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

Part Overview

The HTST-125-01-S-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 push-pull fastening and shrouded 4-wall construction. The part is currently active in production with 1069 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the core connector specifications, enabling direct replacement in compatible applications.

Substiute Parts

HTST-125-01-S-DV-TR

Samtec Inc.In Stock: 1126HTST-125-01-S-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-S-DV-TR are identified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (50)
• Number of rows (2)
• Pitch - mating (0.100" / 2.54mm)
• Row spacing - mating (0.100" / 2.54mm)
• Contact finish - mating (Gold)
• Material flammability rating (UL94 V-0)

Mechanical Compatibility Parameters:

• Mounting type (Surface Mount)
• Shrouding configuration (Shrouded - 4 Wall)
• Fastening type (Push-Pull)
• Termination method (Solder)

The substitute part N2550-6V0C-RB-WG (3M) meets all critical electrical and mechanical parameters, enabling direct substitution in applications requiring a 50-position, 2.54mm pitch surface mount header with push-pull fastening and gold-plated mating contacts.

Parameter Comparison

Engineering Selection Recommendations

Both the HTST-125-01-S-DV-TR and N2550-6V0C-RB-WG are active production parts with UL94 V-0 flammability ratings and RoHS compliance. Selection between these parts should be based on the following provided specifications:

Current Rating Consideration: The HTST-125-01-S-DV-TR supports 3.4A per contact, while the N2550-6V0C-RB-WG supports 1.75A per contact. Applications requiring higher current capacity per contact should specify the Samtec part.

Operating Temperature Range: The HTST-125-01-S-DV-TR operates across -55°C to 125°C, while the N2550-6V0C-RB-WG operates across -55°C to 105°C. Applications requiring operation above 105°C must use the Samtec part.

Mechanical Dimensions: Minor differences exist in contact length (0.250" vs 0.243") and insulation height (0.350" vs 0.390"). PCB layout and mating connector clearances must accommodate these variations.

Packaging: The 3M part is supplied in Cut Tape (CT) packaging, which may influence procurement and assembly workflows.

Both parts share identical pitch, row configuration, shrouding, fastening mechanism, and gold-plated mating contact finish, ensuring mechanical and electrical compatibility in standard applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the N2550-6V0C-RB-WG directly replace the HTST-125-01-S-DV-TR in all applications?

A: Direct replacement is possible only when the application does not exceed 1.75A per contact and operates within the -55°C to 105°C temperature range. Applications requiring higher current capacity or extended temperature operation above 105°C must use the HTST-125-01-S-DV-TR.

Q: What are the key differences between these two 50-position headers?

A: The primary differences are current rating (3.4A vs 1.75A per contact), maximum operating temperature (125°C vs 105°C), contact material (Phosphor Bronze vs Copper Alloy), insulation material (LCP vs PCT Glass Filled), and physical dimensions (contact length and insulation height). All other electrical and mechanical parameters are equivalent.

Q: Are both parts RoHS compliant?

A: Yes. The HTST-125-01-S-DV-TR is ROHS3 compliant, and the N2550-6V0C-RB-WG is RoHS compliant. Both meet applicable RoHS requirements.

Q: Do these connectors have the same mating interface?

A: Yes. Both connectors feature identical 0.100" (2.54mm) pitch, 2-row configuration, square contact shape, gold-plated mating contacts, and push-pull fastening. Mating connectors designed for one part will mate with the other.

Q: What is the significance of the shrouded 4-wall construction?

A: The shrouded 4-wall design provides mechanical protection and alignment during mating. Both parts incorporate this feature, ensuring consistent connector engagement and contact alignment.

Q: How do the insulation materials differ?

A: The HTST-125-01-S-DV-TR uses Liquid Crystal Polymer (LCP), while the N2550-6V0C-RB-WG uses Polycyclohexylenedimethylene Terephthalate (PCT) with glass filling. Both materials achieve UL94 V-0 flammability ratings and are suitable for surface mount applications.

Q: What packaging options are available?

A: The N2550-6V0C-RB-WG is supplied in Cut Tape (CT) packaging. Packaging information for the HTST-125-01-S-DV-TR is not specified in the provided data.