Equivalent & Substitute Parts for TFM-120-03-L-D-WT

Part Overview

The TFM-120-03-L-D-WT is a rectangular connector header manufactured by Samtec Inc. from the Tiger Eye™ TFM series. This through-hole mounted connector features 40 positions arranged in 2 rows with 0.050" (1.27mm) pitch, designed for board-to-board or cable applications. The part is currently active in production with 675 units in stock. Alternative models may be required due to design revisions, application-specific contact length requirements, or inventory constraints.

Substiute Parts

TFM-120-03-L-D-WT

Samtec Inc.In Stock: 689TFM-120-03-L-D-WT Datasheet

Current PartRFQ

TFM-120-01-S-D-WT

Samtec Inc.In Stock: 1006TFM-120-01-S-D-WT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TFM-120-03-L-D-WT is determined by the following critical parameters that must remain constant:

• Manufacturer: Samtec Inc.
• Series: Tiger Eye™ TFM
• Number of Positions: 40
• Number of Rows: 2
• Pitch - Mating: 0.050" (1.27mm)
• Row Spacing - Mating: 0.050" (1.27mm)
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Current Rating: 2.9A per Contact
• Voltage Rating: 275VAC
• Operating Temperature: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

The substitute part TFM-120-01-S-D-WT maintains all critical parameters. Variations in contact length specifications and contact finish thickness do not affect functional compatibility within the established electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

Both TFM-120-03-L-D-WT and TFM-120-01-S-D-WT are active products from Samtec Inc. with ROHS3 compliance and identical electrical ratings. Selection between these parts should be based on specific application requirements regarding contact length specifications. The TFM-120-03-L-D-WT provides longer mating and post contact lengths (0.139" mating, 0.111" post), while the TFM-120-01-S-D-WT offers shorter contact lengths (0.131" mating, 0.078" post). The TFM-120-01-S-D-WT features increased gold plating thickness on mating contacts (30.0µin versus 15.0µin), which may provide enhanced durability in high-cycle mating applications. Both parts maintain identical electrical performance, thermal ratings, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can TFM-120-01-S-D-WT be used as a direct replacement for TFM-120-03-L-D-WT?

A: Yes, within applications where the contact length differences are accommodated by the PCB design. The mating contact length difference is 0.008" (0.20mm) and the post contact length difference is 0.033" (0.84mm). Verify that your board layout and mating connector specifications support these dimensional variations.

Q: What is the significance of the contact finish thickness difference?

A: The TFM-120-01-S-D-WT features double the gold plating thickness on mating contacts (30.0µin versus 15.0µin). This provides increased wear resistance in applications with frequent mating cycles or harsh environmental exposure.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts maintain identical current ratings (2.9A per contact), voltage ratings (275VAC), and operating temperature ranges (-55°C ~ 125°C).

Q: Do both parts meet the same compliance standards?

A: Yes. Both TFM-120-03-L-D-WT and TFM-120-01-S-D-WT are ROHS3 compliant, REACH unaffected, and rated UL94 V-0 for material flammability.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.