M20-8763546P Equivalent & Substitute Parts

Part Overview

The M20-8763546P is a rectangular connector header manufactured by Harwin Inc., designed for surface mount applications with 70 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and design updates. The connector features a cuttable header design with unshrouded configuration, suitable for board-to-board or cable applications with solder termination.

Key Parameters

Parameter	M20-8763546P Specification
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	70
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the M20-8763546P is determined by strict adherence to the following critical parameters:

Core Compatibility Parameters:

Number of Positions: 70
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Contact Type: Male Pin
Mounting Type: Surface Mount
Termination: Solder
Fastening Type: Push-Pull
Contact Shape: Square
Style: Board to Board or Cable
Shrouding: Unshrouded
Material Flammability Rating: UL94 V-0
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories based on connector type variation:

Category 1: Cuttable Header Design (Direct mechanical equivalents)

TSM-135-02-F-DV (Samtec Inc.)
TSM-135-02-F-DV-A (Samtec Inc.)
TSM-135-02-FM-DV (Samtec Inc.)
TSM-135-02-G-DV (Samtec Inc.)
TSM-135-02-G-DV-A (Samtec Inc.)
TSM-135-02-H-DV (Samtec Inc.)
TSM-135-02-L-DV (Samtec Inc.)
TSM-135-02-LM-DV (Samtec Inc.)
TSM-135-02-S-DV-LC (Samtec Inc.)

Category 2: Breakaway Header Design (Mechanical variant)

GBC35DABN-M30 (Sullins Connector Solutions)

All substitute parts maintain the same electrical and mechanical interface specifications required for direct replacement in 70-position, 2.54mm pitch applications.

Parameter Comparison

Parameter	M20-8763546P	GBC35DABN-M30	TSM-135-02-F-DV	TSM-135-02-F-DV-A	TSM-135-02-G-DV	TSM-135-02-G-DV-A	TSM-135-02-H-DV	TSM-135-02-L-DV	TSM-135-02-LM-DV	TSM-135-02-S-DV-LC
Manufacturer	Harwin Inc.	Sullins Connector Solutions	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	70	70	70	70	70	70	70	70	70	70
Number of Rows	2	2	2	2	2	2	2	2	2	2
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)
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)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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 Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA9T), Nylon 9T	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	-65°C ~ 150°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	-55°C ~ 125°C
Current Rating	3A per Contact	3A	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
Voltage Rating	250V	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Contact Finish - Mating	Tin	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
Connector Type	Header, Cuttable	Header, Breakaway	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable

Engineering Selection Recommendations

All listed substitute parts maintain active product status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and regulatory alignment. The Samtec TSM-135 series variants provide the closest functional equivalence to the M20-8763546P, with cuttable header design matching the original specification. These parts are manufactured by an established connector supplier with consistent quality standards.

The GBC35DABN-M30 from Sullins Connector Solutions offers an alternative with breakaway header design rather than cuttable configuration. This variant maintains all critical electrical and mechanical parameters but differs in connector type, which may affect assembly and customization workflows.

Contact finish differences exist across substitute options. The original M20-8763546P features tin plating on mating contacts, while all active substitutes employ gold plating. This change improves corrosion resistance and contact reliability in demanding environments. Insulation material varies between polyamide (PA6T/PA9T) in the original and Sullins part versus liquid crystal polymer (LCP) in Samtec variants, with LCP offering superior thermal and dimensional stability.

Operating temperature ranges expand in substitute parts, with Samtec variants rated to -55°C ~ 125°C and Sullins to -65°C ~ 150°C, compared to the original -40°C ~ 105°C specification. This provides additional thermal margin for applications requiring extended operating ranges.

Frequently Asked Questions (FAQ)

Q: Can TSM-135 series connectors directly replace the M20-8763546P in existing designs?

A: Yes, TSM-135 cuttable variants maintain identical pitch, position count, row spacing, and mounting configuration. The primary differences are contact finish (gold vs. tin), insulation material (LCP vs. polyamide), and expanded operating temperature range. These changes are compatible with the original electrical interface.

Q: What is the difference between cuttable and breakaway header designs?

A: Cuttable headers allow individual pins to be separated by cutting the insulation strip between positions, enabling custom configurations. Breakaway headers feature pre-scored sections that separate cleanly without cutting. The GBC35DABN-M30 uses breakaway design, while TSM-135 variants and the original M20-8763546P use cuttable design.

Q: Why do substitute parts use gold plating instead of tin?

A: Gold plating provides superior corrosion resistance, lower contact resistance, and improved reliability in high-reliability applications. This is a material upgrade that enhances connector performance without affecting electrical compatibility.

Q: Are there packaging differences between substitute options?

A: Yes. The M20-8763546P was supplied in bulk packaging. Samtec TSM-135 variants are available in tube packaging, while GBC35DABN-M30 is supplied in bulk. Packaging affects handling and storage but does not impact electrical or mechanical function.

Q: Which substitute part offers the widest operating temperature range?

A: The GBC35DABN-M30 from Sullins Connector Solutions is rated -65°C ~ 150°C, providing the broadest temperature envelope. Samtec TSM-135 variants are rated -55°C ~ 125°C. Both exceed the original M20-8763546P specification of -40°C ~ 105°C.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity level, matching the original specification. All are REACH unaffected and carry EAR99 ECCN classification.

Q: What distinguishes TSM-135-02-F-DV-A and TSM-135-02-G-DV-A from their base variants?

A: The "-A" suffix indicates the inclusion of a board guide feature, which provides mechanical alignment assistance during mating. This is a design enhancement that does not affect electrical compatibility or core specifications.

Q: Can I use TSM-135-02-S-DV-LC as a direct replacement?

A: Yes. The TSM-135-02-S-DV-LC includes a board lock feature (indicated by "-LC" suffix) in addition to standard specifications. This provides enhanced mechanical retention without affecting electrical interface compatibility.

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