SFM-127-T2-FM-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-127-T2-FM-D-A-P-TR is a 54-position dual-row surface-mount socket strip with 0.050" (1.27 mm) pitch, polarized and gold-plated for high-reliability mezzanine and board-to-board interconnect in compact SMT designs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- SFM-127-T2-FM-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 SFM-127-T2-FM-D-A-P-TR?
- 54 positions in a dual-row layout for high signal-count board-to-board connectivity
- 0.050" (1.27 mm) pitch enabling dense SMT footprint suitable for space-constrained PCB designs
- Polarized (A) design preventing incorrect mating of all 54 contacts
- Gold-plated (P) contacts providing low contact resistance and long-term corrosion resistance
- Tape-and-reel (TR) packaging for automated high-volume SMT pick-and-place assembly
What is SFM-127-T2-FM-D-A-P-TR used for?
The SFM-127-T2-FM-D-A-P-TR is designed for high-density mezzanine and board-to-board interconnect in networking, embedded computing, and industrial automation systems requiring 54-position signal interfaces. Its polarized, gold-plated contacts ensure reliable assembly and consistent electrical performance across thousands of mating cycles, even in harsh operating environments. The tape-and-reel format makes it well-suited for high-volume production lines using automated SMT placement equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-127-T2-FM-D-A-P-TR datasheet?
SFM-127-T2-FM-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-127-T2-FM-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many signal lines can the SFM-127-T2-FM-D-A-P-TR carry, and what is its contact pitch?
The SFM-127-T2-FM-D-A-P-TR carries 54 signals across its dual-row configuration with 27 contacts per row, at a pitch of 0.050" (1.27 mm). This allows routing 27 differential pairs or 54 single-ended signals in a connector body approximately 34 mm long on the PCB.
What advantages do gold-plated contacts offer in the SFM-127-T2-FM-D-A-P-TR over tin-plated alternatives?
Gold-plated contacts maintain contact resistance below 20 mΩ over extended service, while tin-plated contacts can develop oxide films that increase resistance above 50 mΩ after prolonged exposure to humidity or temperatures above 70°C. For the 54 contacts of this connector, gold plating ensures signal integrity is preserved across all pins throughout the product's service life.
What does the T2 designation mean in the SFM-127-T2-FM-D-A-P-TR, and how does it affect the mating stack height?
The T2 designation refers to a specific lead length variant that sets the board-to-board mating height at approximately 2 mm when mated with a corresponding header. This compact stack height is preferred in slim multi-board assemblies where the gap between two PCBs must be minimized to fit within enclosures with tight vertical clearance.
For a compact industrial I/O board requiring 54 pins at 0.050" pitch, why would a designer choose the SFM-127-T2-FM-D-A-P-TR over a 0.100" pitch through-hole connector?
Switching from a 0.100" pitch through-hole connector to the 0.050" pitch SFM-127-T2-FM-D-A-P-TR roughly halves the connector footprint length from 68 mm to 34 mm for 54 positions, saving more than 15 mm² of board area. Additionally, the SMT format eliminates drilling 54 through-holes per board, reducing PCB fabrication cost and time while enabling automated placement at over 3000 pieces per hour.
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