TSW-140-14-F-S Equivalent & Substitute Parts Reference

Part Overview

The TSW-140-14-F-S is a Classic PCB Header Strip manufactured by Samtec Inc., classified as a rectangular connector for through-hole mounting applications. This 40-position, single-row header connector operates at 0.100" (2.54mm) pitch and features male pins with gold-plated mating contacts and tin-plated posts. The component maintains Active product status with 713 units in current inventory stock.

Substitute parts become necessary when addressing supply chain constraints, design revisions requiring alternative manufacturers, or when transitioning from obsolete product lines to active alternatives. The substitute parts listed maintain functional equivalence through matching electrical and mechanical parameters while offering different availability profiles and compliance certifications.

Key Parameters

Parameter	Value	Specification Basis
Connector Type	Header	Determines board-to-board or cable interface capability
Contact Type	Male Pin	Defines mating interface configuration
Pitch - Mating	0.100" (2.54mm)	Critical for PCB layout and receptacle compatibility
Number of Positions	40	Determines signal/power distribution capacity
Number of Rows	1	Defines physical footprint and mounting pattern
Mounting Type	Through Hole	Specifies PCB assembly method and mechanical retention
Termination	Solder	Defines connection method to PCB
Contact Shape	Square	Ensures proper contact engagement and retention
Insulation Material	Polybutylene Terephthalate (PBT) or equivalent	Affects thermal and chemical resistance
Operating Temperature Range	-55°C ~ 125°C (main part)	Determines environmental suitability
Material Flammability Rating	UL94 V-0	Safety and regulatory compliance requirement
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-140-14-F-S is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 40
Number of Rows: 1
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Contact Shape: Square
Fastening Type: Push-Pull
Style: Board to Board or Cable
Shrouding: Unshrouded

Acceptable Variation Parameters:

Contact Finish - Mating: Gold or Tin (both provide adequate electrical conductivity)
Insulation Material: PBT or Thermoplastic or Liquid Crystal Polymer (LCP) (all meet UL94 V-0 flammability requirements)
Operating Temperature Range: Substitute parts rated -65°C ~ 105°C are functionally compatible with applications requiring -55°C ~ 125°C when thermal margin analysis confirms suitability
Contact Length - Mating: Minor variations (0.318" to 0.320") within manufacturing tolerance
Contact Length - Post: Variations (0.110" to 0.125") acceptable for through-hole solder termination
Overall Contact Length: Variations (0.530" to 0.533") within acceptable range

Compliance Considerations:

RoHS3 Compliant status preferred for new designs
UL94 V-0 flammability rating maintained across all substitutes
ECCN and HTSUS classifications identical (EAR99 and 8536.69.4040)

The three substitute parts (4-103321-0, 4-103321-8, 9-146274-0) all satisfy these criteria and are classified as equivalent alternatives to the TSW-140-14-F-S.

Parameter Comparison

Parameter	TSW-140-14-F-S (Samtec)	4-103321-0 (TE Conn.)	4-103321-8 (TE Conn.)	9-146274-0 (TE Conn.)
Manufacturer	Samtec Inc.	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP
Series	TSW	AMPMODU Mod II	AMPMODU Mod II	AMPMODU Mod II
Product Status	Active	Obsolete	Obsolete	Active
Connector Type	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	40	40	40	40
Number of Rows	1	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder
Contact Length - Mating	0.320" (8.13mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)
Contact Length - Post	0.110" (2.79mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Overall Contact Length	0.530" (13.46mm)	0.533" (13.55mm)	0.533" (13.55mm)	0.533" (13.55mm)
Insulation Height	0.100" (2.54mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)
Contact Shape	Square	Square	Square	Square
Contact Finish - Mating	Gold	Tin-Lead	Tin	Tin
Contact Finish Thickness - Mating	3.00µin (0.076µm)	100.0µin (2.54µm)	100.0µin (2.54µm)	100.0µin (2.54µm)
Contact Material	Phosphor Bronze	Copper Alloy	Copper Alloy	Copper Alloy
Insulation Material	Polybutylene Terephthalate (PBT)	Thermoplastic	Thermoplastic	Liquid Crystal Polymer (LCP)
Operating Temperature	-55°C ~ 125°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black
Current Rating (Amps)	Not specified	3A	3A	3A
RoHS Status	ROHS3 Compliant	Not applicable	ROHS3 Compliant	RoHS Compliant
Inventory (Pcs)	713	980	2828	1197

Engineering Selection Recommendations

Primary Selection (Active Product Status):

The 9-146274-0 (TE Connectivity) is the recommended substitute when supply of the TSW-140-14-F-S becomes constrained. This part maintains Active product status, ensuring long-term availability and manufacturing continuity. It carries RoHS Compliant certification with REACH Unaffected status, meeting current environmental regulations. The Liquid Crystal Polymer (LCP) insulation material provides superior thermal and chemical resistance compared to standard thermoplastic alternatives.

