SFM-121-T2-STL-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-121-T2-STL-D-A-P-TR is a 42-position dual-row high-reliability surface mount socket strip with 0.050" pitch, featuring gold-plated contacts and tape-and-reel packaging for automated SMT assembly. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-121-T2-STL-D-A-P-TR?
- 42-position dual-row socket at 0.050" (1.27 mm) pitch provides high signal density for mezzanine and FMC module interfaces in a compact SMT footprint
- Gold-plated contact finish (A suffix) ensures contact resistance below 20 mΩ and supports over 500 mating cycles, ideal for test fixtures and field-replaceable modules
- Tape-and-reel (TR) packaging enables automated pick-and-place SMT assembly at production volumes exceeding 2,000 units per reel
What is SFM-121-T2-STL-D-A-P-TR used for?
The SFM-121-T2-STL-D-A-P-TR is designed for high-density mezzanine interconnects, FMC (FPGA Mezzanine Card) interfaces, and signal acquisition modules where 42 closely spaced connections are required at 0.050" pitch. Its gold-plated contacts and tape-and-reel packaging make it well suited for high-volume production of test-and-measurement equipment, communications line cards, and embedded computing modules where contact reliability over repeated insertions is critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-121-T2-STL-D-A-P-TR datasheet?
SFM-121-T2-STL-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-121-T2-STL-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the gold contact finish on the SFM-121-T2-STL-D-A-P-TR benefit a high-cycle test fixture application?
The gold-plated contacts (A suffix) on the SFM-121-T2-STL-D-A-P-TR maintain contact resistance below 20 mΩ across more than 500 mating cycles, preventing oxidation-related failures in automated test fixtures where the connector is engaged and disengaged multiple times per day.
What is the total position count and physical layout of the SFM-121-T2-STL-D-A-P-TR?
The SFM-121-T2-STL-D-A-P-TR provides 42 total positions in a dual-row configuration with 21 contacts per row at 0.050" (1.27 mm) pitch. The contact field spans approximately 27 mm in length and 2.5 mm in row-to-row spacing, fitting standard 0.050" mezzanine PCB footprints.
For an FMC (FPGA Mezzanine Card) application, why would a designer choose the SFM-121-T2-STL-D-A-P-TR over a 0.100" pitch socket?
FMC carrier board standards require 0.050" pitch connectors to accommodate up to 160 signal pins in a 30 mm × 10 mm area. The SFM-121-T2-STL-D-A-P-TR at 0.050" pitch allows 42 signals in the same linear space that would carry only 21 signals with a 0.100" connector, meeting FMC module density requirements.
What is the advantage of tape-and-reel packaging for the SFM-121-T2-STL-D-A-P-TR in a contract manufacturing environment?
Tape-and-reel packaging places each SFM-121-T2-STL-D-A-P-TR connector in a 24 mm carrier pocket, enabling uninterrupted automated pick-and-place at placement rates above 5,000 components per hour with less than 0.1% placement error, versus tray-fed manual loading that can slow output by 50% or more.
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About SAMTEC
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