DC60A40 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The DC60A40 is a Solid State Relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) switching device in a Hockey Puck package. This relay is designed for DC load switching applications with a rated load current of 40A and load voltage range of 1V to 48V. The product is currently classified as Obsolete, making identification of suitable substitute components essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

DC60A40

Sensata-CrydomIn Stock: 804DC60A40 Datasheet

Current PartRFQ

DC60D40

Sensata-CrydomIn Stock: 1135DC60D40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DC60A40 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Load Current Rating: Must be rated for 40A minimum to handle the same load conditions
• Load Voltage Range: Must support 1V to 48V DC output switching
• On-State Resistance: Must not exceed 9 mOhms to maintain thermal and efficiency characteristics
• Package / Case: Must be Hockey Puck form factor for mechanical compatibility with existing mounting
• Termination Style: Must use Screw Terminal for direct connection compatibility
• Output Type: Must be DC for load switching applications

The DC60D40 meets all substitution criteria as an active product within the PowerPlus DC series, offering identical electrical performance specifications and mechanical compatibility while providing current availability and active product support status.

Parameter Comparison

Engineering Selection Recommendations

The DC60D40 is the direct functional equivalent for DC60A40 applications. Both components maintain identical load switching specifications (40A, 1V–48V DC), circuit topology (SPST-NO), and mechanical form factor (Hockey Puck with Screw Terminal). The DC60D40 is classified as an Active product with current manufacturing support and ROHS3 compliance, providing supply chain continuity and regulatory alignment for new designs and system replacements.

The primary difference between the two components is the input voltage specification: the DC60A40 accepts 90–140 VAC input, while the DC60D40 operates on 4–32 VDC input. Component selection must account for the available control voltage in the target application to ensure proper relay operation.

Frequently Asked Questions (FAQ)

Q: Can the DC60D40 directly replace the DC60A40 in existing applications?

A: Direct replacement is possible only if the control circuit provides 4–32 VDC input voltage. The DC60A40 requires 90–140 VAC input. If the existing system uses AC control voltage, the DC60D40 cannot be used without control circuit modification.

Q: Are the load switching specifications identical between DC60A40 and DC60D40?

A: Yes. Both components are rated for 40A load current, 1V–48V DC load voltage range, and 9 mOhms maximum on-state resistance. Load switching performance is equivalent.

Q: Does the Hockey Puck package ensure mechanical compatibility?

A: Yes. Both components use the Hockey Puck form factor with Screw Terminal termination, ensuring identical mounting and connection compatibility in chassis-mount applications.

Q: What is the significance of the DC60D40 being ROHS3 compliant?

A: ROHS3 compliance indicates the DC60D40 meets current environmental and material restriction standards for electronic components. This is relevant for applications subject to regulatory compliance requirements or customer specifications mandating ROHS certification.

Q: Why is the DC60A40 classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The DC60D40 serves as the active replacement within the PowerPlus DC series, providing equivalent functionality with ongoing manufacturing support.