TSM-105-01-S-SV-A Surface Mount Header Connector - Equivalent & Substitute Parts

Part Overview

The TSM-105-01-S-SV-A is a 5-position surface mount header connector manufactured by Samtec Inc., designed for board-to-board or cable interconnection applications. This connector features a 0.100" (2.54mm) pitch, unshrouded design, and gold-plated mating contacts with tin-plated posts. The part is active in production and fully RoHS3 compliant with UL94 V-0 flammability rating.

Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility permits selection from multiple qualified suppliers while maintaining electrical and mechanical compatibility.

Substiute Parts

TSM-105-01-S-SV-A

Samtec Inc.In Stock: 1091TSM-105-01-S-SV-A Datasheet

Current PartRFQ

0878980552

MolexIn Stock: 101580878980552 Datasheet

SimilarRFQ

M20-8770542

Harwin Inc.In Stock: 2951M20-8770542 Datasheet

SimilarRFQ

M20-8770546

Harwin Inc.In Stock: 56978M20-8770546 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSM-105-01-S-SV-A is determined by the following critical parameters that must remain constant across all equivalent parts:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 5
• Number of Rows: 1
• Contact Type: Male Pin
• Mounting Type: Surface Mount
• Termination: Solder
• Fastening Type: Push-Pull
• Style: Board to Board or Cable
• Shrouding: Unshrouded
• Contact Shape: Square
• Insulation Color: Black
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The three substitute parts identified—0878980552 (Molex), M20-8770542 (Harwin), and M20-8770546 (Harwin)—satisfy all critical substitution criteria. Variations in contact material, insulation material composition, contact finish thickness specifications, and packaging format do not preclude functional equivalence within the defined parameter set.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain active product status and full RoHS3 compliance with UL94 V-0 flammability certification, meeting the regulatory and compliance requirements of the primary part.

0878980552 (Molex C-Grid SL 87898): This part is functionally equivalent with identical mating contact length and gold plating specification. The insulation height variance of 0.002" (0.04mm) and polyamide-based insulation material do not affect mechanical or electrical compatibility. Tape & Reel packaging is suitable for automated assembly processes.

M20-8770542 (Harwin M20): This cuttable header maintains gold-plated mating contacts with a mating contact length of 0.228" (5.80mm), representing a 0.002" (0.04mm) reduction from the primary part. Brass contact material and polyamide insulation are functionally compatible. Bulk packaging accommodates manual or semi-automated assembly.

M20-8770546 (Harwin M20): This variant differs from M20-8770542 only in mating contact finish, specified as tin rather than gold. All other electrical and mechanical parameters remain identical. Bulk packaging format is consistent with M20-8770542.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0878980552 be used as a direct replacement for the TSM-105-01-S-SV-A?

A: Yes. Both parts share identical pitch (0.100"), position count (5), row configuration (1), contact type (male pin), mounting method (surface mount), and termination (solder). The 0.002" insulation height difference and polyamide insulation material do not affect functional compatibility in board-to-board or cable applications.

Q: What is the difference between the two Harwin M20 variants?

A: M20-8770542 features gold-plated mating contacts, while M20-8770546 features tin-plated mating contacts. All other parameters, including contact material (brass), insulation material (polyamide PA6T), and mechanical dimensions, are identical. Selection depends on application requirements for contact finish.

Q: Does the operating temperature range difference affect substitution eligibility?

A: The TSM-105-01-S-SV-A operates from -55°C to 125°C, while the Harwin parts operate from -40°C to 105°C. For applications requiring operation below -40°C or above 105°C, the Samtec part is required. For applications within the -40°C to 105°C range, the Harwin parts are suitable.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. The TSM-105-01-S-SV-A is supplied in Tube packaging. The Molex 0878980552 is supplied in Tape & Reel format, suitable for automated pick-and-place assembly. The Harwin parts (M20-8770542 and M20-8770546) are supplied in Bulk format. Packaging selection should align with assembly process requirements and inventory management practices.

Q: What contact material differences exist among these parts?

A: The TSM-105-01-S-SV-A uses phosphor bronze contacts, the Molex part uses copper alloy, and both Harwin parts use brass. All materials are compatible with the specified contact finishes and do not affect electrical performance in standard applications.