SFM-124-L2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock

Name: SFM-124-L2-ZZ-D-A-K-TR
Brand: SAMTEC
SKU: SFM-124-L2-ZZ-D-A-K-TR
Availability: InStock

Samtec SFM-124-L2-ZZ-D-A-K-TR is a 48-position, 0.050-inch pitch dual-row high-reliability surface-mount socket strip with right-angle termination and polarization key. Designed for high-density board-to-board or board-to-cable mating with gold-plated contacts for dependable low-resistance connections. Available in tape-and-reel packaging with worldwide in-stock distribution.

ACTIVEConnectorVerified Jun 2026

Package / Visual Reference

SFM-124-L2-ZZ-D-A-K-TROther

Quick Facts

Manufacturer: SAMTEC
Package: Other
Pin Count: 48
Lifecycle: ACTIVE
Datasheet: SFM-124-L2-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-124-L2-ZZ-D-A-K-TR?

48-position dual-row SMT socket on ultra-fine 0.050 inch (1.27 mm) pitch for high-density layouts
Right-angle (L2) termination enables board-edge or side-exit mating in space-constrained enclosures
Polarization key (K) prevents incorrect mating orientation, reducing assembly errors in multi-connector designs
Tape-and-reel (TR) packaging supports automated SMT pick-and-place for high-volume production

What is SFM-124-L2-ZZ-D-A-K-TR used for?

The SFM-124-L2-ZZ-D-A-K-TR is used in high-density mezzanine and daughter-card interconnects for embedded computing platforms, FPGA expansion boards, and communications modules where a 0.050-inch pitch saves significant PCB area compared with 0.100-inch alternatives. Its right-angle profile suits rack-mounted equipment where cables must exit parallel to the PCB surface within tight backplane clearances. The keyed polarization and high-reliability gold contacts make it suitable for defense, aerospace, and industrial systems that demand consistent performance over thousands of mating cycles.

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)

Where can I find the SFM-124-L2-ZZ-D-A-K-TR datasheet?

SFM-124-L2-ZZ-D-A-K-TR Datasheet Download

Official datasheet from SAMTEC

What are equivalent replacements for SFM-124-L2-ZZ-D-A-K-TR?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How does the 0.050-inch pitch of SFM-124-L2-ZZ-D-A-K-TR compare with standard 0.100-inch headers in terms of board space savings?

At 0.050-inch (1.27 mm) pitch, the SFM-124-L2-ZZ-D-A-K-TR occupies roughly half the footprint length of an equivalent 0.100-inch connector with the same 48-position count. A 48-position dual-row 0.050-inch socket spans approximately 30 mm, versus about 60 mm for a 0.100-inch version, enabling significant PCB area savings in compact embedded computing and FPGA expansion card designs.

What does the ZZ suffix indicate for SFM-124-L2-ZZ-D-A-K-TR in terms of contact or plating options?

The ZZ suffix in Samtec's SFM series designates a no-option or default plating configuration, typically indicating gold-plated contacts over a nickel underplate for the mating interface. Gold plating ensures low contact resistance below 20 milliohms, prevents oxidation over time, and supports reliable signal integrity across thousands of mating cycles, which is critical for removable daughter cards in industrial and test-and-measurement systems.

Can SFM-124-L2-ZZ-D-A-K-TR mate with Samtec TFM or TSM series headers, and what should I check before designing it in?

The SFM series mates with Samtec's corresponding 0.050-inch pitch header series such as the TFM family. Before designing the SFM-124-L2-ZZ-D-A-K-TR, verify the mating header's pitch (1.27 mm), row count (dual-row), and position count (24 per row, 48 total) align with your header choice. Also confirm the right-angle exit angle (L2) suits your PCB-to-cable or board-to-board geometry, as a vertical version would require a different suffix.

Is SFM-124-L2-ZZ-D-A-K-TR suitable for high-speed differential signals in FPGA or SerDes applications?

The SFM-124-L2-ZZ-D-A-K-TR can support moderate-speed differential signals; however, for SerDes links above 3 Gbps, Samtec's high-speed controlled-impedance connectors (such as the FireFly or SEARAY series at 50 ohms) are recommended. The SFM series is better suited to general-purpose I/O and low-speed differential buses such as LVDS at frequencies up to a few hundred MHz on a 1.27 mm pitch layout.

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Lead Time3-7 business days

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“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

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CTO, AutoDrive Systems, Italy

SFM-124-L2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock

What are the key features of SFM-124-L2-ZZ-D-A-K-TR?

What is SFM-124-L2-ZZ-D-A-K-TR used for?

Compliance & Regulatory

Where can I find the SFM-124-L2-ZZ-D-A-K-TR datasheet?

What are equivalent replacements for SFM-124-L2-ZZ-D-A-K-TR?

Frequently Asked Questions

How does the 0.050-inch pitch of SFM-124-L2-ZZ-D-A-K-TR compare with standard 0.100-inch headers in terms of board space savings?

What does the ZZ suffix indicate for SFM-124-L2-ZZ-D-A-K-TR in terms of contact or plating options?

Can SFM-124-L2-ZZ-D-A-K-TR mate with Samtec TFM or TSM series headers, and what should I check before designing it in?

Is SFM-124-L2-ZZ-D-A-K-TR suitable for high-speed differential signals in FPGA or SerDes applications?

Related Guides

STM32H753VIT6 High-Performance MCU Design Guide

STM32H753ZIT6 Selection Guide for High-Performance Embedded Systems

ICL7660ACPAZ Negative Voltage Charge Pump Design Guide

C0402C103K3RACTU 10 nF MLCC Design Guide

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About SAMTEC

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