TSW-140-07-S-S Equivalent & Substitute Parts

Part Overview

The TSW-140-07-S-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This connector features 40 positions with 0.100" (2.54mm) pitch spacing, unshrouded design, and solder termination. The part maintains active product status with full inventory availability.

Substitute parts become necessary when the primary part reaches end-of-life status, supply constraints occur, or design requirements permit alternative connector architectures that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	TSW-140-07-S-S
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	40
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Shrouding	Unshrouded
Contact Finish - Mating	Gold
Insulation Material	Polybutylene Terephthalate (PBT)
Operating Temperature	-55°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-140-07-S-S is determined by strict alignment of the following critical parameters:

Connector Type: Header configuration
Contact Type: Male Pin
Pitch - Mating: 0.100" (2.54mm) spacing
Number of Positions: 40-position count
Number of Rows: Single row configuration
Mounting Type: Through Hole
Termination: Solder
Shrouding: Unshrouded design

The substitute part 4-103747-0 (TE Connectivity AMP Connectors AMPMODU Mod II series) satisfies all critical substitution parameters. Variations in secondary parameters such as contact length, insulation height, and operating temperature range do not preclude substitution when the primary functional and mechanical parameters align.

Parameter Comparison

Parameter	TSW-140-07-S-S (Samtec)	4-103747-0 (TE Connectivity)
Connector Type	Header	Header, Breakaway
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	40	40
Number of Rows	1	1
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Shrouding	Unshrouded	Unshrouded
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.100" (2.54mm)	0.090" (2.29mm)
Overall Contact Length	0.430" (10.92mm)	0.410" (10.41mm)
Insulation Height	0.100" (2.54mm)	0.090" (2.29mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Material	Phosphor Bronze	Copper Alloy
Insulation Material	Polybutylene Terephthalate (PBT)	Thermoplastic
Operating Temperature	-55°C ~ 125°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Product Status	Active	Obsolete
RoHS Status	ROHS3 Compliant	Not applicable

Engineering Selection Recommendations

The TSW-140-07-S-S remains the primary selection for new designs due to its active product status and ROHS3 compliance certification. This connector is suitable for applications requiring extended operating temperature range (-55°C to 125°C) and modern regulatory compliance.

The 4-103747-0 substitute part is classified as obsolete and carries "Not applicable" RoHS status, indicating it does not meet current regulatory requirements. This part should be considered only for legacy system maintenance or applications where regulatory compliance is not mandated. The substitute exhibits a reduced operating temperature maximum (105°C versus 125°C) and narrower upper temperature specification.

For new product development, the TSW-140-07-S-S is the appropriate selection. For existing systems currently using 4-103747-0, the TSW-140-07-S-S provides a forward-compatible upgrade path with improved compliance posture and extended thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can 4-103747-0 be used as a direct replacement for TSW-140-07-S-S in new designs?

A: No. The 4-103747-0 is classified as obsolete and does not meet ROHS3 compliance requirements. New designs must use TSW-140-07-S-S to ensure regulatory compliance and long-term supply availability.

Q: What are the mechanical compatibility considerations between these parts?

A: Both connectors share identical pitch spacing (0.100"), position count (40), and row configuration (1 row). Minor dimensional variations exist in contact post length (0.100" versus 0.090") and insulation height (0.100" versus 0.090"). These differences may affect PCB footprint clearance and mating depth. Verify mechanical fit within your specific application before substitution.

Q: Are there thermal operating range differences that affect application suitability?

A: Yes. The TSW-140-07-S-S operates from -55°C to 125°C, while 4-103747-0 operates from -65°C to 105°C. Applications requiring operation above 105°C must use TSW-140-07-S-S. The substitute part provides lower temperature capability (-65°C versus -55°C) but reduced upper temperature specification.

Q: What is the significance of the "Breakaway" designation on the substitute part?

A: The 4-103747-0 features a breakaway connector design, allowing individual positions to be separated. The TSW-140-07-S-S does not include this feature. This architectural difference does not affect electrical or mechanical compatibility for standard through-hole mounting applications.

Q: Are contact material differences significant for substitution?

A: The TSW-140-07-S-S uses Phosphor Bronze contacts while 4-103747-0 uses Copper Alloy contacts. Both materials provide adequate electrical conductivity and contact reliability. Contact finish specifications (gold mating surface, tin or tin-lead post finish) are equivalent for standard signal applications. Material selection does not preclude substitution based on electrical performance.

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