FTMH-109-03-L-DH Equivalent & Substitute Parts

Part Overview

The FTMH-109-03-L-DH is a rectangular connector header manufactured by Samtec Inc., designed for surface mount, right-angle board-to-board applications. This 18-position connector operates at 0.039" (1.00mm) pitch with dual rows and is actively produced. Alternative components may be required due to inventory constraints, packaging preferences, or specific application requirements where substitute parts meet the electrical and mechanical specifications.

Substiute Parts

FTMH-109-03-L-DH

Samtec Inc.In Stock: 856FTMH-109-03-L-DH Datasheet

Current PartRFQ

BC057-18-A-A-0150-L-C

GCTIn Stock: 4061BC057-18-A-A-0150-L-C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FTMH-109-03-L-DH is determined by strict alignment of the following critical parameters:

• Connector Type & Contact Type: Header with male pins
• Position Count & Row Configuration: 18 positions in 2 rows
• Pitch Specifications: 0.039" (1.00mm) mating pitch and row spacing
• Mounting & Orientation: Surface mount, right-angle configuration
• Termination & Fastening: Solder termination with push-pull fastening
• Insulation Material: Liquid Crystal Polymer (LCP)
• Contact Finish: Gold-plated mating surface
• Compliance: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1

The BC057-18-A-A-0150-L-C from GCT meets these core substitution criteria, maintaining functional and mechanical compatibility within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

Both the FTMH-109-03-L-DH and BC057-18-A-A-0150-L-C are active products with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following provided specifications:

• Current Requirements: The FTMH-109-03-L-DH supports 2.8A per contact, while the BC057-18-A-A-0150-L-C supports 1A per contact. Applications requiring higher current density must use the FTMH-109-03-L-DH.
• Temperature Range: The FTMH-109-03-L-DH operates from -55°C to 125°C, while the BC057-18-A-A-0150-L-C operates from -40°C to 105°C. Applications requiring extended low-temperature operation must use the FTMH-109-03-L-DH.
• Contact Length: The FTMH-109-03-L-DH has a mating contact length of 0.065" (1.65mm) compared to 0.059" (1.50mm) for the BC057-18-A-A-0150-L-C. Mechanical clearance constraints may influence selection.
• Packaging: The FTMH-109-03-L-DH is supplied in Tube packaging, while the BC057-18-A-A-0150-L-C is supplied in Tape & Reel (TR) format. Packaging preference and assembly process requirements should guide selection.

Frequently Asked Questions (FAQ)

Q: Can the BC057-18-A-A-0150-L-C directly replace the FTMH-109-03-L-DH in all applications?

A: The BC057-18-A-A-0150-L-C is mechanically and electrically compatible for applications within its specified current (1A per contact maximum) and temperature (-40°C to 105°C) ranges. Applications exceeding these limits require the FTMH-109-03-L-DH.

Q: What are the key differences between these two 18-position connectors?

A: The primary differences are current rating (2.8A vs. 1A per contact), operating temperature range (-55°C to 125°C vs. -40°C to 105°C), contact length (0.065" vs. 0.059"), and packaging format (Tube vs. Tape & Reel).

Q: Are both parts suitable for board-to-board applications?

A: Yes, both the FTMH-109-03-L-DH and BC057-18-A-A-0150-L-C are designed for board-to-board surface mount, right-angle configurations with identical pitch and row spacing specifications.

Q: What is the significance of the packaging difference?

A: The FTMH-109-03-L-DH is packaged in Tube format, while the BC057-18-A-A-0150-L-C is supplied in Tape & Reel (TR) format. Tape & Reel packaging is typically used for automated assembly processes, while Tube packaging is suitable for manual or lower-volume applications.

Q: Do both parts meet the same compliance standards?

A: Yes, both parts are ROHS3 compliant, UL94 V-0 rated, and have MSL 1 (Unlimited) moisture sensitivity levels. Both are active products with equivalent regulatory status.