TD2425F Solid State Relay - Equivalent & Substitute Parts

Part Overview

The TD2425F is a Solid State Relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current at 24V to 280V AC output. This module-type relay features zero-cross switching capability and accepts 3V to 32VDC input control signals. The TD2425F is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where this component is specified.

Substiute Parts

TD2425F

Sensata-CrydomIn Stock: 1196TD2425F Datasheet

Current PartRFQ

D2425F

Sensata-CrydomIn Stock: 1091D2425F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TD2425F is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A) topology
• Load current rating: 25A minimum
• Load voltage range: 24V to 280V AC
• Input control voltage: 3V to 32VDC
• Output switching type: AC with zero-cross detection
• Mounting classification: Chassis Mount
• RoHS compliance status

The D2425F qualifies as a direct substitute based on identical electrical specifications across all load and control parameters. Differences in package form factor (Hockey Puck versus Module) and termination interface (Quick Connect versus Screw Terminal) represent mechanical variations that do not affect electrical substitutability when proper mechanical integration is ensured.

Parameter Comparison

Engineering Selection Recommendations

The D2425F represents a direct electrical equivalent to the TD2425F with full compatibility across all load and control specifications. The primary distinction lies in product status: the D2425F maintains active manufacturing status while the TD2425F is obsolete, making the D2425F the appropriate selection for new designs and ongoing procurement.

Mechanical integration differences—specifically the transition from screw terminal to quick-connect termination and the shift from module to hockey puck form factor—require mechanical redesign or adapter implementation in existing installations. These mechanical variations do not compromise electrical performance or safety ratings.

Both parts maintain identical RoHS compliance certification and operate within the same electrical parameter envelope, ensuring functional interchangeability in applications where mechanical constraints permit the form factor change.

Frequently Asked Questions (FAQ)

Q: Can the D2425F directly replace the TD2425F in existing installations?

A: Electrical substitution is complete. Mechanical integration requires assessment of mounting space, termination interface compatibility, and connector type. The quick-connect termination of the D2425F differs from the screw terminal design of the TD2425F.

Q: Are the load current and voltage ratings identical between these parts?

A: Yes. Both parts are rated for 25A load current across the 24V to 280V AC range with identical zero-cross switching behavior and 3V to 32VDC input control voltage acceptance.

Q: What is the significance of the product status difference?

A: The TD2425F is obsolete, indicating discontinued manufacturing. The D2425F is active production, ensuring long-term availability and supply chain reliability for new designs and future procurement cycles.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TD2425F and D2425F are RoHS compliant and carry identical ECCN and HTSUS classifications.

Q: What mechanical considerations apply when substituting the D2425F for the TD2425F?

A: The D2425F uses a hockey puck form factor with quick-connect terminals (0.187"/0.250" spade connectors) versus the module form factor with screw terminals on the TD2425F. Mechanical mounting and electrical connection methods must be adapted accordingly.