LAA100STR Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LAA100STR is an IXYS OptoMOS® solid state relay featuring SPST-NO (1 Form A) configuration in a dual-channel arrangement. This surface mount component operates across 0-350V load voltage with 120mA maximum load current and 25 Ohms on-state resistance. The device is actively manufactured and ROHS3 compliant, designed for applications requiring optically isolated switching in compact 8-SMD packaging. Equivalent parts are identified based on matching electrical performance parameters and mechanical compatibility within the same package footprint.

Substiute Parts

LAA100STR

IXYS Integrated Circuits DivisionIn Stock: 1987LAA100STR Datasheet

Current PartRFQ

AQW210EHAZ

Panasonic Electric WorksIn Stock: 3957AQW210EHAZ Datasheet

MFR RecommendedRFQ

LH1520AACTR

Vishay Semiconductor Opto DivisionIn Stock: 1336LH1520AACTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LAA100STR is determined by the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) x 2 dual-channel arrangement
• Package / Case: 8-SMD (0.300", 7.62mm) with Gull Wing termination
• Load Voltage Range: 0 V ~ 350 V
• Load Current: Minimum 110 mA (allows parts rated 110-120 mA)
• On-State Resistance: Maximum 25 Ohms
• Input Voltage: 1.14 - 1.26 VDC range
• Output Type: AC and DC switching capability
• Compliance: ROHS3 compliant, REACH unaffected

The identified substitutes meet these electrical and mechanical requirements while maintaining functional equivalence for standard switching applications.

Parameter Comparison

Engineering Selection Recommendations

All three components—LAA100STR, AQW210EHAZ, and LH1520AACTR—are actively manufactured and ROHS3 compliant. Selection between these parts is based on availability and specific application requirements within the defined electrical envelope.

The AQW210EHAZ (Panasonic PhotoMOS™ AQW series) matches the LAA100STR across all critical parameters with identical load current (120 mA) and on-state resistance (25 Ohms). Input voltage is 1.14VDC, within the acceptable range.

The LH1520AACTR (Vishay LH1520 series) provides equivalent functionality with slightly lower load current (110 mA) and superior on-state resistance (20 Ohms). Input voltage is 1.26VDC. This part is suitable for applications where lower on-state resistance is beneficial.

All three components support identical load voltage ranges (0-350V) and dual SPST-NO switching in the same 8-SMD package with Gull Wing termination, ensuring mechanical and electrical interchangeability within standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can AQW210EHAZ directly replace LAA100STR in existing designs?

A: Yes. Both components share identical circuit configuration (SPST-NO x 2), load voltage range (0-350V), load current (120 mA), on-state resistance (25 Ohms), and 8-SMD package with Gull Wing termination. Input voltage differs minimally (1.14VDC vs 1.2VDC), remaining within acceptable operating margins.

Q: What are the differences between LH1520AACTR and the other two parts?

A: LH1520AACTR maintains identical load voltage, package, and circuit configuration. Load current is rated at 110 mA (versus 120 mA for the other parts) and on-state resistance is 20 Ohms (versus 25 Ohms). Input voltage is 1.26VDC. These differences represent improved performance characteristics suitable for applications prioritizing lower resistance.

Q: Are all three parts suitable for both AC and DC switching?

A: Yes. All three components support AC and DC output types across the 0-350V load voltage range.

Q: Do package dimensions differ between these parts?

A: No. All three components use identical 8-SMD (0.300", 7.62mm) packaging with Gull Wing termination, ensuring direct PCB footprint compatibility.

Q: Are there compliance differences between these parts?

A: All three parts are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: Which part should be selected for new designs?

A: Selection depends on component availability and application-specific requirements. All three parts are actively manufactured and provide equivalent functionality within the specified electrical parameters.