LH1532AB Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LH1532AB is a solid state relay (SSR) manufactured by Vishay Semiconductor Opto Division, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-DIP through-hole package. This component is rated for 110 mA load current at 0–350 V AC/DC operation with a maximum on-state resistance of 20 Ohms. The LH1532AB carries Last Time Buy status, indicating discontinued production. Equivalent substitute parts are necessary for ongoing system designs and maintenance applications requiring SPST-NO solid state relay functionality in the same package footprint.

Substiute Parts

LH1532AB

Vishay Semiconductor Opto DivisionIn Stock: 2388LH1532AB Datasheet

Current PartRFQ

LH1526AB

Vishay Semiconductor Opto DivisionIn Stock: 20362LH1526AB Datasheet

MFR RecommendedRFQ

AQW210HL

Panasonic Electric WorksIn Stock: 1343AQW210HL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LH1532AB are qualified based on the following electrical and mechanical parameters:

• Circuit Configuration: SPST-NO (1 Form A) x 2 channels
• Package / Case: 8-DIP (0.300", 7.62mm) with PC Pin termination
• Mounting Type: Through Hole
• Output Type: AC and DC operation capability
• Load Voltage Range: 0 V ~ 350 V or higher
• Load Current: 100 mA or greater
• On-State Resistance: 25 Ohms or lower
• Input Voltage: 1.14 VDC or higher
• Compliance: ROHS3 Compliant

The LH1526AB and AQW210HL meet these substitution criteria while maintaining functional and mechanical compatibility with the LH1532AB in PCB applications.

Parameter Comparison

Engineering Selection Recommendations

LH1526AB (Vishay Semiconductor Opto Division): This substitute maintains manufacturer continuity within the Vishay Opto Division product line. It offers an extended load voltage range (0–400 V) compared to the LH1532AB, providing additional design margin for higher voltage applications. Load current is rated at 100 mA, which is 10 mA lower than the original part. On-state resistance increases to 25 Ohms maximum. The LH1526AB carries Active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance is maintained.

AQW210HL (Panasonic Electric Works PhotoMOS™ AQW Series): This substitute provides the highest load current rating at 120 mA, exceeding the LH1532AB specification by 10 mA. Load voltage range matches the original at 0–350 V. Input voltage requirement is lowest among the three parts at 1.14 VDC. On-state resistance is 25 Ohms maximum. The AQW210HL carries Active product status with ROHS3 compliance. This option is suitable for applications requiring maximum current handling capacity within the same voltage envelope.

Both substitutes are electrically and mechanically compatible with the LH1532AB in standard through-hole PCB applications and maintain all required compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the LH1526AB directly replace the LH1532AB in existing designs?

A: Yes. Both parts share identical circuit configuration (SPST-NO x 2), package (8-DIP 0.300"), mounting type (through-hole), and termination style (PC pin). The LH1526AB operates within compatible input voltage and load voltage ranges. Load current is 10 mA lower (100 mA vs. 110 mA), and on-state resistance is 5 Ohms higher (25 Ohms vs. 20 Ohms). Verify that your application load current does not exceed 100 mA and that the increased on-state resistance does not impact circuit performance.

Q: Can the AQW210HL directly replace the LH1532AB in existing designs?

A: Yes. The AQW210HL matches the LH1532AB in circuit configuration, package, mounting type, and termination style. Load voltage range is identical (0–350 V). Load current is rated 10 mA higher (120 mA vs. 110 mA), providing additional capacity. On-state resistance is 5 Ohms higher (25 Ohms vs. 20 Ohms). The AQW210HL is suitable for applications requiring equal or lower load current than 120 mA.

Q: What are the key differences between LH1526AB and AQW210HL?

A: Both are SPST-NO x 2 relays in 8-DIP packages. The LH1526AB offers extended load voltage capability (0–400 V vs. 0–350 V) and is from Vishay. The AQW210HL offers higher load current (120 mA vs. 100 mA) and is from Panasonic. On-state resistance is identical at 25 Ohms maximum for both. Input voltage requirements are similar (1.15 VDC vs. 1.14 VDC). Select based on voltage and current requirements of your specific application.

Q: Are all three parts ROHS3 compliant?

A: Yes. The LH1532AB, LH1526AB, and AQW210HL are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the significance of the LH1532AB being Last Time Buy status?

A: Last Time Buy status indicates that the LH1532AB is no longer in active production. Existing inventory may be available for a limited time. For new designs or long-term production requirements, selection of an Active status substitute (LH1526AB or AQW210HL) is recommended to ensure ongoing supply chain availability.