TFM-125-02-L-D SAMTEC Connector (Other) In Stock
SAMTEC TFM-125-02-L-D is a high-reliability Tiger Eye dual-row terminal strip with 0.050 inch (1.27 mm) pitch, gold-over-nickel mating contacts, and phosphor bronze construction for board stacking applications. The 1.375 inch body length fits 50 positions in a compact 0.225 inch wide profile. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Datasheet
- TFM-125-02-L-D 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
- 0.050 inch (1.27 mm) pitch dual-row Tiger Eye terminal strip delivers 50 contact positions in a 1.375 x 0.225 inch footprint for high-density board stacking
- Gold-over-nickel (Au/Ni) mating contact finish on phosphor bronze contacts ensures reliable low-resistance mating and high durability across hundreds of mating cycles
- RoHS-compliant tin-over-nickel termination enables lead-free reflow soldering, compatible with standard SMT assembly processes for high-volume production
Applications
The TFM-125-02-L-D is used in mezzanine board stacking, daughter card assemblies, and high-density backplane interconnects in telecom, networking, and test instrumentation systems. Its 0.050 inch pitch and dual-row configuration allow 50 signals to be routed between boards in a minimal 1.27 mm pitch footprint. The Tiger Eye contact geometry and gold plating make it reliable for applications requiring consistent signal integrity over repeated mate-unmate cycles.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 3Weeks |
| YTEOL | 8.75 |
| Body Breadth | 0.225inch |
| Body Length | 1.375inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD OVER NICKEL |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| 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 | GUIDE SLOT |
| Mounting Option 2 | 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 | 15u 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 |
| 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
Compatible alternatives and drop-in replacements for TFM-125-02-L-D:
Board Stacking Connector, 50 Contact(s), 2 Row(s), Male, Straight, 0.05 inch Pitch, Surface Mount Terminal
Frequently Asked Questions
How many signals can TFM-125-02-L-D carry and what is the contact pitch?
TFM-125-02-L-D accommodates 50 contact positions in a dual-row layout at 0.050 inch (1.27 mm) pitch, with 25 contacts per row across a 1.375 inch body length. This makes it well-suited to high-signal-count board stacking interfaces in computing and networking hardware where space between boards is limited.
What makes the Tiger Eye contact design of TFM-125-02-L-D preferable for repeated mating in test equipment?
SAMTEC's Tiger Eye geometry uses a dual-beam wiping contact that maintains consistent normal force across the full contact width, achieving lower and more stable contact resistance than single-beam designs, typically targeting under 20 mΩ per contact. This is especially valuable in bench test equipment and ATE sockets subjected to hundreds of board insertions and removals per year.
Is TFM-125-02-L-D suitable for RoHS-compliant production lines, and how long is the typical factory lead time?
Yes, the TFM-125-02-L-D is marked Pb-free (RoHS compliant), with tin-over-nickel termination contacts that meet standard lead-free reflow soldering profiles up to 260°C. SAMTEC lists a typical factory lead time of 3 weeks for this part, so procurement teams should plan buffer stock when scheduling high-volume SMT production runs.
When would an engineer choose TFM-125-02-L-D over a 2.54 mm pitch board stacking connector?
At 0.050 inch (1.27 mm) pitch, TFM-125-02-L-D occupies roughly half the board length of a comparable 2.54 mm pitch connector for the same 50-position signal count. This size advantage is decisive for compact mezzanine designs in networking line cards, embedded computing, or instrument modules where both board area and inter-board stack height are tightly constrained.
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