TSW-129-07-L-D Equivalent & Substitute Parts

Part Overview

The TSW-129-07-L-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This connector features 58 positions arranged in 2 rows with a 0.100" (2.54mm) pitch and is currently in active production status. The part is widely used in applications requiring reliable solder termination and push-pull fastening mechanisms.

Substitute parts become necessary when the primary part reaches end-of-life status, experiences supply constraints, or when design requirements allow for compatible alternatives that 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	58
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Material	Phosphor Bronze
Insulation Material	Polybutylene Terephthalate (PBT)
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-129-07-L-D is determined by the following critical parameters:

Pitch - Mating: 0.100" (2.54mm)
Connector Type: Header with Male Pin contacts
Mounting Type: Through Hole with Solder termination
Fastening Type: Push-Pull mechanism
Contact Finish - Mating: Gold plating
Insulation Material: Thermoplastic or PBT
Operating Temperature Range: Minimum -55°C, Maximum 125°C or higher
Material Flammability Rating: UL94 V-0
RoHS Compliance: ROHS3 or equivalent

The substitute part 4-103186-0 (TE Connectivity AMP Connectors AMPMODU Mod II series) shares the core electrical and mechanical characteristics required for functional equivalence, though variations exist in position count, contact dimensions, and compliance certifications.

Parameter Comparison

Parameter	TSW-129-07-L-D (Main)	4-103186-0 (Substitute)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors
Connector Type	Header	Header, Breakaway
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	58	80
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
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 Material	Phosphor Bronze	Copper Alloy
Insulation Material	Polybutylene Terephthalate (PBT)	Thermoplastic
Operating Temperature Range	-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	RoHS non-compliant

Engineering Selection Recommendations

The TSW-129-07-L-D remains the preferred selection for new designs due to its active production status and ROHS3 compliance. The part is suitable for applications requiring compliance with current environmental and regulatory standards.

The substitute part 4-103186-0 is classified as obsolete and RoHS non-compliant. This part should be considered only for legacy system maintenance or repair applications where the original specification must be maintained. The higher position count (80 vs. 58) and narrower maximum operating temperature (105°C vs. 125°C) represent functional differences that require design verification before substitution.

Frequently Asked Questions (FAQ)

Q: Can 4-103186-0 be used as a direct replacement for TSW-129-07-L-D in new designs?

A: No. The substitute part is obsolete and RoHS non-compliant. New designs should specify the TSW-129-07-L-D or identify an active-status alternative that meets current compliance requirements.

Q: What are the key differences between these connectors?

A: The primary differences are position count (58 vs. 80), contact post length (0.100" vs. 0.120"), maximum operating temperature (125°C vs. 105°C), and compliance status. The TSW-129-07-L-D is ROHS3 compliant and active; 4-103186-0 is obsolete and RoHS non-compliant.

Q: Are the pitch and row spacing identical?

A: Yes. Both connectors maintain 0.100" (2.54mm) pitch and row spacing, which is the primary parameter enabling functional equivalence for board-to-board or cable applications.

Q: What is the significance of the contact post length difference?

A: The contact post length affects PCB hole depth and solder joint geometry. The TSW-129-07-L-D has a 0.100" post length, while 4-103186-0 has 0.120". PCB design must accommodate the specific post length of the selected connector.

Q: Can the higher position count of 4-103186-0 be used in applications requiring only 58 positions?

A: Position count is a design parameter. Using a higher-position connector in a lower-position application requires design modification and is not a direct substitution. The connector must be selected based on the specific application requirement.

Q: What compliance certifications apply to each part?

A: TSW-129-07-L-D is ROHS3 compliant with UL94 V-0 flammability rating. 4-103186-0 is RoHS non-compliant with UL94 V-0 flammability rating. Applications subject to RoHS regulations must use the TSW-129-07-L-D.

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