STMM-120-02-FM-D-SM-K-TR SAMTEC Connector (Other) In Stock
SAMTEC STMM-120-02-FM-D-SM-K-TR is a 40-position dual-row surface mount terminal strip on a 2.00 mm pitch with a fine-mated FM contact style. It features gold-plated contacts and is packaged on tape and reel for high-volume automated SMT assembly. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STMM-120-02-FM-D-SM-K-TR?
- 40-position dual-row layout on 2.00 mm pitch provides high signal density for board-to-board and cable-to-board interconnects
- Fine-mated (FM) contact style delivers positive engagement and low contact resistance for reliable digital and analog signal transmission
- Gold-plated contacts ensure corrosion resistance and maintain contact resistance below 20 milliohms across rated mating cycles
- Tape and reel (TR) packaging supports automated pick-and-place assembly for high-volume SMT production lines
What is STMM-120-02-FM-D-SM-K-TR used for?
STMM-120-02-FM-D-SM-K-TR is suited for daughtercard-to-motherboard interconnects, embedded computing modules, and industrial control backplanes requiring a 40-position dual-row surface mount connector on a 2.00 mm pitch. Its fine-mated contact ensures reliable mating in vibration-prone environments such as robotics controllers and automotive-adjacent test equipment. The tape and reel format enables efficient high-volume production at standard SMT reflow temperatures.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the STMM-120-02-FM-D-SM-K-TR datasheet?
STMM-120-02-FM-D-SM-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for STMM-120-02-FM-D-SM-K-TR?
Compatible alternatives and drop-in replacements for STMM-120-02-FM-D-SM-K-TR:
Board Connector, 40 Contact(s), 2 Row(s), Male, Straight, Surface Mount Terminal
Board Stacking Connector, 40 Contact(s), 2 Row(s), Male, Straight, 0.079 inch Pitch, Surface Mount Terminal, Locking
Frequently Asked Questions
What pitch and total position count does the STMM-120-02-FM-D-SM-K-TR provide?
STMM-120-02-FM-D-SM-K-TR uses a 2.00 mm pitch in a dual-row arrangement with 20 positions per row, giving 40 total positions. This dual-row 2.00 mm layout is common in embedded module and industrial backplane applications where higher pin density than 2.54 mm connectors is needed.
How does the fine-mated (FM) contact style of STMM-120-02-FM-D-SM-K-TR improve connector reliability?
The fine-mated contact style provides a controlled wipe length and contact force of approximately 100 grams per pin, ensuring positive electrical engagement and a contact resistance below 20 milliohms. This reduces intermittent connection issues in vibration environments such as robotics and industrial motor drives.
Is STMM-120-02-FM-D-SM-K-TR compatible with standard lead-free reflow soldering?
Yes. STMM-120-02-FM-D-SM-K-TR is a surface mount connector on tape and reel (TR) and is compatible with lead-free reflow soldering at peak temperatures up to 260°C per IPC/JEDEC J-STD-020. Gold-plated contacts maintain solder joint integrity and wettability through the reflow cycle.
Which mating connector series pairs with STMM-120-02-FM-D-SM-K-TR for a board-to-board stack?
STMM-120-02-FM-D-SM-K-TR is designed to mate with SAMTEC FTSH or TSW dual-row header series on a 2.00 mm pitch, enabling board-to-board stack heights configurable from approximately 4 mm to over 20 mm depending on the mating header height selected.
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