MDF12-1822PC Equivalent & Substitute Parts

Part Overview

The MDF12-1822PC 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 operates within RoHS-compliant specifications and carries unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

MDF12-1822PC

Hirose Electric Co LtdIn Stock: 1227MDF12-1822PC 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 MDF12-1822PC is determined by the following critical parameters:

Primary Compatibility Criteria:

• Wire gauge range: 18-22 AWG (exact match required)
• Terminal type: Through board, locking configuration
• Contact finish: Tin plating
• RoHS compliance status
• Moisture sensitivity level: MSL 1 or better

Secondary Compatibility Factors:

• Insulation diameter range overlap
• Overall length tolerance for board mounting
• Contact material electrical properties
• Regulatory compliance (ECCN, HTSUS classification)

The substitute part 3-640311-1 (TE Connectivity AMP Connectors) satisfies all primary criteria while maintaining functional equivalence within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

The 3-640311-1 (TE Connectivity AMP Connectors) qualifies as a functional equivalent to the obsolete MDF12-1822PC based on the following engineering criteria:

Compliance & Regulatory Alignment: Both parts maintain RoHS compliance and identical ECCN/HTSUS classifications, ensuring regulatory continuity in applications subject to export control or environmental standards.

Electrical & Mechanical Compatibility: Wire gauge specification (18-22 AWG), terminal locking mechanism, and tin contact finish are identical across both parts. The phosphor bronze contact material in the TE part provides equivalent electrical conductivity and mechanical durability for this wire gauge range.

Operational Considerations: The TE part features a shorter overall length (0.260" vs. 0.370") and wider insulation diameter tolerance (0.060" ~ 0.110" vs. 0.059" ~ 0.087"). These dimensional differences require verification against specific board mounting depth and wire insulation specifications in the target application.

Supply & Lifecycle Status: The TE part maintains active production status with substantial inventory availability (32,400 pcs), providing long-term supply security compared to the obsolete Hirose component.

Frequently Asked Questions (FAQ)

Q: Can the 3-640311-1 directly replace the MDF12-1822PC in existing assemblies?

A: The 3-640311-1 is electrically and mechanically compatible for 18-22 AWG wire applications with through-board, locking terminal requirements. However, the shorter overall length (0.260" vs. 0.370") must be verified against board mounting depth specifications. Physical testing in the target connector housing is recommended before full production transition.

Q: What are the key differences between these two parts?

A: Primary differences include contact material (brass vs. phosphor bronze), overall length (0.370" vs. 0.260"), and insulation diameter tolerance range (0.059"-0.087" vs. 0.060"-0.110"). Wire gauge, terminal type, finish, and compliance specifications are identical.

Q: Are there any packaging or supply chain considerations?

A: The MDF12-1822PC is obsolete with limited remaining inventory. The 3-640311-1 is supplied in cut tape (CT) packaging with active production status and 32,400 pcs in stock, providing reliable long-term availability for new designs and ongoing production requirements.

Q: Do both parts meet the same environmental and regulatory standards?

A: Yes. Both parts are RoHS compliant, carry MSL 1 (unlimited) moisture sensitivity rating, and share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Q: What should be verified before implementing the substitute part?

A: Confirm that the shorter length of the 3-640311-1 (0.260" vs. 0.370") accommodates the target board mounting depth. Verify wire insulation diameter compatibility within the overlapping tolerance range. Conduct functional testing in the specific connector housing assembly to ensure locking mechanism and electrical performance meet application requirements.