SPF240A25 Equivalent & Substitute Parts

Part Overview

The SPF240A25 is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a 4-SIP package. This component operates with input voltage of 90–140VAC and supports load voltages from 12V to 280V at a maximum load current of 25A, with zero-cross AC output switching. The SPF240A25 is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure continued component availability for new designs, maintenance, and production continuity.

Substiute Parts

SPF240A25

Sensata-CrydomIn Stock: 770SPF240A25 Datasheet

Current PartRFQ

PF240A25

Sensata-CrydomIn Stock: 1043PF240A25 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPF240A25 is based on electrical and mechanical parameter equivalence. The following criteria determine valid substitutes:

• Circuit Configuration: Must be SPST-NO (1 Form A)
• Output Type: Must be AC with zero-cross switching capability
• Input Voltage: Must support 90–140VAC range
• Load Voltage: Must support 12V–280V range
• Load Current: Must be rated for 25A
• Package: Must be 4-SIP with PC Pin termination
• Compliance: Must maintain RoHS compliance

The PF240A25 meets all these criteria and is classified as the manufacturer-recommended substitute for the SPF240A25.

Parameter Comparison

Engineering Selection Recommendations

The PF240A25 is the direct equivalent substitute for the SPF240A25. Both components are manufactured by Sensata-Crydom and share identical electrical specifications and mechanical packaging. The primary distinction is product status: the SPF240A25 is Last Time Buy, while the PF240A25 is Active. For new designs and ongoing production, the PF240A25 is the appropriate selection due to its active status and continued availability. Both parts maintain RoHS compliance and are suitable for applications requiring SPST-NO solid-state relay functionality with 25A load current capacity and zero-cross AC switching.

Frequently Asked Questions (FAQ)

Q: Can the PF240A25 be used as a direct replacement for the SPF240A25?

A: Yes. The PF240A25 is electrically and mechanically equivalent to the SPF240A25. Both components have identical circuit configuration, voltage ratings, current capacity, package type, and termination style. Direct substitution is valid without circuit modification.

Q: What is the difference between the SPF240A25 and PF240A25?

A: The components differ only in series designation (SPF versus PF) and product status. The SPF240A25 is Last Time Buy, indicating end-of-life status. The PF240A25 is Active and represents the current production equivalent. All electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the SPF240A25 and PF240A25 are RoHS compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

Q: What applications are these relays suitable for?

A: These SPST-NO solid-state relays are designed for AC load switching applications requiring 25A capacity with input control voltage of 90–140VAC and load voltage support from 12V to 280V. Zero-cross switching capability minimizes electromagnetic interference and extends load life.

Q: Is the 4-SIP package compatible with standard through-hole PCB layouts?

A: Yes. The 4-SIP package with PC Pin termination is designed for through-hole mounting on standard printed circuit boards. Pin spacing and dimensions are consistent between the SPF240A25 and PF240A25.