Sensata Technologies 4D1225 SSR Relay - Equivalent & Substitute Parts

Part Overview

The Sensata Technologies 4D1225 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current at 24V to 140V AC output. The device features zero-cross switching capability and is housed in a hockey puck package with screw terminal connections. The 4D1225 is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and component procurement.

Substiute Parts

4D1225

Sensata TechnologiesIn Stock: 8854D1225 Datasheet

Current PartRFQ

D1225

Sensata-CrydomIn Stock: 2395D1225 Datasheet

DirectRFQ

D1225

Sensata-CrydomIn Stock: 2395D1225 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 4D1225 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC with zero-cross switching
• Input voltage range: 3 ~ 32VDC
• Load voltage range: 24 V ~ 140 V
• Load current rating: 25 A
• Mounting type: Chassis Mount
• Termination: Screw Terminal
• Package: Hockey Puck

The D1225 from Sensata-Crydom meets all specified electrical and mechanical parameters, establishing direct functional equivalence. The D1225 maintains identical circuit topology, voltage ratings, current capacity, and physical form factor as the obsolete 4D1225.

Parameter Comparison

Engineering Selection Recommendations

The D1225 (Sensata-Crydom) is the direct functional equivalent for the obsolete 4D1225. Selection of the D1225 is supported by:

• Identical electrical specifications across input voltage, load voltage, and current ratings
• Matching circuit configuration and zero-cross output switching behavior
• Identical mechanical form factor and termination method
• Active product status with current manufacturing support
• RoHS3 compliance certification
• REACH compliance status

The D1225 is suitable for direct replacement in applications currently using the 4D1225, with no circuit redesign or mechanical modification required.

Frequently Asked Questions (FAQ)

Q: Can the D1225 directly replace the 4D1225 in existing applications?

A: Yes. The D1225 meets all electrical and mechanical specifications of the 4D1225, including input voltage range (3 ~ 32VDC), load voltage range (24 V ~ 140 V), current rating (25A), circuit configuration (SPST-NO), output type (AC, zero-cross), mounting type (chassis mount), termination style (screw terminal), and package form (hockey puck).

Q: What is the primary reason for seeking a substitute for the 4D1225?

A: The 4D1225 is classified as obsolete. The D1225 is an active product from Sensata-Crydom, ensuring ongoing availability and manufacturing support.

Q: Are there any compliance differences between the 4D1225 and D1225?

A: The D1225 carries RoHS3 compliance certification and REACH compliance status. The 4D1225 specifications do not include these certifications in the provided data.

Q: Does the hockey puck package ensure mechanical compatibility?

A: Yes. Both the 4D1225 and D1225 use the hockey puck package with chassis mount configuration and screw terminal termination, ensuring identical mechanical fit and installation method.

Q: Are there inventory considerations for the D1225?

A: The D1225 is available with 2300 pieces in stock as new original inventory, providing adequate supply for procurement needs.