Smallest Bluetooth 4.1 LE module?

TDK has developed what it says is the world’s smallest Bluetooth 4.1 LE module. Measuring 3.5 x 3.5 x 1mm, the module has an integrated DC/DC converter, operates from a 3V supply and consumes 5mA when transmitting, dropping to 0.8µA in standby mode.

Called the SESUB-PAN-D14580 module – and based on TDK’s semiconductor embedded in substrate (SESUB) integration technology – the module features an embedded DA14580 Bluetooth 4.1 chip from Dialog Semiconductor. All terminals of the discrete chip are available, allowing full use of chip functions. The modular approach is said to simplify the hardware design process.