TSM-126-04-F-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-126-04-F-DH-A-K-TR is a 52-position, 2.54 mm pitch dual-row surface mount terminal strip connector with friction lock and key polarization. It provides secure, polarized mating for high-density PCB interconnects in automated assembly lines. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 52
- Lifecycle
- ACTIVE
- Datasheet
- TSM-126-04-F-DH-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 TSM-126-04-F-DH-A-K-TR?
- 52-position dual-row layout on 2.54 mm (0.100") pitch for maximum signal density in compact PCB footprints
- Friction lock (F) and key polarization (K) prevent accidental disconnection and incorrect mating orientation
- Tape-and-reel (TR) packaging enables automated pick-and-place SMT assembly at high production volumes
- Gold-plated (A) contacts deliver low contact resistance and corrosion resistance for long service life
What is TSM-126-04-F-DH-A-K-TR used for?
TSM-126-04-F-DH-A-K-TR is ideal for backplane interconnects, FPGA development boards, and high-density signal routing in embedded computing systems where 52 signals must be reliably routed across a 2.54 mm pitch header. The friction lock and key polarization features make it especially suitable for industrial automation panels and test equipment racks requiring error-proof plug-in modules. Its gold-plated contacts support demanding environments with frequent mate-unmate cycles exceeding 30 operations.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-126-04-F-DH-A-K-TR datasheet?
TSM-126-04-F-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-126-04-F-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the key polarization (K) feature on TSM-126-04-F-DH-A-K-TR prevent miswiring in a 52-pin connector?
The key polarization (K) on TSM-126-04-F-DH-A-K-TR physically blocks incorrect insertion by adding an asymmetric keying feature that aligns only with a properly keyed mating receptacle. With 52 positions across 2 rows on a 2.54 mm pitch, this is critical in dense PCB assemblies where reversing a connector could damage circuits operating at voltages up to 3.3 V or 5 V. The key reduces field wiring errors significantly in production environments.
What contact plating does TSM-126-04-F-DH-A-K-TR use, and how does it affect connector longevity?
TSM-126-04-F-DH-A-K-TR features gold-plated (A suffix) contacts, which provide a contact resistance typically below 20 milliohms and resist oxidation even in humid or mildly corrosive environments. Gold plating is rated for hundreds of mate-unmate cycles, making this 52-position connector suitable for test fixture sockets and removable daughtercard interfaces where repeated connection is expected. This plating also ensures reliable signal integrity at low-voltage logic levels such as 1.8 V and 3.3 V.
For a high-density FPGA daughtercard design, how many signal lines can TSM-126-04-F-DH-A-K-TR carry per row?
TSM-126-04-F-DH-A-K-TR provides 52 positions total in a dual-row (DH) format, delivering 26 pins per row on a 2.54 mm (0.100 inch) pitch. For an FPGA daughtercard, this translates to up to 48 I/O signals plus 4 power or ground pins per connector, enabling a compact interface footprint. Its friction lock retains the mating connector securely during vibration common in industrial computing enclosures.
What is the production packaging format for TSM-126-04-F-DH-A-K-TR, and how many units fit per reel?
TSM-126-04-F-DH-A-K-TR ships in tape-and-reel (TR) format, which is compatible with standard SMT pick-and-place machines operating at placements speeds exceeding 10,000 components per hour. Reel quantities for SAMTEC TSM series connectors in TR format typically range from 100 to 500 units per reel depending on connector size, providing efficient bulk supply for volume PCB production runs.
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