CD2450D4U Equivalent & Substitute Parts

Part Overview

The CD2450D4U 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 50A load current with input voltage range of 4–15VDC and output voltage range of 24–280VAC, featuring zero-cross switching for AC loads. The CD2450D4U is currently listed as obsolete, necessitating identification of active equivalent models to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

CD2450D4U

Sensata-CrydomIn Stock: 1168CD2450D4U Datasheet

Current PartRFQ

CD2450W4U

Sensata-CrydomIn Stock: 1224CD2450W4U Datasheet

DirectRFQ

CC2450D4U

Sensata-CrydomIn Stock: 1039CC2450D4U Datasheet

MFR RecommendedRFQ

CD2450D1U

Sensata-CrydomIn Stock: 753CD2450D1U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD2450D4U is determined by strict electrical and mechanical parameter matching within the Sensata-Crydom Evolution Dual series. The critical parameters governing substitution are:

• Circuit configuration: SPST-NO (1 Form A) x 2
• Output type: AC with zero-cross switching
• Load current rating: 50A
• Load voltage range: 24–280VAC
• Package type: Hockey puck form factor
• Mounting: Chassis mount with screw terminals

Substitute parts must maintain these core specifications. Variations in input voltage range (4–15VDC versus 4–32VDC) and product status (active versus obsolete) do not preclude substitution when all electrical load parameters and mechanical interfaces remain identical.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (CD2450W4U, CC2450D4U, and CD2450D1U) are functionally equivalent to the CD2450D4U for applications requiring 50A SPST-NO dual-channel solid-state relay operation at 24–280VAC output with zero-cross switching.

CD2450W4U is the direct functional equivalent with extended input voltage range (4–32VDC versus 4–15VDC). This part is active and RoHS compliant, making it suitable for new designs and production environments requiring regulatory compliance.

CC2450D4U and CD2450D1U are manufacturer-recommended alternatives, both active and RoHS compliant. These parts maintain the original input voltage specification (4–15VDC) and are appropriate for designs with fixed control voltage requirements.

Selection among these three substitutes should be based on control circuit voltage availability and compliance requirements specific to the application. All three parts share identical load-side electrical ratings and mechanical interfaces.

Frequently Asked Questions (FAQ)

Q: Can CD2450W4U replace CD2450D4U in existing designs?

A: Yes. CD2450W4U maintains all critical load-side parameters: 50A capacity, 24–280VAC output range, SPST-NO dual configuration, zero-cross switching, and hockey puck package with screw terminals. The extended input voltage range (4–32VDC) provides broader control circuit compatibility without affecting load switching performance.

Q: What is the difference between CD2450W4U and CC2450D4U?

A: Both are active, RoHS-compliant alternatives with identical load ratings and input voltage range (4–15VDC). The primary difference is the base product number designation (CD2450 versus CC2450), which reflects internal Sensata-Crydom product line classification. Electrical and mechanical specifications are equivalent.

Q: Are all substitutes mechanically interchangeable?

A: Yes. All substitute parts use the hockey puck package form factor with chassis mount configuration and screw terminal termination, ensuring direct mechanical compatibility in existing mounting and wiring configurations.

Q: Why is CD2450D4U listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. Active equivalents (CD2450W4U, CC2450D4U, CD2450D1U) provide identical functionality and are recommended for new production and field replacement applications.

Q: Do all substitutes meet RoHS compliance?

A: CD2450W4U, CC2450D4U, and CD2450D1U are all RoHS compliant. The original CD2450D4U RoHS status is not specified in available documentation.