FTS-125-01-S-D Equivalent & Substitute Parts

Part Overview

The FTS-125-01-S-D is an active rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This 50-position, 2-row connector operates across -55°C to 125°C and features gold-plated mating contacts with tin-plated posts. Identifying equivalent and substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

FTS-125-01-S-D

Samtec Inc.In Stock: 871FTS-125-01-S-D Datasheet

Current PartRFQ

FTSH-125-01-S-D

Samtec Inc.In Stock: 873FTSH-125-01-S-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FTS-125-01-S-D is determined by strict alignment of the following critical parameters:

• Connector Type & Contact Configuration: Header, cuttable design with male pin contacts
• Position Count & Row Configuration: 50 positions arranged in 2 rows
• Pitch Specifications: 0.050" (1.27mm) mating pitch and row spacing
• Mounting & Termination: Through-hole solder termination
• Electrical Performance: 3.4A per contact current rating
• Environmental Compliance: Operating temperature range -55°C to 125°C, UL94 V-0 flammability rating, ROHS3 compliance

The FTSH-125-01-S-D qualifies as a substitute part because it maintains identical specifications across all critical parameters. Differences in overall contact length and insulation height do not affect functional compatibility in applications designed for the FTS-125-01-S-D footprint and electrical requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the FTS-125-01-S-D and FTSH-125-01-S-D are active products from Samtec Inc. with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on mechanical envelope requirements specific to the application.

The FTS-125-01-S-D features a lower overall contact length (0.244") and reduced insulation height (0.034"), making it suitable for space-constrained applications with minimal board-to-board clearance.

The FTSH-125-01-S-D provides extended overall contact length (0.309") and increased insulation height (0.099"), offering greater mechanical robustness and accommodation for thicker PCB assemblies or applications requiring additional standoff distance.

Both parts maintain identical electrical performance, contact configuration, and environmental operating specifications. Selection should be driven by PCB thickness, available vertical clearance, and mechanical mounting requirements.

Frequently Asked Questions (FAQ)

Q: Can FTSH-125-01-S-D be used as a direct replacement for FTS-125-01-S-D?

A: Yes, the FTSH-125-01-S-D is functionally equivalent for electrical and contact specifications. However, the increased overall contact length (0.309" vs 0.244") and insulation height (0.099" vs 0.034") require verification of available vertical clearance in the target application. PCB layout and mechanical envelope must accommodate these dimensional differences.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is valid when the following parameters remain constant: 50-position, 2-row configuration; 0.050" (1.27mm) mating pitch and row spacing; male pin contact type; through-hole solder termination; 3.4A per contact current rating; and -55°C to 125°C operating temperature range. Variations in overall contact length and insulation height do not affect electrical compatibility but must be evaluated for mechanical fit.

Q: Are both parts suitable for high-reliability applications?

A: Both FTS-125-01-S-D and FTSH-125-01-S-D meet UL94 V-0 flammability requirements and ROHS3 compliance standards. Both are active products with established supply chains. Selection should be based on application-specific mechanical and thermal requirements rather than reliability considerations, as both parts meet equivalent compliance standards.

Q: What is the difference between the FTS and FTSH series?

A: The primary distinction between the FTS and FTSH series lies in mechanical geometry. The FTSH series provides increased overall contact length and insulation height, accommodating applications requiring greater mechanical standoff or thicker PCB assemblies. Electrical specifications, contact materials, and environmental ratings remain identical across both series.

Q: How should I verify compatibility before design implementation?

A: Confirm that the target application's PCB thickness, available vertical clearance, and mechanical mounting structure can accommodate the selected part's overall contact length and insulation height. Verify that the 50-position, 2-row configuration with 0.050" (1.27mm) pitch aligns with the connector footprint and mating interface requirements.