SFM-135-L1-S-D-A Equivalent & Substitute Parts

Part Overview

The SFM-135-L1-S-D-A is a 70-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFM 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 is rated for 3.2A per contact at 250VAC. The part maintains Active product status with full inventory availability. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing batches and procurement cycles.

Substiute Parts

SFM-135-L1-S-D-A

Samtec Inc.In Stock: 981SFM-135-L1-S-D-A Datasheet

Current PartRFQ

SFM-135-01-S-D-A

Samtec Inc.In Stock: 765SFM-135-01-S-D-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SFM-135-L1-S-D-A has one manufacturer-recommended substitute: SFM-135-01-S-D-A. Both parts are functionally equivalent based on the following critical parameters that determine substitutability:

• Connector type, contact type, and style (Receptacle, Female Socket, Board to Board or Cable)
• Number of positions and row configuration (70 positions, 2 rows)
• Pitch and row spacing (0.050" mating pitch, 0.050" row spacing)
• Mounting and termination method (Through Hole, Solder)
• Electrical ratings (3.2A per contact, 250VAC)
• Operating temperature range (-55°C ~ 125°C)
• Contact materials and finishes (Beryllium Copper with Gold mating finish, Tin post finish)
• Insulation material and flammability (LCP, UL94 V-0)
• Mated stacking heights (identical across both parts)

Both parts share the same base product number (SFM-135) and are classified within the Tiger Eye™ SFM rectangular connector series.

Parameter Comparison

Engineering Selection Recommendations

Both the SFM-135-L1-S-D-A and SFM-135-01-S-D-A are Active products manufactured by Samtec Inc. and maintain full ROHS3 compliance. The parts are electrically and mechanically equivalent across all specified parameters. Selection between these two part numbers should be based on inventory availability and procurement lead times. The SFM-135-L1-S-D-A currently has 929 pieces in stock, while the SFM-135-01-S-D-A has 733 pieces available. Both parts carry identical certifications and regulatory classifications (EAR99, HTSUS 8536.69.4040).

Frequently Asked Questions (FAQ)

Q: Are SFM-135-L1-S-D-A and SFM-135-01-S-D-A directly interchangeable?

A: Yes. Both parts are functionally equivalent receptacle connectors with identical electrical ratings (3.2A per contact, 250VAC), mechanical dimensions (70 positions, 0.050" pitch, 2 rows), contact materials (Beryllium Copper with Gold mating finish), and operating specifications (-55°C ~ 125°C). They share the same base product number (SFM-135) within the Tiger Eye™ SFM series.

Q: What determines substitutability for this connector type?

A: Substitutability is determined by matching connector type (Receptacle), number of positions (70), pitch configuration (0.050" mating pitch with 0.050" row spacing), mounting method (Through Hole), contact finish (Gold mating, Tin post), electrical ratings (3.2A per contact, 250VAC), operating temperature range (-55°C ~ 125°C), and material specifications (Beryllium Copper contacts, LCP insulation, UL94 V-0 flammability rating).

Q: Do these parts have the same packaging?

A: Yes. Both SFM-135-L1-S-D-A and SFM-135-01-S-D-A are supplied in Tube packaging.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry identical regulatory classifications (EAR99, HTSUS 8536.69.4040). The SFM-135-01-S-D-A specifies Moisture Sensitivity Level (MSL) 1 (Unlimited) and REACH Unaffected status, while the SFM-135-L1-S-D-A lists MSL as Not Applicable. These differences do not affect functional compatibility.

Q: Can I use these connectors in high-temperature applications?

A: Both parts are rated for operating temperatures from -55°C to 125°C and carry UL94 V-0 material flammability ratings, making them suitable for industrial and demanding thermal environments within this range.