Secondary Selection (Active Product Status with RoHS3 Compliance):

The 4-103321-8 (TE Connectivity) offers an alternative with explicit ROHS3 Compliant designation and higher inventory availability (2828 units). Despite Obsolete product status classification, current stock levels indicate continued manufacturing support. This part is suitable for applications where RoHS3 compliance documentation is required.

Tertiary Selection (Obsolete Status):

The 4-103321-0 (TE Connectivity) is classified as Obsolete and carries "Not applicable" RoHS status. This part should be selected only when existing designs require exact compatibility with legacy systems or when supply of active alternatives is unavailable. The Tin-Lead contact finish reflects pre-RoHS manufacturing standards.

Temperature Range Consideration:

All substitute parts operate at -65°C ~ 105°C, which is narrower than the main part's -55°C ~ 125°C range. Applications requiring operation above 105°C or below -65°C must retain the TSW-140-14-F-S or conduct thermal margin analysis to confirm substitute suitability.

Contact Finish Selection:

The TSW-140-14-F-S features gold-plated mating contacts (3.00µin thickness), while all substitutes use tin or tin-lead finishes (100.0µin thickness). Tin finishes provide adequate electrical conductivity for standard signal and power distribution applications. Gold plating offers superior corrosion resistance in high-humidity or corrosive environments; if this property is critical, the TSW-140-14-F-S should be retained.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different insulation material?

A: Yes. The TSW-140-14-F-S uses Polybutylene Terephthalate (PBT), while substitutes use Thermoplastic or Liquid Crystal Polymer (LCP). All materials meet UL94 V-0 flammability requirements. LCP (9-146274-0) provides superior thermal stability; Thermoplastic (4-103321-0, 4-103321-8) is functionally equivalent for standard applications. Material selection depends on thermal environment and mechanical stress requirements.

Q: What is the difference between the three substitute parts?

A: All three substitutes (4-103321-0, 4-103321-8, 9-146274-0) share identical electrical and mechanical specifications. Differences are: (1) Product Status: 4-103321-0 and 4-103321-8 are Obsolete; 9-146274-0 is Active; (2) RoHS Compliance: 4-103321-8 and 9-146274-0 are RoHS compliant; 4-103321-0 is not; (3) Insulation Material: 9-146274-0 uses LCP; others use Thermoplastic; (4) Inventory: 4-103321-8 has highest stock (2828 units).

Q: Are the contact length differences significant?

A: Minor variations exist: TSW-140-14-F-S mating contact is 0.320" (8.13mm); substitutes are 0.318" (8.08mm). Post length varies from 0.110" to 0.125". These differences fall within manufacturing tolerance and do not affect PCB assembly or receptacle engagement. Overall contact length remains within 0.530" to 0.533" range.

Q: Can I substitute if my application requires -55°C to 125°C operation?

A: Substitute parts are rated -65°C to 105°C. The upper temperature limit is 20°C lower than the main part. Substitution is acceptable if your application operates below 105°C. If sustained operation above 105°C is required, retain the TSW-140-14-F-S or conduct thermal analysis to confirm component reliability at elevated temperatures.

Q: Does the gold vs. tin contact finish affect compatibility?

A: No. Both gold and tin finishes provide adequate electrical conductivity for standard applications. Gold offers superior corrosion resistance in harsh environments (high humidity, salt spray, chemical exposure). Tin is suitable for controlled indoor environments. Functionally, both finishes are compatible with standard receptacles and mating connectors.

Q: Which substitute should I choose for new designs?

A: Select 9-146274-0 (TE Connectivity). It maintains Active product status, ensuring long-term availability. It carries RoHS Compliant certification and REACH Unaffected status, meeting current environmental standards. LCP insulation provides superior thermal performance. This part is suitable for production designs requiring supply chain stability.

Q: Are these parts interchangeable on the PCB?

A: Yes. All parts share identical pitch (0.100"), position count (40), row configuration (1), and through-hole mounting pattern. PCB footprints are directly interchangeable. No layout modifications are required when substituting between these parts.

Q: What does "Breakaway" mean on the substitute parts?

A: Breakaway indicates the connector can be separated into individual pins or smaller groups. This feature does not affect compatibility with standard receptacles or mating connectors. The TSW-140-14-F-S does not specify breakaway capability, but this does not prevent substitution.

Q: Is RoHS compliance mandatory for my application?

A: RoHS compliance is mandatory for products sold in the European Union and increasingly required by major OEMs globally. For new designs, select 4-103321-8 or 9-146274-0 (both RoHS compliant). For legacy systems or non-regulated applications, 4-103321-0 is acceptable. Verify your customer or regulatory requirements before finalizing part selection.

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