KF-N4300246 Equivalent & Substitute Parts

Part Overview

The KF-N4300246 is a rectangular connector header manufactured by Harwin Inc., part of the PowerFit® series. This is a vertical through-hole connector with 4 positions arranged in 2 rows, designed for board-to-board or cable connections. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

KF-N4300246

Harwin Inc.In Stock: 859KF-N4300246 Datasheet

Current PartRFQ

0039281043

MolexIn Stock: 1265570039281043 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KF-N4300246 is determined by strict alignment of the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Position count (4 positions in 2 rows)
• Mating pitch (0.165" / 4.20mm)
• Row spacing (0.165" / 4.20mm)
• Mounting method (Through Hole)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Fastening mechanism (Locking Ramp)
• Insulation material (Polyamide PA66 / Nylon 6/6)
• Contact material (Brass)
• Contact finish (Tin)
• Flammability rating (UL94 V-2)
• Regulatory compliance (ROHS3, REACH Unaffected)

The Molex 0039281043 (Mini-Fit Jr 5566 series) meets all these criteria and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0039281043 is the qualified substitute for the obsolete Harwin KF-N4300246. Selection is based on the following factors:

• Both parts maintain identical mating pitch (0.165" / 4.20mm) and row spacing, ensuring mechanical and electrical compatibility with existing mating connectors and PCB layouts.
• Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
• Both parts carry UL94 V-2 flammability certification, maintaining safety standards for the application.
• The Molex part is currently in active production with substantial inventory availability (126,491 pieces), whereas the Harwin part is obsolete.
• Minor dimensional variations in contact post length (0.004" difference) and insulation height (0.01" difference) fall within acceptable tolerances for through-hole solder termination and do not affect functional performance.
• Both parts use identical contact materials (brass), insulation materials (PA66/Nylon 6/6), and tin finish specifications.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0039281043 be used as a direct replacement for the Harwin KF-N4300246?

A: Yes. Both connectors share identical mating pitch, row spacing, shrouding configuration, fastening mechanism, and termination method. The parts are mechanically and electrically compatible with the same mating connectors and PCB footprints.

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

A: The primary differences are manufacturer (Harwin vs. Molex), series designation (PowerFit® vs. Mini-Fit Jr 5566), and product status (obsolete vs. active). Minor dimensional variations exist in contact post length and insulation height, but these do not affect functional compatibility.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry UL94 V-2 flammability certification. Both have MSL rating of 1 (Unlimited) and identical ECCN and HTSUS classifications.

Q: What is the packaging difference?

A: The Harwin KF-N4300246 packaging information is not specified in the available data. The Molex 0039281043 is supplied in bulk packaging.

Q: Are the electrical ratings equivalent?

A: The Harwin part specifies 8A current rating and 600V voltage rating. The Molex part does not provide current and voltage ratings in the available data. Verify Molex specifications against your application requirements before final selection.

Q: What is the availability status?

A: The Harwin KF-N4300246 is obsolete. The Molex 0039281043 is active production with 126,491 pieces in stock.