M20-8761442P Equivalent & Substitute Parts

Part Overview

The M20-8761442P is a surface mount rectangular connector header manufactured by Harwin Inc., featuring 28 positions at 2.54mm pitch with dual rows. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and design requirements. The connector is designed for board-to-board or cable applications with solder termination and push-pull fastening.

Key Parameters

Parameter	M20-8761442P
Manufacturer	Harwin Inc.
Number of Positions	28
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Contact Type	Male Pin
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Position Count & Pitch: All substitutes maintain 28 positions at 0.100" (2.54mm) mating pitch with 2 rows at 0.100" row spacing
Mounting & Termination: Surface mount with solder termination required
Contact Configuration: Male pin, unshrouded headers with push-pull fastening
Electrical Ratings: 250V voltage rating and 3A per contact current capacity (where specified)
Environmental Compliance: UL94 V-0 flammability rating and ROHS3 compliance for active substitutes
Temperature Range: Operating temperature compatibility within specified limits

The M20-8761842 from Harwin differs in position count (36 vs. 28) and is therefore not a direct substitute but a higher-capacity alternative. The Amphenol ICC 71277-228H matches position and pitch specifications but is RoHS non-compliant. Samtec TSM series parts provide multiple active alternatives with equivalent electrical and mechanical parameters.

Parameter Comparison

Parameter	M20-8761442P	71277-228H	TSM-114-02-F-DV	TSM-114-02-F-DV-A	TSM-114-02-FM-DV	TSM-114-02-G-DV	TSM-114-02-G-DV-A	TSM-114-02-H-DV	TSM-114-02-L-DV-001	TSM-114-02-L-DV-A-006
Manufacturer	Harwin Inc.	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	28	28	28	28	28	28	28	28	28	28
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.228" (5.80mm)	0.318" (8.08mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Not specified	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Operating Temperature	-40°C ~ 105°C	Not specified	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: Samtec TSM-114 Series

The Samtec TSM-114-02 series provides the most direct substitution path for the obsolete M20-8761442P. All TSM variants maintain electrical and mechanical compatibility while offering active product status and ROHS3 compliance. Selection within the TSM series depends on specific contact finish requirements:

TSM-114-02-F-DV and TSM-114-02-F-DV-A: Standard gold mating finish (3.00µin) with tin post finish. The -A variant includes board guide feature.
TSM-114-02-G-DV and TSM-114-02-G-DV-A: Enhanced gold mating finish (10.0µin) with gold post finish (3.00µin). The -A variant includes board guide feature.
TSM-114-02-H-DV: Premium gold mating finish (30.0µin) with gold post finish (3.00µin) for extended contact life.
TSM-114-02-FM-DV: Standard configuration without board guide.
TSM-114-02-L-DV-001 and TSM-114-02-L-DV-A-006: 27 of 28 positions loaded. The -A variant includes board guide feature.

All TSM variants operate across -55°C to 125°C, exceeding the original -40°C to 105°C range, and feature Liquid Crystal Polymer insulation for improved thermal and mechanical performance.

Secondary Option: Amphenol ICC 71277-228H

The 71277-228H from Amphenol ICC (BERGSTIK® II series) matches position count and pitch specifications. However, this part is RoHS non-compliant and lacks specified operating temperature and current rating data. Use only where RoHS compliance is not required and legacy design compatibility is prioritized.

Not Recommended: M20-8761842

The M20-8761842 contains 36 positions versus the required 28 and is not a direct substitute. This part is suitable only for applications requiring increased connector capacity.

Frequently Asked Questions (FAQ)

Q: Can I use the Amphenol ICC 71277-228H as a direct replacement?

A: The 71277-228H matches the critical parameters of 28 positions at 2.54mm pitch with surface mount solder termination. However, it is RoHS non-compliant and lacks specified operating temperature and current rating documentation. Use only in applications where RoHS compliance is not mandated.

Q: What is the difference between TSM-114-02-F-DV and TSM-114-02-G-DV?

A: Both maintain identical electrical and mechanical specifications. The primary difference is contact finish: TSM-114-02-F-DV uses 3.00µin gold on mating contacts with tin post finish, while TSM-114-02-G-DV uses 10.0µin gold on both mating and post contacts. TSM-114-02-G-DV provides enhanced durability for high-cycle mating applications.

Q: What does the "-A" suffix indicate in Samtec part numbers?

A: The "-A" suffix denotes inclusion of a board guide feature, which provides mechanical alignment assistance during assembly. This is optional and does not affect electrical performance.

Q: Why do some TSM variants show 27 of 28 positions loaded?

A: TSM-114-02-L-DV-001 and TSM-114-02-L-DV-A-006 are configured with one position intentionally unloaded, typically for keying or specific application requirements. These parts maintain 28 position footprints but deliver 27 active contacts.

Q: Is the higher operating temperature range of Samtec parts a concern?

A: No. The Samtec TSM series operates from -55°C to 125°C, which encompasses the original M20-8761442P range of -40°C to 105°C. Extended temperature capability provides design margin without introducing compatibility issues.

Q: What packaging options are available?

A: Samtec TSM parts are supplied in tube packaging. Harwin M20-8761442P was supplied in bulk. Packaging does not affect electrical or mechanical performance and is determined by procurement and assembly requirements.

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