From MediaTek: "muRata announces world's smallest NB-IoT module"
In 2019 the NB-IoT market is expected to grow to 35M units - up by 2.5X over 2018, and by 2020 it is forecast to be the leading technology for LPWA modules (source: IHS Markit, @IHSMarkitTech).
To meet this explosive IoT market growth, the MediaTek MT2621 and MT2625 NB-IoT modules are already available, with muRata using the latter to make its latest NB-IoT modem module which, at just 12.6 x 10.6 x 1.8mm, claims to be the smallest in the world.
The power consumption matches its incredibly small size, at just 3 μA in power saving mode, making the 1SS module ideal for miniaturized, battery-operated IoT devices such as wearables, tracking devices or other devices use-cases where space is limited. It can run using 1.8 - 3.3 V, making it ideal for dry-cell devices, offering battery lifetimes up to ten years and even operate in extreme environments -40°C to +85°C.
Samples are available now and the modem will enter mass production during Q1 2019. Learn more at www.murata.com
Source: https://www.mediatek.com/blog/smallest-nb-iot-module