Equivalent & Substitute Parts for TFC-140-31-F-D

Part Overview

The TFC-140-31-F-D is a Samtec Tiger Eye™ TFC series rectangular connector header designed for through-hole board-to-board or cable applications. This 80-position, 2-row shrouded connector operates across -55°C to 125°C and carries a 3.1A per contact current rating at 275VAC. The part is Active status and ROHS3 compliant with UL94 V-0 flammability rating. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative connector options within the same series that maintain electrical and mechanical compatibility.

Substiute Parts

TFC-140-31-F-D

Samtec Inc.In Stock: 756TFC-140-31-F-D Datasheet

Current PartRFQ

TFC-140-21-F-D

Samtec Inc.In Stock: 879TFC-140-21-F-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The TFC-140-21-F-D qualifies as a direct substitute for the TFC-140-31-F-D based on the following criteria:

Both parts share identical specifications across all critical electrical and mechanical parameters: same manufacturer (Samtec Inc.), same series (Tiger Eye™ TFC), same connector type (Header), same contact type (Male Pin), same position count (80), same row configuration (2 rows), same pitch (0.050"), same mounting method (Through Hole), same termination (Solder), same fastening type (Push-Pull), same current rating (3.1A per Contact), same voltage rating (275VAC), same operating temperature range (-55°C ~ 125°C), same contact material (Phosphor Bronze), same contact finishes (Gold mating, Tin post), same insulation material (LCP), same flammability rating (UL94 V-0), same RoHS compliance (ROHS3), and same MSL rating (1).

The only dimensional difference is insulation height: TFC-140-31-F-D has 0.435" (11.05mm) while TFC-140-21-F-D has 0.290" (7.37mm). This variation does not affect electrical compatibility or contact engagement characteristics, as mating contact length and row spacing remain constant.

Parameter Comparison

Engineering Selection Recommendations

Both TFC-140-31-F-D and TFC-140-21-F-D are Active status products from Samtec Inc. with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts depends on PCB layout requirements and available board space. The TFC-140-31-F-D provides greater insulation height at 0.435" (11.05mm), while the TFC-140-21-F-D offers a more compact profile at 0.290" (7.37mm). Both maintain identical electrical performance, contact engagement characteristics, and environmental ratings. Current inventory availability shows 652 units for TFC-140-31-F-D and 797 units for TFC-140-21-F-D.

Frequently Asked Questions (FAQ)

Q: Are TFC-140-31-F-D and TFC-140-21-F-D electrically interchangeable?

A: Yes. Both connectors carry identical current ratings (3.1A per contact), voltage ratings (275VAC), operating temperature ranges (-55°C ~ 125°C), contact materials (Phosphor Bronze), and contact finishes (Gold mating, Tin post). Electrical performance is equivalent.

Q: What is the primary difference between these two part numbers?

A: The insulation height differs. TFC-140-31-F-D has 0.435" (11.05mm) insulation height, while TFC-140-21-F-D has 0.290" (7.37mm). This affects board-level clearance and mechanical fit but does not impact electrical compatibility.

Q: Can I substitute TFC-140-21-F-D for TFC-140-31-F-D in an existing design?

A: Substitution is possible if PCB layout accommodates the reduced insulation height of 0.290" (7.37mm). Verify that mating connector clearance and board-level component spacing remain within design tolerances. Contact engagement and electrical specifications are identical.

Q: Do both parts require the same mating connector?

A: Yes. Both headers use identical pitch (0.050"), row spacing (0.050"), contact length (0.139" mating), and fastening type (Push-Pull). They mate with the same Tiger Eye™ TFC series receptacle connectors.

Q: Are both parts RoHS compliant?

A: Yes. Both TFC-140-31-F-D and TFC-140-21-F-D are ROHS3 compliant with UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level.