H12CD4890 Equivalent & Substitute Parts

Part Overview

The H12CD4890 is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a hockey puck package. It is rated for 90A load current with input voltage range of 4–15VDC and output voltage range of 48–660V AC with zero-cross switching capability. The H12CD4890 is classified as obsolete, making identification of suitable substitute components necessary for ongoing system support and procurement.

Substiute Parts

H12CD4890

Sensata-CrydomIn Stock: 1025H12CD4890 Datasheet

Current PartRFQ

H12WD4890

Sensata-CrydomIn Stock: 910H12WD4890 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the H12CD4890 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC with zero-cross switching
• Load current rating: 90 A
• Load voltage range: 48–660V
• Package type: Hockey Puck
• Mounting type: Chassis Mount
• Termination style: Screw Terminal

The H12WD4890 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary difference is an expanded input voltage range (4–32VDC versus 4–15VDC on the original), which provides greater operational flexibility while maintaining full compatibility with existing circuit designs rated for the original 4–15VDC input specification.

Parameter Comparison

Engineering Selection Recommendations

The H12WD4890 is the direct substitute for the H12CD4890. Both devices share identical electrical ratings and mechanical form factors, ensuring pin-for-pin and functional compatibility in existing applications.

The H12WD4890 offers the advantage of active product status, ensuring continued availability and manufacturer support. It also provides ROHS3 compliance, meeting current environmental and regulatory requirements for new designs and procurement cycles.

The expanded input voltage range of the H12WD4890 (4–32VDC) does not create incompatibility with systems designed for the original 4–15VDC specification; it represents an enhancement that accommodates a broader range of control signal sources without affecting performance in the original operating window.

Frequently Asked Questions (FAQ)

Q: Can the H12WD4890 be used as a direct replacement for the H12CD4890?

A: Yes. Both devices are SPST-NO solid-state relays with identical load current (90A), load voltage range (48–660V), package type (hockey puck), and termination style (screw terminal). Electrical and mechanical compatibility is complete.

Q: What is the difference between the input voltage ranges?

A: The H12CD4890 accepts 4–15VDC input, while the H12WD4890 accepts 4–32VDC input. The H12WD4890's wider range is a superset of the original specification and does not affect operation in systems designed for the narrower range.

Q: Why is the H12CD4890 listed as obsolete?

A: The H12CD4890 has been discontinued by the manufacturer. The H12WD4890 is the active replacement, ensuring long-term availability and support.

Q: Are there compliance differences between the two parts?

A: The H12WD4890 is ROHS3 compliant and REACH affected, while the H12CD4890 is REACH unaffected. For new designs and procurement, the H12WD4890 meets current environmental standards.

Q: Is the hockey puck package identical between both parts?

A: Yes. Both devices use the same hockey puck package with chassis mount configuration and screw terminal termination, ensuring mechanical interchangeability.