HTST-125-01-L-DV-TR Equivalent & Substitute Parts

Part Overview

The HTST-125-01-L-DV-TR is a surface mount rectangular connector header manufactured by Samtec Inc. in the Flex Stack series. This 50-position, 2-row connector with 0.100" (2.54mm) pitch is designed for board-to-cable/wire applications with shrouded 4-wall construction and push-pull fastening. The part is currently active in production with 887 units in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component flexibility within specified electrical and mechanical parameters.

Substiute Parts

HTST-125-01-L-DV-TR

Samtec Inc.In Stock: 926HTST-125-01-L-DV-TR Datasheet

Current PartRFQ

N2550-6V0C-RB-WG

3MIn Stock: 1475N2550-6V0C-RB-WG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HTST-125-01-L-DV-TR are identified based on strict alignment with the following critical parameters:

• Connector type (Header) and contact type (Male Pin)
• Position count (50) and row configuration (2 rows)
• Mating pitch (0.100" / 2.54mm) and row spacing (0.100" / 2.54mm)
• Mounting technology (Surface Mount)
• Shrouding configuration (Shrouded - 4 Wall)
• Fastening mechanism (Push-Pull)
• Termination method (Solder)
• Flammability compliance (UL94 V-0)
• RoHS compliance status

The substitute part N2550-6V0C-RB-WG from 3M meets these core mechanical and electrical compatibility criteria, enabling direct functional substitution in applications where the specified parameters are required.

Parameter Comparison

Engineering Selection Recommendations

Both the HTST-125-01-L-DV-TR and N2550-6V0C-RB-WG are active production parts with UL94 V-0 flammability compliance and RoHS compliance status, making them suitable for equivalent substitution in applications where the specified mechanical and electrical parameters are met.

The HTST-125-01-L-DV-TR supports an operating temperature range of -55°C to 125°C with a current rating of 3.4A per contact. The N2550-6V0C-RB-WG operates within -55°C to 105°C with a current rating of 1.75A per contact. Selection between these parts should be based on application-specific requirements for maximum operating temperature and per-contact current capacity.

Minor dimensional variations exist between the parts: the HTST-125-01-L-DV-TR has a mating contact length of 0.250" (6.35mm) and insulation height of 0.350" (8.89mm), while the N2550-6V0C-RB-WG has a mating contact length of 0.243" (6.17mm) and insulation height of 0.390" (9.91mm). These differences may affect mechanical fit in space-constrained applications.

Packaging format differs between the two parts: the HTST-125-01-L-DV-TR is supplied in Tape & Reel format, while the N2550-6V0C-RB-WG is supplied in Cut Tape format. This distinction affects procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the N2550-6V0C-RB-WG be used as a direct replacement for the HTST-125-01-L-DV-TR?

A: The N2550-6V0C-RB-WG meets the core mechanical and electrical compatibility criteria for substitution, including connector type, position count, pitch, mounting technology, shrouding, and fastening mechanism. However, application-specific requirements for operating temperature range and per-contact current capacity must be verified before substitution.

Q: What are the key differences between these two parts?

A: The primary differences are operating temperature range (HTST-125-01-L-DV-TR: -55°C to 125°C vs. N2550-6V0C-RB-WG: -55°C to 105°C), per-contact current rating (3.4A vs. 1.75A), contact mating length (0.250" vs. 0.243"), insulation height (0.350" vs. 0.390"), contact material (Phosphor Bronze vs. Copper Alloy), insulation material (LCP vs. PCT Glass Filled), and packaging format (Tape & Reel vs. Cut Tape).

Q: Are both parts RoHS compliant?

A: Yes, both parts are RoHS compliant. The HTST-125-01-L-DV-TR is ROHS3 compliant, and the N2550-6V0C-RB-WG is RoHS compliant.

Q: What is the impact of different packaging formats on component selection?

A: The HTST-125-01-L-DV-TR is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The N2550-6V0C-RB-WG is supplied in Cut Tape (CT) format, which may require different handling and feeding equipment. Packaging format selection depends on assembly line capabilities and production volume requirements.

Q: How do the insulation materials differ between these parts?

A: The HTST-125-01-L-DV-TR uses Liquid Crystal Polymer (LCP) insulation, while the N2550-6V0C-RB-WG uses Polycyclohexylenedimethylene Terephthalate (PCT) with glass filling. Both materials meet UL94 V-0 flammability requirements. Material selection may affect mechanical properties and thermal performance in specific applications.

Q: What should be considered when substituting based on current rating differences?

A: The HTST-125-01-L-DV-TR supports 3.4A per contact, while the N2550-6V0C-RB-WG supports 1.75A per contact. Applications requiring current levels above 1.75A per contact are not suitable for the N2550-6V0C-RB-WG. Circuit design and thermal analysis must confirm that the lower current rating does not compromise system performance.