DC200A20 Equivalent & Substitute Parts

Part Overview

The DC200A20 is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a hockey puck package. This component is rated for 20A load current with an input voltage range of 90–140VAC and a load voltage range of 1–150VDC. The DC200A20 is classified as obsolete, necessitating identification of active equivalent parts to maintain system functionality and ensure continued component availability for new designs and field replacements.

Substiute Parts

DC200A20

Sensata-CrydomIn Stock: 743DC200A20 Datasheet

Current PartRFQ

DC200D20

Sensata-CrydomIn Stock: 890DC200D20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The DC200D20 qualifies as a direct substitute for the DC200A20 based on the following critical parameters:

• Circuit Configuration: Both devices are SPST-NO (1 Form A) relays
• Output Type: Both are DC output devices
• Load Current Rating: Both are rated for 20 A
• Load Voltage Range: Both support 1 V – 150 V
• On-State Resistance: Both have a maximum of 39 mOhms
• Package Type: Both use hockey puck packaging
• Mounting Type: Both are chassis mount
• Termination Style: Both use screw terminals

The primary difference is the input voltage specification: the DC200A20 accepts 90–140VAC input, while the DC200D20 accepts 4–32VDC input. Selection between these substitutes depends on the control signal voltage available in the application.

Parameter Comparison

Engineering Selection Recommendations

The DC200D20 is the primary substitute for the obsolete DC200A20. Both devices share identical electrical and mechanical specifications for load handling, circuit configuration, and package form factor. The DC200D20 is currently in active production status, ensuring long-term availability and supply chain continuity.

The selection between these parts is determined by the control signal voltage available in the application. The DC200A20 operates with AC input (90–140VAC), while the DC200D20 operates with DC input (4–32VDC). Applications requiring AC control signals must retain the DC200A20 or source remaining inventory. Applications with DC control signals should transition to the DC200D20.

The DC200D20 carries ROHS3 compliance certification, providing additional environmental and regulatory alignment for new designs and systems subject to RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can the DC200D20 directly replace the DC200A20 in all applications?

A: The DC200D20 is mechanically and electrically compatible with the DC200A20 for load switching operations. However, the control signal voltage differs: DC200A20 requires 90–140VAC input, while DC200D20 requires 4–32VDC input. Substitution is valid only when the application control circuit can supply the appropriate input voltage.

Q: What is the difference in on-state resistance between these parts?

A: Both the DC200A20 and DC200D20 have identical maximum on-state resistance of 39 mOhms. No performance difference exists in this parameter.

Q: Are both parts available in the same package?

A: Yes. Both the DC200A20 and DC200D20 use hockey puck packaging with screw terminal connections and chassis mount configuration. Physical installation is identical.

Q: Why is the DC200A20 obsolete?

A: The DC200A20 is classified as obsolete by the manufacturer. The DC200D20 represents the active equivalent in the PowerPlus DC series and should be specified for new designs.

Q: What compliance certifications apply to the DC200D20?

A: The DC200D20 is ROHS3 compliant and REACH unaffected. Both parts carry ECCN EAR99 classification.

Q: Are the load voltage and current ratings identical?

A: Yes. Both parts are rated for 20 A load current and support load voltages from 1 V to 150 V.