TSW-140-14-S-D Equivalent & Substitute Parts

Part Overview

The TSW-140-14-S-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This connector features 80 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, suitable for board-to-board or cable interconnections. The part is currently in active product status with 778 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when procurement lead times require alternative sourcing, or when design flexibility permits the use of functionally equivalent components from different manufacturers.

Substiute Parts

TSW-140-14-S-D

Samtec Inc.In Stock: 847TSW-140-14-S-D Datasheet

Current PartRFQ

4-102977-0

TE Connectivity AMP ConnectorsIn Stock: 8234-102977-0 Datasheet

MFR RecommendedRFQ

9-146253-0

TE Connectivity AMP ConnectorsIn Stock: 25139-146253-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-140-14-S-D is determined by strict alignment of the following critical parameters:

• Connector type classification (Header with male pin contacts)
• Position count and row configuration (80 positions, 2 rows)
• Mating pitch and row spacing (0.100" / 2.54mm)
• Mounting method (Through Hole)
• Termination type (Solder)
• Contact finish at mating surface (Gold plating)
• Flammability compliance (UL94 V-0)

The two substitute parts listed—4-102977-0 and 9-146253-0—both satisfy these core electrical and mechanical compatibility criteria. Both are manufactured by TE Connectivity AMP Connectors and belong to the AMPMODU Mod II series. Differences in insulation material, contact finish post composition, and product status do not prevent functional substitution when the mating interface requirements are met.

Parameter Comparison

Engineering Selection Recommendations

The TSW-140-14-S-D remains the primary selection for new designs due to its active product status and ROHS3 compliance certification. This part is currently in stock with 778 units available.

The substitute part 9-146253-0 is recommended as the first alternative when the primary part is unavailable. This part maintains active product status, carries RoHS compliance certification, and provides equivalent mating interface characteristics. The insulation material differs (Liquid Crystal Polymer instead of Polybutylene Terephthalate), but this does not affect connector compatibility. The contact post finish is tin rather than tin-lead, which aligns with modern lead-free manufacturing standards. Inventory availability is high at 2417 units.

The substitute part 4-102977-0 is classified as obsolete and should be selected only when 9-146253-0 is unavailable and design constraints permit use of a discontinued component. This part carries no RoHS designation and uses tin-lead post finish, which may conflict with lead-free assembly requirements in certain applications. Inventory is available at 773 units.

Frequently Asked Questions (FAQ)

Q: Can 9-146253-0 be used as a direct replacement for TSW-140-14-S-D in existing designs?

A: Yes. Both connectors share identical mating pitch (0.100" / 2.54mm), row spacing, position count (80 positions, 2 rows), contact type (male pin), and mating surface finish (gold plating). The mating interface is mechanically and electrically compatible. Differences in insulation material and post finish do not affect connector mating performance.

Q: What is the difference between the two TE Connectivity substitute parts?

A: Both 4-102977-0 and 9-146253-0 are AMPMODU Mod II series connectors with identical mating characteristics. The primary differences are: 9-146253-0 is active product status while 4-102977-0 is obsolete; 9-146253-0 carries RoHS compliance while 4-102977-0 does not; 9-146253-0 uses tin post finish while 4-102977-0 uses tin-lead; 9-146253-0 uses Liquid Crystal Polymer insulation while 4-102977-0 uses thermoplastic. Inventory for 9-146253-0 is significantly higher at 2417 units versus 773 units for 4-102977-0.

Q: Are there any temperature range limitations when substituting?

A: The TSW-140-14-S-D operates from -55°C to 125°C, while both substitute parts operate from -65°C to 105°C. The substitute parts have a lower upper temperature limit (105°C versus 125°C). Applications requiring operation above 105°C must use the original TSW-140-14-S-D part.

Q: Does the difference in contact post length affect PCB layout?

A: The TSW-140-14-S-D has a contact post length of 0.110" (2.79mm), while both substitute parts have 0.125" (3.18mm) post length. This 0.015" (0.38mm) difference may affect solder joint formation and PCB hole depth requirements. PCB design should be verified to accommodate the longer post length of substitute parts.

Q: What compliance certifications apply to each part?

A: All three parts carry UL94 V-0 flammability certification and MSL 1 (Unlimited) moisture sensitivity rating. The TSW-140-14-S-D is ROHS3 compliant. The 9-146253-0 is RoHS compliant. The 4-102977-0 carries no RoHS designation. All three parts are classified as EAR99 for export control purposes.