TMS-140-03-G-D-RA Equivalent & Substitute Parts

Part Overview

The TMS-140-03-G-D-RA is a 0.050" (1.27mm) micro header connector manufactured by Samtec Inc., designed for board-to-board applications. This through-hole, right-angle header features 80 positions across 2 rows with unshrouded design and push-pull fastening. The part maintains Active product status with full RoHS3 compliance and MSL Level 1 rating, making it suitable for applications requiring reliable interconnection in standard environmental conditions.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring functional interchangeability without design modification.

Substiute Parts

TMS-140-03-G-D-RA

Samtec Inc.In Stock: 1049TMS-140-03-G-D-RA Datasheet

Current PartRFQ

HTMS-140-03-G-D-RA

Samtec Inc.In Stock: 764HTMS-140-03-G-D-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMS-140-03-G-D-RA is determined by strict alignment of the following critical parameters:

• Mating pitch: 0.050" (1.27mm)
• Position count: 80 positions
• Row configuration: 2 rows
• Row spacing: 0.100" (2.54mm)
• Mounting orientation: Through hole, right angle
• Contact gender: Male pin
• Termination method: Solder
• Contact finish: Gold plating on mating surface
• Current capacity: 5A per contact
• Temperature range: -55°C ~ 125°C
• Compliance: RoHS3 compliant

The HTMS-140-03-G-D-RA meets all specified criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the TMS-140-03-G-D-RA and HTMS-140-03-G-D-RA maintain Active product status with identical electrical and mechanical specifications. Both parts carry ROHS3 compliance and MSL Level 1 rating, confirming suitability for standard manufacturing and storage conditions. The HTMS-140-03-G-D-RA represents a functionally equivalent alternative with 721 units in stock compared to 952 units of the primary part. Selection between these parts should be based on inventory availability and procurement lead time requirements, as all technical parameters align completely.

Frequently Asked Questions (FAQ)

Q: Can HTMS-140-03-G-D-RA be used as a direct replacement for TMS-140-03-G-D-RA?

A: Yes. Both parts share identical mating pitch (0.050"), position count (80), row configuration (2 rows), mounting type (through hole, right angle), contact specifications, and operating parameters. No design modification is required.

Q: Are there differences in insulation height between these parts?

A: The TMS-140-03-G-D-RA specifies 0.197" (5.00mm) insulation height while the HTMS-140-03-G-D-RA specifies 0.196" (4.98mm). This 0.02mm variance is within standard manufacturing tolerance and does not affect functional compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant with UL94 V-0 flammability rating and MSL Level 1 moisture sensitivity classification.

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

A: The TMS-140 and HTMS-140 are distinct product series from Samtec Inc. with different base product numbers. The HTMS-140-03-G-D-RA qualifies as a substitute based on matching all critical electrical and mechanical parameters.

Q: Are the contact materials identical?

A: Yes. Both parts use phosphor bronze contacts with gold plating. Mating surface finish is 10.0µin (0.25µm) gold, and post finish is 3.00µin (0.076µm) gold on both parts.