HTSW-124-25-G-D Equivalent & Substitute Parts

Part Overview

The HTSW-124-25-G-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 48-position, 2-row connector operates across the industrial temperature range of -55°C to 125°C and is compliant with RoHS3 standards. The part is currently active in production with 867 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector interface, allowing for design flexibility and supply chain alternatives.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	48
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The TSW-124-25-G-D qualifies as a direct substitute based on the following critical parameters:

Identical pitch spacing: 0.100" (2.54mm) mating pitch and row spacing
Identical position count: 48 positions in 2-row configuration
Identical contact type: Male pin, square contact shape
Identical mounting and termination: Through-hole solder termination
Identical operating temperature range: -55°C to 125°C
Identical contact material and finish specifications: Phosphor bronze with gold plating (10.0µin mating, 3.00µin post)
Identical flammability rating: UL94 V-0
Identical RoHS compliance: ROHS3 Compliant

The primary difference between these parts is the insulation material (LCP vs. PBT) and insulation color, which do not affect electrical or mechanical compatibility in standard board-to-board applications.

Parameter Comparison

Parameter	HTSW-124-25-G-D	TSW-124-25-G-D
Manufacturer	Samtec Inc.	Samtec Inc.
Series	HTSW	TSW
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	48	48
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.320" (8.13mm)	0.320" (8.13mm)
Contact Length - Post	0.210" (5.33mm)	0.210" (5.33mm)
Overall Contact Length	0.630" (16.00mm)	0.630" (16.00mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	10.0µin (0.25µm)
Contact Finish - Post	Gold	Gold
Contact Finish Thickness - Post	3.00µin (0.076µm)	3.00µin (0.076µm)
Contact Material	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Polybutylene Terephthalate (PBT)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°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-124-25-G-D and TSW-124-25-G-D are active production parts from Samtec Inc. with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on:

Supply availability: HTSW-124-25-G-D has 867 units in stock; TSW-124-25-G-D has 773 units in stock
Insulation material preference: LCP (HTSW series) offers superior dimensional stability and lower moisture absorption; PBT (TSW series) provides cost efficiency
Insulation color requirement: Natural (HTSW) or Black (TSW)
Moisture sensitivity: HTSW series is not applicable for MSL; TSW series is MSL 1 (Unlimited)

Both parts maintain identical contact geometry, pitch spacing, and temperature performance, ensuring direct functional interchangeability in board-to-board connector applications.

Frequently Asked Questions (FAQ)

Q: Can TSW-124-25-G-D be used as a direct replacement for HTSW-124-25-G-D?

A: Yes. Both parts share identical mating pitch (0.100"), position count (48), row configuration (2 rows), contact type (male pin), mounting method (through-hole), and operating temperature range (-55°C to 125°C). The insulation material difference (LCP vs. PBT) does not affect electrical or mechanical compatibility.

Q: What is the significance of the insulation material difference?

A: LCP (Liquid Crystal Polymer) in the HTSW series provides superior dimensional stability and lower moisture absorption compared to PBT (Polybutylene Terephthalate) in the TSW series. Both materials meet UL94 V-0 flammability requirements. Material selection depends on application-specific environmental and dimensional tolerance requirements.

Q: Are the contact specifications identical between these parts?

A: Yes. Both parts feature phosphor bronze contacts with identical gold plating thickness (10.0µin on mating surface, 3.00µin on post), contact length (0.630" overall), and square contact shape.

Q: What is the difference in moisture sensitivity levels?

A: The HTSW-124-25-G-D has no applicable MSL rating, while the TSW-124-25-G-D is rated MSL 1 (Unlimited). This reflects the moisture absorption characteristics of the respective insulation materials but does not affect functional compatibility in standard applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both HTSW-124-25-G-D and TSW-124-25-G-D are ROHS3 Compliant and carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

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