CSD2425 Solid State Relay SPST-NO 25A 24-280V Equivalent & Substitute Parts

Part Overview

The CSD2425 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device with a 25A load capacity and 24-280V output voltage range. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible functionality.

Substiute Parts

CSD2425

Sensata-CrydomIn Stock: 853CSD2425 Datasheet

Current PartRFQ

CSW2425

Sensata-CrydomIn Stock: 1189CSW2425 Datasheet

DirectRFQ

84134010

Sensata-CrydomIn Stock: 115684134010 Datasheet

MFR RecommendedRFQ

84137910N

CrouzetIn Stock: 76884137910N Datasheet

MFR RecommendedRFQ

AQN411

Panasonic Electric WorksIn Stock: 827AQN411 Datasheet

MFR RecommendedRFQ

SSR-240D25

TE Connectivity Potter & Brumfield RelaysIn Stock: 7387SSR-240D25 Datasheet

MFR RecommendedRFQ

SSRT-240D25

TE Connectivity Potter & Brumfield RelaysIn Stock: 1216SSRT-240D25 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSD2425 is determined by the following critical parameters: circuit configuration (SPST-NO), output type (AC with zero cross), load current rating (25A), load voltage range (24-280V minimum), mounting type (chassis mount), termination style (screw terminal), and package form factor (hockey puck). All substitute parts listed maintain these core electrical and mechanical specifications. Input voltage ranges may vary within acceptable design margins, and product status or compliance certifications do not affect functional substitutability but inform procurement decisions.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the CSD2425, the following active-status alternatives are recommended: SSR-240D25 and SSRT-240D25 from TE Connectivity Potter & Brumfield Relays, and 84134010 from Sensata-Crydom. These parts maintain full electrical and mechanical compatibility while offering active product status and current manufacturing support.

The 84137910N (Crouzet) and AQN411 (Panasonic Electric Works) are functionally equivalent alternatives with active status. The AQN411 operates within a reduced load voltage range of 75-250V and should be selected only when the application load voltage does not require the full 24-280V capability.

The CSW2425 (Sensata-Crydom) remains available with last-time-buy status and represents a direct manufacturer alternative within the same product family.

Frequently Asked Questions (FAQ)

Q: Can the CSW2425 directly replace the CSD2425? A: Yes. Both parts share identical circuit configuration (SPST-NO), output type (AC zero cross), load current (25A), load voltage range (24-280V), mounting type (chassis mount), termination style (screw terminal), and package form factor (hockey puck). The CSW2425 accepts a wider input voltage range (3-32VDC vs. 4.6-15VDC).

Q: What is the difference between SSR-240D25 and SSRT-240D25? A: Both parts are manufactured by TE Connectivity Potter & Brumfield Relays and share identical electrical specifications and load ratings. They differ in series designation (SSR vs. SSRT) and base product number. Both are functionally equivalent to the CSD2425.

Q: Is the AQN411 a suitable replacement for all applications? A: The AQN411 is functionally equivalent for applications where the load voltage range is 75-250V. Applications requiring operation below 75V or above 250V must use alternative parts that support the full 24-280V range: CSW2425, 84134010, 84137910N, SSR-240D25, or SSRT-240D25.

Q: Why is the CSD2425 listed as obsolete? A: Obsolete status indicates the part is no longer manufactured. Active alternatives with identical functional specifications are available from multiple manufacturers.

Q: Are there compliance differences between substitute parts? A: Yes. RoHS and REACH compliance status varies by manufacturer and part number. SSR-240D25 and SSRT-240D25 are ROHS3 compliant and REACH affected. 84137910N is RoHS compliant and REACH unaffected. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: Can I use these parts interchangeably in existing designs? A: Yes, provided the application load voltage and input voltage requirements fall within the specified ranges of the substitute part. All listed parts maintain identical mounting, termination, and package specifications for direct mechanical interchange.