HTSW-108-24-L-S Equivalent & Substitute Parts

Part Overview

The HTSW-108-24-L-S is an 8-position vertical header connector manufactured by Samtec Inc., designed for through-hole mounting with 0.100" (2.54mm) pitch. This connector is classified as a rectangular connector for board-to-board or cable applications. The part is currently active in production and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part is unavailable or inventory constraints exist.

Key Parameters

Parameter	Value
Manufacturer Part Number	HTSW-108-24-L-S
Manufacturer	Samtec Inc.
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	8
Number of Rows	1
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Insulation Material	Liquid Crystal Polymer (LCP)
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the HTSW-108-24-L-S are identified based on the following critical parameters that determine functional equivalence:

Number of Positions and Rows: 8 positions, 1 row (exact match required)
Pitch - Mating: 0.100" (2.54mm) (exact match required)
Connector Type: Header with male pin contacts
Mounting Type: Through hole solder termination
Fastening Type: Push-Pull mechanism
Contact Finish: Gold-plated mating surface with tin-plated posts
Shrouding: Unshrouded configuration
Compliance: ROHS3 compliant, UL94 V-0 flammability rating

The substitute part A2-8PA-2.54DSA(71) from Hirose Electric Co Ltd meets these core electrical and mechanical criteria, enabling direct substitution in applications where connector footprint and contact arrangement are the primary design constraints.

Parameter Comparison

Parameter	HTSW-108-24-L-S (Samtec)	A2-8PA-2.54DSA(71) (Hirose)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	8	8
Number of Rows	1	1
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Tin	Tin
Contact Shape	Square	Square
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active
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)
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 85°C
Insulation Material	Liquid Crystal Polymer (LCP)	Polybutylene Terephthalate (PBT)
Insulation Color	Natural	Black
Contact Material	Phosphor Bronze	Brass
Contact Finish Thickness - Mating	10.0µin (0.25µm)	8.00µin (0.203µm)
Contact Finish Thickness - Post	Not specified	78.7µin (2.00µm)

Engineering Selection Recommendations

Both the HTSW-108-24-L-S and A2-8PA-2.54DSA(71) are active production parts with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following provided specifications:

HTSW-108-24-L-S (Samtec) is suitable for applications requiring the extended operating temperature range of -55°C to 125°C and LCP insulation material properties.

A2-8PA-2.54DSA(71) (Hirose) is suitable for applications operating within the -55°C to 85°C temperature range and where PBT insulation material is acceptable. This part offers higher post contact finish thickness (78.7µin vs. unspecified for the original part).

Both parts share identical pitch, position count, contact type, mounting method, and fastening mechanism, making them mechanically and electrically interchangeable for standard board-to-board or cable connection applications where the specified operating temperature and insulation material requirements are met.

Frequently Asked Questions (FAQ)

Q: Can A2-8PA-2.54DSA(71) be used as a direct replacement for HTSW-108-24-L-S?

A: Yes, for applications operating within -55°C to 85°C. Both connectors share identical pitch (2.54mm), position count (8), contact type (male pin), mounting method (through hole), and fastening type (push-pull). The primary difference is the maximum operating temperature and insulation material. Verify your application's temperature requirements before substitution.

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

A: The main differences are: operating temperature range (Samtec: -55°C to 125°C vs. Hirose: -55°C to 85°C), insulation material (Samtec: LCP vs. Hirose: PBT), contact material (Samtec: Phosphor Bronze vs. Hirose: Brass), and contact dimensions. All other electrical and mechanical parameters are equivalent.

Q: Are both parts RoHS compliant?

A: Yes, both HTSW-108-24-L-S and A2-8PA-2.54DSA(71) are ROHS3 compliant and carry UL94 V-0 flammability certification.

Q: What is the pitch specification for these connectors?

A: Both connectors have a mating pitch of 0.100" (2.54mm), which is the standard spacing between contact positions.

Q: Do these connectors have shrouding?

A: No, both connectors are unshrouded headers, meaning the contact pins are exposed without protective housing around the mating interface.

Q: What is the fastening mechanism?

A: Both connectors use a push-pull fastening type for secure mating and reliable connection retention.

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