TSW-115-07-L-S Equivalent & Substitute Parts

Part Overview

The TSW-115-07-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 15-position, single-row header operates at 0.100" (2.54mm) pitch and features gold-plated mating contacts with tin-plated posts. The part maintains active product status with full inventory availability.

Substitute parts become necessary when the primary part reaches end-of-life, experiences supply constraints, or when design requirements necessitate alternative connector configurations. The identified substitute maintains core electrical and mechanical compatibility while offering different position counts and manufacturer specifications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	15
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Insulation Material	Polybutylene Terephthalate (PBT)
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the TSW-115-07-L-S is determined by the following critical parameters:

Pitch - Mating: 0.100" (2.54mm) — must remain constant for PCB footprint compatibility
Contact Type: Male Pin — determines mating interface requirements
Mounting Type: Through Hole — establishes board assembly method
Termination: Solder — specifies connection method to PCB
Connector Type: Header — defines functional category
Number of Rows: 1 — establishes physical layout

The substitute part 4-103185-0 maintains identical pitch, contact type, mounting method, and termination. However, it differs in position count (40 vs. 15), series designation, and manufacturer. The substitute is offered as a breakaway header, allowing it to be segmented to 15 positions for direct functional equivalence.

Parameter Comparison

Parameter	TSW-115-07-L-S (Main)	4-103185-0 (Substitute)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors
Series	TSW	AMPMODU Mod II
Product Status	Active	Obsolete
Connector Type	Header	Header, Breakaway
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	15	40
Number of Rows	1	1
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.100" (2.54mm)	0.120" (3.05mm)
Overall Contact Length	0.430" (10.92mm)	0.440" (11.18mm)
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	15.0µin (0.38µm)
Contact Finish - Post	Tin	Tin-Lead
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
Insulation Color	Black	Black
Current Rating	Not specified	3A
RoHS Status	ROHS3 Compliant	Not applicable
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The TSW-115-07-L-S remains the preferred choice for new designs due to its active product status and ROHS3 compliance certification. The part is currently in stock with full inventory availability.

The substitute part 4-103185-0 carries obsolete product status, indicating discontinued manufacturing and limited future availability. Additionally, this part does not carry RoHS3 compliance documentation, which may present regulatory constraints in applications requiring environmental compliance certification.

Selection of the substitute should be limited to legacy system maintenance or situations where the primary part is unavailable. The breakaway configuration of the substitute allows segmentation to 15 positions, maintaining functional equivalence for the specified pin count.

Frequently Asked Questions (FAQ)

Q: Can 4-103185-0 directly replace TSW-115-07-L-S in new designs?

A: No. The substitute carries obsolete product status and lacks ROHS3 compliance documentation. New designs should specify TSW-115-07-L-S to ensure long-term supply availability and regulatory compliance.

Q: What is the significance of the breakaway feature on 4-103185-0?

A: The breakaway header allows the 40-position connector to be segmented into smaller configurations. For 15-position applications, the connector can be separated to match the TSW-115-07-L-S pin count while maintaining identical pitch and contact specifications.

Q: Are there differences in contact post length between these parts?

A: Yes. The TSW-115-07-L-S has a contact post length of 0.100" (2.54mm), while 4-103185-0 measures 0.120" (3.05mm). This 0.020" (0.51mm) difference may affect PCB hole depth requirements and should be verified during board design.

Q: Does the contact finish difference affect compatibility?

A: The main part uses tin-plated posts; the substitute uses tin-lead plating. Both finishes are compatible with standard solder reflow processes. However, tin-lead plating is restricted in ROHS3-compliant applications, which may limit the substitute's use in regulated environments.

Q: What is the operating temperature range difference?

A: TSW-115-07-L-S operates from -55°C to 125°C, while 4-103185-0 operates from -65°C to 105°C. The main part offers a higher maximum temperature rating, which may be critical for high-temperature applications.

Q: Is the insulation material difference significant?

A: The main part uses Polybutylene Terephthalate (PBT); the substitute uses unspecified thermoplastic material. Both materials meet UL94 V-0 flammability requirements. PBT offers superior chemical resistance and dimensional stability, which may be relevant for harsh environments.

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