SFM-120-02-S-D-A SAMTEC Connector (Other) In Stock
Samtec SFM-120-02-S-D-A is a 40-position dual-row socket board connector with Tiger Eye ELP contacts, 30 µin gold over 50 µin nickel contact finish, and positioning-pin PCB mount. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- SFM-120-02-S-D-A Datasheet PDF
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Tiger Eye ELP dual-beam contacts with 30 µin gold over 50 µin nickel finish for reliable low-resistance mating
- Dual-row 40-position socket configuration with positioning pin for accurate PCB alignment
- RoHS-compliant construction with 0.050" (1.27 mm) pitch for high-density board-to-board socket connections
Applications
The SFM-120-02-S-D-A is used as a mating socket for TFC and SFM series header strips in board-to-board and daughter-card assemblies requiring 40 positions with gold-plated contact reliability. Its Tiger Eye ELP contacts and positioning pin make it suitable for laboratory instruments, embedded computing mezzanine cards, and test fixtures where repeatable low-resistance connections over multiple mating cycles are essential.
Specifications
| Pbfree Code | Yes |
| YTEOL | 9.4 |
| Additional Feature | E.L.P., TIGER EYE CONTACT |
| Board Mounting Option | POSITIONING PIN |
| Body Breadth | 0.145inch |
| Body Depth | 0.18inch |
| Body Length | 1.125inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (30) OVER NICKEL (50) |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 15mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Durability | 10000Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | .695N |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| 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 | 2.7432mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZED HOUSING |
| Reference Standard | UL, CSA |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 40 |
| Withdrawl Force-Min | .556N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Costa Rica, Vietnam |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact finish does the SFM-120-02-S-D-A use, and how does it affect connector reliability over repeated mating cycles?
The SFM-120-02-S-D-A contacts are plated with 30 µin (0.76 µm) gold over 50 µin nickel, providing excellent corrosion resistance and maintaining low contact resistance below 20 mΩ over hundreds of mating cycles. This gold-over-nickel finish is particularly important in test-fixture and instrumentation applications where the connector mates and de-mates dozens of times per day.
How does the positioning pin feature of SFM-120-02-S-D-A improve PCB assembly accuracy for dual-row 40-position connectors?
The positioning pin mechanically locates the SFM-120-02-S-D-A into matching PCB holes before soldering, preventing rotational misalignment across the 40-position 1.27 mm pitch layout. Proper alignment is critical at 1.27 mm pitch because even a 0.3 mm lateral shift can cause multiple pins to miss their pads, making the positioning pin essential for reliable reflow-soldered or hand-soldered assembly.
Which header series is the SFM-120-02-S-D-A designed to mate with for board-to-board signal connections?
The SFM-120-02-S-D-A is designed to mate with Samtec TFC and compatible 0.050" (1.27 mm) pitch header strips that provide 40 positions in a dual-row layout. This socket-header pair supports signal frequencies up to several hundred MHz for parallel data buses, making the combination suitable for FPGA expansion, memory module, and high-speed digital mezzanine card applications.
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