TMS-108-01-S-S Equivalent & Substitute Parts

Part Overview

The TMS-108-01-S-S is an 8-position rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications. This unshrouded header features 0.050" (1.27mm) pitch male pins with gold-plated mating contacts and tin-plated posts. The connector operates across -55°C to 125°C and supports 5A per contact, making it suitable for general-purpose interconnect applications requiring reliable solder termination.

The part maintains Active product status with ROHS3 compliance and UL94 V-0 flammability rating. Identifying equivalent substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing revisions.

Key Parameters

Parameter	Value
Pitch - Mating	0.050" (1.27mm)
Number of Positions	8
Number of Rows	1
Connector Type	Header
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Operating Temperature	-55°C ~ 125°C
Current Rating	5A per Contact
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TMS-108-01-S-S is determined by strict equivalence across the following critical parameters:

Pitch - Mating: 0.050" (1.27mm) — determines mechanical and electrical compatibility with mating connectors
Number of Positions: 8 — defines circuit density and PCB footprint
Number of Rows: 1 — establishes connector geometry and mounting pattern
Connector Type: Header — specifies the functional role in board-to-board interconnection
Contact Type: Male Pin — ensures proper mating with female receptacles
Mounting Type: Through Hole — confirms PCB assembly method compatibility
Termination: Solder — validates assembly process compatibility
Contact Finish - Mating: Gold — ensures electrical performance and corrosion resistance
Contact Finish - Post: Tin — maintains solderability and thermal cycling reliability
Operating Temperature Range: -55°C ~ 125°C — defines environmental operating limits
Current Rating: 5A per Contact — establishes electrical load capacity
Material Flammability Rating: UL94 V-0 — confirms regulatory compliance for safety-critical applications
RoHS Status: ROHS3 Compliant — validates environmental and hazardous substance restrictions

Parameter Comparison

Parameter	TMS-108-01-S-S	HTMS-108-01-S-S
Manufacturer	Samtec Inc.	Samtec Inc.
Category	Rectangular Connectors	Rectangular Connectors
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Number of Positions	8	8
Number of Rows	1	1
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.120" (3.05mm)	0.120" (3.05mm)
Overall Contact Length	0.450" (11.43mm)	0.450" (11.43mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Current Rating (Amps)	5A per Contact	5A per Contact
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the TMS-108-01-S-S and HTMS-108-01-S-S maintain Active product status from Samtec Inc. and satisfy identical electrical, mechanical, and environmental specifications. Both parts are ROHS3 compliant and carry UL94 V-0 flammability certification, meeting regulatory requirements for industrial and consumer applications.

Selection between these parts should be based on supply chain availability and inventory status. Both connectors are functionally interchangeable for applications requiring 8-position, 0.050" pitch through-hole headers with gold-plated mating contacts and tin-plated posts operating within the -55°C to 125°C temperature range at 5A per contact.

Frequently Asked Questions (FAQ)

Q: Are TMS-108-01-S-S and HTMS-108-01-S-S mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.050"), position count (8), row configuration (1), contact geometry, and mounting footprint. PCB layouts designed for one part accommodate the other without modification.

Q: Can these connectors be used interchangeably in high-temperature applications?

A: Yes. Both parts operate across -55°C to 125°C. The Liquid Crystal Polymer insulation material and phosphor bronze contacts maintain performance throughout this range.

Q: What is the difference between the TMS and HTMS series designations?

A: The series designation reflects internal Samtec product line organization. Both TMS-108-01-S-S and HTMS-108-01-S-S are equivalent 8-position headers with identical electrical and mechanical characteristics.

Q: Are both parts suitable for automated assembly?

A: Yes. Both connectors feature through-hole solder termination compatible with standard wave soldering and selective soldering processes. Moisture Sensitivity Level 1 (Unlimited) eliminates bake-out requirements.

Q: Do these connectors require any special handling or storage considerations?

A: No special handling is required. MSL 1 rating indicates unlimited shelf life without moisture control measures. Standard ESD precautions apply during handling.

Q: Can these headers be used with standard 0.050" pitch receptacles?

A: Yes. The 0.050" (1.27mm) mating pitch is a standard specification. These headers mate with any 0.050" pitch female receptacle or socket connector.

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