LH1500AAB Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LH1500AAB is an active-status solid state relay (SSR) manufactured by Vishay Semiconductor Opto Division. This SPST-NO (1 Form A) device operates as a surface mount component in a 6-SMD package with gull wing termination. The relay handles AC and DC loads up to 350V at 150mA maximum load current, with a 1.25VDC input trigger voltage. The device is RoHS3 compliant and carries an MSL rating of 1 (unlimited moisture sensitivity). Equivalent and substitute parts are identified when they maintain functional compatibility across critical electrical parameters and mechanical form factors while meeting the same or equivalent compliance standards.

Substiute Parts

LH1500AAB

Vishay Semiconductor Opto DivisionIn Stock: 1631LH1500AAB Datasheet

Current PartRFQ

AQV210HLA

Panasonic Electric WorksIn Stock: 1112AQV210HLA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LH1500AAB is determined by strict alignment of the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Package / Case: Must be 6-SMD (0.300", 7.62mm) with gull wing termination for PCB compatibility
• Mounting Type: Must be surface mount for assembly process compatibility
• Output Type: Must support both AC and DC loads
• Voltage - Load Range: Must accommodate 0 V ~ 350 V operation
• Load Current: Substitute must support minimum 130 mA (allowing for minor derating from the 150 mA specification)
• On-State Resistance: Must not exceed 25 Ohms (allowing for minor increase from 20 Ohms maximum)
• Input Voltage: Must operate at or below 1.25VDC trigger voltage
• Compliance: Must meet RoHS requirements (RoHS3 or RoHS Compliant acceptable)

The AQV210HLA from Panasonic Electric Works meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the LH1500AAB and AQV210HLA maintain active product status with current manufacturing support. The LH1500AAB carries RoHS3 compliance, while the AQV210HLA carries RoHS compliance. Both devices meet the electrical and mechanical requirements for direct substitution in applications requiring SPST-NO solid state relay functionality in the 6-SMD package format.

The AQV210HLA operates with a lower input trigger voltage (1.14VDC versus 1.25VDC), which may provide improved sensitivity in control circuits. The load current specification of 130 mA on the AQV210HLA is suitable for applications where the full 150 mA capability of the LH1500AAB is not required. The slightly higher on-state resistance (25 Ohms versus 20 Ohms) remains within acceptable limits for most AC/DC switching applications at these current levels.

Frequently Asked Questions (FAQ)

Q: Can the AQV210HLA directly replace the LH1500AAB in existing designs?

A: Yes. Both devices share identical circuit configuration (SPST-NO), package format (6-SMD with 0.300" / 7.62mm spacing), termination style (gull wing), and load voltage range (0 V ~ 350 V). PCB layouts and assembly processes require no modification.

Q: What is the significance of the different input voltages (1.25VDC vs. 1.14VDC)?

A: The AQV210HLA requires a lower input voltage to trigger. In applications where the control signal is marginal or noise-sensitive, the lower trigger voltage of the AQV210HLA may provide improved reliability. In standard applications, both devices will operate identically when driven by typical logic-level signals.

Q: Does the 20 mA difference in load current rating affect substitution?

A: The AQV210HLA is rated for 130 mA maximum load current compared to the LH1500AAB at 150 mA. For applications requiring the full 150 mA capability, the LH1500AAB is the appropriate choice. For applications operating at or below 130 mA, the AQV210HLA is fully compatible.

Q: Are there compliance differences between these devices?

A: The LH1500AAB is RoHS3 compliant, while the AQV210HLA is RoHS compliant. Both meet current environmental and hazardous substance restrictions. RoHS3 represents a more recent compliance standard; however, both devices are acceptable for applications requiring RoHS compliance.

Q: What is the impact of the 5 Ohm difference in on-state resistance?

A: The AQV210HLA has a maximum on-state resistance of 25 Ohms versus 20 Ohms for the LH1500AAB. At 130 mA load current, this results in a maximum voltage drop of 3.25V across the AQV210HLA versus 2.6V across the LH1500AAB. For most AC/DC switching applications, this difference is negligible. Applications with strict voltage drop requirements should verify compatibility with the higher resistance value.

Q: Are both devices available in the same packaging format?

A: Yes. Both the LH1500AAB and AQV210HLA are supplied in 6-SMD packages with 0.300" (7.62mm) spacing and gull wing termination. No package conversion or adapter components are required for substitution.