Sensata-Crydom D1D40L Solid State Relay - Equivalent & Substitute Parts

Part Overview

The Sensata-Crydom D1D40L is a solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 40A DC load switching at 0-100V output voltage range. This component operates with 4.6-32VDC input control voltage and features a hockey puck form factor with screw terminal connections. The D1D40L carries Last Time Buy status, making identification of equivalent and substitute parts essential for ongoing procurement and system maintenance.

Substiute Parts

D1D40L

Sensata-CrydomIn Stock: 1148D1D40L Datasheet

Current PartRFQ

D1D40

Sensata-CrydomIn Stock: 1146D1D40 Datasheet

DirectRFQ

84137870N

CrouzetIn Stock: 80984137870N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the D1D40L is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO (1 Form A)
• Output type must be DC
• Load current rating must be 40 A minimum
• Package form factor must be Hockey Puck
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Input voltage range must accommodate 4.6-32VDC control signals
• Load voltage range must support the application requirements
• On-state resistance must not exceed 50 mOhms

Two substitute parts meet these criteria: the Sensata-Crydom D1D40 (direct manufacturer equivalent) and the Crouzet 84137870N (cross-manufacturer substitute with load voltage range limitation).

Parameter Comparison

Engineering Selection Recommendations

The Sensata-Crydom D1D40 serves as the direct manufacturer equivalent to the D1D40L. Both parts maintain identical electrical specifications for load current, input voltage range, on-state resistance, and physical form factor. The D1D40 is currently in Active product status, making it the primary replacement option for discontinued D1D40L inventory.

The Crouzet 84137870N provides a cross-manufacturer substitute option. This part maintains the same 40A load current rating, hockey puck package, and screw terminal configuration. However, the load voltage range is restricted to 5-60V compared to the D1D40L's 0-100V capability. The Crouzet part is suitable only for applications where the load voltage requirement does not exceed 60V. Both substitute options carry current RoHS compliance certifications and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the D1D40 directly replace the D1D40L without circuit modification?

A: Yes. The D1D40 is the direct manufacturer equivalent with identical electrical specifications, package form factor, and termination style. No circuit modification is required.

Q: What is the key limitation of the Crouzet 84137870N substitute?

A: The Crouzet 84137870N has a maximum load voltage rating of 60V, whereas the D1D40L supports 0-100V. Applications requiring load voltages above 60V cannot use this substitute.

Q: Are there input voltage compatibility differences between the three parts?

A: The D1D40L and D1D40 both accept 4.6-32VDC input control voltage. The Crouzet 84137870N requires a minimum of 4VDC input. For applications using control voltages below 4VDC, only the Sensata-Crydom parts are suitable.

Q: Do all three parts share the same physical mounting footprint?

A: Yes. All three parts use the hockey puck form factor with chassis mount configuration and screw terminal connections, ensuring mechanical compatibility in existing designs.

Q: What compliance certifications apply to each substitute option?

A: The D1D40L and D1D40 are ROHS3 Compliant. The Crouzet 84137870N is RoHS Compliant. All three parts are REACH Unaffected and carry EAR99 ECCN classification.