STMM-105-02-G-D-SM SAMTEC Connector (Other) In Stock
STMM-105-02-G-D-SM is a 10-position dual-row board-stacking plug connector from SAMTEC with 2 mm pitch and 20 µin gold-over-nickel contacts for reliable mating. Measuring 16.15 mm x 6.53 mm x 4.83 mm, it serves compact mezzanine and module stack applications with RoHS-compliant materials. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- STMM-105-02-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
- 10 positions (2x5) at 2 mm pitch in a board-stacking plug configuration routes 10 signal or power channels across stacked PCBs in a body of just 16.15 mm x 6.53 mm
- 20 µin gold-over-50 µin nickel contact finish on both mating face and termination provides durable low-resistance connections across hundreds of mating cycles
- Surface-mount (-SM) termination integrates into standard reflow SMT assembly without through-hole drilling, reducing PCB fabrication cost
- RoHS-compliant (Pbfree Code: Yes) construction meets global environmental regulations for commercial, industrial, and export-controlled programs
Applications
The STMM-105-02-G-D-SM is designed for compact board-to-board stacking interfaces in wireless modules, sensor mezzanines, and embedded computing daughter cards where 10 signals must be reliably routed between two boards at 2 mm pitch. Its plug form factor mates with SAMTEC STMM receptacles to create a controlled-height board stack suitable for portable instruments and IoT node assemblies. Gold contact finish and RoHS compliance qualify it for consumer electronics, medical wearables, and industrial automation modules requiring consistent electrical performance over the product life.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 10Weeks |
| YTEOL | 8 |
| Body Breadth | 0.257inch |
| Body Depth | 0.19inch |
| Body Length | 0.636inch |
| Body/Shell Style | PLUG |
| 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 | POLYAMIDE |
| 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 | 10 |
| 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
How many signal positions does STMM-105-02-G-D-SM provide and at what contact pitch?
The STMM-105-02-G-D-SM provides 10 positions arranged in 2 rows of 5 contacts at a 2 mm pitch. Its body measures 16.15 mm in length and 6.53 mm in width, making it a compact choice for routing 10 signal or power lines across a board-stacking interface in space-constrained module designs.
What contact finish does STMM-105-02-G-D-SM use and how does that affect mating reliability?
The mating contacts are plated with 20 µin (microinches) of gold over a 50 µin nickel barrier. This gold-on-gold mating interface provides contact resistance well below 50 mΩ per contact and resists oxidation, maintaining reliable signal integrity over hundreds of engagement cycles in humidity and temperature cycling environments.
Can STMM-105-02-G-D-SM be assembled using standard surface-mount reflow soldering?
Yes. The -SM designation indicates surface-mount termination compatible with standard lead-free SAC305 reflow profiles peaking at 260°C. The connector sits on an IPC-7351 compliant land pattern and can be placed by automated pick-and-place equipment, eliminating through-hole drilling for lower PCB fabrication cost in medium- to high-volume production runs.
Which receptacle does STMM-105-02-G-D-SM mate with to complete a board-stacking assembly?
STMM-105-02-G-D-SM mates with the corresponding SAMTEC STMM series receptacle at 2 mm pitch and 2-row, 5-position-per-row configuration. The mated stack height depends on the selected receptacle post length, with options typically ranging from 6 mm to 20 mm to accommodate component clearance requirements between the two boards.
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