LH1525AT Equivalent & Substitute Parts

Part Overview

The LH1525AT is a solid-state relay (SSR) manufactured by Vishay Semiconductor Opto Division, designed for SPST-NO (Single Pole Single Throw - Normally Open) switching applications. This 6-DIP through-hole component operates with AC and DC loads up to 400V and supports load currents of 250mA. The part is currently active in production and widely available in inventory (12,600 pcs). Equivalent and substitute parts are identified when design requirements change, supply constraints occur, or application parameters shift within acceptable electrical and mechanical tolerances.

Substiute Parts

LH1525AT

Vishay Semiconductor Opto DivisionIn Stock: 12644LH1525AT Datasheet

Current PartRFQ

AQV210HL

Panasonic Electric WorksIn Stock: 1629AQV210HL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LH1525AT is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Package / Case: Must be 6-DIP (0.300", 7.62mm) for PCB footprint compatibility
• Mounting Type: Must be Through Hole to match assembly requirements
• Output Type: Must support AC and DC operation
• Voltage - Load: Substitute must support the required load voltage range; lower maximum ratings are acceptable only if the application operates within the substitute's specified range
• Load Current: Substitute must support the required load current; lower ratings are acceptable only if the application operates within the substitute's specified range
• Termination Style: Must be PC Pin for electrical connection compatibility

The AQV210HL from Panasonic Electric Works meets these substitution criteria. While it has a lower maximum load voltage (350V vs. 400V) and load current (130mA vs. 250mA), it is suitable for applications operating within its electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

LH1525AT Selection: Choose this part when applications require the full 250mA load current capacity and 400V maximum load voltage rating. This part is ROHS3 compliant and actively produced by Vishay Semiconductor Opto Division.

AQV210HL Selection: Choose this part when application load current does not exceed 130mA and load voltage does not exceed 350V. The AQV210HL offers lower on-state resistance (25 Ohms vs. 36 Ohms), which may reduce heat dissipation in current-limited applications. This part is RoHS compliant and actively produced by Panasonic Electric Works.

Both parts share identical circuit configuration, package footprint, and mounting characteristics, enabling direct PCB substitution when electrical specifications align with application requirements.

Frequently Asked Questions (FAQ)

Q: Can AQV210HL replace LH1525AT in all applications?

A: No. The AQV210HL has lower maximum load current (130mA vs. 250mA) and maximum load voltage (350V vs. 400V). Substitution is valid only when the application operates within the AQV210HL's electrical specifications.

Q: Are the packages physically identical?

A: Yes. Both parts use 6-DIP (0.300", 7.62mm) packaging with PC Pin termination, enabling direct PCB footprint compatibility without layout modifications.

Q: What is the difference in on-state resistance?

A: The AQV210HL has a maximum on-state resistance of 25 Ohms compared to 36 Ohms for the LH1525AT. Lower resistance reduces voltage drop across the relay during conduction, resulting in lower power dissipation in the switching element.

Q: Are both parts RoHS compliant?

A: Yes. The LH1525AT is ROHS3 compliant, and the AQV210HL is RoHS compliant. Both meet environmental and hazardous substance restrictions for electronic components.

Q: What is the input voltage requirement?

A: Both parts require approximately 1.15VDC input (LH1525AT: 1.16VDC; AQV210HL: 1.14VDC). Input voltage specifications are functionally equivalent for practical circuit design.

Q: Can I use LH1525AT in place of AQV210HL?

A: Yes. The LH1525AT has higher electrical ratings (250mA, 400V) and is compatible with all applications designed for the AQV210HL. No design modifications are required.