HTSW-138-08-S-D Equivalent & Substitute Parts

Part Overview

The HTSW-138-08-S-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This vertical header connector features 76 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, suitable for board-to-board or cable interconnections. The part is currently active in production with 912 units in stock. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

HTSW-138-08-S-D

Samtec Inc.In Stock: 1022HTSW-138-08-S-D Datasheet

Current PartRFQ

TSW-138-08-S-D

Samtec Inc.In Stock: 854TSW-138-08-S-D Datasheet

SimilarRFQ

TSW-138-08-S-D

Samtec Inc.In Stock: 854TSW-138-08-S-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HTSW-138-08-S-D is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Header with male pins
• Position Count & Row Configuration: 76 positions in 2 rows
• Pitch Specifications: 0.100" (2.54mm) mating pitch and row spacing
• Mounting & Termination: Through-hole solder termination
• Contact Material & Finish: Phosphor bronze with gold-plated mating surface and tin-plated posts
• Operating Temperature Range: -55°C to 125°C
• Compliance Standards: UL94 V-0 flammability rating and ROHS3 compliance

The TSW-138-08-S-D meets all critical electrical and mechanical parameters required for direct substitution. The primary difference lies in the insulation material composition: HTSW series uses Liquid Crystal Polymer (LCP) while TSW series uses Polybutylene Terephthalate (PBT). Both materials satisfy the same flammability and thermal requirements for this application class.

Parameter Comparison

Engineering Selection Recommendations

Both the HTSW-138-08-S-D and TSW-138-08-S-D are active production parts from Samtec Inc. with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following factors:

HTSW-138-08-S-D is the primary specification with Liquid Crystal Polymer insulation material and higher current inventory availability (912 units). This part is suitable for applications where LCP material properties are specified or preferred.

TSW-138-08-S-D provides an equivalent alternative with Polybutylene Terephthalate insulation material and MSL 1 rating. This part maintains identical electrical and mechanical performance across all critical parameters and is suitable for applications where PBT material properties are acceptable or where supply from the TSW series is advantageous.

Both parts share identical contact geometry, pitch specifications, temperature ratings, and compliance certifications, ensuring functional interchangeability in board-to-board and cable interconnection applications.

Frequently Asked Questions (FAQ)

Q: Are HTSW-138-08-S-D and TSW-138-08-S-D electrically interchangeable?

A: Yes. Both parts feature identical contact material (phosphor bronze), contact finish specifications (gold mating surface, tin posts), pitch spacing (0.100" / 2.54mm), position count (76 positions in 2 rows), and operating temperature range (-55°C to 125°C). Electrical performance is equivalent.

Q: What is the difference between LCP and PBT insulation materials in these connectors?

A: The HTSW series uses Liquid Crystal Polymer (LCP) insulation while the TSW series uses Polybutylene Terephthalate (PBT). Both materials meet UL94 V-0 flammability requirements and support the same operating temperature range. Material selection depends on specific application requirements and design specifications.

Q: Can I substitute TSW-138-08-S-D for HTSW-138-08-S-D in existing designs?

A: Substitution is mechanically and electrically feasible based on identical pitch, position count, contact configuration, and thermal ratings. However, design documentation should be reviewed to confirm that PBT insulation material is acceptable for the intended application, as the original specification calls for LCP.

Q: What does MSL 1 (Unlimited) mean for the TSW-138-08-S-D?

A: Moisture Sensitivity Level 1 indicates the lowest moisture sensitivity classification. This part has unlimited shelf life under normal storage conditions and does not require special moisture-controlled packaging or baking procedures prior to soldering.

Q: Are both parts RoHS compliant?

A: Yes. Both HTSW-138-08-S-D and TSW-138-08-S-D are ROHS3 compliant, meeting current lead-free and restricted substance requirements.

Q: What is the through-hole mounting footprint compatibility?

A: Both parts feature identical through-hole solder termination with matching contact post dimensions (0.200" / 5.08mm) and overall contact length (0.530" / 13.46mm). PCB footprints are directly compatible.