HD4875G Equivalent & Substitute Parts

Part Overview

The HD4875G is a solid state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (1 Form A) hockey puck configuration. This component is designed for AC load switching applications with zero-cross detection capability. The part is currently in active production status with 1,151 units available in inventory. Finding equivalent substitute parts is necessary to ensure supply chain continuity, support design flexibility across manufacturing facilities, and maintain operational availability when primary sources experience allocation constraints.

Substiute Parts

HD4875G

Sensata-CrydomIn Stock: 1238HD4875G Datasheet

Current PartRFQ

84137130N

CrouzetIn Stock: 94384137130N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HD4875G 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 detection to preserve load control characteristics
• Input Voltage Range: Must accommodate 4 ~ 32 VDC control signal specification
• Load Current Rating: Must be rated for 75 A continuous operation
• Load Voltage Range: Must support minimum 48 V operation; upper voltage limit may extend beyond 530 V without compromising compatibility
• Mounting Type: Must be chassis mount to ensure mechanical fit in existing designs
• Termination Style: Must use screw terminal connections for electrical interface compatibility
• Package / Case: Must be hockey puck form factor for dimensional and thermal interface compatibility
• Compliance: Must maintain RoHS compliance and MSL 1 rating for manufacturing process compatibility

The substitute part 84137130N (Crouzet GN series) meets all critical substitution criteria. The load voltage range extends to 660 V, which represents an expanded operational envelope while maintaining full compatibility with the 48 V minimum specification.

Parameter Comparison

Engineering Selection Recommendations

Both the HD4875G and 84137130N are active production components with full RoHS compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and assembly processes. The 84137130N offers an extended load voltage range (660 V maximum versus 530 V), which provides additional operational margin for applications operating near the upper voltage specification of the HD4875G. Selection between these parts should be based on supply availability, lead time requirements, and procurement cost considerations. Both components satisfy identical electrical and mechanical interface requirements for direct substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the 84137130N (Crouzet) be used as a direct replacement for the HD4875G (Sensata-Crydom)?

A: Yes. Both parts share identical circuit configuration (SPST-NO), output type (AC with zero-cross), input voltage range (4 ~ 32 VDC), load current rating (75 A), mounting type (chassis mount), termination style (screw terminal), and package form factor (hockey puck). The 84137130N supports an extended load voltage range (48 ~ 660 V) compared to the HD4875G (48 ~ 530 V), making it fully compatible for all applications within the original specification.

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

A: Substitution eligibility is determined by: circuit configuration (SPST-NO 1 Form A), output type (AC with zero-cross detection), input voltage range (4 ~ 32 VDC), load current rating (75 A), mounting type (chassis mount), termination style (screw terminal), and package form factor (hockey puck). All these parameters must match or exceed the original specification.

Q: Does the extended voltage range of the 84137130N affect compatibility?

A: No. The 84137130N's extended load voltage range (660 V maximum) is a superset of the HD4875G specification (530 V maximum). Applications operating within the original 48 ~ 530 V range experience no compatibility issues. The extended range provides additional operational margin without introducing any constraints.

Q: Are both parts RoHS compliant?

A: Yes. Both the HD4875G and 84137130N are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and long-term storage requirements.

Q: What is the difference in packaging between these parts?

A: Both parts use identical hockey puck form factor packaging with screw terminal connections. No mechanical or thermal interface modifications are required for substitution.