H10D4890 Solid State Relay SPST-NO 90A Equivalent & Substitute Parts

Part Overview

The H10D4890 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device rated for 90A load current with input voltage range of 4–32VDC and output voltage range of 48–530V AC. The device features zero-cross switching capability and is housed in a hockey puck package with screw terminal connections for chassis mount applications.

The H10D4890 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and replacement requirements for existing installations.

Substiute Parts

H10D4890

Sensata-CrydomIn Stock: 1084H10D4890 Datasheet

Current PartRFQ

H12WD4890

Sensata-CrydomIn Stock: 910H12WD4890 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the H10D4890 is determined by the following critical electrical and mechanical parameters:

• Circuit Configuration: Must remain SPST-NO (1 Form A) to maintain identical switching topology
• Load Current Rating: Must support minimum 90A continuous current
• Input Voltage Range: Must accommodate 4–32VDC control signal
• Output Voltage Range: Must support at least 48V minimum; higher maximum ratings are acceptable if the minimum threshold is met
• Output Type: Must be AC with zero-cross switching for compatible system integration
• Package / Case: Must be hockey puck form factor for mechanical fit
• Termination Style: Must use screw terminals for connection compatibility
• Mounting Type: Must support chassis mount configuration

The H12WD4890 meets all substitution criteria and is classified as an active product with enhanced output voltage capability (48–660V), providing extended operational range while maintaining full backward compatibility with the H10D4890 in applications operating within the original 48–530V specification.

Parameter Comparison

Engineering Selection Recommendations

The H12WD4890 is the direct substitute for the obsolete H10D4890. Selection is based on the following engineering criteria:

Product Status: The H10D4890 is obsolete and no longer manufactured. The H12WD4890 is an active product with current manufacturing support, ensuring long-term availability and supply chain reliability.

Electrical Compatibility: The H12WD4890 maintains identical input voltage (4–32VDC), load current (90A), circuit configuration (SPST-NO), and output switching characteristics (AC, zero-cross). The extended output voltage range (48–660V versus 48–530V) provides additional operational margin without compromising compatibility in existing applications.

Mechanical Compatibility: Both devices share identical package form factor (hockey puck), mounting type (chassis mount), and termination style (screw terminal), enabling direct physical replacement without mechanical redesign.

Compliance Status: The H12WD4890 is ROHS3 compliant and subject to REACH regulations, meeting current environmental and regulatory requirements for new component procurement and system updates.

For applications currently operating the H10D4890 within the 48–530V output range, the H12WD4890 provides a fully compatible replacement with no circuit modifications required.

Frequently Asked Questions (FAQ)

Q: Can the H12WD4890 directly replace the H10D4890 in existing installations?

A: Yes. The H12WD4890 is electrically and mechanically compatible with the H10D4890. Both devices share identical input voltage range (4–32VDC), load current rating (90A), circuit configuration (SPST-NO), output switching type (AC, zero-cross), package form factor (hockey puck), and termination style (screw terminal). No circuit modifications are required.

Q: What is the difference in output voltage rating between these two parts?

A: The H10D4890 is rated for 48–530V output, while the H12WD4890 is rated for 48–660V output. The H12WD4890 provides an extended maximum voltage capability. Both devices operate identically within the original 48–530V specification range.

Q: Why is the H10D4890 listed as obsolete?

A: The H10D4890 has been discontinued by the manufacturer. The H12WD4890 is the active replacement product, ensuring continued availability and manufacturing support for new orders and system replacements.

Q: Are there any compliance differences between the H10D4890 and H12WD4890?

A: Yes. The H12WD4890 is ROHS3 compliant and subject to REACH regulations, meeting current environmental standards. The H10D4890 is listed as REACH Unaffected. For new system designs and procurement, the H12WD4890 is the recommended choice to ensure compliance with current regulatory requirements.

Q: Can the H12WD4890 be used in applications requiring the full 660V output capability?

A: Yes. The H12WD4890 is rated for continuous operation at output voltages up to 660V AC. Applications requiring output voltages above 530V benefit from the extended rating of the H12WD4890.

Q: Are the screw terminal connections identical between both parts?

A: Yes. Both the H10D4890 and H12WD4890 use screw terminal connections with identical pin configuration and mechanical interface, enabling direct terminal reconnection during replacement.