STMM-108-02-G-D-SM SAMTEC Connector (Other) In Stock
SAMTEC STMM-108-02-G-D-SM is a 16-position dual-row board-stacking receptacle connector with gold over nickel contact plating for reliable board-to-board signal interconnects. The 0.050" pitch SM surface-mount body measures 0.873" long with a 3-week factory lead time. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- STMM-108-02-G-D-SM 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
- 16-position dual-row board stacking receptacle at 0.050" pitch with gold (20µin) over nickel (50µin) contact plating for low contact resistance and corrosion resistance
- Body dimensions of 0.873" × 0.257" × 0.24" enable compact board-to-board stacking interconnects in high-density PCB assemblies with SM surface-mount termination
- RoHS compliant with lead-free contact finish and Pb-free board termination, meeting REACH compliance requirements for global electronic equipment markets
Applications
The STMM-108-02-G-D-SM is designed for board-to-board stacking applications in compact electronic systems where multiple PCBs must be electrically and mechanically connected in parallel or mezzanine configurations. It is used in communication modules, embedded computing platforms, and RF transceiver assemblies where 16 signal contacts at 0.050" pitch provide high density interconnect within a 0.873" board footprint. The gold-plated contacts make it suitable for low-level signal applications in medical imaging equipment, test instrumentation, and space-constrained portable devices requiring reliable multi-cycle mating performance.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 3Weeks |
| YTEOL | 8 |
| Body Breadth | 0.257inch |
| Body Depth | 0.24inch |
| Body Length | 0.873inch |
| Body/Shell Style | RECEPTACLE |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (20) OVER NICKEL (50) |
| Contact Finish Termination | Gold (Au) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e4 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.079inch |
| Mating Contact Row Spacing | 0.079inch |
| 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 | 4.6482mm |
| Plating Thickness | 20u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 3A |
| Reference Standard | UL |
| Terminal Pitch | 2mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 16 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact plating specification does STMM-108-02-G-D-SM use and how does it affect contact resistance over mating cycles?
STMM-108-02-G-D-SM uses 20 microinch gold over 50 microinch nickel plating on mating contacts, and gold over nickel plating on termination. The 20µin gold layer provides contact resistance typically below 20 milliohms, maintaining stable low-resistance connections over a minimum of 100 mating cycles. The nickel underlayer prevents gold migration and acts as a barrier against copper diffusion from the base contact material, ensuring consistent electrical performance in board stacking applications.
For an RF or high-frequency signal design, how many signal contacts does STMM-108-02-G-D-SM provide in its 0.873" body length?
STMM-108-02-G-D-SM provides 16 total signal contacts in a dual-row configuration (8 positions per row) at 0.050" (1.27mm) pitch, within a body length of 0.873 inch (22.17mm). This gives a contact density of approximately 18 contacts per inch, suitable for parallel data bus connections in FPGA daughter cards, DSP modules, and RF baseband interfaces where signal integrity at pitches below 1.5mm is critical for frequencies up to several hundred MHz.
What is the typical lead time for STMM-108-02-G-D-SM and how should procurement planning accommodate this?
SAMTEC lists a factory lead time of 3 weeks for STMM-108-02-G-D-SM under standard ordering conditions. For production planning, buyers should add 3 weeks to their component arrival target date when ordering directly from SAMTEC without distributor stock. For orders requiring delivery in under 3 weeks, checking authorized distributor inventory first is recommended, as distributors may carry buffer stock of this 16-position dual-row 0.050" board stacking receptacle for faster fulfillment.
How does STMM-108-02-G-D-SM body size compare to equivalent 16-position board stacking connectors at 0.100" pitch?
At 0.050" (1.27mm) pitch with a 0.873" body length, STMM-108-02-G-D-SM occupies approximately half the board length of a 16-position connector at 0.100" (2.54mm) pitch, which would require approximately 1.75" for the same 16 contacts. The 0.257" body breadth and 0.24" depth of STMM-108-02-G-D-SM also reduce the PCB keep-out area, enabling a 40% to 50% smaller connector footprint compared to the 0.100" pitch alternative while maintaining the same 16-pin dual-row dual-row signal count.
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