TMS-118-02-S-S-RA Equivalent & Substitute Parts

Part Overview

The TMS-118-02-S-S-RA is a rectangular connector header manufactured by Samtec Inc., designed for board-to-board applications. This through-hole, right-angle header features 18 positions at 0.050" (1.27mm) pitch with male pin contacts and solder termination. The connector is actively produced and widely stocked, with 1070 units available in inventory. Alternative part numbers may be required due to supply chain constraints, design revisions, or specific application requirements where equivalent electrical and mechanical characteristics are acceptable.

Substiute Parts

TMS-118-02-S-S-RA

Samtec Inc.In Stock: 1162TMS-118-02-S-S-RA Datasheet

Current PartRFQ

HTMS-118-02-S-S-RA

Samtec Inc.In Stock: 1221HTMS-118-02-S-S-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMS-118-02-S-S-RA is determined by strict equivalence across the following critical parameters:

• Pitch - Mating: 0.050" (1.27mm)
• Number of Positions: 18
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Contact Length - Mating: 0.100" (2.54mm)
• Contact Length - Post: 0.140" (4.66mm)
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• Operating Temperature Range: -55°C ~ 125°C
• Current Rating: 5A per Contact
• Contact Finish - Mating: Gold
• Contact Finish - Post: Tin
• RoHS Status: ROHS3 Compliant

The HTMS-118-02-S-S-RA qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Minor variations in insulation height (0.096" vs. 0.098") fall within acceptable tolerances for board-to-board connector applications and do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the TMS-118-02-S-S-RA and HTMS-118-02-S-S-RA are active products manufactured by Samtec Inc. with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on availability and inventory status. The HTMS-118-02-S-S-RA currently maintains higher stock levels (1115 units) compared to the TMS-118-02-S-S-RA (1070 units), making it suitable for immediate procurement when supply continuity is a consideration. Both connectors meet identical electrical performance specifications and mechanical requirements for board-to-board applications within the specified operating temperature range of -55°C to 125°C.

Frequently Asked Questions (FAQ)

Q: Can the HTMS-118-02-S-S-RA be used as a direct replacement for the TMS-118-02-S-S-RA?

A: Yes. Both connectors share identical electrical and mechanical specifications across all critical parameters including pitch, position count, contact materials, termination method, and operating temperature range. The minor difference in insulation height (0.096" vs. 0.098") is within acceptable tolerance for board-to-board connector applications.

Q: Are there any compatibility concerns with PCB layout or mating connectors?

A: No. The identical pitch (0.050"), position count (18), and contact geometry ensure full compatibility with existing PCB layouts and mating connectors designed for either part number.

Q: Do both parts meet the same compliance and certification standards?

A: Yes. Both the TMS-118-02-S-S-RA and HTMS-118-02-S-S-RA are ROHS3 compliant, carry UL94 V-0 flammability certification, and maintain MSL 1 (Unlimited) moisture sensitivity rating.

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

A: The series designation reflects the product line within Samtec's connector portfolio. Both series employ identical contact materials (Phosphor Bronze), insulation materials (LCP), and electrical performance characteristics for this 0.050" pitch header configuration.

Q: Are solder joint reliability and thermal performance equivalent?

A: Yes. Both connectors use identical contact materials, contact finishes, and termination methods. The 5A per contact current rating and operating temperature range of -55°C to 125°C apply equally to both part numbers.