SFM-121-02-FM-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-121-02-FM-D-A-K-TR is a 42-position dual-row surface mount socket strip with 0.050" (1.27 mm) pitch and high-reliability gold-plated contacts. It features a low-profile SMT design for dense board-to-board mezzanine interconnects. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- SFM-121-02-FM-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-121-02-FM-D-A-K-TR?
- 42-position dual-row layout with 0.050" (1.27 mm) pitch for high-density SMT board interconnects
- High-reliability gold-plated contacts rated for multiple mating cycles in demanding environments
- Surface mount termination compatible with standard reflow solder and pick-and-place assembly
- Low-profile design minimizes stack height in mezzanine and daughter card applications
What is SFM-121-02-FM-D-A-K-TR used for?
The SFM-121-02-FM-D-A-K-TR is used in mezzanine board-to-board interconnect assemblies where 42 signal positions are required in a compact 1.27 mm pitch SMT format. It is well-suited for embedded computing modules, data acquisition cards, and FPGA daughter boards where reliable high-density signal connections are critical. Its dual-row configuration maximizes pin count per unit length of PCB edge, supporting efficient signal routing in rack-mount and box-build systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-121-02-FM-D-A-K-TR datasheet?
SFM-121-02-FM-D-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-121-02-FM-D-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions and what pitch does the SFM-121-02-FM-D-A-K-TR socket strip provide?
The SFM-121-02-FM-D-A-K-TR provides 42 positions arranged in a dual-row configuration with a 0.050" (1.27 mm) pitch. This layout delivers 21 signal positions per row in a compact length, making it suitable for high-density board-to-board connections in embedded computing and data acquisition systems where PCB space is limited.
What assembly method does the SFM-121-02-FM-D-A-K-TR use, and how does it fit into automated production?
The SFM-121-02-FM-D-A-K-TR uses surface mount technology (SMT) termination, compatible with standard pick-and-place equipment and reflow solder ovens. No through-hole drilling is required for the 42-position footprint, reducing PCB fabrication cost and supporting high-volume automated assembly on 1.27 mm pitch land patterns.
In which board-to-board applications does the SFM-121-02-FM-D-A-K-TR deliver the best performance?
This 42-position, 0.050" pitch SMT socket excels in mezzanine interconnects between a main board and a daughter card, such as FPGA expansion boards, processor modules, and industrial I/O cards. Its dual-row design at 1.27 mm pitch supports up to 42 signal lines in a short connector body, enabling compact stack heights below 8 mm in most mating configurations.
How does the SFM-121-02-FM-D-A-K-TR compare to a 2 mm pitch dual-row connector for the same signal count?
Compared to a 2 mm pitch dual-row connector carrying 42 positions, the SFM-121-02-FM-D-A-K-TR at 1.27 mm pitch reduces the connector body length by approximately 35%, freeing significant PCB real estate. The 0.050" pitch also allows finer escape routing on inner PCB layers, which is advantageous on 4-layer to 6-layer boards with dense via fields adjacent to the connector footprint.
Related Guides
STM32H753VIT6 High-Performance MCU Design Guide
Practical STM32H753VIT6 design guidance for power, clocks, memory, DMA, PCB layout, bring-up, and production recovery.
Aug 3, 2026
STM32H753ZIT6 Selection Guide for High-Performance Embedded Systems
Select the STM32H753ZIT6 by evaluating compute, memory, LQFP144 pinout, power, interfaces, security, and sourcing requirements.
Aug 3, 2026
ICL7660ACPAZ Negative Voltage Charge Pump Design Guide
Design a reliable ICL7660ACPAZ negative rail with capacitor equations, layout rules, startup checks, and practical troubleshooting.
Aug 2, 2026
C0402C103K3RACTU 10 nF MLCC Design Guide
Practical guidance for applying the C0402C103K3RACTU 10 nF, 25 V X7R MLCC in decoupling, filtering, timing, and EMI-control networks.
Aug 2, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
10214-6212PC
3M
Connector
1778573
Phoenix Contact
Connector
5227222-3
TE Connectivity
Connector
S4B-XH-SM4-TB(LF)(SN)
JST (JAPAN SOLDERLESS TERMINALS)
Connector
185226-2
TE Connectivity
Connector
0533980571
Molex
Connector
0360-0-15-01-34-27-10-0
Mill-Max
Connector
7850-0006PR
3M
Connector
AVB 1,5/2/12
BLOCK
Connector
N3764-5002RB
3M
Connector
N3627-6002RB
3M
Connector
N3627-5002RB
3M
Connector
N3440-6002RB
3M
Connector
929715-03-36-I
3M
Connector
929667-02-36-I
3M
Connector
929665-04-36-I
3M
Connector
929665-02-36-I
3M
Connector
929647-04-36-I
3M
Connector
929647-03-36-I
3M
Connector
7834-0006PR
3M
Connector
7826-0006PR
3M
Connector
7820-0006PR
3M
Connector
3440-5002
3M
Connector
3433-5302
3M
Connector