TFC-123-02-L-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC TFC-123-02-L-D-A-K is a 46-position dual-row Tiger Eye cost-effective terminal strip at 0.050" (1.27 mm) pitch for board-to-board connectivity. It offers 1.0 A per contact current rating with low insertion force contacts for reliable mating in industrial and computing applications. Available with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- TFC-123-02-L-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 46-position dual-row terminal strip at 0.050" (1.27 mm) pitch for cost-effective medium-density board-to-board interconnection
- Tiger Eye contact design ensures consistent low insertion force and reliable electrical contact across all 46 positions
- 1.0 A per contact current rating supports mixed signal routing and light power distribution in a single connector
- Long tail (-L) variant provides additional solder-tail length for improved wave-solder joint formation on thick PCBs
Applications
The TFC-123-02-L-D-A-K is suited for medium-density board stacking in industrial control systems, embedded computing modules, and communication equipment requiring 46-pin connectivity at 1.27 mm pitch. Its long-tail (-L) construction improves solder joint robustness in wave-soldering processes used for thick industrial PCBs or boards with heavy copper weights. FPGA expansion cards and analog signal processing modules also use this connector to route 46-line parallel interfaces between carrier and daughter boards.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What distinguishes the long-tail (-L) version of TFC-123-02-L-D-A-K from standard-tail TFC connectors in a wave-solder process?
The -L suffix designates an extended solder-tail length that protrudes further through the PCB, typically by 1.5 mm to 2.0 mm more than a standard tail. This additional length increases solder fillet height during wave soldering, improving joint strength and reliability on thick PCBs with 2.4 mm or greater board thickness. For boards carrying high vibration loads in industrial equipment, the longer tail provides better mechanical anchoring of the 46-position connector.
How does the 46-position configuration of TFC-123-02-L-D-A-K serve parallel data bus routing in embedded computing?
With 46 positions at 0.050" (1.27 mm) pitch in a dual-row arrangement, this connector supports a 32-bit data bus plus 14 additional lines for address, control, and power signals in a single mated pair. This pin count eliminates the need for multiple smaller connectors on embedded processor expansion boards, reducing PCB footprint and simplifying assembly while keeping all 46 connections within a single compact 1.27 mm pitch housing.
For which cost-sensitive industrial designs is TFC-123-02-L-D-A-K a better procurement choice than higher-reliability SAMTEC SFM series connectors?
TFC-123-02-L-D-A-K is the appropriate choice when the connector will experience fewer than 200 mating cycles, signals operate below 500 MHz, and minimizing BOM cost is a priority. The SFM high-reliability series is warranted only when mating cycles exceed 200, contacts need gold plating for low-resistance sensitive analog signals, or frequency requirements approach 1 GHz. For standard industrial PLC and control card applications within these thresholds, the Tiger Eye design meets requirements at lower cost.
What current capacity can be achieved by bundling multiple contacts in TFC-123-02-L-D-A-K for power rail distribution?
Each contact is individually rated at 1.0 A continuous current. By dedicating multiple adjacent contacts to the same power rail and ensuring parallel current sharing, designers can scale effective current capacity proportionally: 4 contacts yield 4.0 A, 6 contacts yield 6.0 A, and so on. This approach is commonly used in the TFC-123 46-position connector to supply 3.3 V and 5 V power rails alongside signal lines, without needing a separate dedicated power connector in the stack.
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