TSM-105-01-TM-SV Equivalent & Substitute Parts

Part Overview

The TSM-105-01-TM-SV is a surface mount rectangular connector header manufactured by Samtec Inc. This 5-position, 0.100" (2.54mm) pitch connector is designed for board-to-board or cable applications with solder termination. The part is currently active in production with 902 units in stock. Equivalent and substitute parts are identified to provide design flexibility, ensure supply chain continuity, and accommodate specific application requirements such as contact material preferences or thermal operating ranges.

Substiute Parts

TSM-105-01-TM-SV

Samtec Inc.In Stock: 975TSM-105-01-TM-SV Datasheet

Current PartRFQ

M20-8770542

Harwin Inc.In Stock: 2951M20-8770542 Datasheet

MFR RecommendedRFQ

M20-8770546

Harwin Inc.In Stock: 56978M20-8770546 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TSM-105-01-TM-SV are qualified based on the following critical parameters that determine functional interchangeability:

• Connector Type & Contact Configuration: Header, cuttable design with male pin contacts
• Pitch and Position Count: 0.100" (2.54mm) mating pitch with 5 positions in a single row
• Mounting Technology: Surface mount with solder termination
• Mechanical Compatibility: Square contact shape and 0.100" insulation height for board-to-board or cable mating
• Environmental Compliance: ROHS3 compliance, UL94 V-0 flammability rating, and MSL 1 rating

The identified substitutes (M20-8770542 and M20-8770546 from Harwin Inc.) meet these core requirements. Variations in contact material (Brass vs. Phosphor Bronze), contact finish (Gold or Tin), insulation material (Polyamide PA6T vs. LCP), and operating temperature range (-40°C ~ 105°C vs. -55°C ~ 105°C) are secondary parameters that do not prevent substitution but may influence selection based on specific application needs.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and comply with ROHS3 and UL94 V-0 requirements, ensuring regulatory compliance across applications. The TSM-105-01-TM-SV offers the widest operating temperature range (-55°C ~ 105°C), making it suitable for extended low-temperature environments. The Harwin substitutes (M20-8770542 and M20-8770546) operate within -40°C ~ 105°C and provide specified current ratings of 3A per contact with defined mating stacking heights.

Selection between M20-8770542 and M20-8770546 depends on contact finish requirements: M20-8770542 features gold-plated mating contacts for enhanced corrosion resistance, while M20-8770546 uses tin finish matching the original part's post finish. Both Harwin parts use brass contact material and polyamide insulation instead of the original phosphor bronze and LCP, representing acceptable material substitutions within the rectangular connector category.

Frequently Asked Questions (FAQ)

Q: Can M20-8770542 and M20-8770546 be used interchangeably with TSM-105-01-TM-SV?

A: Yes, both Harwin parts are functionally equivalent substitutes. They share identical connector type, pitch, position count, mounting method, and termination. The primary differences are contact material, contact finish, insulation material, and operating temperature range. Selection depends on application-specific requirements for contact finish and thermal environment.

Q: What is the significance of the contact finish difference between M20-8770542 (gold) and M20-8770546 (tin)?

A: Contact finish affects corrosion resistance and mating durability. Gold plating (M20-8770542) provides superior corrosion resistance in harsh environments, while tin finish (M20-8770546) is suitable for standard applications and matches the original part's post finish specification.

Q: Does the insulation material change from LCP to polyamide affect mechanical performance?

A: Both LCP and polyamide (PA6T) insulation materials meet UL94 V-0 flammability requirements and MSL 1 moisture sensitivity specifications. Polyamide offers different mechanical and thermal characteristics but remains suitable for board-to-board and cable connector applications within the specified operating temperature range.

Q: Why does the TSM-105-01-TM-SV have a lower minimum operating temperature (-55°C) compared to the Harwin substitutes (-40°C)?

A: This reflects material and design differences between manufacturers. Applications requiring operation below -40°C must use the original TSM-105-01-TM-SV. For applications within -40°C ~ 105°C, the Harwin substitutes are fully qualified.

Q: Are the mated stacking heights specified for the Harwin parts critical for substitution?

A: Mated stacking heights define the distance between mating surfaces and are relevant for board-to-board spacing calculations. The TSM-105-01-TM-SV does not specify these values, so design verification is necessary if stacking height is a constraint in your application.

Q: Do all three parts have the same packaging format?

A: No. The TSM-105-01-TM-SV is supplied in tube packaging, while both Harwin substitutes (M20-8770542 and M20-8770546) are supplied in bulk packaging. This affects handling, storage, and procurement processes but does not impact electrical or mechanical compatibility.