Sensata-Crydom 84140501 SSR Relay SPST-NO 25A 48-660V Equivalent & Substitute Parts

Part Overview

The Sensata-Crydom 84140501 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current and 48-660V AC output voltage. This active product is designed for chassis mount applications with quick connect termination. The part is RoHS compliant and carries unlimited moisture sensitivity rating (MSL 1). Finding equivalent or substitute parts may be necessary due to inventory constraints, application-specific requirements, or packaging preferences.

Substiute Parts

84140501

Sensata-CrydomIn Stock: 120884140501 Datasheet

Current PartRFQ

84140631N

CrouzetIn Stock: 71584140631N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Crouzet 84140631N is identified as a manufacturer-recommended substitute for the Sensata-Crydom 84140501. Substitution eligibility is determined by the following key parameters:

• Circuit configuration: Both parts feature SPST-NO (1 Form A) x 2 topology
• Output type: Both are AC-rated solid-state relays
• Load current capability: The substitute (50A) exceeds the main part (25A), providing upward compatibility
• Load voltage range: The substitute operates within 24-510V, which overlaps the main part's 48-660V range
• Input voltage range: The substitute accepts 4-32VDC, which encompasses the main part's 4-15VDC requirement
• RoHS compliance: Both parts meet regulatory requirements (RoHS Compliant / ROHS3 Compliant)
• Moisture sensitivity: Both carry MSL 1 (Unlimited)

The primary differences are packaging format (Hockey Puck vs. Module) and termination style (Quick Connect vs. Screw Terminal), which are mechanical considerations rather than electrical substitution barriers.

Parameter Comparison

Engineering Selection Recommendations

Both the Sensata-Crydom 84140501 and Crouzet 84140631N are active products with current regulatory compliance. The 84140631N provides higher load current capacity (50A vs. 25A) and broader input voltage acceptance (4-32VDC vs. 4-15VDC), making it suitable for applications requiring additional current margin. The load voltage range of the substitute (24-510V) covers the lower portion of the main part's range (48-660V); applications requiring operation above 510V load voltage must retain the original 84140501. Both parts maintain unlimited moisture sensitivity and meet RoHS requirements. Selection between these parts depends on mechanical integration constraints (package format and termination method) and specific load voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84140631N replace the Sensata-Crydom 84140501 in all applications?

A: Electrical substitution is valid for applications where load voltage does not exceed 510V. The substitute's higher current rating (50A) is compatible with circuits designed for 25A. Mechanical integration must be verified due to differences in package format (Module vs. Hockey Puck) and termination style (Screw Terminal vs. Quick Connect).

Q: What is the significance of the load voltage range difference?

A: The main part (84140501) operates up to 660V, while the substitute (84140631N) operates up to 510V. Applications requiring load voltages between 510V and 660V must use the original part number.

Q: Are both parts RoHS compliant?

A: Yes. The 84140501 is RoHS Compliant, and the 84140631N is ROHS3 Compliant. Both meet current regulatory requirements.

Q: What are the termination differences, and do they affect substitution?

A: The 84140501 uses Quick Connect - 0.250" (6.3mm) termination, while the 84140631N uses Screw Terminal. These are mechanical interface differences that require circuit board or connector redesign for substitution. Electrical function is not affected.

Q: Does the higher current rating of the substitute create any compatibility issues?

A: No. The 50A rating of the 84140631N is upward compatible with circuits designed for 25A operation. The part will function correctly at lower current levels.

Q: What is the input voltage compatibility between these parts?

A: The 84140501 accepts 4-15VDC input, while the 84140631N accepts 4-32VDC input. The substitute's broader input range is compatible with the main part's control voltage requirements.