H12D4875H Solid State Relay - Equivalent & Substitute Parts

Part Overview

The H12D4875H is a solid state relay (SSR) manufactured by Sensata Technologies, designed for AC load switching applications. This SPST-NO (1 Form A) relay operates with DC input control voltage (4-32VDC) and switches AC loads up to 75A across a voltage range of 48-530V. The device features a hockey puck form factor with quick connect termination and is mounted on a chassis. As an active product with RoHS compliance and unlimited moisture sensitivity rating, the H12D4875H remains in production. Equivalent and substitute parts may be required due to supply chain constraints, regional availability, or specific application requirements where alternative electrical or mechanical specifications are acceptable.

Substiute Parts

H12D4875H

Sensata TechnologiesIn Stock: 989H12D4875H Datasheet

Current PartRFQ

84138150N

CrouzetIn Stock: 93184138150N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the H12D4875H is based on electrical and mechanical compatibility within the solid state relay category. The primary substitute identified is the Crouzet 84138150N, which shares the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC, Zero Cross
• Input voltage range: 4 - 32VDC (identical)
• Package form factor: Hockey Puck
• Mounting type: Chassis Mount
• Product status: Active
• RoHS compliance: Yes

Substitution is valid when the load current and voltage specifications of the substitute part meet or exceed the application requirements. The 84138150N provides 90A load current capacity and operates across 24-500V, which encompasses most applications within the H12D4875H's 75A / 48-530V envelope, with the exception of loads below 24V or above 500V.

Parameter Comparison

Engineering Selection Recommendations

Both the H12D4875H and 84138150N are active products with RoHS compliance and identical regulatory classification (ECCN: EAR99). Selection between these parts depends on application-specific load voltage and termination requirements.

The H12D4875H is suitable for applications requiring load voltages from 48V to 530V with quick connect termination. The 84138150N accommodates load voltages from 24V to 500V with screw terminal connections and provides higher current capacity (90A versus 75A).

For applications operating below 48V or above 500V, the H12D4875H is the appropriate choice. For applications within the 48-500V range where screw terminal connections are acceptable, the 84138150N provides equivalent functionality with increased current margin. Termination style compatibility with the application's connector interface must be confirmed during selection.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84138150N directly replace the Sensata H12D4875H?

A: Direct replacement is valid for applications where the load voltage operates between 48V and 500V. The 84138150N's screw terminal connection must be compatible with the application's wiring interface. Applications requiring quick connect termination or load voltages outside the 24-500V range require the H12D4875H.

Q: What is the significance of the load voltage difference between these parts?

A: The H12D4875H operates across 48-530V, while the 84138150N operates across 24-500V. Applications with loads below 48V or above 500V cannot use the 84138150N as a substitute. The 84138150N's lower minimum voltage (24V) does not extend compatibility below 48V for the H12D4875H application space.

Q: Are the termination styles interchangeable?

A: No. The H12D4875H uses quick connect 0.250" (6.3mm) termination, while the 84138150N uses screw terminals. The application's connector interface must accommodate the selected termination style. Adapter solutions are not recommended for solid state relay applications.

Q: Do both parts have identical input voltage specifications?

A: Yes. Both the H12D4875H and 84138150N accept DC input control voltage from 4-32VDC with AC zero-cross output switching. Input voltage compatibility is not a limiting factor in substitution decisions.

Q: What is the current capacity difference, and does it affect substitution?

A: The H12D4875H is rated for 75A load current, while the 84138150N is rated for 90A. The 84138150N's higher rating provides additional current margin but does not reduce the H12D4875H's suitability for applications requiring 75A or less. Current capacity alone does not restrict substitution when the 84138150N is used.