TSM-127-01-S-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-127-01-S-DH-A-K-TR is a 54-position single-row surface-mount terminal strip with 0.100" (2.54 mm) pitch and dual-height (DH) mating post option for elevated board clearance. Kinked (K) tail termination anchors the connector during reflow, while tape-and-reel packaging enables automated SMT assembly. Compatible with SAMTEC SSQ and SFM socket series for reliable board-to-board connections.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- TSM-127-01-S-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-127-01-S-DH-A-K-TR?
- 54-position single-row 0.100" (2.54 mm) pitch SMT header providing 54 independent signal connections in a linear footprint ideal for long-edge connectors
- Dual-height (DH) post option delivering extra clearance between stacked boards to accommodate tall components on the mating PCB
- Kinked (K) tail termination mechanically securing the 54-pin connector body to PCB pads during 260°C SMT reflow to ensure uniform solder joints
- Tape-and-reel (TR) format enabling high-throughput pick-and-place automated assembly on standard SMT production lines
What is TSM-127-01-S-DH-A-K-TR used for?
The TSM-127-01-S-DH-A-K-TR is suited for single-row edge connector applications in SBC (Single Board Computer) expansion headers, industrial I/O module interfaces, and Arduino or Raspberry Pi shield connectors requiring 54 pins at 0.100" pitch. Its dual-height post accommodates board stacks where components between the boards exceed standard clearance, making it ideal for computing and instrumentation stacks. Design engineers select this kinked-tail variant for high-volume SMT production lines where positional accuracy of all 54 solder joints is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-127-01-S-DH-A-K-TR datasheet?
TSM-127-01-S-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-127-01-S-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the single-row configuration of the TSM-127-01-S-DH-A-K-TR affect PCB layout compared to a dual-row variant with the same pin count?
The single-row (S) layout arranges all 54 contacts in a single line at 0.100" (2.54 mm) pitch, resulting in a connector body approximately 135 mm long but only one row wide. This is preferable for PCB edge connectors or when board-to-board mating requires contacts along a single edge, while a dual-row alternative carrying 54 pins would be about half the length but require 2 rows of pads.
What is the benefit of the kinked tail termination on the 54-position TSM-127-01-S-DH-A-K-TR during SMT assembly?
The kinked (K) tail creates a press-fit interference with the PCB solder pad before reflow, preventing the long 54-pin connector body from shifting during the 260°C peak reflow cycle. Without this retention, thermal expansion in a connector spanning over 130 mm could cause misalignment of end pins relative to the PCB pads, resulting in open or cold solder joints.
Which mating socket family pairs with the TSM-127-01-S-DH-A-K-TR in a board-stack application?
SAMTEC's SSQ-127 series single-row 0.100" pitch sockets are the primary mating partner, offering wire-wrap, through-hole, and SMT termination styles. For higher reliability exceeding 500 mating cycles, the SFM high-reliability series with gold-plated contacts rated below 20 mΩ can be adapted with matching pitch, supporting 54-pin signal connections in demanding industrial stack assemblies.
When should a designer choose TSM-127-01-S-DH-A-K-TR over a lower-profile TSM variant without the DH option?
The DH (dual-height) option should be selected when components on the mating board (such as tall electrolytic capacitors above 5 mm or heat sinks above 3 mm) would otherwise contact the header connector body in a standard-height stack. The DH post raises the mating interface by typically 2 mm to 4 mm, providing the necessary clearance in 54-pin 0.100" pitch stacking assemblies without changing the PCB footprint or solder pad layout.
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