CD4850D1U Equivalent & Substitute Parts

Part Overview

The CD4850D1U is a solid-state relay (SSR) manufactured by Sensata Technologies, configured as a SPST-NO (Single Pole Single Throw - Normally Open) dual-channel device rated for 50A load current at 48-660V AC output. This component features a hockey puck package with screw terminal connections and is designed for chassis mount applications with zero-cross switching capability.

The CD4850D1U is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and production requirements for applications utilizing this relay configuration.

Substiute Parts

CD4850D1U

Sensata TechnologiesIn Stock: 705CD4850D1U Datasheet

Current PartRFQ

CD4850W2U

Sensata-CrydomIn Stock: 786CD4850W2U Datasheet

MFR RecommendedRFQ

84140603N

CrouzetIn Stock: 92284140603N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4850D1U are qualified based on the following critical parameters that determine functional equivalence:

Core Electrical Parameters (Must Match):

• Circuit configuration: SPST-NO (1 Form A) x 2
• Load current rating: 50 A
• Load voltage range: 48 V ~ 660 V AC
• Output type: AC, Zero Cross

Compatible Input Voltage Range: The CD4850D1U operates at 4 ~ 15 VDC input. Substitute parts with input voltage ranges of 4 ~ 32 VDC are compatible, as this range encompasses the original specification.

Mechanical Compatibility:

• Package type: Hockey Puck or Module (both support screw terminal connections)
• Mounting: Chassis Mount or Panel Mount (both accommodate chassis mount applications)
• Termination: Screw Terminal (consistent across all candidates)

Compliance & Status: Substitute parts must maintain REACH Unaffected and EAR99 ECCN classifications. Active product status is preferred for long-term availability.

Parameter Comparison

Engineering Selection Recommendations

CD4850W2U (Sensata-Crydom): This part is the manufacturer-recommended substitute from Sensata-Crydom, the Crydom division of Sensata Technologies. It maintains identical electrical specifications and hockey puck packaging. The expanded input voltage range (4 ~ 32 VDC) provides additional design flexibility. Active product status ensures ongoing availability and supply chain support. ROHS3 compliance meets current regulatory requirements.

84140603N (Crouzet): This Crouzet GN2 series relay provides functional equivalence with identical electrical ratings and screw terminal connections. The module package format is mechanically compatible with hockey puck applications in chassis mount configurations. Active product status and ROHS3 compliance support long-term deployment. The MSL rating of 1 (Unlimited) indicates robust moisture handling characteristics suitable for industrial environments.

Both substitutes are qualified for direct replacement based on electrical performance, mechanical compatibility, and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can CD4850W2U directly replace CD4850D1U in existing applications? A: Yes. Both parts share identical circuit configuration (SPST-NO x 2), load current (50A), load voltage range (48-660V AC), and output type (AC, Zero Cross). The expanded input voltage range of CD4850W2U (4 ~ 32 VDC vs. 4 ~ 15 VDC) is backward compatible. Hockey puck packaging and screw terminal connections are identical.

Q: What is the difference between the hockey puck and module packages? A: Both package types support screw terminal connections and chassis mount applications. The hockey puck (CD4850W2U) maintains the original form factor. The module package (84140603N) offers additional mounting flexibility with panel mount capability. Electrical performance is equivalent.

Q: Are there input voltage considerations when substituting? A: The CD4850D1U operates at 4 ~ 15 VDC input. Both substitutes accept 4 ~ 32 VDC input. If your application uses input voltages above 15 VDC, only the substitute parts will function. If your application uses 4 ~ 15 VDC, both substitutes are fully compatible.

Q: Do the substitute parts meet current regulatory requirements? A: Yes. Both CD4850W2U and 84140603N are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards. The CD4850D1U, being obsolete, may not meet updated compliance requirements for new designs.

Q: Which substitute should I select for new designs? A: CD4850W2U is the manufacturer-recommended substitute from Sensata-Crydom and maintains the original hockey puck form factor. For applications requiring panel mount flexibility, 84140603N provides equivalent electrical performance with additional mechanical options.