MDF12-1822PCF Equivalent & Substitute Parts

Part Overview

The MDF12-1822PCF 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, necessitating identification of active equivalent parts to maintain supply chain continuity and support ongoing production requirements. The part is RoHS compliant and carries MSL 1 (unlimited moisture sensitivity level) rating.

Substiute Parts

MDF12-1822PCF

Hirose Electric Co LtdIn Stock: 1055MDF12-1822PCF Datasheet

Current PartRFQ

3-640311-1

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MDF12-1822PCF 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 0.059" ~ 0.087" (1.50mm ~ 2.21mm) wire insulation
• Regulatory Compliance: RoHS compliance and MSL 1 rating required
• Electrical Classification: ECCN EAR99 and HTSUS 8536.90.4000 category

The substitute part 3-640311-1 meets these core functional requirements while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The 3-640311-1 substitute part is suitable for applications currently using the MDF12-1822PCF based on the following factors:

• Regulatory Alignment: Both parts maintain RoHS compliance and identical MSL 1 ratings, ensuring compatibility with environmental and reliability standards
• Functional Equivalence: Wire gauge (18-22 AWG), terminal type (through board, locking), and contact finish (tin) are identical across both parts
• Supply Continuity: The substitute part carries active product status with substantially higher inventory availability (32400 pcs vs. 1021 pcs), providing long-term supply security
• Insulation Diameter Compatibility: The substitute's insulation diameter range (0.060" ~ 0.110") fully encompasses the main part's range (0.059" ~ 0.087"), ensuring wire accommodation compatibility
• Trade-off Consideration: The substitute part is 0.110" (2.80mm) shorter in overall length. PCB mounting depth and connector housing compatibility must be verified during design validation

Frequently Asked Questions (FAQ)

Q: Can 3-640311-1 be used as a direct replacement for MDF12-1822PCF in existing designs?

A: The 3-640311-1 is functionally equivalent for wire gauge, terminal type, and electrical characteristics. However, the 0.110" (2.80mm) difference in overall length requires verification that the substitute accommodates the existing PCB mounting depth and connector housing geometry. Contact material differs (phosphor bronze vs. brass), but both support tin plating and meet the same electrical and environmental standards.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by: wire gauge (18-22 AWG), terminal type (through board, locking), contact finish (tin), insulation diameter range compatibility, RoHS compliance, and MSL 1 rating. These parameters ensure electrical performance, environmental reliability, and regulatory compliance equivalence.

Q: Why is the substitute part shorter than the original?

A: The 3-640311-1 has an overall length of 0.260" (6.60mm) compared to the MDF12-1822PCF at 0.370" (9.40mm). This dimensional difference reflects different connector housing designs between the Hirose MDF12 series and the TE Connectivity Mini Amp-In series. PCB mounting depth compatibility must be confirmed for your specific application.

Q: Are there packaging differences between the main part and substitute?

A: The MDF12-1822PCF packaging is not specified in available documentation. The 3-640311-1 is supplied in Cut Tape (CT) packaging, which is standard for terminal components and suitable for automated assembly processes.

Q: What is the inventory advantage of using the substitute part?

A: The 3-640311-1 has 32400 pcs in stock compared to 1021 pcs for the MDF12-1822PCF. This 31-fold inventory advantage provides improved lead times and supply chain reliability, particularly important given the obsolete status of the original part.

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

A: Yes. Both the MDF12-1822PCF and 3-640311-1 are RoHS compliant, carry MSL 1 (unlimited) ratings, and share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications, ensuring equivalent regulatory treatment and environmental compliance.