TSM-139-01-STL-DV-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-139-01-STL-DV-P-TR is a 78-position dual-row .100" pitch surface mount terminal strip with straight through-hole tails and polarization for reliable mating orientation. Gold-plated contacts rated to 3 A per pin operate across -55°C to +125°C for industrial environments. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TSM-139-01-STL-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-STL-DV-P-TR?
- 78-position dual-row .100" (2.54 mm) pitch SMT terminal strip with straight tails for high pin-count board-to-board signal and power distribution
- Gold-plated contacts rated at 3 A per pin providing reliable low-contact-resistance connections across all 78 positions in industrial and embedded applications
- Polarization key prevents reverse mating on stacked card assemblies, eliminating costly assembly errors in multi-slot industrial chassis designs
What is TSM-139-01-STL-DV-P-TR used for?
The TSM-139-01-STL-DV-P-TR is used in stackable PCB card assemblies, industrial I/O expansion backplanes, and embedded computing modules where a 78-position dual-row SMT connector with mating polarization is required. Its .100" pitch aligns with legacy backplane standards used in test and measurement equipment and industrial PLC expansion racks, allowing direct interoperability with existing .100" receptacle systems. The straight through-hole tails improve mechanical stability during SMT reflow and support automated assembly in high-reliability manufacturing environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-139-01-STL-DV-P-TR datasheet?
TSM-139-01-STL-DV-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-139-01-STL-DV-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions does the TSM-139-01-STL-DV-P-TR provide and what row arrangement enables its high-density connectivity?
The TSM-139-01-STL-DV-P-TR offers 78 positions arranged in a dual-row layout on a .100" (2.54 mm) pitch, providing 39 pins per row. This dual-row configuration is standard for legacy .100" backplane form factors used in industrial PLC expansion, embedded SBC stacking, and test equipment I/O planes where maximising pin count within a fixed connector length is a design requirement.
What is the per-pin current rating of the TSM-139-01-STL-DV-P-TR and how does this support mixed power and signal pin assignments?
Each of the 78 pins on the TSM-139-01-STL-DV-P-TR carries up to 3 A continuous current with gold-plated contacts. In mixed-use connector assignments where a subset of pins distributes 5 V or 3.3 V power rails alongside digital signal lines, the 3 A per-pin rating ensures dedicated power pins can supply up to several amperes total without requiring a separate power connector, simplifying backplane wiring harness design.
How does the TSM-139-01-STL-DV-P-TR compare to the 82-position TSM-141 series for a backplane application with exactly 78 signals?
When a design requires exactly 78 signal and power connections, the TSM-139-01-STL-DV-P-TR eliminates the 4 unused pins present on a TSM-141 82-position connector. Fewer unused positions mean a shorter connector body length at the same .100" pitch, which can save several millimetres of board edge in compact chassis designs. Both share the same 3 A per-pin, -55°C to +125°C specifications, so the choice is driven purely by the required pin count and available PCB length.
What operating temperature range does the TSM-139-01-STL-DV-P-TR support and what certifications make it suitable for industrial use?
The TSM-139-01-STL-DV-P-TR operates from -55°C to +125°C, a 180°C span that satisfies industrial temperature class requirements for IEC 60068 environmental testing. The gold-plated contacts maintain stable contact resistance across this full range, making the connector suitable for outdoor industrial enclosures, transportation electronics, and military-adjacent embedded systems where extended-temperature reliability is mandated.
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