TFM-102-21-FM-D SAMTEC Connector (Other) In Stock
The TFM-102-21-FM-D is a SAMTEC Tiger Eye high-reliability dual-row terminal strip with a 0.050" (1.27 mm) pitch and 4 positions (2 rows of 2), rated for high-cycle mating applications. Its fine-pitch surface-mount design delivers dependable signal integrity in space-constrained PCBs used in high-density aerospace, defense, medical, and industrial interconnect systems.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TFM-102-21-FM-D Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.050" (1.27 mm) pitch dual-row layout enabling high-density interconnect in space-constrained PCB designs
- Tiger Eye contact system providing high-reliability, low-insertion-force mating for applications requiring thousands of mating cycles
- 4 positions (2 rows of 2) with surface-mount termination for precise automated placement and reflow soldering
- High-reliability construction rated for demanding environments including aerospace, defense, and medical electronics
- Dual-row (D) configuration maximizing signal density within the compact 0.050" pitch footprint
Applications
The TFM-102-21-FM-D is ideal for high-reliability board-to-board and mezzanine interconnects in defense avionics, medical imaging equipment, and high-cycle industrial instrumentation where a compact 0.050" pitch dual-row header must withstand thousands of mating cycles without degrading contact resistance. Its fine-pitch SMT format suits space-critical PCB designs in portable diagnostic devices, satellite subsystems, and ruggedized data acquisition modules requiring dense, dependable 4-pin dual-row connectivity.
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
How does the 0.050" pitch of TFM-102-21-FM-D compare to the standard 0.100" pitch for high-density PCB designs?
At 0.050" (1.27 mm) pitch, the TFM-102-21-FM-D occupies roughly half the board length per pin compared to a standard 0.100" pitch connector. For the 4-position dual-row footprint, this means a connector body approximately 2.54 mm long instead of 5.08 mm, freeing critical board real estate in high-density designs such as miniaturized medical modules or compact avionics subsystems where every square millimeter matters.
In what high-cycle applications does the Tiger Eye contact system in TFM-102-21-FM-D provide a reliability advantage?
SAMTEC's Tiger Eye contact design features a deflecting beam geometry that maintains consistent normal force across thousands of mating cycles, making TFM-102-21-FM-D suitable for test-and-measurement fixtures, removable avionics line-replaceable units (LRUs), and medical device modules that undergo frequent connection and disconnection. The contact system targets applications rated for 500 or more insertion cycles while maintaining contact resistance below 20 mΩ.
What signal integrity characteristics should engineers expect at the 0.050" pitch of TFM-102-21-FM-D for high-speed digital signals?
At 0.050" (1.27 mm) pitch, adjacent pin crosstalk becomes a design consideration for signals above 500 MHz. The TFM-102-21-FM-D's fine-pitch geometry supports differential pair routing across its 4 positions, and the dual-row layout allows one row for signals and one row for ground references, helping control impedance and reduce crosstalk for gigabit-range differential interfaces in compact PCB stacks.
How does sourcing TFM-102-21-FM-D from SAMTEC directly compare to using a distributor for low-to-mid volume procurement?
For quantities below 1,000 pieces, authorized distributors typically offer same-day or next-day shipping on standard 4-position fine-pitch headers like TFM-102-21-FM-D, whereas SAMTEC direct orders may carry a 4- to 8-week lead time for non-stocked configurations. At volumes above 5,000 pieces, direct SAMTEC orders can reduce per-unit cost by 10% to 20% compared to distributor list pricing, and allow custom reel quantities matched to SMT line requirements.
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