Harwin M20-9712445 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9712445 is a rectangular connector header, right-angle mounted, 24-position, 0.100" (2.54mm) pitch, designed for through-hole solder termination. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity. The part serves board-to-board and cable interconnection applications with unshrouded, single-row configuration and push-pull fastening.

Substiute Parts

M20-9712445

Harwin Inc.In Stock: 789M20-9712445 Datasheet

Current PartRFQ

0022288240

MolexIn Stock: 12530022288240 Datasheet

MFR RecommendedRFQ

0022288242

MolexIn Stock: 8420022288242 Datasheet

MFR RecommendedRFQ

890-70-024-20-002101

Preci-DipIn Stock: 995890-70-024-20-002101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Harwin M20-9712445 is determined by the following critical parameters that must align across all candidate parts:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 24
• Number of Rows: 1
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Type: Male Pin
• Connector Category: Rectangular Connectors, Header style
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

The three substitute parts identified—Molex 0022288240, Molex 0022288242, and Preci-Dip 890-70-024-20-002101—satisfy these core electrical and mechanical parameters. Variations in contact finish, insulation height, and contact length fall within acceptable tolerances for board-to-board interconnection applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance and UL94 V-0 flammability ratings, providing regulatory continuity for the obsolete Harwin M20-9712445.

Molex 0022288240 and Molex 0022288242 are functionally equivalent KK254 series headers with identical pitch, position count, and mounting configuration. The primary distinction is contact finish: 0022288240 features tin mating contact finish, while 0022288242 provides gold mating contact finish matching the original Harwin part. Both are available in active production status with high inventory levels.

Preci-Dip 890-70-024-20-002101 offers the closest mechanical alignment to the original part, with identical contact length specifications (0.276" mating, 0.118" post) and insulation height (0.100"). This part also features gold mating contact finish and supports an extended operating temperature range (-55°C ~ 125°C) compared to the original specification (-40°C ~ 105°C).

For applications requiring exact dimensional and contact finish compatibility, Preci-Dip 890-70-024-20-002101 is the primary substitute. For cost-optimized alternatives with equivalent electrical performance, Molex 0022288242 (gold finish) or 0022288240 (tin finish) are suitable selections.

Frequently Asked Questions (FAQ)

Q: Can Molex 0022288240 (tin finish) be used in place of the gold-finish Harwin M20-9712445?

A: Molex 0022288240 is electrically and mechanically compatible with the original part. The tin contact finish is suitable for general-purpose board-to-board interconnection. However, if the original design specified gold finish for corrosion resistance or specific mating cycle requirements, Molex 0022288242 (gold finish) or Preci-Dip 890-70-024-20-002101 are preferred alternatives.

Q: What is the difference between Molex 0022288240 and 0022288242?

A: Both parts are identical KK254 series 24-position headers with 0.100" pitch and right-angle through-hole mounting. The sole difference is the mating contact finish: 0022288240 uses tin, while 0022288242 uses gold. All other electrical and mechanical parameters are equivalent.

Q: Does the Preci-Dip 890-70-024-20-002101 have different contact dimensions than the Harwin original?

A: No. The Preci-Dip part maintains identical contact length specifications: 0.276" (7.00mm) mating contact length and 0.118" (3.00mm) post length, matching the Harwin M20-9712445 exactly. Insulation height is also identical at 0.100" (2.54mm).

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts—Molex 0022288240, Molex 0022288242, and Preci-Dip 890-70-024-20-002101—are ROHS3 compliant and carry UL94 V-0 flammability ratings, ensuring regulatory alignment with the original Harwin part.

Q: What is the current rating for the Molex substitute parts?

A: Current rating specifications are not provided for the Molex KK254 series parts in the available data. For applications requiring confirmed 3A per-contact rating, Preci-Dip 890-70-024-20-002101 explicitly specifies 3A current capacity, matching the original Harwin part.

Q: Can these connectors be cut or broken away to reduce position count?

A: The Harwin M20-9712445 is specified as "cuttable." The Molex parts are specified as "breakaway." The Preci-Dip 890-70-024-20-002101 is specified as standard "header" without explicit cuttable or breakaway designation. Verify connector design with the manufacturer if position reduction is required for your application.