TSM-139-01-TM-DV-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-139-01-TM-DV-P-TR is a 78-position dual-row surface mount terminal strip with 0.100" (2.54 mm) pitch and through-mount (TM) contact style. It provides 3 A per contact current rating in a dual-row SMT package for board interconnect. Available in tape and reel with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TSM-139-01-TM-DV-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-139-01-TM-DV-P-TR?
- 78-position dual-row layout at 0.100" (2.54 mm) pitch maximizes connection density for signal and power distribution on standard-pitch SMT board headers
- Through-mount (TM) contact style with SMT leads allows precise coplanarity control during reflow soldering for reliable solder joint formation across all 78 positions
- Tape and reel (TR) packaging enables high-volume automated pick-and-place assembly compatible with standard lead-free reflow profiles up to 260°C
What is TSM-139-01-TM-DV-P-TR used for?
The TSM-139-01-TM-DV-P-TR is used in embedded computing modules, industrial backplane assemblies, and test fixture interfaces where a 78-position dual-row 2.54 mm pitch SMT connector is needed for dense board-to-board or wire-to-board signal distribution. Its through-mount contact style is particularly suited for applications requiring high mechanical retention strength combined with surface mount PCB attachment in vibration-prone environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-139-01-TM-DV-P-TR datasheet?
TSM-139-01-TM-DV-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-139-01-TM-DV-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the through-mount (TM) contact style of the TSM-139-01-TM-DV-P-TR differ from a standard SMT-only terminal strip?
The through-mount (TM) contact style in the TSM-139-01-TM-DV-P-TR adds mechanical anchor pins that pass through the PCB and are soldered on the bottom side, complementing the SMT leads on the surface. This dual-anchor approach increases pull-out force resistance compared to SMT-only strips, making the 78-position connector suitable for cable-attached or mating-force applications where repeated insertion and removal cycles over the product lifetime require stronger mechanical retention.
What current rating does each contact support in the TSM-139-01-TM-DV-P-TR, and how does this influence pin assignment in a mixed-signal design?
Each contact in the TSM-139-01-TM-DV-P-TR carries up to 3 A continuously, which allows designers to assign dedicated power pins within the 78-position dual-row layout alongside signal lines. For a 3.3 V power rail requiring 6 A, two adjacent power contacts can be paralleled, while the remaining 76 positions handle digital or analog signals, all within the same 2.54 mm pitch connector without requiring a separate power connector.
Can the TSM-139-01-TM-DV-P-TR withstand lead-free reflow soldering without deforming its housing?
Yes, the TSM-139-01-TM-DV-P-TR thermoplastic housing is rated for lead-free reflow solder profiles with peak temperatures of 260°C, and the tape and reel (TR) packaging ensures all 78 contacts are positioned correctly on the carrier tape for automated pick-and-place placement before reflow. The through-mount anchor pins provide additional mechanical stability during the reflow cycle, preventing connector shift on the PCB during solder paste liquidus.
What alternatives should be considered when the 78-position TSM-139-01-TM-DV-P-TR has more positions than a design requires?
When fewer than 78 positions are needed, designers can consider the SAMTEC TSM-138 series (76 positions) or step down to TSM-130 (60 positions) or TSM-120 (40 positions) variants, all sharing the same 0.100" (2.54 mm) dual-row pitch and SMT footprint family. Selecting the correct position count minimizes unused pads on the PCB and reduces connector cost, since shorter TSM variants with 20 to 50 positions are typically priced lower per unit than the 78-position TSM-139 series.
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