HTSW-105-24-L-S Equivalent & Substitute Parts

Part Overview

The HTSW-105-24-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 5-position, single-row header operates at 0.100" (2.54mm) pitch and is rated for operating temperatures from -55°C to 125°C. The part is currently in active production status with 1020 units available in stock. Alternative equivalent parts may be required due to supply constraints, design revisions, or specific application requirements where substitute connectors meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	5
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Insulation Material	Liquid Crystal Polymer (LCP)
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The A2-5PA-2.54DSA(71) manufactured by Hirose Electric Co Ltd qualifies as a substitute for the HTSW-105-24-L-S based on the following critical parameters:

Identical connector type (Header) and contact type (Male Pin)
Matching pitch specification at 0.100" (2.54mm)
Identical number of positions (5) and row configuration (1 row)
Equivalent mounting method (Through Hole) and termination (Solder)
Matching fastening type (Push-Pull)
Identical shrouding classification (Unshrouded)
Both parts maintain UL94 V-0 flammability rating
Both parts are ROHS3 compliant
Both parts are in active production status

Substitution is valid where the operating temperature range of the substitute part (-55°C ~ 85°C) meets or exceeds the application requirements, and where the mechanical envelope accommodates the dimensional differences in contact lengths and overall heights.

Parameter Comparison

Parameter	HTSW-105-24-L-S (Samtec)	A2-5PA-2.54DSA(71) (Hirose)
Manufacturer	Samtec Inc.	Hirose Electric Co Ltd
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	5	5
Number of Rows	1	1
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.265" (6.73mm)	0.236" (6.00mm)
Contact Length - Post	0.115" (2.92mm)	0.118" (3.00mm)
Overall Contact Length	0.480" (12.19mm)	0.454" (11.54mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Material	Phosphor Bronze	Brass
Insulation Material	Liquid Crystal Polymer (LCP)	Polybutylene Terephthalate (PBT)
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the HTSW-105-24-L-S and A2-5PA-2.54DSA(71) are active production parts with ROHS3 compliance and UL94 V-0 flammability certification, making them suitable for equivalent applications. Selection between these parts should be based on:

Operating temperature requirements: The HTSW-105-24-L-S supports operation to 125°C, while the A2-5PA-2.54DSA(71) is rated to 85°C. Applications requiring sustained operation above 85°C require the Samtec part.
Mechanical envelope constraints: The overall contact length differs by 0.026" (0.65mm), with the Samtec part being longer. PCB layout and mating connector depth must accommodate these dimensional variations.
Insulation material compatibility: The HTSW-105-24-L-S uses LCP insulation while the A2-5PA-2.54DSA(71) uses PBT. Both materials meet UL94 V-0 requirements but may have different chemical resistance profiles for specific applications.
Contact material differences: Phosphor Bronze (Samtec) versus Brass (Hirose) provide different mechanical and electrical properties. Both are suitable for standard signal and power applications at the specified current ratings.

Frequently Asked Questions (FAQ)

Q: Can the A2-5PA-2.54DSA(71) be used as a direct replacement for the HTSW-105-24-L-S in all applications?

A: The A2-5PA-2.54DSA(71) is functionally equivalent for applications operating at or below 85°C. Applications requiring operation above 85°C must use the HTSW-105-24-L-S due to its extended temperature rating to 125°C. Mechanical envelope differences in contact length must be evaluated for specific PCB layouts.

Q: What are the critical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: connector type (Header), contact type (Male Pin), pitch (0.100"/2.54mm), position count (5), row configuration (1 row), mounting method (Through Hole), termination (Solder), and fastening type (Push-Pull). Both parts meet these criteria.

Q: Are there compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and carry UL94 V-0 flammability ratings. Both are in active production status. No compliance or certification barriers exist for substitution within the specified operating parameters.

Q: How do the dimensional differences affect PCB design?

A: The overall contact length differs by 0.026" (0.65mm), with the Samtec HTSW-105-24-L-S being longer. Mating connector depth and PCB clearances must accommodate this variation. Contact length post dimensions are nearly identical (0.115" vs 0.118"), minimizing impact on solder joint design.

Q: What is the inventory status for each part?

A: The HTSW-105-24-L-S has 1020 units in stock. The A2-5PA-2.54DSA(71) has 2621 units in stock. Both parts are readily available for immediate procurement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message