CWD4850S Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CWD4850S is a solid state relay (SSR) manufactured by Sensata-Crydom, designed for single-pole single-throw normally open (SPST-NO) switching applications. This component operates as a 1 Form A relay with AC output capability and zero-cross switching functionality. The CWD4850S is classified as obsolete, which necessitates identification of active equivalent components to maintain supply chain continuity for applications requiring this relay's electrical and mechanical specifications.

Substiute Parts

CWD4850S

Sensata-CrydomIn Stock: 848CWD4850S Datasheet

Current PartRFQ

CWD4850P

Sensata-CrydomIn Stock: 20211CWD4850P Datasheet

MFR RecommendedRFQ

CWD4850P

Sensata-CrydomIn Stock: 20211CWD4850P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CWD4850S is based on electrical and mechanical parameter equivalence within the CW48 series. The following parameters define acceptable substitutes:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC with zero-cross switching
• Input voltage range: 4 ~ 32 VDC
• Load voltage range: 48 V ~ 660 V
• Load current rating: 50 A
• Mounting type: Chassis Mount
• Termination style: Screw Terminal
• Package type: Hockey Puck

The CWD4850P meets all these criteria and is classified as an active product within the same manufacturer series, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The CWD4850P is the direct substitute for the obsolete CWD4850S. Both components share identical electrical ratings and mechanical specifications within the CW48 series. The CWD4850P is currently in active production status, ensuring supply chain availability.

The CWD4850P carries ROHS3 compliance certification, whereas the CWD4850S compliance status was not specified. For applications subject to RoHS regulatory requirements, the CWD4850P provides documented compliance. The REACH status differs between the two parts; this distinction should be evaluated against specific application and regional regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can CWD4850P directly replace CWD4850S in existing designs?

A: Yes. Both components are identical in circuit configuration, voltage ratings, current capacity, mounting type, termination style, and package form factor. No design modifications are required for substitution.

Q: What is the difference between the CWD4850S and CWD4850P?

A: The primary differences are product status and compliance certifications. The CWD4850S is obsolete, while the CWD4850P is active. The CWD4850P includes ROHS3 compliance documentation. Both parts are electrically and mechanically equivalent.

Q: Are there packaging differences between these parts?

A: The CWD4850S is supplied in standard packaging, while the CWD4850P is supplied in bulk packaging. Both use the Hockey Puck case form factor. Packaging differences do not affect electrical or mechanical compatibility.

Q: What does "zero-cross" switching mean for this relay?

A: Zero-cross switching ensures the relay switches at the zero-voltage point of the AC waveform, reducing electromagnetic interference and extending component life in AC load applications.

Q: Is the screw terminal connection identical between both parts?

A: Yes. Both the CWD4850S and CWD4850P use screw terminal termination with identical specifications, allowing direct connection without modification.