SMR4825-6 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The SMR4825-6 is a solid state relay (SSR) manufactured by Sensata Technologies, designed for AC load switching applications. This hockey puck-style relay operates with input voltage ranging from 8 to 32 VDC and supports load voltages between 96 and 530 V at a maximum current of 25 A. The device features zero-cross switching for AC output control and is mounted via chassis mount with screw terminal connections. The part is currently active in production status and RoHS compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

SMR4825-6

Sensata TechnologiesIn Stock: 718SMR4825-6 Datasheet

Current PartRFQ

84139150N

CrouzetIn Stock: 75484139150N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMR4825-6 are identified based on the following critical parameters that determine functional equivalence:

• Package / Case: Hockey Puck form factor for mechanical compatibility
• Mounting Type: Chassis Mount configuration
• Termination Style: Screw Terminal connections
• Output Type: AC with Zero Cross switching capability
• Input Voltage Range: Compatibility within or overlapping 8 ~ 32 VDC specification
• Load Voltage Range: Capability to handle loads within or exceeding 96 ~ 530 V range
• Load Current: Rated current at or above 25 A
• RoHS Compliance: Compliance status for regulatory alignment

The substitute part 84139150N from Crouzet meets these criteria with compatible electrical ratings and mechanical form factor, though with different current and voltage specifications within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the SMR4825-6 and 84139150N are active production parts with RoHS compliance. Selection between these parts depends on application-specific load voltage and current requirements:

• SMR4825-6 is suitable for applications requiring load voltages up to 530 V with 25 A switching capacity and input voltage tolerance to 32 VDC.
• 84139150N is suitable for applications with load voltages up to 265 V and higher current capacity at 35 A, with input voltage tolerance to 30 VDC.

Both parts share identical mechanical form factor (hockey puck), mounting configuration (chassis mount), and termination method (screw terminal), ensuring physical interchangeability. The choice between these parts must be based on the specific load voltage and current requirements of the target application, as the voltage and current ratings are not fully overlapping.

Frequently Asked Questions (FAQ)

Q: Can the 84139150N replace the SMR4825-6 in all applications?

A: Physical replacement is possible due to identical package, mounting, and termination specifications. However, electrical compatibility depends on application load voltage. The 84139150N supports load voltages only up to 265 V, while the SMR4825-6 supports up to 530 V. Applications requiring voltages above 265 V cannot use the 84139150N as a substitute.

Q: What is the significance of the hockey puck package?

A: The hockey puck package is a standardized form factor for solid state relays designed for chassis mounting with screw terminal connections. This package ensures mechanical compatibility between substitute parts from different manufacturers when other specifications align.

Q: Are both parts RoHS compliant?

A: Yes, both the SMR4825-6 and 84139150N are RoHS compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What does zero-cross switching mean?

A: Zero-cross switching is an AC output control feature that synchronizes relay switching with the zero-voltage point of the AC waveform, reducing electromagnetic interference and extending load life.

Q: How do input voltage ranges affect substitution?

A: The SMR4825-6 accepts input voltage from 8 to 32 VDC, while the 84139150N accepts 8 to 30 VDC. Applications using input voltages between 30 and 32 VDC cannot use the 84139150N as a substitute.