M20-9963246 Equivalent & Substitute Parts

Part Overview

The M20-9963246 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle mounting applications. This 32-position connector operates at 0.100" (2.54mm) pitch with male pin contacts and solder termination. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and component procurement.

Substiute Parts

M20-9963246

Harwin Inc.In Stock: 951M20-9963246 Datasheet

Current PartRFQ

M20-9963646

Harwin Inc.In Stock: 1236M20-9963646 Datasheet

MFR RecommendedRFQ

0022288320

MolexIn Stock: 7550022288320 Datasheet

MFR RecommendedRFQ

0022288322

MolexIn Stock: 8570022288322 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9963246 is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical and electrical compatibility
• Number of Positions: 32 — determines connector capacity and footprint
• Contact Type: Male Pin — defines mating interface
• Mounting Type: Through Hole, Right Angle — establishes PCB assembly method
• Termination: Solder — specifies connection method
• Material Flammability Rating: UL94 V-0 — ensures safety compliance
• RoHS Status: ROHS3 Compliant — confirms environmental regulation adherence

The substitute parts listed below maintain these core parameters, ensuring functional equivalence in board-to-board or cable applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (32-Position, Same Pitch)

The Molex 0022288320 and 0022288322 connectors provide direct functional equivalence to the M20-9963246. Both maintain the 32-position configuration, 0.100" (2.54mm) pitch, male pin contact type, through-hole right-angle mounting, and solder termination. Both are ROHS3 compliant and UL94 V-0 rated. The primary distinction is contact finish: 0022288320 features tin finish on mating contacts, while 0022288322 provides gold finish on mating contacts. Both parts are currently in active production status.

Minor dimensional variations exist in contact length and insulation height between Harwin and Molex designs (approximately 0.004" to 0.006" difference), which remain within typical PCB assembly tolerances for standard 2.54mm pitch applications.

Alternative Configuration (36-Position)

The Harwin M20-9963646 offers a 36-position variant within the same M20 series. This part maintains identical pitch, mounting type, termination, and material specifications as the main part. Selection of this alternative is appropriate only when design requirements permit increased connector capacity and the additional 4 positions are utilized.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0022288320 or 0022288322 directly replace the M20-9963246 in existing designs?

A: Yes. Both Molex parts maintain the critical substitution parameters: 32 positions, 0.100" (2.54mm) pitch, male pin contacts, through-hole right-angle mounting, and solder termination. Minor dimensional variations in contact length (0.004" difference) and insulation height (0.002" difference) are within standard PCB assembly tolerances and do not affect functional compatibility.

Q: What is the difference between Molex 0022288320 and 0022288322?

A: The primary difference is mating contact finish. The 0022288320 features tin plating on mating contacts, while the 0022288322 features gold plating on mating contacts. Both parts are electrically and mechanically equivalent otherwise. Gold finish may be selected for applications requiring enhanced corrosion resistance or improved contact reliability in harsh environments.

Q: Why is the M20-9963646 (36-position) listed as a substitute if it has a different position count?

A: The M20-9963646 is listed as a manufacturer-recommended alternative within the Harwin M20 series. It is suitable only when design requirements permit increased connector capacity. The 36-position configuration maintains all other critical parameters and is appropriate for new designs or redesigns that can accommodate the additional positions.

Q: Are there any compliance or certification differences between these parts?

A: All listed parts are ROHS3 compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity classification. Compliance profiles are equivalent across all substitutes.

Q: What are the inventory considerations for these parts?

A: The M20-9963246 (main part) is obsolete with 872 units in stock. Active alternatives include M20-9963646 (1149 units), 0022288320 (679 units), and 0022288322 (794 units). Procurement should prioritize active production parts to ensure long-term supply chain continuity.