TSM-128-03-STL-DH-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-128-03-STL-DH-A-P-TR is a 56-position dual-row surface-mount terminal strip with 0.100" pitch, featuring straight-tail leads, polarization keying, and tape-and-reel packaging for automated SMT production, suited for high-density signal interconnect on embedded computing and industrial PCBs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 56 positions dual-row SMT terminal strip on 0.100" (2.54 mm) pitch for standard grid compatibility
- Straight tail (STL) lead style for consistent co-planarity and reliable solder joint formation
- Polarization (-P) keying prevents incorrect mating orientation in field or production environments
- Tape-and-reel (TR) packaging enables automated high-volume SMT pick-and-place assembly
- Dual-row (DH) layout reduces body length to approximately 28 positions per row, saving PCB space
Applications
The TSM-128-03-STL-DH-A-P-TR is used on embedded processor boards, industrial automation modules, and data acquisition systems where 56 surface-mount signal pins must connect to a mating socket on a 0.100" grid. The combination of straight tails, polarization keying, and tape-and-reel packaging makes it suitable for automated production lines that demand consistent co-planarity and zero mis-mating risk.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the STL designation on TSM-128-03-STL-DH-A-P-TR mean, and why does it matter for SMT solder quality?
The STL suffix indicates straight-tail lead style, where all 56 contact tails project straight down from the body at a uniform standoff height. Straight tails maintain co-planarity within the IPC-7351 tolerance of ±0.1 mm, which ensures consistent solder paste coverage on all 56 pads during reflow and minimizes the risk of cold or lifted solder joints in automated SMT production.
How many signals can TSM-128-03-STL-DH-A-P-TR route in a dual-row layout, and how does that compare with a single-row 56-pin header?
TSM-128-03-STL-DH-A-P-TR carries 56 signals arranged in 2 rows of 28 contacts, with the entire body spanning approximately 2.7 inches at 0.100" row pitch. A single-row 56-pin version at the same pitch would require about 5.5 inches, so the dual-row format roughly halves the connector length while keeping the same 0.100" inter-contact spacing that most routing tools handle automatically.
Can TSM-128-03-STL-DH-A-P-TR be used in designs targeting long-term production where lifecycle continuity is important?
SAMTEC's TSM series is an active product line with broad distribution and multi-year lifecycle commitments, making it a low-risk choice for designs with 5-year or longer production horizons. Buyers should confirm the current lifecycle status with their distributor, but the tape-and-reel format and wide distributor coverage support ongoing MRP planning at volumes from hundreds to tens of thousands of units per year.
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