SFM-120-03-S-D-N Equivalent & Substitute Parts

Part Overview

The SFM-120-03-S-D-N is a 40-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFM series, designed for board-to-board or cable applications. This rectangular connector features 0.050" (1.27mm) pitch mating with gold-plated contacts and through-hole solder termination. The part is currently active in production with 1014 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector series, enabling design flexibility and supply chain optimization.

Substiute Parts

SFM-120-03-S-D-N

Samtec Inc.In Stock: 1116SFM-120-03-S-D-N Datasheet

Current PartRFQ

SFM-120-03-S-D

Samtec Inc.In Stock: 2640SFM-120-03-S-D Datasheet

SimilarRFQ

SFM-120-03-S-D-LC

Samtec Inc.In Stock: 1052SFM-120-03-S-D-LC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFM-120-03-S-D-N are identified based on strict equivalence of the following critical parameters:

• Connector type (Receptacle)
• Contact type (Female Socket)
• Number of positions (40)
• Pitch - mating (0.050" / 1.27mm)
• Number of rows (2)
• Row spacing - mating (0.050" / 1.27mm)
• Mounting type (Through Hole)
• Termination method (Solder)
• Contact finish - mating (Gold)
• Current rating (3.2A per Contact)
• Voltage rating (250VAC)
• Operating temperature range (-55°C ~ 125°C)
• Material flammability rating (UL94 V-0)
• RoHS compliance (ROHS3 Compliant)

The identified substitutes maintain these core electrical and mechanical parameters. Variations in moisture sensitivity level (MSL) and fastening features do not affect functional interchangeability for standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SFM-120-03-S-D-N, SFM-120-03-S-D, and SFM-120-03-S-D-LC—are active products from Samtec Inc. with ROHS3 compliance and EAR99 export classification. They are functionally equivalent for standard rectangular connector applications requiring 40-position, 0.050" pitch receptacle connectors with gold-plated mating contacts and 3.2A per contact current capacity.

Selection between these parts should be based on:

• Availability: SFM-120-03-S-D offers the highest inventory (2629 units)
• Feature requirements: SFM-120-03-S-D-LC includes board lock feature for enhanced mechanical retention
• Moisture sensitivity: SFM-120-03-S-D specifies MSL 1 (Unlimited), while SFM-120-03-S-D-N and SFM-120-03-S-D-LC are not applicable for MSL

All parts maintain identical electrical performance, temperature range, and flammability ratings suitable for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can SFM-120-03-S-D be used as a direct replacement for SFM-120-03-S-D-N?

A: Yes. Both parts maintain identical electrical and mechanical specifications including connector type, position count, pitch, current rating, voltage rating, and operating temperature range. The primary difference is moisture sensitivity level classification, which does not affect functional interchangeability in standard applications.

Q: What is the difference between SFM-120-03-S-D-LC and the other variants?

A: SFM-120-03-S-D-LC includes a board lock feature for enhanced mechanical retention during mating cycles. All other electrical and mechanical parameters remain identical to SFM-120-03-S-D and SFM-120-03-S-D-N.

Q: Are all three parts compatible with the same mating connectors?

A: Yes. All three receptacle connectors share identical pitch (0.050"), row spacing (0.050"), contact type (female socket), and fastening type (push-pull), ensuring compatibility with the same plug connectors from the Tiger Eye™ SFM series.

Q: What are the mated stacking heights for these connectors?

A: The mated stacking heights are 6.02mm, 6.17mm, 7.80mm, 7.95mm, 9.58mm, 9.73mm, 11.48mm, and 11.63mm, depending on the mating connector configuration selected.

Q: Do these parts require special handling for moisture sensitivity?

A: SFM-120-03-S-D specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. SFM-120-03-S-D-N and SFM-120-03-S-D-LC are classified as not applicable for MSL, meaning standard handling procedures apply.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and suitable for applications requiring lead-free component specifications.