Sensata-Crydom 4D2425 SSR Relay SPST-NO 25A 24-280V Equivalent & Substitute Parts

Part Overview

The Sensata-Crydom 4D2425 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current at 24V to 280V AC output. This component features a hockey puck form factor with screw terminal connections and zero-cross switching capability. The 4D2425 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The D2425 serves as the direct active-production equivalent.

Substiute Parts

4D2425

Sensata-CrydomIn Stock: 7224D2425 Datasheet

Current PartRFQ

D2425

Sensata-CrydomIn Stock: 2854D2425 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4D2425 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A)
• Load Current Rating: Must be 25 A minimum
• Output Voltage Range: Must support 24 V ~ 280 V AC
• Input Voltage Range: Must support 3 ~ 32 VDC
• Output Type: Must be AC with zero-cross switching
• Package / Case: Must be hockey puck form factor
• Termination Style: Must be screw terminal

The D2425 meets all substitution criteria as a direct equivalent manufactured by Sensata-Crydom with identical electrical specifications and mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

The D2425 is the appropriate substitute for the obsolete 4D2425. Both components are manufactured by Sensata-Crydom and maintain identical electrical and mechanical specifications. The D2425 carries active product status with current manufacturing support and improved RoHS3 compliance certification. For applications currently using the 4D2425, direct replacement with the D2425 is supported without circuit modification or re-qualification requirements, provided the original design parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the D2425 be used as a direct replacement for the 4D2425?

A: Yes. The D2425 is electrically and mechanically equivalent to the 4D2425. Both components share identical circuit configuration, current rating, voltage specifications, output type, and physical form factor. Direct substitution is supported.

Q: What is the primary difference between the 4D2425 and D2425?

A: The 4D2425 is classified as obsolete, while the D2425 is an active product with current manufacturing availability. The D2425 also carries ROHS3 compliance certification compared to the RoHS compliance of the 4D2425.

Q: Are there any packaging differences between these parts?

A: The 4D2425 is supplied with standard packaging, while the D2425 is supplied in bulk packaging. Both maintain the same hockey puck form factor and screw terminal configuration.

Q: What are the critical parameters for substituting this SSR relay?

A: Substitution requires matching the SPST-NO circuit configuration, 25A load current rating, 24V to 280V AC output voltage range, 3V to 32V DC input voltage range, AC zero-cross output type, hockey puck package, and screw terminal termination style.

Q: Is the D2425 suitable for new designs?

A: Yes. The D2425 is an active product with full manufacturing support and current compliance certifications, making it appropriate for both replacement applications and new design implementations.