TFM-125-32-S-D-LC SAMTEC Connector (Other) In Stock
SAMTEC TFM-125-32-S-D-LC is a 50-position dual-row high-reliability Tiger Eye terminal strip with 0.050" (1.27 mm) pitch for surface-mount vertical PCB mounting. Features matte tin over nickel contact finish and split board lock for secure mechanical retention. Available in short lead times for industrial and high-density board interconnect applications worldwide.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Datasheet
- TFM-125-32-S-D-LC Datasheet PDF
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Tiger Eye contact design provides high normal force and reliable electrical connection in 50-position 0.050" pitch dual-row surface-mount terminal strips
- Split board lock (LC) feature secures the connector mechanically to the PCB, preventing misalignment during mating and unmating cycles
- Matte tin over nickel mating contact finish balances cost and corrosion resistance for long-term reliability in industrial and telecom applications
Applications
The TFM-125-32-S-D-LC is used in high-density board-to-board and backplane interconnect applications within telecommunications equipment, industrial control systems, and server infrastructure where 50 signal positions must be routed in a compact 0.050" pitch layout. Its vertical SMT mounting and split board lock ensure secure seating during vibration and mechanical stress encountered in rack-mounted and ruggedized enclosures. The short lead time and Tiger Eye contact reliability make it a preferred choice for production designs requiring consistent mating performance over thousands of connection cycles.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 1Week |
| YTEOL | 9.4 |
| Additional Feature | NONE |
| Board Mounting Option | SPLIT BOARD LOCK |
| Body Breadth | 0.225inch |
| Body Depth | 0.44inch |
| Body Length | 1.375inch |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | MATTE TIN OVER NICKEL (50) |
| Contact Finish Termination | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | NOT SPECIFIED |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 1.27mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 3.2A |
| Reference Standard | UL, CSA |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 50 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions and what pitch does the TFM-125-32-S-D-LC support, and how does this affect signal routing density?
The TFM-125-32-S-D-LC provides 50 positions in a dual-row layout on a 0.050" (1.27 mm) pitch, delivering very high signal density within a 1.375 inch body length. This fine pitch allows designers to route 50 signals in roughly half the board space required by a 0.100" pitch connector, making it well-suited for compact board-to-board interfaces in telecommunications and data center equipment.
What does the LC suffix in TFM-125-32-S-D-LC indicate and why is it valuable in mechanical assemblies?
The LC suffix designates the split board lock feature, which adds mechanical retention posts that anchor the connector body to the PCB. This board lock prevents the connector from shifting or lifting under the mating force of inserting a 50-position mating header, improving soldering registration accuracy and providing robustness against vibration in rack-mounted or field-deployed industrial systems.
What is the contact finish on the TFM-125-32-S-D-LC mating interface and what environments is it rated for?
The mating contacts of the TFM-125-32-S-D-LC are plated with matte tin (50 µin) over a nickel barrier, providing adequate corrosion resistance for indoor industrial environments. This finish supports insertion cycles typical of board-to-board connector applications and performs reliably in temperature ranges from -55°C to +125°C, making the connector suitable for telecom, server, and general-purpose industrial board interconnects.
How does the TFM-125-32-S-D-LC compare to through-hole alternatives for 50-position 0.050" pitch interconnects?
Unlike through-hole terminal strips that require drilled vias and increase PCB layer stackup complexity, the TFM-125-32-S-D-LC surface-mount design eliminates via drilling and allows routing of signal traces on both sides of the PCB beneath the connector footprint. The vertical orientation and 0.050" pitch provide equivalent or higher signal density than through-hole variants while reducing PCB fabrication cost, particularly for multilayer designs with 50 or more differential signal pairs.
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