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Optical sensors
Fast, sensitive
3001214 3001421 3001284
QA
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Quadrant APDs (QA)

Quadrant photodiodes are discrete components that usually feature four optically active areas separated by a small gap. These photodiodes are used for detecting the position of laser beams, in collimators and many other adjustment applications.

Special features
  • Small gap areas
  • Low dark current
  • High shunt resistance
  • High resolution
  • A special version for 1064 nm is also available
Quadrant Avalanche photodiodes of First Sensor


Series 10: with enhanced NIR sensitivity – 1064 nm

Technical specifications and PDF datasheet
Order # Chip Package Quantum efficency (QE) Dark current
(nA); 10 V
Active Area
Size (mm)/
Area (mm²)
Rise time (ns);
850 nm, 10 V, 50 Ω
3001421 QA4000-10 TO8Si high QE at 850-1070 nm 7* ø 4 / 4x3,14 5
3001284 QA4000-10 TO8S high QE at 850-1070 nm 7* ø 4 / 4x3,14 5
* per segment


Series 10: with enhanced NIR sensitivity – 1064 nm

  Technical specifications and PDF datasheet*
Order # Package Quantum efficency (QE) Active Area
Size (mm)/
Area (mm²)
3001421 TO8Si high QE at 850-1070 nm ø 4 / 4x3,14
3001284 TO8S high QE at 850-1070 nm ø 4 / 4x3,14
* For large screens, this table contains more technical specifications. For mobile devices, they are not shown.

Note:
Minimum order quantities may apply. Please do not hesitate to contact us.

Please contact us if you are interested in specific solutions for special applications.


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Company
First Sensor is one of the world's leading suppliers in the field of sensor systems. In the growth market of sensor systems, First Sensor develops and produces customer-specific solutions for the ever-increasing number of applications in the industrial, medical, and mobility target markets. Our goal here is to identify, meet and solve the challenges of the future with our innovative sensor solutions early on.
Investor Relations
Our investor relations activities aim at raising the international publicity of First Sensor AG and at consolidating and extending the perception of our share as an attractive growth stock. This means we keep our online communication transparent, comprehensive and continuous in order to enhance your trust in our share.
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.
Competencies
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.
Career
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.

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