PMNF1-4F-3K Equivalent & Substitute Parts

Part Overview

The PMNF1-4F-3K is a red insulated spade terminal connector manufactured by Panduit Corp, designed for crimp termination of 18-22 AWG wire onto M4 studs. This component is classified as Obsolete and is no longer in active production. Identification of equivalent and substitute parts is necessary to maintain system compatibility and ensure continued availability for applications requiring this terminal specification.

Substiute Parts

PMNF1-4F-3K

Panduit CorpIn Stock: 771PMNF1-4F-3K Datasheet

Current PartRFQ

PNF18-8F-3K

Panduit CorpIn Stock: 973PNF18-8F-3K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PMNF1-4F-3K is determined by the following critical parameters that must remain consistent:

Mandatory Matching Parameters:

• Wire Gauge: 18-22 AWG
• Termination Method: Crimp
• Insulation Type: Insulated
• Color: Red
• Mounting Type: Free Hanging (In-Line)
• Terminal Type: Standard Spade Terminal
• Features: Serrated Termination
• Tongue Inside Opening: 0.170" (4.32mm)

Allowable Variation Parameters:

• Stud/Tab Size: M4 Stud to 8 Stud (different connection points)
• Contact Material: Brass to Copper (both acceptable for tin-plated contact surfaces)
• Length - Overall: 0.850" to 0.830" (minor dimensional tolerance)
• Width - Outer Edges: 0.320" (consistent)
• Insulation Diameter: 0.146" to 0.090" ~ 0.145" (compatible range)

The substitute part PNF18-8F-3K meets all mandatory matching parameters while accommodating allowable variations in stud size and contact material composition.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PNF18-8F-3K

The PNF18-8F-3K is the direct functional equivalent for the obsolete PMNF1-4F-3K. Selection of this substitute is based on the following engineering criteria:

1. Product Status Alignment: The substitute part is Active and currently manufactured, ensuring long-term availability and supply chain continuity for the obsolete PMNF1-4F-3K.

2. Electrical Compatibility: Both parts maintain identical wire gauge (18-22 AWG), termination method (crimp), contact finish (tin), and serrated termination features. The tongue inside opening dimension (0.170") is identical, ensuring proper connection to mating studs.

3. Mechanical Compatibility: The substitute accommodates the same insulation diameter range (0.090" ~ 0.145" includes the original 0.146" specification) and maintains identical outer width (0.320"). Overall length variation (0.830" vs 0.850") is within acceptable mechanical tolerance for free-hanging in-line mounting applications.

4. Material Specification: Contact material change from Brass to Copper with tin plating maintains equivalent electrical performance and corrosion resistance for the intended application.

5. Compliance Status: The substitute part carries ROHS3 Compliance and REACH Unaffected status, meeting current regulatory requirements for electronic component procurement.

6. Series Continuity: Both parts belong to the Pan-Term® series, confirming design family compatibility and interchangeability within Panduit's terminal connector ecosystem.

Frequently Asked Questions (FAQ)

Q: Can PNF18-8F-3K be used as a direct replacement for PMNF1-4F-3K?

A: Yes. The PNF18-8F-3K is functionally equivalent for applications requiring 18-22 AWG crimp termination with red insulation and serrated termination features. The primary difference is the stud size (8 Stud vs M4 Stud), which requires verification that the mating stud in your application accepts an 8 Stud connection.

Q: What is the difference between M4 Stud and 8 Stud?

A: M4 Stud refers to a metric M4 threaded connection point, while 8 Stud refers to a #8 UNC (Unified National Coarse) threaded connection point. These are different stud standards and are not interchangeable. Verify your application's stud specification before substitution.

Q: Are the contact materials interchangeable?

A: Both Brass and Copper contact materials with tin plating provide equivalent electrical conductivity and corrosion resistance for this application category. The material change does not affect electrical performance or reliability.

Q: What does "Serrated Termination" mean?

A: Serrated termination refers to the crimping surface design that includes small ridges or serrations. This feature improves mechanical grip and electrical contact consistency during the crimp process, ensuring reliable wire termination.

Q: Why is the original part obsolete?

A: The PMNF1-4F-3K is classified as obsolete, indicating it is no longer manufactured by Panduit Corp. The PNF18-8F-3K represents the current active equivalent within the Pan-Term® product line.

Q: Does packaging affect substitution?

A: The substitute part is supplied in Cut Tape (CT) packaging, which may differ from the original packaging format. Verify that your procurement and assembly processes accommodate Cut Tape packaging, or confirm alternative packaging availability through your supplier.

Q: Is the insulation diameter range compatible?

A: Yes. The original part specifies 0.146" (3.71mm) insulation diameter, which falls within the substitute part's range of 0.090" ~ 0.145" (2.29mm ~ 3.68mm). This ensures proper fit and insulation coverage for 18-22 AWG wire.

Q: What compliance certifications apply to the substitute part?

A: The PNF18-8F-3K carries ROHS3 Compliance and REACH Unaffected status. Both parts share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications for export and tariff purposes.