TFM-139-32-S-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TFM-139-32-S-D-A-P-TR is a high-reliability Tiger Eye dual-row terminal strip connector with 0.050 inch pitch and 78 pins, featuring straight through-hole termination and polarized keying for accurate assembly. Tape-and-reel packaging supports automated pick-and-place manufacturing. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TFM-139-32-S-D-A-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TFM-139-32-S-D-A-P-TR?
- Tiger Eye dual-row contact design at 0.050 inch (1.27 mm) pitch provides 78 pins in a compact straight through-hole configuration for high-density board-to-board signal interconnect
- Straight (S suffix) through-hole termination ensures strong mechanical solder joint retention, supporting connectors in systems exposed to vibration and shock in industrial or aerospace environments
- Polarized keying (-A-P) and tape-and-reel (TR) packaging prevent orientation errors during automated pick-and-place assembly, reducing rework on high-volume PCB production lines
What is TFM-139-32-S-D-A-P-TR used for?
The TFM-139-32-S-D-A-P-TR is suited for straight through-hole board-to-board and mezzanine card interconnect in high-reliability applications such as aerospace avionics, industrial automation controllers, and high-speed computing modules. Its 78-pin dual-row Tiger Eye contact system at 0.050 inch pitch supports dense signal buses on FPGA and DSP carrier boards where routing area is limited. The polarized keying and robust through-hole solder termination ensure both assembly accuracy and long-term mechanical integrity under demanding operating conditions.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-139-32-S-D-A-P-TR datasheet?
TFM-139-32-S-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-139-32-S-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the straight termination of TFM-139-32-S-D-A-P-TR differ from the horizontal variant TFM-139-32-H-D-A-P-TR in PCB layout?
The straight (S suffix) termination means the connector pins exit perpendicular to the PCB surface, suitable for vertical board-to-board mating stacks where two boards are parallel and separated by the connector height. The horizontal (H suffix) variant routes pins parallel to the board surface for edge-card or right-angle mating. For standard mezzanine card stacking applications with 78 pins at 0.050 inch pitch, the straight version minimizes the overall stack footprint.
What signal integrity advantages does the 0.050 inch pitch TFM-139-32-S-D-A-P-TR offer for high-speed digital buses compared to 0.100 inch pitch connectors?
At 0.050 inch (1.27 mm) pitch, the TFM-139-32-S-D-A-P-TR reduces propagation delay variation between adjacent signal pairs and supports shorter stub lengths compared to 0.100 inch alternatives. For differential pairs operating above 1 GHz, the tighter pin spacing reduces skew accumulation across the 78-pin array, enabling reliable high-speed bus connections in FPGA, DDR memory, and SerDes interface designs.
In which procurement scenario is TFM-139-32-S-D-A-P-TR the appropriate choice over a non-polarized variant?
Polarized keying is mandatory when the 78-pin connector is used in systems assembled by operators or in field environments where incorrect orientation could reverse voltage rails or high-speed differential pairs. For circuit boards carrying 1.8 V or 3.3 V logic signals across all 78 contacts, a 180-degree mating error would apply reverse voltage to FPGA I/O banks, causing immediate device damage. The -A-P keying physically prevents this scenario at zero added assembly cost.
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