CD2425E2U Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CD2425E2U is a solid state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (Single Pole Single Throw - Normally Open) configuration with dual output capability in a hockey puck package. This component is rated for 25A load current with input voltage range of 15–32VDC and load voltage range of 24–280V AC with zero-cross switching. The CD2425E2U is currently listed as obsolete, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure supply chain availability.

Key Parameters

Parameter	CD2425E2U
Manufacturer	Sensata-Crydom
Circuit Configuration	SPST-NO (1 Form A) x 2
Output Type	AC, Zero Cross
Voltage - Input	15–32VDC
Voltage - Load	24–280V
Load Current	25A
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Package / Case	Hockey Puck
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the CD2425E2U is determined by electrical and mechanical compatibility across the following critical parameters:

Circuit Configuration: SPST-NO (1 Form A) x 2 dual output
Load Current Rating: 25A minimum
Load Voltage Range: 24–280V AC with zero-cross switching
Package Type: Hockey Puck chassis mount with screw terminals
Input Voltage Compatibility: Minimum 15VDC input capability

Two substitute parts meet these criteria with varying input voltage specifications and product status classifications. The substitutes maintain identical load ratings, output switching characteristics, and mechanical form factors, ensuring direct functional replacement in existing designs.

Parameter Comparison

Parameter	CD2425E2U (Obsolete)	CC2425W2U (Direct)	CD2425W2U (Direct)	CD2425E3U (MFR Recommended)
Manufacturer	Sensata-Crydom	Sensata Technologies	Sensata-Crydom	Sensata-Crydom
Product Status	Obsolete	Active	Active	Active
Circuit Configuration	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2
Output Type	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross
Voltage - Input	15–32VDC	4–32VDC	4–32VDC	15–32VDC
Voltage - Load	24–280V	24–280V	24–280V	24–280V
Load Current	25A	25A	25A	25A
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal
Package / Case	Hockey Puck	Hockey Puck	Hockey Puck	Hockey Puck
Series	Evolution Dual	Evolution Dual	Evolution Dual	Evolution Dual
RoHS Status	Not specified	ROHS3 Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

CD2425E3U is the manufacturer-recommended substitute. This part maintains identical input voltage specifications (15–32VDC) to the obsolete CD2425E2U, ensuring direct compatibility with existing control circuits without modification. CD2425E3U carries active product status with RoHS compliance certification.

CD2425W2U provides an alternative with expanded input voltage range (4–32VDC), offering greater flexibility for designs with lower control voltage sources. This part is manufactured by Sensata-Crydom with active product status and RoHS compliance.

CC2425W2U is functionally equivalent with the same expanded input voltage range (4–32VDC). Manufactured by Sensata Technologies, this part carries ROHS3 compliance and active product status. Selection of this part introduces a secondary manufacturer within the Sensata corporate family.

All three substitutes are currently in active production with confirmed inventory availability and maintain identical load current, voltage, switching characteristics, and mechanical form factors.

Frequently Asked Questions (FAQ)

Q: Can CD2425E3U directly replace CD2425E2U without circuit modification?

A: Yes. CD2425E3U maintains the identical input voltage range (15–32VDC) and all electrical and mechanical specifications of the obsolete CD2425E2U, enabling direct substitution.

Q: What is the difference between CD2425W2U and CD2425E3U?

A: Both parts are manufactured by Sensata-Crydom with identical load ratings and output characteristics. CD2425W2U accepts input voltage from 4–32VDC, while CD2425E3U accepts 15–32VDC. Selection depends on the minimum control voltage available in the application.

Q: Is CC2425W2U compatible with designs specified for CD2425E2U?

A: Yes. CC2425W2U provides electrical and mechanical compatibility with identical load current, voltage range, circuit configuration, and hockey puck package. The part is manufactured by Sensata Technologies, a related entity within the Sensata corporate structure.

Q: Are all substitute parts RoHS compliant?

A: Yes. CD2425E3U and CD2425W2U carry RoHS compliance certification. CC2425W2U carries ROHS3 compliance certification. All three substitutes meet current environmental compliance requirements.

Q: What is the significance of the expanded input voltage range in CD2425W2U and CC2425W2U?

A: The 4–32VDC input range accommodates control circuits with lower minimum voltage sources compared to the 15–32VDC range of CD2425E3U. This expanded range provides design flexibility but does not affect load switching performance or current capacity.

Q: Are all substitutes available in the same hockey puck package?

A: Yes. All substitute parts use identical hockey puck chassis mount packaging with screw terminal connections, ensuring mechanical compatibility with existing mounting and wiring infrastructure.

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