TSW-136-08-G-S-RA Equivalent & Substitute Parts

Part Overview

The TSW-136-08-G-S-RA is a rectangular connector header manufactured by Samtec Inc., designed for through-hole, right-angle board-to-board or cable applications. This 36-position connector operates at 0.100" (2.54mm) pitch with gold-plated phosphor bronze contacts and solder termination. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts become necessary when addressing obsolescence concerns, specific compliance requirements, or design revisions requiring alternative contact configurations or material specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TSW-136-08-G-S-RA
Manufacturer	Samtec Inc.
Category	Rectangular Connectors
Connector Type	Header
Number of Positions	36
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
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-136-08-G-S-RA is determined by the following critical parameters: connector type (header), contact type (male pin), pitch specification (0.100" / 2.54mm), mounting configuration (through-hole, right-angle), termination method (solder), and contact finish (gold plating). The substitute part 4-103765-0 from TE Connectivity AMP Connectors shares these core electrical and mechanical characteristics. However, this substitute differs in position count (40 vs. 36), insulation height (0.138" vs. 0.119"), contact finish thickness on mating surfaces (30.0µin vs. 10.0µin), post contact finish material (tin-lead vs. gold), operating temperature range (-65°C ~ 105°C vs. -55°C ~ 125°C), and RoHS compliance status (non-compliant vs. ROHS3 compliant). These differences establish the substitution boundaries and require engineering evaluation based on specific application constraints.

Parameter Comparison

Parameter	TSW-136-08-G-S-RA (Main)	4-103765-0 (Substitute)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors
Connector Type	Header	Header, Breakaway
Number of Positions	36	40
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.090" (2.29mm)	0.090" (2.29mm)
Insulation Height	0.119" (3.02mm)	0.138" (4.60mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	30.0µin (0.76µm)
Contact Finish - Post	Gold	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
Product Status	Active	Obsolete
RoHS Status	ROHS3 Compliant	RoHS non-compliant
Current Rating	Not specified	3A

Engineering Selection Recommendations

The TSW-136-08-G-S-RA maintains Active product status with full ROHS3 compliance and represents the primary selection for new designs. The substitute part 4-103765-0 carries Obsolete status and RoHS non-compliance, limiting its application to legacy system maintenance or retrofit scenarios where existing connector footprints and position counts are fixed constraints. Selection between these parts must account for: position count requirements (36 vs. 40), operating temperature envelope specifications, RoHS compliance mandates for the end application, and post-contact finish material compatibility with solder processes. The higher mating contact finish thickness on the substitute (30.0µin vs. 10.0µin) provides increased wear resistance but does not alter fundamental electrical performance. The tin-lead post finish on the substitute introduces process compatibility considerations relative to lead-free solder requirements.

Frequently Asked Questions (FAQ)

Q: Can the 4-103765-0 directly replace the TSW-136-08-G-S-RA in new designs?

A: Direct replacement is not recommended for new designs. The substitute carries Obsolete product status and RoHS non-compliance. The TSW-136-08-G-S-RA is the appropriate selection for Active designs requiring current compliance certifications.

Q: What is the significance of the position count difference (36 vs. 40)?

A: Position count directly determines connector footprint and mating interface geometry. The 40-position substitute cannot be used in applications designed for 36-position headers without PCB layout modifications and potential signal routing changes.

Q: Are the contact materials interchangeable?

A: Contact materials differ (phosphor bronze vs. copper alloy) and carry different electrical and mechanical properties. While both materials support the 0.100" pitch and solder termination, material selection affects contact resistance, durability, and thermal characteristics. Substitution requires application-specific validation.

Q: Does the operating temperature range difference affect compatibility?

A: The main part operates -55°C ~ 125°C while the substitute operates -65°C ~ 105°C. Applications requiring the upper temperature limit of 125°C cannot use the substitute. Applications within the substitute's range may proceed with thermal performance validation.

Q: What compliance considerations apply to the post-contact finish?

A: The main part features gold post finish; the substitute features tin-lead post finish. Tin-lead finishes introduce lead content considerations for RoHS-regulated applications. The main part's ROHS3 compliance eliminates this concern for regulated markets.

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