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DA14531 Hongjia HJ-131IMH


Tangshan HongJia Electronic Technology Co., Ltd. has developed a ultra-small, ultra-low power Bluetooth 5.1 SIP module with Dialog’s SmartBond DA14531 TINY, the world’s smallest and most power-efficient Bluetooth 5.1 SoC. The HJ-131IMH with built-in high-performance antenna comes in the size of 4 x 4 x 1.3mm in a LGA17 package, making it ideal for wearables and medical devices that require ultra-small footprint.


Size: 4 x 4 x 1.3mm

Built-in high-performance antenna (External antenna can also be used)

Package: LGA17

GPIOs: 6

Supply voltage: 1.1V-3.6V

TX < 3.5mA; RX < 2.2 mA

On-board antenna range: 5-10m; External antenna range: 40-80m

Support BLE 5.1, support WeChat and user develop

Built-in 4kB EEPROM

External memory support for Flash for user software and SUOTA

Operating temperature: -40℃ to +85℃


Tiny medical applications


Smart toys

Smart locks

Remote controls

Industrial smart devices

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Name Date Version
DA14531 Honjia HJ-131IMH datasheet (696 KB) 12/05/2020 1.7
SDK User Manual
Name Date Version
DA14531 Honjia HJ-131IMH datasheet (666.9 KB) 02/07/2020 1.0 Beta

Ordering information

Samples available. Contact your local Dialog sales representative.

Contact Hongjia:,