MDF12A-1822PC Equivalent & Substitute Parts

Part Overview

The MDF12A-1822PC is a crimp contact terminal manufactured by Hirose Electric Co Ltd, designed for through-board, locking applications with 18-22 AWG wire gauge compatibility. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The part features tin-plated brass contacts with RoHS compliance and unlimited moisture sensitivity rating, suitable for applications requiring reliable electrical connections in standard environmental conditions.

Substiute Parts

MDF12A-1822PC

Hirose Electric Co LtdIn Stock: 923MDF12A-1822PC Datasheet

Current PartRFQ

3-640311-1

TE Connectivity AMP ConnectorsIn Stock: 324503-640311-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDF12A-1822PC is determined by the following critical parameters:

• Wire Gauge Compatibility: 18-22 AWG requirement must be maintained
• Terminal Type: Through board, locking configuration
• Contact Finish: Tin plating for corrosion resistance and solderability
• Insulation Diameter Range: Must accommodate 0.083" ~ 0.114" (2.11mm ~ 2.90mm) wire insulation
• RoHS Compliance: Required for regulatory alignment
• Moisture Sensitivity Level: MSL 1 (Unlimited) classification

The substitute part 3-640311-1 from TE Connectivity AMP Connectors meets these core functional requirements while maintaining active product status and enhanced inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 3-640311-1 terminal from TE Connectivity AMP Connectors serves as the primary equivalent for the obsolete MDF12A-1822PC. Selection rationale is based on:

• Product Status Alignment: The substitute maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both components achieve RoHS compliance and share identical ECCN and HTSUS classifications, supporting consistent regulatory documentation
• Functional Equivalence: Wire gauge, terminal type, contact finish, and moisture sensitivity specifications are directly compatible
• Packaging Availability: The substitute is available in Cut Tape (CT) packaging with significantly higher inventory levels (32,400 units), supporting both prototype and production-volume requirements

The insulation diameter range of the substitute (0.060" ~ 0.110") encompasses the original specification (0.083" ~ 0.114"), providing compatibility with the intended wire gauge range. Contact material differs (phosphor bronze versus brass), but both materials with tin finish provide equivalent electrical and corrosion resistance performance for this terminal application class.

Frequently Asked Questions (FAQ)

Q: Can the 3-640311-1 be used as a direct replacement for MDF12A-1822PC in existing designs?

A: Yes. Both components share identical wire gauge (18-22 AWG), terminal type (through board, locking), contact finish (tin), and moisture sensitivity classification (MSL 1). The insulation diameter range of the substitute encompasses the original specification, ensuring mechanical and electrical compatibility.

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

A: The contact material differs: MDF12A-1822PC uses brass, while 3-640311-1 uses phosphor bronze. Both materials with tin plating provide equivalent performance for this terminal class. The substitute also features a slightly wider insulation diameter range (0.060" ~ 0.110" versus 0.083" ~ 0.114").

Q: Why is the MDF12A-1822PC classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 3-640311-1 substitute is actively manufactured, providing a path forward for applications requiring this terminal type.

Q: Does packaging format affect substitution eligibility?

A: No. The MDF12A-1822PC packaging is unspecified in the original documentation, while the substitute is available in Cut Tape (CT) format. Packaging affects handling and logistics but does not impact electrical or mechanical compatibility.

Q: Are both components RoHS compliant?

A: Yes. Both MDF12A-1822PC and 3-640311-1 are RoHS compliant and share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.