SFM-123-T2-STL-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-123-T2-STL-D-A-P-TR is a 46-position dual-row high-reliability surface-mount socket strip with 0.050 inch (1.27 mm) pitch, featuring polarizing, board-lock retention, and tape-and-reel packaging for automated assembly. Available worldwide from stock.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-123-T2-STL-D-A-P-TR?
- 46 positions (23 per row) at 0.050 inch pitch delivering high contact density in a compact SMT form factor
- A (polarizing) key preventing incorrect orientation during mating to protect 46-pin signal interfaces
- P (press-fit board lock) retention posts securing the connector body during reflow soldering up to 260 °C
- Tape-and-reel (TR) packaging enabling automated pick-and-place SMT assembly for high-volume production
What is SFM-123-T2-STL-D-A-P-TR used for?
The SFM-123-T2-STL-D-A-P-TR is used in rugged embedded computing, defense module interconnects, and high-density test-and-measurement systems requiring 46 dual-row contacts at 1.27 mm pitch with secure mechanical retention. Its polarization and board-lock features make it ideal for field-replaceable daughtercard designs where mis-insertion protection and solder joint alignment are critical manufacturing requirements.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-123-T2-STL-D-A-P-TR datasheet?
SFM-123-T2-STL-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-123-T2-STL-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the P suffix on SFM-123-T2-STL-D-A-P-TR provide, and how does it improve solder joint quality?
The P suffix denotes press-fit board lock posts that insert into PCB holes and mechanically retain the connector during reflow soldering at up to 260 °C peak temperature. Without board locks, a 46-pin SMT connector can shift or tilt on the paste-printed board during oven transport, causing pad misalignment and solder bridges across the 1.27 mm pitch contacts. The P retention posts prevent this movement, improving yield on high-density dual-row assemblies.
For a 46-pin mezzanine interface at 0.050 inch pitch, what PCB footprint length does SFM-123-T2-STL-D-A-P-TR require?
With 23 contacts per row at 0.050 inch (1.27 mm) pitch, the SFM-123-T2-STL-D-A-P-TR contact field spans approximately 29.2 mm in length per row, with dual rows separated by 2.54 mm (0.100 inch) centerline spacing. The full SMT footprint including body margins extends to roughly 32 mm x 6 mm, fitting within the keep-out envelope of small mezzanine cards and FPGA expansion modules requiring 46 signal paths.
How does the A polarizing feature on SFM-123-T2-STL-D-A-P-TR reduce assembly errors in dual-row connectors?
The A polarizing feature introduces a physical asymmetry — typically a keying bump or notch — that prevents the 46-pin socket from engaging unless oriented correctly with the mating header. This eliminates 180-degree rotational mis-insertion that would reverse all 46 signals, potentially damaging 3.3 V or 5 V logic devices. In automated assembly and field service environments, this passive protection reduces rework rates and protects sensitive downstream ICs.
What production advantages does tape-and-reel packaging provide for SFM-123-T2-STL-D-A-P-TR in an SMT line?
Tape-and-reel (TR) packaging loads each SFM-123-T2-STL-D-A-P-TR into a standardized carrier tape compatible with IEC 60286-3 reel dimensions of 7 inch or 13 inch diameter, allowing pick-and-place machines to place connectors at over 500 components per hour with repeatable accuracy. This eliminates manual loading, reduces per-unit handling time, and maintains connector orientation consistency across the 46 pins during high-volume PCB production runs.
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About SAMTEC
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