H12WD4875 Equivalent & Substitute Parts

Part Overview

The H12WD4875 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 high-current load switching applications in industrial and commercial environments. The part is currently in active production status with 718 units available in new original inventory.

Substitute parts are identified when they maintain identical electrical performance parameters and mechanical compatibility within the specified operational envelope. Alternative models become necessary when primary inventory is unavailable, when supply chain optimization is required, or when equivalent performance can be achieved through qualified alternatives.

Substiute Parts

H12WD4875

Sensata-CrydomIn Stock: 738H12WD4875 Datasheet

Current PartRFQ

84137130N

CrouzetIn Stock: 94384137130N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H12WD4875 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A) topology
• Output switching type: AC with zero-cross detection
• Input control voltage: 4 – 32 VDC range
• Load voltage capability: 48 – 660 V minimum range
• Current rating: 75 A continuous
• Mechanical form factor: Hockey puck chassis-mount package
• Termination interface: Screw terminal connection
• Environmental compliance: RoHS Compliant status

The substitute part 84137130N (Crouzet, Series GN) meets all specified electrical and mechanical parameters, enabling direct functional replacement in applications requiring H12WD4875 performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD4875 and 84137130N are active production components with RoHS compliance certification. Selection between these parts should be based on:

• Inventory availability and supply chain lead times
• Packaging requirements (bulk versus box format)
• Manufacturer qualification status within your organization
• Procurement cost and volume pricing structures

The electrical and mechanical specifications are equivalent across all critical parameters. No performance degradation or functional limitation occurs when substituting between these parts in applications within the specified operational envelope.

Frequently Asked Questions (FAQ)

Q: Can the 84137130N (Crouzet) directly replace the H12WD4875 (Sensata-Crydom) in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters: SPST-NO circuit configuration, 75 A load current, 48–660 V load voltage range, 4–32 VDC input control voltage, AC zero-cross output type, hockey puck package, and screw terminal termination. No circuit modifications are required.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is valid when the following parameters match: circuit topology (SPST-NO), output switching type (AC zero-cross), input voltage range (4–32 VDC), load voltage range (48–660 V), current rating (75 A), package form factor (hockey puck), mounting type (chassis mount), and termination style (screw terminal).

Q: Does packaging format affect electrical performance?

A: No. The H12WD4875 is supplied in bulk packaging while the 84137130N is supplied in box packaging. Packaging format does not affect component electrical characteristics or functional performance. Selection should be based on inventory management and procurement requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the H12WD4875 and 84137130N carry RoHS Compliant certification, meeting environmental regulatory requirements for restricted substance content.

Q: What is the difference in moisture sensitivity between these parts?

A: The H12WD4875 has MSL classification as Not Applicable. The 84137130N has MSL Level 1 (Unlimited), indicating no moisture sensitivity constraints. This difference does not affect substitution eligibility or operational performance.