SFM-120-02-STL-D SAMTEC Connector (Other) In Stock
SAMTEC SFM-120-02-STL-D is a 40-position dual-row high-reliability surface-mount socket strip with 0.050" (1.27 mm) pitch, featuring gold-plated mating contacts (30 micro-inches) and tin/lead-over-nickel termination finish. The 1.155-inch body length and female contact gender make it suitable for precision board-to-board mating in aerospace, defense, and industrial computing applications requiring low contact resistance.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- SFM-120-02-STL-D Datasheet PDF
- Category
- Connector
- Price
- From $4.1866(MOQ 19)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40-position dual-row socket with 0.050" (1.27 mm) pitch for high-density board-to-board connections
- Gold (30 micro-inch) mating contact finish for low resistance and long mating cycle reliability
- Tin/Lead (Sn/Pb) over nickel (Ni) termination finish for robust solder joint formation
- Female contact gender in a 1.155-inch body, compatible with SAMTEC SFM/TFM header series
- Surface-mount construction supporting automated reflow assembly on standard SMT lines
Applications
The SFM-120-02-STL-D is a preferred choice for high-reliability board-to-board interconnects in aerospace avionics, defense systems, medical instrumentation, and industrial test equipment. Its 40-position dual-row layout and gold mating contacts provide consistent low-resistance connections across multiple mating cycles, making it well suited for daughtercard socket assemblies and compact embedded computing platforms.
Specifications
| Pbfree Code | Yes |
| YTEOL | 9.4 |
| Body Breadth | 0.145inch |
| Body Depth | 0.185inch |
| Body Length | 1.155inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (30) |
| Contact Finish Termination | Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | PHOSPHOR BRONZE/BERYLLIUM COPPER |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| JESD-609 Code | e0 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.7178mm |
| Plating Thickness | 30u inch |
| Rated Current (Signal) | 3.2A |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 40 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | USA, Vietnam |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SFM-120-02-STL-D:
Samtec Inc Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator, Socket
Samtec Inc Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator, Socket
Samtec Inc Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator, Socket
Samtec Inc Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Locking, Black Insulator, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Surface Mount Terminal, Socket
Frequently Asked Questions
What contact finish does the SFM-120-02-STL-D use for mating, and why does it matter for reliability?
The SFM-120-02-STL-D uses a gold (30 micro-inch) mating contact finish across all 40 positions. Gold provides corrosion resistance and maintains low contact resistance through hundreds of mating cycles, making it critical for high-reliability aerospace and defense applications.
What are the body dimensions of the SFM-120-02-STL-D, and how does its size fit compact PCB designs?
The SFM-120-02-STL-D has a body length of 1.155 inches, breadth of 0.145 inch, and depth of 0.185 inch. This compact envelope accommodates 40 dual-row contacts at 0.050" pitch, enabling high-density board-to-board connections in space-constrained PCB layouts.
When should engineers choose the SFM-120-02-STL-D over socket strips with tin-only mating contacts?
Engineers should select the SFM-120-02-STL-D when long-term reliability across 40 signal paths is critical, such as in aerospace or defense systems subjected to vibration and humidity. The 30 micro-inch gold mating finish outperforms tin-only contacts in corrosion resistance and insertion-cycle durability.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $7.3368 | $139.40 |
| 50+ | $6.7100 | $335.50 |
| 100+ | $6.0300 | $603.00 |
| 500+ | $5.0284 | $2514.20 |
| 1000+ | $4.6331 | $4633.13 |
| 2000+ | $4.1866 | $8373.18 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”