M20-9751942 Equivalent & Substitute Parts

Part Overview

The M20-9751942 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle mounting applications. This 19-position connector operates at 0.100" (2.54mm) pitch and supports 3A per contact with an operating temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

M20-9751942

Harwin Inc.In Stock: 934M20-9751942 Datasheet

Current PartRFQ

PRPC019SBAN-M71RC

Sullins Connector SolutionsIn Stock: 833PRPC019SBAN-M71RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M20-9751942 is determined by strict alignment of the following electrical and mechanical parameters:

• Connector Configuration: 19-position, single-row header with 0.100" (2.54mm) pitch spacing
• Mounting Orientation: Right-angle, through-hole PCB mounting
• Contact Specifications: Male pins with 3A per contact current rating
• Electrical Performance: Operating temperature range of -40°C to 105°C
• Compliance Requirements: UL94 V-0 flammability rating and ROHS3 compliance
• Termination Method: Solder attachment to PCB

The PRPC019SBAN-M71RC from Sullins Connector Solutions meets all these criteria and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The PRPC019SBAN-M71RC is suitable as a substitute for the M20-9751942 based on the following factors:

• Product Status: The substitute part is active and in current production, ensuring long-term availability and supply chain stability compared to the obsolete M20-9751942.
• Compliance Alignment: Both parts maintain UL94 V-0 flammability rating and ROHS3 compliance, meeting regulatory requirements for equivalent applications.
• Electrical Equivalence: Identical pitch (0.100"), position count (19), contact rating (3A per contact), and operating temperature range (-40°C to 105°C) ensure functional compatibility in existing designs.
• Mechanical Compatibility: Contact dimensions vary minimally (mating contact length 0.228" vs. 0.230"; post length 0.118" vs. 0.120"), remaining within typical PCB design tolerances for right-angle through-hole mounting.

Minor differences in insulation material (Nylon 6T vs. PBT) and post contact finish (Tin vs. Gold) do not affect functional performance in standard board-to-board or cable applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the PRPC019SBAN-M71RC directly replace the M20-9751942 in existing PCB designs?

A: Yes. Both connectors share identical pitch (0.100"), position count (19), mounting type (through-hole right-angle), and electrical ratings (3A per contact, -40°C to 105°C). Contact dimension variations are within standard PCB design tolerances.

Q: What is the primary reason for substitution?

A: The M20-9751942 is classified as obsolete. The PRPC019SBAN-M71RC is an active product from Sullins Connector Solutions, providing assured long-term availability and supply continuity.

Q: Are there compliance differences between these parts?

A: No. Both parts are ROHS3 compliant and carry UL94 V-0 flammability ratings, meeting equivalent regulatory requirements.

Q: How do the insulation materials differ?

A: The M20-9751942 uses Polyamide (PA6T/Nylon 6T), while the PRPC019SBAN-M71RC uses Polybutylene Terephthalate (PBT). Both materials support the identical operating temperature range and flammability rating.

Q: What is the difference between "Cuttable" and "Breakaway" connector types?

A: Both designations refer to segmented header designs allowing individual pins or pin groups to be separated. This functional capability is equivalent between the two parts.

Q: Are contact finish differences significant?

A: The M20-9751942 has tin-plated posts; the PRPC019SBAN-M71RC has gold-plated posts. Both finishes support solder termination and 3A per contact current rating. Gold plating provides enhanced corrosion resistance in the substitute part.