Press release #Connected mobility

Bosch MEMS sensors now enable faster airbag deployment

New high-G acceleration sensors increase driver and passenger safety

  • MEMS sensors improve driver and passenger safety in motor vehicles
  • Accurate signal detection with faster signal processing thanks to a doubled bandwidth
  • Large number of packaging and installation options provide greater flexibility
  • Improved frontal, side and rollover crash detection
Joern Ebberg

Joern Ebberg >


Munich and Reutlingen, Germany – Precision meets speed. At electronica, the world’s leading trade fair for electronics, Bosch announces a new generation of high-g acceleration sensors. The SMA7xy sensor family improves safety for car drivers and passengers. When the acceleration sensors detect a collision, the passive safety systems such as airbags can now be deployed earlier, and the restraining effect can be precisely set for the given accident scenario. In this way, the consequences of accidents can be further mitigated. The new SMA7xy family comprises of multiple sensors for airbag systems based on Bosch's market leading MEMS technology.

Universally applicable, very fast crash sensors

The sensors from the new SMA7xy product family enable extremely fast signal processing. Compared to the sensors of the preceding generation, Bosch has doubled the bandwidth, and thereby increased crash signal processing speeds by one hundred percent. The acceleration sensors are located either directly in the airbag ECU or in satellites located at the A- B- or C-pillar or at the front bumper. The sensors detect impact or a car rollover event within fractions of a second and send this information to the airbag ECU, which then deploys the vehicle's passive safety systems in time.

One of the sensors from the SMA7xy family, the SMA760 precisely detects front and side impacts. A second sensor, the SMA720 contains one x and one z channel to measure acceleration along the vertical axis. This makes the SMA720 an ideal companion to the SMI860 for vehicle rollover detection. Both sensors support the SafeSPI communication interface standard.

All sensors from the SMA7xy family conform to the ASIL D safety level of ISO 26262 and meet the VDA AK-LV27 specification. The PSI5 sensor versions, designed specifically for use along the periphery, offer a wide acceleration range: 30g, 60g, 120g, 240g, or 480g. For improved design flexibility Bosch offers a number of variants, for example an upright face mount option with a smaller footprint.

Flexible options providing design freedom

The peripheral-type sensors of the SMA7xy family are available in many variants, with two package options, four sensor axis configurations, several measurement range options and well over 80 different PSI5 modes – there is a suitable sensor to meet every requirement. One package option is the SOIC8, a well-established housing that is widely used and exceptionally robust, whilst the LGA System-in-package (SiP) houses integrated passive components.

Further information:

Contact person for press inquiries:
Annett Fischer,
Phone: +49 711 811-6286
Twitter: @Annett__Fischer


  • BOOTH: Tuesday to Friday, November 13–16, 2018, booth 522 in hall C3
  • FOLLOW the Bosch electronica 2018 highlights on Twitter: #BoschMEMS
    • Monday, November 12, 12:30 p.m.: presentation “Sensors enabling future mobility solutions” by Dr. Markus Sonnemann, Vice President Pre-Development MEMS sensors at Robert Bosch GmbH, electronica Automotive Conference at ICM Munich
    • Tuesday, November 13, 11:30 a.m.: presentation “MEMS – one product one process?” by Dr. Udo-Martin Gómez, Senior Vice President MEMS sensors, Robert Bosch GmbH, SEMICON Europe, Fab Management Forum at ICM Munich in room 14c
    • Tuesday, November 13, 3:00 p.m.: Automobilwoche panel discussion “electronica Talk from the Top” with Jens Fabrowsky, Executive Vice President Automotive Electronics at Robert Bosch GmbH, discovery stage in hall C6
    • Tuesday, November 13, 3:30 p.m.: presentation “MEMS Mobility Sensors for motion detection” by Michael Rupp, Senior Expert Product Management Sensors at Robert Bosch GmbH, electronica Automotive Forum in hall B4
    • Wednesday, November 14, 3:40 p.m.: presentation “The future of MEMS-based smart sensor nodes in the context of highly functional and ultra-low power IoT applications” by Dr. Ralf Schellin, Head of Product Area MEMS at Bosch Sensortec GmbH, International Congress Center (ICC)

Mobility is the largest Bosch Group business sector. According to preliminary figures, it generated sales of 56.3 billion euros in 2023, and thus contributed almost 60 percent of total sales. This makes the Bosch Group one of the leading automotive suppliers. The Mobility business sector pursues a vision of mobility that is safe, sustainable, and exciting. For its customers, the outcome is integrated mobility solutions. The business sector’s main areas of activity are injection technology and powertrain peripherals for internal-combustion engines, diverse solutions for powertrain electrification, vehicle safety systems, driver-assistance and automated functions, technology for user-friendly infotainment as well as vehicle-to-vehicle and vehicle-to-infrastructure communication, repair-shop concepts, and technology and services for the automotive aftermarket. Bosch is synonymous with important automotive innovations, such as electronic engine management, the ESP anti-skid system, and common-rail diesel technology.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 428,000 associates worldwide (as of December 31, 2023). According to preliminary figures, the company generated sales of 91.6 billion euros in 2023. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT provider, Bosch offers innovative solutions for smart homes, Industry 4.0, and connected mobility. Bosch is pursuing a vision of mobility that is sustainable, safe, and exciting. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to facilitate connected living with products and solutions that either contain artificial intelligence (AI) or have been developed or manufactured with its help. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. At 136 locations across the globe, Bosch employs some 90,000 associates in research and development, of which roughly 48,000 are software engineers.

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