CD4825D1U Equivalent & Substitute Parts

Part Overview

The CD4825D1U is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in a hockey puck package. This component is rated for 25A load current at 48V to 660V AC output with zero-cross switching capability and 4-15VDC input control voltage. The CD4825D1U is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing system maintenance.

Substiute Parts

CD4825D1U

Sensata-CrydomIn Stock: 1013CD4825D1U Datasheet

Current PartRFQ

CC4825W1U

Sensata TechnologiesIn Stock: 1003CC4825W1U Datasheet

DirectRFQ

CD4825D2U

Sensata-CrydomIn Stock: 847CD4825D2U Datasheet

MFR RecommendedRFQ

CD4825W2U

Sensata-CrydomIn Stock: 815CD4825W2U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4825D1U is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) x 2 channels
• Load Specifications: 25A at 48V to 660V AC with zero-cross switching
• Mounting and Termination: Chassis mount with screw terminals in hockey puck package
• Input Control Voltage: 4-15VDC (primary specification) or 4-32VDC (extended range acceptable)
• Series Compatibility: Evolution Dual series

Three active substitute parts meet these criteria: CC4825W1U (direct manufacturer equivalent with extended input voltage range), CD4825D2U (manufacturer-recommended direct replacement with identical input voltage), and CD4825W2U (manufacturer-recommended variant with extended input voltage range and bulk packaging).

Parameter Comparison

Engineering Selection Recommendations

CD4825D2U is the primary replacement for CD4825D1U. This part maintains identical input voltage specifications (4-15VDC) and all load parameters while offering active product status and RoHS compliance. Selection of CD4825D2U eliminates any input voltage range considerations and provides direct functional equivalence.

CD4825W2U serves as an alternative when extended input voltage range (4-32VDC) is required or beneficial for system flexibility. This part is available in bulk packaging and maintains all other electrical and mechanical specifications. RoHS compliance is confirmed.

CC4825W1U is a direct manufacturer equivalent from Sensata Technologies with extended input voltage range (4-32VDC). This part provides functional equivalence with the added benefit of broader input voltage tolerance. RoHS compliance is confirmed.

All three substitute parts are active products with confirmed RoHS compliance, ensuring long-term availability and regulatory alignment for new designs and system upgrades.

Frequently Asked Questions (FAQ)

Q: Can CD4825D2U directly replace CD4825D1U without circuit modifications?

A: Yes. CD4825D2U maintains identical input voltage range (4-15VDC), load voltage (48-660V), load current (25A), circuit configuration (SPST-NO x 2), output type (AC, zero cross), mounting type (chassis mount), termination style (screw terminal), and package type (hockey puck). No circuit modifications are required.

Q: What is the difference between CD4825D2U and CD4825W2U?

A: Both parts are electrically equivalent with identical load specifications. CD4825W2U accepts extended input voltage range (4-32VDC) compared to CD4825D2U (4-15VDC). CD4825W2U is supplied in bulk packaging. Selection depends on input voltage requirements and packaging preferences.

Q: Is CC4825W1U compatible with existing CD4825D1U installations?

A: Yes. CC4825W1U provides functional equivalence across all critical parameters: circuit configuration, load specifications, mounting, termination, and package type. The extended input voltage range (4-32VDC) is backward compatible with 4-15VDC control circuits. CC4825W1U is manufactured by Sensata Technologies and is RoHS compliant.

Q: Why is the CD4825D1U classified as obsolete?

A: The CD4825D1U is no longer in active production. Active equivalent parts (CD4825D2U, CD4825W2U, CC4825W1U) are available from Sensata-Crydom and Sensata Technologies with confirmed RoHS compliance and ongoing manufacturing support.

Q: Are all substitute parts available in the same hockey puck package?

A: Yes. All substitute parts (CC4825W1U, CD4825D2U, CD4825W2U) use the hockey puck package with chassis mount configuration and screw terminal termination, ensuring mechanical and electrical compatibility with existing installations.

Q: What compliance certifications apply to the substitute parts?

A: All substitute parts are RoHS compliant. All parts carry ECCN EAR99 classification and HTSUS code 8536.41.0060, matching the regulatory profile of the original CD4825D1U.