NXP reveals world’s smallest logic package with the largest pads

New ‘Diamond’ package solves critical space issues in mobile device design

NXP Semiconductors N.V. has announced the new SOT1226 “Diamond” package – the world’s smallest general-purpose logic package, featuring a unique pad pitch design. Measuring at 0.8 x 0.8 x 0.35-mm, the new SOT1226 is a leadless plastic package 25-percent smaller than the SOT1115, previously the world’s smallest logic package, also from NXP.

Despite its smaller package size, the SOT1226 saves engineers time and costs by offering a 0.5-mm pad pitch that is 50-percent larger for easier soldering. Ideally suited for leading-edge portable devices such as smartphones where PCB space is critical, the unique form factor of the Diamond package enables device miniaturization by offering a space-saving logic solution without the added manufacturing costs associated with smaller pad pitch patterns.

Typical manufacturing processes for packages use a small 0.3-mm or 0.35-mm pad pitch, requiring Electronic Manufacturing Services (EMS) and assembly houses to use a step-down mask in order to successfully mount the devices on the PCB. Due to the Diamond package’s larger 0.5-mm pad pitch, a step-down mask is not needed during the soldering process, saving costs for the manufacturer. In addition, the larger pad pitch of the Diamond package offers greater contact area, resulting in easier component placement, as well as improved joint strength and robustness, while reducing the risk of short circuits. With larger pad pitches, PCB assemblers can thus avoid costly mistakes such as solder bridging, or the formation of accidental bridges between contacts, which can render electrical devices useless.

“Mobile designers are constantly faced with the challenge of adding more functionality and features into portable devices while using less space, which in turn introduces new challenges,” said Kristopher Keuser, director of marketing, Logic business line, NXP Semiconductors. “NXP’s new Diamond package is a game-changing solution that allows our customers to design within smaller geometries without increasing manufacturing costs, and to standardize their entire product portfolio. It underscores our commitment to leadership, innovation and understanding of a market that is driven by the need for smaller, cheaper and more reliable solutions.”

50 Years of Logic: Pushing the Trend in Miniaturization

NXP Semiconductors is deeply committed to the logic market and continually invests in new process and package technologies, as well as packaging facilities, to offer a leading-edge portfolio. Over the last 50 years, the NXP logic business – starting as Signetics and then Philips Semiconductors – has supported growing global demand for logic. As the No. 1 volume supplier in the world, NXP can support the highest volume logic requirements while offering a broad variety of industry-leading package solutions.


  • 5 lead package
  • 0.8 x 0.8 x 0.35 mm
  • 0.5 mm pitch
  • General-purpose Low Voltage CMOS (LVC) and Advanced Ultra-low Power (AUP) CMOS logic functions all available in the world’s smallest package


Samples of logic devices in SOT1226 are already shipping to lead customers and will be available for volume shipping in June 2012.