LCA210STR Equivalent & Substitute Parts

Part Overview

The LCA210STR is a solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, part of the OptoMOS® series. This component functions as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-SMD surface mount package. The device is rated for 85 mA load current across 0–350 V AC/DC applications with a maximum on-state resistance of 35 Ohms. The LCA210STR maintains Active product status and is RoHS3 compliant. Identifying equivalent and substitute parts is necessary when managing inventory constraints, ensuring supply chain continuity, or optimizing performance characteristics for specific application requirements.

Substiute Parts

LCA210STR

IXYS Integrated Circuits DivisionIn Stock: 1602LCA210STR Datasheet

Current PartRFQ

AQW210EHAZ

Panasonic Electric WorksIn Stock: 3957AQW210EHAZ Datasheet

MFR RecommendedRFQ

AQW610EHAZ

Panasonic Electric WorksIn Stock: 3111AQW610EHAZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LCA210STR is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPST-NO x 2 or compatible form)
• Load voltage range (0–350 V minimum)
• Input voltage compatibility (1.2 VDC nominal)
• Package type (8-SMD with 0.300" / 7.62mm dimensions)
• Mounting type (Surface Mount, Gull Wing termination)
• Output type (AC/DC capable)

Performance Tolerance Parameters:

• Load current rating must equal or exceed 85 mA
• On-state resistance must not exceed 35 Ohms
• Active product status required

The substitute parts AQW210EHAZ and AQW610EHAZ meet these criteria with enhanced electrical performance characteristics. AQW210EHAZ maintains identical circuit configuration (SPST-NO x 2) with improved load current (120 mA) and reduced on-state resistance (25 Ohms). AQW610EHAZ provides extended functionality with SPST-NO + SPST-NC configuration while maintaining compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both AQW210EHAZ and AQW610EHAZ are qualified substitutes for the LCA210STR based on compliance and product status criteria.

AQW210EHAZ provides direct functional equivalence with identical SPST-NO x 2 circuit configuration. This part delivers enhanced performance with 120 mA load current capacity and 25 Ohms maximum on-state resistance, both superior to the LCA210STR specifications. Input voltage requirement (1.14 VDC) is marginally lower, ensuring compatibility with existing drive circuits. RoHS3 compliance and Active product status confirm long-term availability and regulatory alignment.

AQW610EHAZ extends functionality by incorporating both SPST-NO and SPST-NC (Form A and B) switching capability within the same 8-SMD package footprint. This configuration supports applications requiring complementary switching logic. Load current and on-state resistance specifications match AQW210EHAZ performance levels. This part is suitable for designs where dual-form switching provides system-level advantages without package redesign.

Selection between substitutes depends on circuit requirements: AQW210EHAZ for direct replacement with performance enhancement, or AQW610EHAZ for applications benefiting from integrated Form A and Form B switching.

Frequently Asked Questions (FAQ)

Q: Can AQW210EHAZ directly replace LCA210STR in existing designs?

A: Yes. AQW210EHAZ maintains identical circuit configuration (SPST-NO x 2), package dimensions (8-SMD, 0.300" / 7.62mm), and mounting type (Surface Mount, Gull Wing). Load voltage range (0–350 V) and output type (AC/DC) are identical. Input voltage (1.14 VDC vs. 1.2 VDC) is compatible with standard drive circuits. Load current and on-state resistance specifications exceed LCA210STR requirements.

Q: What is the functional difference between AQW210EHAZ and AQW610EHAZ?

A: AQW210EHAZ provides SPST-NO x 2 configuration, matching the LCA210STR circuit topology. AQW610EHAZ integrates SPST-NO + SPST-NC (Form A and B) functionality, enabling complementary switching within a single package. Both share identical electrical ratings (120 mA, 25 Ohms, 0–350 V) and mechanical specifications.

Q: Are package dimensions identical across all three parts?

A: Yes. LCA210STR, AQW210EHAZ, and AQW610EHAZ all use 8-SMD (0.300", 7.62mm) packages with Gull Wing termination style. PCB footprints are compatible without modification.

Q: Do all parts meet current regulatory requirements?

A: Yes. LCA210STR, AQW210EHAZ, and AQW610EHAZ are all RoHS3 compliant and maintain Active product status, confirming regulatory alignment and supply chain continuity.

Q: What load current margin exists with substitute parts?

A: LCA210STR is rated for 85 mA. Both AQW210EHAZ and AQW610EHAZ support 120 mA, providing 35 mA additional capacity. On-state resistance is reduced from 35 Ohms to 25 Ohms, improving power efficiency and thermal performance.

Q: Can AQW610EHAZ be used in applications designed for SPST-NO x 2 only?

A: Yes. AQW610EHAZ contains integrated SPST-NO + SPST-NC functionality. Applications requiring only SPST-NO x 2 operation can utilize the SPST-NO channels while leaving SPST-NC channels unused. Package footprint and electrical specifications remain compatible.