SFML-110-T1-S-D Equivalent & Substitute Parts

Part Overview

The SFML-110-T1-S-D is a 20-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFML series, designed for board-to-board or cable applications. This through-hole mounted connector features 0.050" (1.27mm) pitch contacts with gold mating finish and tin post finish, rated for 3.2A per contact at 250VAC. The connector is currently active in production and widely available in inventory (1034 pcs in stock). Equivalent and substitute parts are identified to support design flexibility, procurement alternatives, and supply chain continuity.

Substiute Parts

SFML-110-T1-S-D

Samtec Inc.In Stock: 1086SFML-110-T1-S-D Datasheet

Current PartRFQ

SFML-110-01-S-D

Samtec Inc.In Stock: 1835SFML-110-01-S-D Datasheet

SimilarRFQ

M50-4301045

Harwin Inc.In Stock: 3955M50-4301045 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the SFML-110-T1-S-D is based on the following critical parameters that must remain constant or compatible:

Primary Matching Criteria:

• Connector type: Receptacle
• Contact type: Female Socket
• Number of positions: 20
• Pitch - mating: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing - mating: 0.050" (1.27mm)
• Insulation material: Liquid Crystal Polymer (LCP)
• Contact shape: Square
• Termination: Solder
• RoHS compliance: ROHS3 Compliant

Identified Substitutes:

Group 1 - Direct Equivalent (Same Series): SFML-110-01-S-D from Samtec Inc. is a direct equivalent within the Tiger Eye™ SFML series, maintaining identical electrical and mechanical specifications with identical mounting type (through hole).

Group 2 - Functional Equivalent (Different Mounting): M50-4301045 from Harwin Inc. (Archer M50 series) provides functional equivalence for the core connector interface (20 positions, 0.050" pitch, 2 rows, gold mating finish) but differs in mounting technology (surface mount vs. through hole) and electrical ratings (1A per contact vs. 3.2A per contact).

Parameter Comparison

Engineering Selection Recommendations

SFML-110-01-S-D Selection Criteria: This substitute is recommended when direct series continuity within Samtec's Tiger Eye™ SFML product line is required. Both parts maintain identical electrical specifications (3.2A per contact, 250VAC), identical mechanical pitch and row spacing, and identical through-hole mounting technology. Both are ROHS3 compliant, REACH unaffected, and rated for -55°C to 125°C operation. This substitute provides equivalent performance with higher inventory availability (1742 pcs vs. 1034 pcs).

M50-4301045 Selection Criteria: This substitute is applicable only when the design can accommodate surface-mount technology instead of through-hole mounting. The M50-4301045 provides the same 20-position, 0.050" pitch interface with gold mating finish and LCP insulation. However, this substitute has reduced current rating (1A per contact vs. 3.2A per contact) and narrower operating temperature range (-40°C to 105°C vs. -55°C to 125°C). Selection of this part requires design verification that the reduced electrical ratings and operating temperature range are acceptable for the application. This substitute is suitable for general purpose, medical, and telecommunications applications where the lower current rating is sufficient.

Frequently Asked Questions (FAQ)

Q: Can SFML-110-01-S-D be used as a direct replacement for SFML-110-T1-S-D? A: Yes. Both connectors are from Samtec's Tiger Eye™ SFML series and maintain identical specifications for connector type, contact type, number of positions (20), pitch (0.050"), row spacing (0.050"), mounting type (through hole), electrical ratings (3.2A per contact, 250VAC), operating temperature range (-55°C to 125°C), and compliance certifications (ROHS3, REACH unaffected, UL94 V-0). The parts are functionally equivalent.

Q: What are the key differences between SFML-110-T1-S-D and M50-4301045? A: The primary differences are: (1) Mounting technology—SFML-110-T1-S-D uses through-hole mounting while M50-4301045 uses surface-mount; (2) Current rating—SFML-110-T1-S-D is rated for 3.2A per contact while M50-4301045 is rated for 1A per contact; (3) Operating temperature—SFML-110-T1-S-D operates from -55°C to 125°C while M50-4301045 operates from -40°C to 105°C; (4) Manufacturer—Samtec Inc. vs. Harwin Inc. Both maintain the same 20-position, 0.050" pitch interface with gold mating finish and LCP insulation.

Q: Can M50-4301045 be used in applications requiring 3.2A per contact? A: No. The M50-4301045 is rated for a maximum of 1A per contact, which is insufficient for applications requiring 3.2A per contact. Use of this part in higher-current applications would exceed the component's electrical rating and create a reliability risk.

Q: Are all three connectors compatible with the same mating connector? A: SFML-110-T1-S-D and SFML-110-01-S-D are compatible with the same mating connectors due to identical pitch (0.050"), row spacing (0.050"), and contact geometry. M50-4301045 shares the same pitch and row spacing but uses surface-mount technology, requiring a different PCB footprint and mating approach than the through-hole mounted parts.

Q: What is the inventory status for each part? A: SFML-110-T1-S-D has 1034 pcs in stock, SFML-110-01-S-D has 1742 pcs in stock, and M50-4301045 has 3907 pcs in stock. All parts are listed as active products with new original inventory available.

Q: Do all three parts meet RoHS and REACH compliance requirements? A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.