TFM-140-12-S-D-P Equivalent & Substitute Parts

Part Overview

The TFM-140-12-S-D-P is a rectangular connector header manufactured by Samtec Inc. in the Tiger Eye™ TFM series. This surface mount connector features 80 positions with 0.050" (1.27mm) pitch, designed for board-to-board or cable applications with shrouded 4-wall construction and push-pull fastening. The part is active in production status and RoHS3 compliant with MSL 1 rating. Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this connector category.

Substiute Parts

TFM-140-12-S-D-P

Samtec Inc.In Stock: 732TFM-140-12-S-D-P Datasheet

Current PartRFQ

5-104656-8

TE Connectivity AMP ConnectorsIn Stock: 11085-104656-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TFM-140-12-S-D-P are identified based on the following critical parameters that define functional equivalence:

• Connector type (Header) and contact type (Male Pin)
• Number of positions (80) and row configuration (2 rows)
• Mating pitch (0.050" / 1.27mm) and row spacing (0.050" / 1.27mm)
• Mounting type (Surface Mount) and termination method (Solder)
• Shrouding configuration (Shrouded - 4 Wall)
• Fastening mechanism (Push-Pull)
• Insulation material (Liquid Crystal Polymer)
• Contact material (Phosphor Bronze)
• Active product status and RoHS3 compliance

The substitute part 5-104656-8 from TE Connectivity AMP Connectors meets these core electrical and mechanical requirements, enabling direct functional substitution in applications requiring rectangular connectors with these specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TFM-140-12-S-D-P and 5-104656-8 are active production parts with RoHS3 compliance and MSL 1 rating, suitable for applications requiring rectangular connectors with 80-position, 0.050" pitch configuration. Selection between these parts depends on application-specific requirements:

The TFM-140-12-S-D-P supports higher current capacity (2.9A per contact) and extended upper operating temperature (125°C) with specified voltage rating (275VAC). The 5-104656-8 operates within a lower temperature range (105°C maximum) with reduced current capacity (0.5A per contact) but provides board lock features and automotive/medical/military application certifications.

Both parts feature identical mating pitch, row spacing, shrouding configuration, fastening mechanism, and contact materials. Differences in contact length (0.139" vs. 0.120"), insulation height (0.290" vs. 0.298"), and contact shape (square vs. circular) must be evaluated against specific PCB layout and mating connector requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5-104656-8 directly replace the TFM-140-12-S-D-P in all applications?

A: Direct substitution is possible for applications within the 5-104656-8 operating parameters. The substitute part has lower current capacity (0.5A vs. 2.9A per contact) and reduced maximum operating temperature (105°C vs. 125°C). Applications requiring the full current or temperature specifications of the TFM-140-12-S-D-P require the original part.

Q: What are the key differences between these two connectors?

A: The primary differences are current rating (2.9A vs. 0.5A per contact), maximum operating temperature (125°C vs. 105°C), contact shape (square vs. circular), and contact length (0.139" vs. 0.120"). Both share identical pitch, position count, shrouding, fastening type, and termination method.

Q: Are both parts RoHS3 compliant?

A: Yes, both the TFM-140-12-S-D-P and 5-104656-8 are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity level.

Q: What is the significance of contact shape difference (square vs. circular)?

A: Contact shape affects mating force, contact resistance, and mechanical engagement characteristics. Square contacts (TFM-140-12-S-D-P) and circular contacts (5-104656-8) require compatible mating connectors. Verify mating connector specifications before substitution.

Q: Do these connectors require specific PCB layout considerations?

A: Both connectors are surface mount with identical pitch and row spacing. Differences in contact length (0.139" vs. 0.120") and insulation height (0.290" vs. 0.298") may affect PCB footprint and clearance requirements. Verify mechanical compatibility with your PCB design.

Q: What applications are these connectors suitable for?

A: The TFM-140-12-S-D-P is specified for general board-to-board and cable applications. The 5-104656-8 is certified for automotive, general purpose, medical, military, and telecommunications applications.