SFM-121-T2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-121-T2-ZZ-D-A-K-TR is a 42-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface-mount applications. It features T2 tail length, ZZ end-peg options, key alignment, and tape-and-reel packaging with gold-plated contacts rated to 1 A per pin. From $1.10 in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- SFM-121-T2-ZZ-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-121-T2-ZZ-D-A-K-TR?
- 42-position dual-row socket strip with 0.050" (1.27 mm) pitch and T2 extended tail length for improved solder joint strength in high-vibration SMT applications
- Key alignment (K) feature prevents incorrect mating orientation, reducing assembly errors in dual-row 42-position configurations during automated board build
- Gold-plated contacts rated up to 1 A per pin and operating temperature range from -55°C to +125°C, ensuring long-term high-reliability performance in harsh environments
What is SFM-121-T2-ZZ-D-A-K-TR used for?
The SFM-121-T2-ZZ-D-A-K-TR is designed for high-density mezzanine board interconnects in aerospace, defense, and industrial electronics where 42 signals must be reliably routed through a 0.050" pitch SMT socket strip. The T2 tail variant provides longer solder tails for stronger surface-mount joints under mechanical stress, making it suitable for vibration-rated equipment assemblies. Tape-and-reel packaging supports automated pick-and-place assembly for high-volume production of communication modules and embedded processor boards.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-121-T2-ZZ-D-A-K-TR datasheet?
SFM-121-T2-ZZ-D-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-121-T2-ZZ-D-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the T2 suffix mean in SFM-121-T2-ZZ-D-A-K-TR, and how does it improve joint reliability?
The T2 suffix designates an extended solder tail length on the SFM-121-T2-ZZ-D-A-K-TR, providing a longer contact foot compared to the standard T1 tail. This extended tail increases solder fillet height by approximately 0.5 mm, improving shear strength at the joint and making the connector more resistant to thermal cycling and mechanical vibration in aerospace and defense equipment rated to -55°C to +125°C.
For a 42-channel FPGA interface PCB, why would SFM-121-T2-ZZ-D-A-K-TR be preferred over a single-row socket of equivalent position count?
A dual-row 42-position socket at 0.050" pitch routes all 42 signals in a connector body approximately 27 mm long, whereas a single-row 42-position connector at the same pitch would require roughly 54 mm. The SFM-121-T2-ZZ-D-A-K-TR saves about 27 mm of PCB edge, which is critical in compact FPGA mezzanine cards and SOM carrier boards where header space is limited.
Can SFM-121-T2-ZZ-D-A-K-TR be assembled in high-volume production, and what packaging supports this?
Yes, the TR suffix confirms the SFM-121-T2-ZZ-D-A-K-TR ships in tape-and-reel format, directly compatible with standard SMT pick-and-place equipment operating at throughputs above 5,000 placements per hour. The key (K) alignment post prevents 180-degree mis-orientation during placement, reducing defect rates in high-volume runs involving tens of thousands of units per production lot.
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About SAMTEC
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