TSM-139-05-T-DV-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-139-05-T-DV-P-TR is a 78-position dual-row surface mount terminal strip on a 2.54 mm / .100" pitch with through-hole tails for board-to-cable or board-to-board applications. Gold-plated contacts and a polarized housing prevent mis-mating in dense interconnect assemblies. From $3.80 in stock worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TSM-139-05-T-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-139-05-T-DV-P-TR?
- 78 dual-row positions (2×39) on a 2.54 mm / .100" pitch with T-style through-hole tails for reliable wave-solder or reflow assembly on mixed-technology PCBs
- DV (dual-voltage) and P (polarization) features prevent incorrect cable mating across all 78 contacts, reducing field wiring errors in multi-board systems
- Gold-plated contact finish provides low and stable contact resistance across the rated operating temperature range, suitable for industrial I/O and backplane applications
What is TSM-139-05-T-DV-P-TR used for?
The TSM-139-05-T-DV-P-TR is suited for industrial backplane and I/O expansion interfaces where 78 signals must be routed across a keyed, dual-row 2.54 mm pitch terminal strip with polarized cable-to-board mating. Its mixed through-hole tail and surface-mount body style supports boards that combine SMT component placement with selective wave-solder operations, common in PLC, industrial drive, and embedded computing module designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-139-05-T-DV-P-TR datasheet?
TSM-139-05-T-DV-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-139-05-T-DV-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the pin count and pitch of the TSM-139-05-T-DV-P-TR and how does the dual-row layout help signal density?
The TSM-139-05-T-DV-P-TR provides 78 positions arranged as 2 rows of 39 on a 2.54 mm / .100" pitch. The dual-row arrangement doubles signal density compared to a single-row connector of the same board length, allowing 78 signals to traverse a connector footprint that a single-row alternative would require nearly 100 mm to accommodate.
What assembly method does the TSM-139-05-T-DV-P-TR T-tail support and how does it differ from full SMT connectors?
The T-style tail is a through-hole pin that passes through the PCB and is soldered from the opposite side, providing stronger mechanical pull-out strength than a surface-mount pad alone. This hybrid body-SMT, tail-through-hole approach suits mixed-technology boards where the connector must survive cable tension forces exceeding 10 N while other components are placed and reflowed before selective wave soldering of the through-hole tails.
How does the P (polarization) feature on TSM-139-05-T-DV-P-TR prevent wiring errors in multi-board systems?
The P designation adds a keying feature to the connector housing that physically prevents insertion of a mating cable plug in the reversed orientation. In a system with multiple 78-pin connectors of similar appearance, polarization ensures that each cable can only connect to its intended socket, preventing signal shorts and damage from reverse-polarity connections during board bring-up, maintenance, or field replacement of subsystem modules.
How does TSM-139-05-T-DV-P-TR compare in position count to the TSM-140-05 variant for system expansion planning?
TSM-139-05-T-DV-P-TR provides 78 positions (2×39) while the TSM-140-05 offers 80 positions (2×40), a difference of just 2 contacts and approximately 2.54 mm in connector length. Designers choose between them based on the exact required signal count; the 78-pin variant suits interfaces with 3 lanes of 26 signals or 6 banks of 13, while the 80-pin version fits 4 lanes of 20 or 2 banks of 40.
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