CSD2490 Equivalent & Substitute Parts

Part Overview

The CSD2490 is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device rated for 90A load current at 24–280V AC output. The component features a hockey puck form factor with screw terminal connections and zero-cross switching capability for AC loads. The CSD2490 is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

CSD2490

Sensata-CrydomIn Stock: 1111CSD2490 Datasheet

Current PartRFQ

CSW2490

Sensata TechnologiesIn Stock: 846CSW2490 Datasheet

DirectRFQ

84134040

Sensata-CrydomIn Stock: 112884134040 Datasheet

MFR RecommendedRFQ

84137480N

CrouzetIn Stock: 108884137480N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSD2490 is determined by the following critical parameters: circuit configuration (SPST-NO), output type (AC with zero-cross switching), package form factor (hockey puck), mounting type (chassis mount), termination style (screw terminal), and electrical ratings within acceptable operating ranges.

The substitute parts are grouped into two categories:

Direct Functional Equivalent (CSW2490): Maintains identical load current (90A) and load voltage range (24–280V), with expanded input voltage range (3–32VDC vs. 4.6–15VDC). Identical circuit topology, output switching characteristics, and mechanical form factor.

Upgraded Current Rating (84134040): Increases load current capacity to 100A while maintaining the same load voltage range (24–280V) and circuit configuration. Suitable for applications where the CSD2490's 90A rating is marginal or where future current headroom is required.

Elevated Voltage Rating (84137480N): Shifts the load voltage range to 48–660V while maintaining 90A current capacity. Applicable only to systems operating at higher AC voltages outside the CSD2490's 24–280V specification.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement with minimal design impact: CSW2490 is the primary substitute. It maintains electrical equivalence at 90A and 24–280V, with broader input voltage tolerance (3–32VDC). The part is classified as Last Time Buy, indicating limited future availability; procurement should prioritize this option for near-term requirements.

For applications requiring increased current margin: 84134040 provides 100A capacity within the same 24–280V load range. This part is Active status with RoHS compliance, making it suitable for new designs and long-term availability. Select this option when the CSD2490's 90A rating approaches system load requirements.

For systems operating at elevated AC voltages: 84137480N accommodates load voltages from 48–660V while maintaining 90A current capacity. This part is Active status and RoHS compliant. Selection is restricted to applications where the load voltage exceeds 280V; it is not suitable for 24–280V systems.

Compliance considerations: All substitute parts carry RoHS compliance certifications. The CSD2490 product status (Obsolete) and CSW2490 status (Last Time Buy) indicate supply constraints; 84134040 and 84137480N offer superior long-term availability as Active products.

Frequently Asked Questions (FAQ)

Q: Can CSW2490 replace CSD2490 in all applications? A: Yes, within the CSD2490's original operating envelope (24–280V load, 90A). CSW2490 expands the input voltage range to 3–32VDC, providing additional design flexibility. Both parts are electrically and mechanically equivalent.

Q: When should 84134040 be selected instead of CSW2490? A: Select 84134040 when the application load current approaches or exceeds 90A, or when long-term component availability is critical. The 100A rating provides additional margin and Active product status ensures sustained supply.

Q: Is 84137480N compatible with 24–280V systems? A: No. The 84137480N load voltage range is 48–660V. It is not suitable for systems operating at 24–280V. Use CSW2490 or 84134040 for this voltage range.

Q: What is the impact of the expanded input voltage range in CSW2490? A: CSW2490 accepts input control signals from 3–32VDC, compared to CSD2490's 4.6–15VDC. This broader range accommodates a wider variety of control circuit designs without requiring additional conditioning or regulation.

Q: Are all substitute parts available in the same hockey puck package? A: Yes. All substitute parts (CSW2490, 84134040, 84137480N) use the hockey puck form factor with screw terminal connections, ensuring mechanical compatibility with existing mounting and wiring infrastructure.

Q: What is the significance of "Last Time Buy" status for CSW2490? A: Last Time Buy indicates that Sensata Technologies will cease production of CSW2490 after a defined cutoff date. Customers requiring this part should place final orders before the deadline. For new designs, 84134040 or 84137480N are preferred due to Active status.