PCB layout compatibility with the LCA710S.

Frequently Asked Questions (FAQ)

Q: Can ASSR-1511-301E replace LCA710S in a 1A application?

A: Yes. ASSR-1511-301E meets all substitution criteria: identical circuit configuration (SPST-NO), package (6-SMD Gull Wing), load voltage range (0V ~ 60V), load current (1A), output type (AC/DC), and compliance (ROHS3). Input voltage differs by 0.1VDC (1.3VDC vs. 1.2VDC), which is within acceptable tolerance for SSR applications.

Q: What is the advantage of using ASSR-1611-301E or AQV252GA?

A: These devices provide 2.5A load current capacity compared to 1A in the LCA710S. Additionally, on-state resistance is significantly reduced (100-120 mOhms vs. 500 mOhms), resulting in lower power dissipation and improved thermal performance. These characteristics make them suitable for higher-power switching applications within the same voltage range.

Q: Are all substitute parts pin-compatible with LCA710S?

A: All listed substitute parts share the same 6-SMD (0.300", 7.62mm) package with Gull Wing termination. PCB footprint compatibility is maintained across all alternatives. Verify pinout assignment in device datasheets before assembly.

Q: What is the difference between LCA710STR and LCA710S?

A: LCA710STR and LCA710S are electrically and mechanically identical. The primary difference is packaging format: LCA710S is supplied in Tube packaging, while LCA710STR is available in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and supplier availability.

Q: Can I use AQV252GA as a direct replacement for LCA710S?

A: AQV252GA is functionally compatible but not a direct replacement. It provides enhanced performance (2.5A vs. 1A, 120 mOhms vs. 500 mOhms) and operates at a lower input voltage (1.14VDC vs. 1.2VDC). It is suitable for applications requiring higher current capacity. Verify that the application circuit can accommodate the lower input voltage requirement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (LCA710STR, ASSR-1511-301E, ASSR-1511-501E, ASSR-1611-301E, and AQV252GA) maintain ROHS3 compliance. All devices are active products with current manufacturer support.