HD4850PGHT Equivalent & Substitute Parts

Part Overview

The HD4850PGHT is a solid state relay (SSR) manufactured by Sensata-Crydom, classified as SPST-NO (1 Form A) with hockey puck form factor. This component is designed for AC load switching applications with zero-cross detection capability. The part is currently active in production status with 1004 units in stock inventory. Equivalent and substitute parts are identified when they meet the critical electrical and mechanical parameters required for direct replacement in chassis-mounted applications.

Substiute Parts

HD4850PGHT

Sensata-CrydomIn Stock: 1066HD4850PGHT Datasheet

Current PartRFQ

84138120N

CrouzetIn Stock: 95584138120N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HD4850PGHT is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching logic
• Output Type: Must support AC with zero-cross detection for compatible control behavior
• Input Voltage Range: Must accommodate 4 – 32 VDC control signal
• Load Current Rating: Must be rated for 50 A continuous operation
• Package / Case: Must be hockey puck form factor for mechanical fit
• Mounting Type: Must support chassis mount installation
• Termination Style: Must use screw terminal connections
• Environmental Compliance: Must maintain RoHS compliance status

The substitute part 84138120N from Crouzet meets these core substitution criteria with the exception of load voltage range variance (24 V – 500 V versus 48 V – 530 V). This variance represents a narrower minimum voltage specification and reduced maximum voltage capability, which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the HD4850PGHT and 84138120N are active production components with RoHS compliance certification. Selection between these parts is determined by load voltage application requirements:

• HD4850PGHT: Suitable for applications requiring load voltage operation from 48 V to 530 V
• 84138120N: Suitable for applications requiring load voltage operation from 24 V to 500 V

The 84138120N provides extended lower voltage capability (24 V minimum versus 48 V minimum) but operates at a reduced maximum voltage ceiling (500 V versus 530 V). Both components maintain identical input control voltage range, load current capacity, circuit configuration, and physical form factor.

Frequently Asked Questions (FAQ)

Q: Can the 84138120N replace the HD4850PGHT in all applications?

A: Substitution is valid only when the application load voltage operates within the 24 V – 500 V range. Applications requiring operation above 500 V or below 48 V require evaluation of the specific voltage requirements against each part's rated range.

Q: Are the physical dimensions and mounting interfaces identical?

A: Both parts use hockey puck form factor with chassis mount configuration and screw terminal termination. Physical compatibility is maintained for direct mechanical replacement.

Q: Do both parts support the same control input voltage?

A: Yes. Both the HD4850PGHT and 84138120N accept 4 – 32 VDC control input, ensuring identical control signal compatibility.

Q: What is the significance of zero-cross detection in these relays?

A: Zero-cross detection ensures the relay switches AC loads at the zero voltage crossing point, reducing electromagnetic interference and extending load component life. Both parts incorporate this feature.

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

A: Both parts are RoHS compliant with MSL rating of 1 (Unlimited). The 84138120N carries additional REACH Unaffected certification. Both meet equivalent environmental standards for industrial applications.

Q: What is the load current capacity for both parts?

A: Both the HD4850PGHT and 84138120N are rated for 50 A continuous load current operation.