SFM-120-02-STL-D-A-P-TR SAMTEC Connector (Other) In Stock
SFM-120-02-STL-D-A-P-TR is a 40-position dual-row, 0.050" (1.27 mm) pitch high-reliability surface-mount socket strip from Samtec with polarized female contacts and tin/lead over nickel termination finish. It provides dense, precise mating for high-pin-count board-to-board or mezzanine connections in demanding applications. Available in stock worldwide from authorized distributors.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Category
- Connector
- Price
- From $4.1443(MOQ 1)
- 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 delivers 80 total female contacts in a compact SMT footprint for high-density mezzanine board stacking
- Polarized housing prevents reversed mating across 40 positions, ensuring signal integrity on every insertion in production and field environments
- Tin/lead (Sn/Pb) over nickel (Ni) contact finish provides excellent solderability and long-term corrosion resistance for surface-mount reflow assembly
Applications
The SFM-120-02-STL-D-A-P-TR is designed for high-density mezzanine stacking, FPGA daughter card interfaces, and modular embedded compute platforms where 40-position dual-row socket strips at 0.050" pitch are required. Its polarized SMT construction is well-suited for aerospace, defense, and industrial automation applications that demand consistent signal integrity and mechanical retention across multiple mating cycles.
Specifications
| Factory Lead Time | 6 Weeks, 6 Days |
| YTEOL | 9.4 |
| Additional Feature | POLARIZED |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Termination | Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| JESD-609 Code | e0 |
| MIL Conformance | NO |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| Rated Current (Signal) | 3.2A |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 40 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, Vietnam |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many total contacts does the SFM-120-02-STL-D-A-P-TR provide, and what is its pitch?
The SFM-120-02-STL-D-A-P-TR is a 40-position dual-row socket, providing 80 female contacts total arranged in 2 rows of 40 at a fine 0.050" (1.27 mm) pitch. This high contact density allows it to replace larger through-hole connectors while occupying significantly less PCB area, making it a preferred choice for space-constrained mezzanine and daughter board designs.
Why is polarization important in the SFM-120-02-STL-D-A-P-TR for high-reliability designs?
With 80 contacts on a 0.050" (1.27 mm) pitch, even a single-position mis-alignment during mating would cross-connect signal pairs and potentially damage ICs or corrupt data bus lines. The polarized housing ensures correct orientation every time, which is critical in high-speed digital interfaces where pin 1 alignment must be maintained across dozens of assembly and field-service cycles.
What soldering process and contact finish does the SFM-120-02-STL-D-A-P-TR support?
The SFM-120-02-STL-D-A-P-TR uses tin/lead (Sn/Pb) over a nickel (Ni) barrier contact finish, optimized for standard eutectic solder reflow at temperatures up to 245°C. The Ni barrier layer prevents solder migration into the spring contact zone, maintaining consistent 80-contact insertion force after reflow and enabling reliable solder joints during SMT assembly of high-pin-count boards.
Which alternative Samtec socket strip should I consider if a lead-free (RoHS) finish is required instead of Sn/Pb?
For RoHS-compliant designs needing the same 40-position, 0.050" (1.27 mm) pitch dual-row socket, Samtec offers SFM series variants with pure matte tin (Sn) over nickel finish, which is compatible with lead-free SAC305 reflow processes at peak temperatures up to 260°C. The board footprint and mechanical dimensions remain identical, so the PCB layout change is limited to specifying the lead-free variant in the BOM.
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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 |
|---|---|---|
| 1+ | $18.9100 | $18.91 |
| 50+ | $6.9300 | $346.50 |
| 100+ | $6.2700 | $627.00 |
| 250+ | $4.9699 | $1242.47 |
| 500+ | $4.5743 | $2287.15 |
| 1000+ | $4.1443 | $4144.30 |
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