SFML-110-T2-S-D-LC-K-TR Equivalent & Substitute Parts

Part Overview

The SFML-110-T2-S-D-LC-K-TR is a 20-position receptacle connector manufactured by Samtec Inc. in the Tiger Eye™ SFML series. This surface mount connector features 0.050" (1.27mm) pitch mating with gold-plated contacts and is designed for board-to-board or cable applications. The part is active in production with 896 pieces currently in stock. Alternative equivalent parts are necessary when supply constraints occur, when specific fastening mechanisms are required, or when design requirements favor alternative manufacturer specifications.

Substiute Parts

SFML-110-T2-S-D-LC-K-TR

Samtec Inc.In Stock: 977SFML-110-T2-S-D-LC-K-TR Datasheet

Current PartRFQ

5-104652-2

TE Connectivity AMP ConnectorsIn Stock: 2704835-104652-2 Datasheet

SimilarRFQ

M50-4301045

Harwin Inc.In Stock: 3955M50-4301045 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent substitution for the SFML-110-T2-S-D-LC-K-TR is determined by strict alignment of the following critical parameters:

• Connector type: Receptacle with female socket contacts
• Position count: 20 positions
• Mating pitch: 0.050" (1.27mm)
• Row configuration: 2 rows with 0.050" (1.27mm) row spacing
• Mounting: Surface mount with solder termination
• Contact finish: Gold-plated mating surface
• Insulation material: Liquid Crystal Polymer (LCP)
• Contact geometry: Square contact shape

The substitute parts 5-104652-2 (TE Connectivity) and M50-4301045 (Harwin Inc.) meet these core substitution criteria. Variations in fastening type (locking ramp versus push-pull), insulation height, operating temperature range, and current rating represent design trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance with MSL 1 rating, confirming suitability for standard manufacturing and storage conditions.

The SFML-110-T2-S-D-LC-K-TR offers the widest operating temperature range (-55°C to 125°C) and includes UL94 V-0 flammability certification. The locking ramp fastening mechanism provides positive mating assurance.

The 5-104652-2 substitute from TE Connectivity provides the highest inventory availability (270,465 pieces) and extends the lower operating temperature limit to -65°C. The push-pull fastening mechanism differs from the original design. REACH status is vendor-undefined.

The M50-4301045 substitute from Harwin Inc. maintains UL94 V-0 certification and features gold post finish. Operating temperature range is -40°C to 105°C. The push-pull fastening mechanism and board guide feature represent design variations from the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 5-104652-2 be used as a direct replacement for the SFML-110-T2-S-D-LC-K-TR?

A: The 5-104652-2 meets all core substitution criteria: 20-position receptacle, 0.050" pitch, 2-row configuration, surface mount solder termination, gold mating contacts, and LCP insulation. The fastening mechanism differs (push-pull versus locking ramp), and operating temperature range is reduced to -65°C to 105°C. Compatibility depends on application temperature requirements and mating interface design.

Q: What are the key differences between the fastening types?

A: The SFML-110-T2-S-D-LC-K-TR uses a locking ramp mechanism for positive engagement. Both substitute parts use push-pull fastening. This affects mating force, connector retention, and PCB layout requirements. Verify that the mating connector accommodates the fastening type change.

Q: Are there differences in insulation height that affect PCB layout?

A: Insulation heights vary slightly: SFML-110-T2-S-D-LC-K-TR at 0.185" (4.70mm), 5-104652-2 at 0.187" (4.75mm), and M50-4301045 at 0.181" (4.60mm). These minor variations may impact clearance in space-constrained designs. Verify PCB routing and component placement compatibility.

Q: Which substitute part has the best temperature performance?

A: The SFML-110-T2-S-D-LC-K-TR maintains the highest operating range at -55°C to 125°C. The 5-104652-2 extends the lower limit to -65°C but reduces the upper limit to 105°C. The M50-4301045 operates from -40°C to 105°C. Select based on specific application temperature requirements.

Q: Do all parts have equivalent electrical ratings?

A: The SFML-110-T2-S-D-LC-K-TR specifies 3.2A per contact and 250VAC voltage rating. The 5-104652-2 does not specify current or voltage ratings in the provided data. The M50-4301045 specifies 1A per contact with no voltage rating provided. Verify electrical requirements against application specifications before substitution.

Q: What is the significance of the contact finish differences?

A: All parts feature gold-plated mating contacts at 30.0µin (0.76µm) thickness. Post finish differs: SFML-110-T2-S-D-LC-K-TR and 5-104652-2 use tin, while M50-4301045 uses gold. Post finish affects soldering characteristics and long-term reliability in specific environments.

Q: Are there packaging considerations for production?

A: The SFML-110-T2-S-D-LC-K-TR is supplied in Tape & Reel (TR) packaging suitable for automated pick-and-place assembly. Both substitute parts are supplied in Tube packaging, requiring manual handling or alternative feeder systems. Verify compatibility with assembly equipment and processes.