AQCD3-IM4/24VDC Equivalent & Substitute Parts

Part Overview

The AQCD3-IM4/24VDC is a solid state relay (SSR) manufactured by Panasonic Electric Works, configured as a SPST-NO (1 Form A) module with DC output capability. This component is designed for low-current switching applications with a maximum load current of 25 mA and operates across input voltages of 3 to 32 VDC with load voltages ranging from 4 to 32 V. The product is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

AQCD3-IM4/24VDC

Panasonic Electric WorksIn Stock: 755AQCD3-IM4/24VDC Datasheet

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MPDCD3

Sensata-CrydomIn Stock: 1087MPDCD3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AQCD3-IM4/24VDC is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Output Type: Must be DC to ensure compatibility with existing load circuits
• Input Voltage Range: Must encompass or exceed the 3 ~ 32 VDC specification
• Load Voltage Range: Must encompass or exceed the 4 ~ 32 V specification
• Load Current Capacity: Must meet or exceed 25 mA minimum requirement
• Mounting Type: Must be Through Hole to fit existing PCB layouts
• Termination Style: Must be PC Pin for direct connection compatibility

The MPDCD3 manufactured by Sensata-Crydom meets all substitution criteria. While the MPDCD3 features a higher load current rating of 3 A (compared to 25 mA), this represents a design upgrade that maintains full backward compatibility. The expanded load voltage range (3 ~ 60 V versus 4 ~ 32 V) and identical input voltage specification (3 ~ 32 VDC) confirm functional equivalence for applications requiring the AQCD3-IM4/24VDC.

Parameter Comparison

Engineering Selection Recommendations

The MPDCD3 is the qualified substitute for the obsolete AQCD3-IM4/24VDC. Selection is based on the following engineering factors:

• Product Status: The MPDCD3 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete AQCD3-IM4/24VDC.
• Compliance: The MPDCD3 carries ROHS3 compliance certification, meeting current environmental and regulatory standards for electronic component manufacturing.
• Electrical Compatibility: Both components share identical input voltage specifications (3 ~ 32 VDC) and circuit configuration (SPST-NO), ensuring direct functional replacement in existing designs.
• Physical Compatibility: Both components utilize Through Hole mounting with PC Pin termination, maintaining compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the MPDCD3 directly replace the AQCD3-IM4/24VDC in existing designs?

A: Yes. Both components share identical circuit configuration (SPST-NO), output type (DC), input voltage range (3 ~ 32 VDC), mounting type (Through Hole), and termination style (PC Pin). The MPDCD3 provides expanded load voltage and current capabilities, making it a fully compatible substitute.

Q: What is the primary difference between these two components?

A: The MPDCD3 features a significantly higher load current rating (3 A versus 25 mA) and an expanded load voltage range (3 ~ 60 V versus 4 ~ 32 V). These represent design improvements that maintain backward compatibility with applications designed for the AQCD3-IM4/24VDC.

Q: Are there package considerations when substituting the MPDCD3 for the AQCD3-IM4/24VDC?

A: The AQCD3-IM4/24VDC uses a Module package, while the MPDCD3 uses a 4-SIP package. Both are Through Hole mounted with PC Pin termination. Physical dimensions should be verified against PCB layout constraints, though pin compatibility is maintained.

Q: Does the MPDCD3 meet current regulatory standards?

A: Yes. The MPDCD3 is ROHS3 compliant and carries REACH Unaffected status, meeting current environmental and regulatory requirements for electronic components.

Q: What is the moisture sensitivity level for the MPDCD3?

A: The MPDCD3 has a Moisture Sensitivity Level (MSL) of 1 (Unlimited), identical to the AQCD3-IM4/24VDC, indicating no moisture sensitivity restrictions for storage or handling.