H12WD4825GH Equivalent & Substitute Parts

Part Overview

The H12WD4825GH is a solid-state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (1 Form A) hockey puck configuration. This component functions as an AC output relay with zero-cross switching capability, designed for industrial switching applications requiring galvanic isolation between control and load circuits. The part is currently in active production status with RoHS compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

H12WD4825GH

Sensata-CrydomIn Stock: 1046H12WD4825GH Datasheet

Current PartRFQ

84138010N

CrouzetIn Stock: 86484138010N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H12WD4825GH is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Output Type: Must be AC with zero-cross switching to preserve load switching characteristics
• Load Current Rating: Must be rated for 25 A minimum
• Input Voltage Range: Must accommodate 4 ~ 32 VDC control signal
• Load Voltage Range: Must support operation within or encompassing the 48 V ~ 660 V range
• Mounting Type: Must be chassis mount with hockey puck form factor
• Termination Style: Must use screw terminal connections
• Product Status: Must be active production status
• Compliance: Must maintain RoHS compliance

The identified substitute part (84138010N) maintains functional equivalence in circuit topology, switching characteristics, input voltage range, current rating, mounting configuration, and termination style. The load voltage range differs (12 V ~ 270 V versus 48 V ~ 660 V), which restricts its application scope to lower voltage systems within the specified range.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD4825GH and 84138010N are active production components with RoHS compliance and identical moisture sensitivity ratings. Selection between these parts is determined by load voltage requirements:

• H12WD4825GH: Select for applications requiring load voltage operation from 48 V to 660 V
• 84138010N: Select for applications requiring load voltage operation from 12 V to 270 V

Both components share identical input voltage range (4 ~ 32 VDC), load current capacity (25 A), circuit topology (SPST-NO), switching characteristics (AC, zero-cross), and physical form factor (hockey puck chassis mount with screw terminals). The load voltage range difference is the sole technical differentiator between these parts.

Frequently Asked Questions (FAQ)

Q: Can the 84138010N replace the H12WD4825GH in all applications?

A: No. The 84138010N has a maximum load voltage rating of 270 V, while the H12WD4825GH supports up to 660 V. The 84138010N is suitable only for applications operating within the 12 V to 270 V load voltage range.

Q: Are the physical dimensions and mounting interfaces identical?

A: Yes. Both parts use the hockey puck form factor with chassis mount configuration and screw terminal termination, ensuring mechanical interchangeability when electrical parameters are compatible.

Q: Do both parts require identical control signal voltage?

A: Yes. Both the H12WD4825GH and 84138010N accept input control signals in the 4 ~ 32 VDC range.

Q: What is the significance of zero-cross switching in these relays?

A: Zero-cross switching ensures the relay transitions at the AC voltage zero-crossing point, reducing electromagnetic interference and extending load component life by minimizing inrush current stress.

Q: Are there any compliance differences between these parts?

A: No. Both parts are RoHS compliant with MSL rating of 1 (unlimited moisture sensitivity), and both maintain active production status.

Q: Can these parts be used interchangeably based on current rating alone?

A: No. While both parts are rated for 25 A load current, the load voltage range must be verified for the specific application before substitution.