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November 2014

X7 photodiodes

Ultra-flat chip-scale package photodiodes for scanner systems

First Sensor presents the new X7 PIN photodiodes for the detection of ionizing radiation in container and baggage scanner OEM applications. The photodiodes are optimized for scintillator luminescence detection in the visible wavelength range.

The X7 photodiodes feature an ultra-flat chip-scale package (CSP) with a footprint nearly the same size as the actual semiconductor die. The chip is mounted on the carrier with its active area and electrical contacts facing down, using the latest flip-chip technology. Therefore, the chip is illuminated from the backside. This enables an ultra-flat photodiode surface without fragile bond wires, which is ideal for the precision mounting of a scintillation crystal. By means of solder bumps and surface mount technology (SMT), multiple X7 photodiode elements can be assembled to create larger linear or matrix arrays with very high fitting accuracy. First Sensor develops and manufactures custom specific arrays, sensors and complete systems for OEM customers worldwide.

Important features of the new X7 photodiodes:

  • Optimized for scintillator luminescence
  • Ultra-flat chip-scale package (CSP)
  • Photodiode surface without bond wires for scintillator mounting
  • Accurately fitting linear or matrix array assemblies

Typical applications of the X7 photodiodes include contact-free and non-destructive inspection and security systems such as container scanners, cargo scanners and baggage scanners.

Press photo X7 photodiodes
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In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
Tailored Solutions
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
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Innovation, excellence, proximity – these are our values, our ambition, our drive. Anything less is not an option. Our sensor solutions stand for technical innovation and economic growth. As such, they form the basis for the development and application of new technologies in almost all areas of life. We aim to shape this future together with you.