SFM-124-T2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-124-T2-ZZ-D-A-K-TR is a 48-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch in surface-mount configuration with kinked (K) tail option for enhanced solder retention. Gold-plated contacts ensure low contact resistance over 1000+ mating cycles in dense interconnect designs. Tape-and-reel packaging supports high-volume automated PCB assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- SFM-124-T2-ZZ-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-124-T2-ZZ-D-A-K-TR?
- 48-position dual-row 0.050" (1.27 mm) pitch SMT socket strip enabling high-density 24-per-row signal routing for complex board-to-board interconnects
- Kinked (K) tail termination providing mechanical retention during reflow soldering to prevent connector movement before solder solidification
- Gold-plated phosphor bronze contacts rated for 1000+ mating cycles with contact resistance below 20 mΩ for high-reliability signal integrity
- Tape-and-reel (TR) packaging supporting automated pick-and-place assembly on standard SMT lines with reflow profiles up to 260°C
What is SFM-124-T2-ZZ-D-A-K-TR used for?
The SFM-124-T2-ZZ-D-A-K-TR is ideal for high-density mezzanine and daughter-card interconnects in telecommunications equipment, FPGA evaluation boards, and industrial computing systems where 48 signal lines must pass through a compact 0.050" pitch dual-row SMT connector. Its kinked tail option improves solder joint reliability in high-vibration environments such as industrial automation and ruggedized computing. Design engineers select this SAMTEC high-reliability socket for applications requiring stable 2-row interconnects over thousands of insertion and removal cycles.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-124-T2-ZZ-D-A-K-TR datasheet?
SFM-124-T2-ZZ-D-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-124-T2-ZZ-D-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why does the SFM-124-T2-ZZ-D-A-K-TR include a kinked (K) tail termination and when is it important?
The kinked tail creates a mechanical interference fit with the PCB pad during the reflow process, preventing the connector from shifting or tilting before solder solidification. For the 48-position SFM-124 with a long connector body, this is particularly important because thermal expansion during 260°C reflow can cause connectors without retention features to move, degrading the solder joint quality across all 48 pins.
How many signal positions does the SFM-124-T2-ZZ-D-A-K-TR support and how are they distributed?
The connector provides 48 total positions arranged in a dual-row layout with 24 contacts per row, all on a 0.050" (1.27 mm) pitch. This arrangement allows 48 independent signals to route through a compact SMT footprint, making it one of the higher-density options in SAMTEC's SFM series for board stacking and expansion card applications.
For which board-to-board stack height requirements is the SFM-124-T2-ZZ-D-A-P-TR versus SFM-124-T2-ZZ-D-A-K-TR selected?
The -K suffix (kinked tail) addresses solder joint integrity rather than stack height. Stack height is determined by the mating header post length and shroud; SAMTEC offers various mating TSM or TFM headers with posts from 1.5 mm to 11 mm, so engineers can select the appropriate mating header to achieve the needed PCB-to-PCB board separation while using the same 48-pin SFM-124 socket.
What is a lower-cost alternative to the SFM-124-T2-ZZ-D-A-K-TR when mating cycle count is below 200?
SAMTEC's TFC or SSQ series in matching 0.050" pitch with 48 positions offer a cost-effective alternative for applications requiring fewer than 200 mating cycles, such as one-time daughter-card assembly or prototype boards. The SFM-124 high-reliability series is the better investment when mating cycles exceed 500 or when the operating environment includes vibration or temperatures above 85°C.
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