M20-9971146 Equivalent & Substitute Parts

Part Overview

The M20-9971146 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting with 22 positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part features a cuttable header design with unshrouded, male pin contacts suitable for board-to-board or cable applications.

Substiute Parts

M20-9971146

Harwin Inc.In Stock: 949M20-9971146 Datasheet

Current PartRFQ

M20-9973646

Harwin Inc.In Stock: 777M20-9973646 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M20-9971146 is determined by the following critical parameters that must remain consistent:

• Pitch - Mating: 0.100" (2.54mm)
• Row Spacing - Mating: 0.100" (2.54mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Contact Material: Brass
• Contact Finish: Tin (both mating and post)
• Insulation Material: Polyamide (PA6T), Nylon 6T
• Operating Temperature Range: -40°C ~ 105°C
• Current Rating: 3A per Contact
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

The primary difference in substitute parts is the number of positions. The M20-9971146 is a 22-position connector, while substitute parts may offer different position counts within the same M20 series. Position count does not affect electrical or mechanical compatibility when the connector is cuttable, as the mating interface, contact geometry, and electrical characteristics remain identical.

Parameter Comparison

Engineering Selection Recommendations

The M20-9973646 is the manufacturer-recommended substitute for the M20-9971146. Both parts are members of the Harwin M20 series and share identical electrical and mechanical specifications with the exception of position count. The M20-9973646 maintains full compliance with ROHS3 and UL94 V-0 flammability requirements. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete M20-9971146.

The cuttable header design of both connectors allows the M20-9973646 to be cut to the required 22-position configuration, making it functionally equivalent for applications requiring the original part number. The identical pitch, row spacing, contact geometry, and electrical ratings ensure direct compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the M20-9973646 be used as a direct replacement for the M20-9971146?

A: Yes. The M20-9973646 is the manufacturer-recommended substitute. Both connectors share identical mating pitch (0.100"), row spacing (0.100"), contact type (male pin), contact material (brass with tin finish), insulation material (Polyamide PA6T), operating temperature range (-40°C to 105°C), and current rating (3A per contact). The M20-9973646 features a cuttable header design, allowing it to be cut to 22 positions to match the original part's configuration.

Q: What is the primary difference between these two parts?

A: The M20-9971146 is supplied as a 22-position connector, while the M20-9973646 is supplied as a 72-position connector. Both are cuttable headers within the same M20 series. The M20-9973646 can be cut to any required position count, including 22 positions, without affecting electrical or mechanical performance.

Q: Are there compliance or certification differences between the parts?

A: No. Both parts maintain identical compliance certifications: ROHS3 Compliant, UL94 V-0 flammability rating, and REACH Unaffected status. The primary difference is product status: the M20-9971146 is obsolete, while the M20-9973646 is active production.

Q: Does the higher position count of the M20-9973646 affect compatibility?

A: No. The position count does not affect electrical or mechanical compatibility. The mating interface, contact geometry, pitch, and electrical characteristics are identical. The cuttable design allows the 72-position connector to be configured for any required position count.

Q: What packaging considerations apply to the M20-9973646?

A: The M20-9973646 is supplied in bulk packaging, compared to the original part's unspecified packaging. Bulk packaging does not affect the connector's electrical or mechanical performance, only the quantity and presentation format.