CD2425E4U Equivalent & Substitute Parts

Part Overview

The CD2425E4U 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 channels 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 24–280VAC, featuring zero-cross switching for AC applications.

The CD2425E4U is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for replacement, repair, and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Sensata-Crydom
Circuit Configuration	SPST-NO (1 Form A) x 2
Output Type	AC, Zero Cross
Load Current Rating	25 A
Load Voltage Range	24 V – 280 V
Input Voltage Range	15 – 32 VDC
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Package Type	Hockey Puck
Series	Evolution Dual

Substitute Part Grouping Explanation

Substitution eligibility for the CD2425E4U is determined by the following critical parameters:

Circuit Configuration: Must be SPST-NO (1 Form A) x 2
Load Current Rating: Must be 25 A
Load Voltage Range: Must support 24 V – 280 V
Output Type: Must be AC with zero-cross switching
Package Type: Must be hockey puck form factor
Mounting Type: Must be chassis mount
Termination Style: Must be screw terminal

The substitute parts identified below meet all these core electrical and mechanical requirements. Variations in input voltage range (15–32VDC versus 4–32VDC) and product status (obsolete versus active) do not affect functional substitutability for applications within the specified input voltage window.

Parameter Comparison

Parameter	CD2425E4U	CC2425W4U	CD2425W4U	CD2425E3U
Manufacturer	Sensata-Crydom	Sensata-Crydom	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
Load Current Rating	25 A	25 A	25 A	25 A
Load Voltage Range	24 V – 280 V	24 V – 280 V	24 V – 280 V	24 V – 280 V
Input Voltage Range	15 – 32 VDC	4 – 32 VDC	4 – 32 VDC	15 – 32 VDC
Output Type	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal
Package Type	Hockey Puck	Hockey Puck	Hockey Puck	Hockey Puck
Series	Evolution Dual	Evolution Dual	Evolution Dual	Evolution Dual
RoHS Status	Not specified	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

All three substitute parts (CC2425W4U, CD2425W4U, and CD2425E3U) are functionally equivalent to the CD2425E4U within the specified electrical and mechanical parameters. Selection should be based on the following criteria:

For new designs and long-term availability: CD2425W4U or CD2425E3U are preferred, as both are active products with RoHS compliance certification. CD2425W4U offers the widest input voltage range (4–32VDC), providing greater design flexibility for lower-voltage control circuits. CD2425E3U maintains the original input voltage range (15–32VDC) and is manufacturer-recommended for direct replacement of the CD2425E4U.

For immediate replacement of obsolete units: CD2425E3U is the manufacturer-recommended substitute, maintaining identical input voltage specifications and ensuring drop-in compatibility without circuit redesign.

For applications requiring extended input voltage tolerance: CC2425W4U and CD2425W4U both support 4–32VDC input range, accommodating lower supply voltages if required by system architecture.

All substitute parts carry RoHS compliance certification, meeting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can CC2425W4U, CD2425W4U, and CD2425E3U be used interchangeably with CD2425E4U?

A: Yes, within the constraints of your control circuit voltage. All three parts share identical load current (25A), load voltage range (24–280VAC), circuit configuration (SPST-NO x 2), output type (AC zero-cross), package type (hockey puck), and termination style (screw terminal). If your control voltage is 15VDC or higher, all three are suitable. If your control voltage is below 15VDC, only CC2425W4U and CD2425W4U are compatible.

Q: What is the difference between CD2425E3U and CD2425W4U?

A: Both are active products with identical electrical ratings for load current and voltage. The primary difference is input voltage range: CD2425E3U supports 15–32VDC (matching the original CD2425E4U), while CD2425W4U supports 4–32VDC. Additionally, CD2425E3U is the manufacturer-recommended substitute for the obsolete CD2425E4U.

Q: Why is the input voltage range different between these parts?

A: The input voltage range variation (15–32VDC versus 4–32VDC) reflects different internal control circuit designs within the Evolution Dual series. This does not affect substitutability for applications operating within the 15–32VDC window. Parts with wider input ranges (4–32VDC) provide additional design flexibility for lower-voltage control applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. CC2425W4U, CD2425W4U, and CD2425E3U are all certified RoHS compliant. The original CD2425E4U (obsolete) does not specify RoHS status in available documentation.

Q: Can these parts be used in the same PCB footprint or mounting location?

A: Yes. All substitute parts use identical hockey puck package geometry and chassis mount configuration, ensuring mechanical compatibility with existing mounting hardware and thermal management solutions.

Q: Which substitute should I choose for a new design?

A: For new designs, CD2425W4U is recommended if your control voltage may vary below 15VDC. If your control voltage is guaranteed to remain between 15–32VDC, CD2425E3U provides the same specifications as the original part with active product status and RoHS compliance.

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