H12CD4850 Equivalent & Substitute Parts

Part Overview

The H12CD4850 is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device with a 50A load capacity and 48-660V operating range. This component features a hockey puck form factor with screw terminal connections and zero-cross AC output switching. The H12CD4850 is classified as obsolete, necessitating identification of equivalent substitute components for new designs and ongoing system maintenance.

Substiute Parts

H12CD4850

Sensata-CrydomIn Stock: 1017H12CD4850 Datasheet

Current PartRFQ

H12WD4850

Sensata-CrydomIn Stock: 969H12WD4850 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the H12CD4850 is based on electrical and mechanical parameter equivalence within the Sensata-Crydom H12 series solid-state relay family. The critical parameters determining substitution eligibility are:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC with zero-cross switching
• Load voltage range: 48 V ~ 660 V
• Load current rating: 50 A
• Package form factor: Hockey puck
• Termination method: Screw terminal
• Mounting configuration: Chassis mount

The H12WD4850 qualifies as a direct substitute based on matching these core electrical and mechanical specifications. While the input voltage range differs (4 ~ 32VDC versus 4 ~ 15VDC), this represents an expanded operational envelope that maintains full compatibility with the original part's input voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

The H12WD4850 is the direct substitute for the obsolete H12CD4850. Selection of the H12WD4850 is supported by the following factors:

• Active product status ensures ongoing availability and manufacturer support
• ROHS3 compliance satisfies current regulatory requirements for electronic components
• Expanded input voltage range (4 ~ 32VDC) provides operational flexibility beyond the original specification
• Identical electrical load specifications (50A, 48-660V) and circuit configuration ensure functional equivalence
• Matching mechanical form factor and termination style enable direct installation compatibility

Frequently Asked Questions (FAQ)

Q: Can the H12WD4850 directly replace the H12CD4850 in existing applications?

A: Yes. The H12WD4850 maintains identical load voltage, load current, circuit configuration, and package form factor specifications. The expanded input voltage range of the H12WD4850 (4 ~ 32VDC) encompasses the original part's input range (4 ~ 15VDC), ensuring full compatibility.

Q: What is the primary reason for substitution?

A: The H12CD4850 is classified as obsolete. The H12WD4850 is an active product from the same manufacturer and series, providing continued availability and support.

Q: Are there differences in regulatory compliance between these parts?

A: The H12WD4850 carries ROHS3 compliance certification, whereas the H12CD4850 does not specify RoHS status. The H12WD4850 is REACH Affected, while the H12CD4850 is REACH Unaffected. These differences reflect current regulatory standards applicable to active products.

Q: Do the hockey puck package dimensions remain identical?

A: Both parts use the hockey puck form factor with screw terminal connections and chassis mount configuration, ensuring mechanical interchangeability in existing installations.

Q: Is the zero-cross AC switching function preserved in the substitute?

A: Yes. Both the H12CD4850 and H12WD4850 feature AC output type with zero-cross switching capability.