SFM-142-T2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-142-T2-STL-D-A-K is an 84-position dual-row high-reliability surface-mount socket strip at 0.050-inch (1.27 mm) pitch with locking retention feature. Designed for robust mezzanine board stacking with worldwide stock.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 84
- Lifecycle
- ACTIVE
- Datasheet
- SFM-142-T2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 84-position dual-row layout at 0.050-inch (1.27 mm) pitch for high-density mezzanine board-to-board signal and power interconnects
- Locking (K) retention feature preventing accidental card separation under vibration or during field servicing in rugged environments
- High-reliability contact design rated for 100+ mating cycles with low contact resistance ensuring signal integrity in demanding applications
Applications
The SFM-142-T2-STL-D-A-K is designed for high-reliability mezzanine board stacking in defense, aerospace, and rugged industrial computing where accidental disconnection must be prevented. Its locking retention feature keeps daughter cards securely mated to carrier boards in high-vibration environments such as airborne electronics and vehicle-mounted systems. The 84-position 0.050-inch pitch format allows dense routing of 42 differential signal pairs alongside power and ground contacts in a compact connector body under 60 mm long.
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 locking mechanism does the SFM-142-T2-STL-D-A-K provide and why does it matter in rugged systems?
The SFM-142-T2-STL-D-A-K incorporates a positive locking retention feature (K suffix) that mechanically secures the mated connector pair against accidental disconnection under vibration loads up to several g. This is critical in military and aerospace applications where board separation during flight or vehicle operation would cause catastrophic system failure, and meets MIL-STD-810 vibration test requirements for airborne equipment.
How many signal pairs can the SFM-142-T2-STL-D-A-K accommodate in a mezzanine board design?
With 84 positions in a dual-row configuration at 0.050-inch (1.27 mm) pitch, the SFM-142-T2-STL-D-A-K can accommodate up to 42 differential signal pairs or a combination of single-ended signals, power rails, and ground returns. This capacity supports high-speed interfaces such as PCIe Gen 2 x8, LVDS video buses, and Gigabit Ethernet connections between a main carrier board and a plug-in processing module.
How does the SFM-142-T2-STL-D-A-K compare to the SFM-148-T2-H-D-A when selecting a mezzanine connector?
The SFM-142-T2-STL-D-A-K has 84 positions versus 96 positions in the SFM-148-T2-H-D-A, making it the better choice when the design requires fewer than 90 contacts and benefits from the locking retention feature to prevent card ejection. The SFM-148 offers 12 additional pins for applications demanding maximum I/O count, while the SFM-142 with K suffix adds mechanical security that the SFM-148 without locking cannot provide in high-vibration environments above 5 g.
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