Quadrant photodiodes from First Sensor are discrete components that commonly feature four optically active areas divided by a small gap. These photodiodes are designed to detect the position of laser beams, in collimators and a number of other adjustment applications.
Special Features
- Small gap areas
- High resolution
- Low dark current
- High shunt resistance
- A special version for 1064 nm is also available
Image Credit: First Sensor
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Series 6 – Low Dark Current
Technical Specifications and PDF Datasheet
| Order # |
Chip |
Package |
Active Area Size (mm) / Area (mm²) |
Gap (µm) |
Dark current (nA); 10 V |
Capacitance (pf); 10 V |
Rise time (ns); 850 nm, 10 V, 50 Ω |
| 501222 |
QP1-6 |
TO52 |
Ø 1.13 / 4x0.25 |
16 |
0.1* |
1 |
20 |
| 500142 |
QP50-6 |
TO8S |
Ø 7.8 / 4x12.5 |
42 |
2.0* |
25 |
40 |
| 501276 |
QP100-6 |
LCC10G |
10x10 / 4x25 |
50 |
4.0* |
50 |
40 |
* per segment
Series Q – for 1064 nm
Technical Specifications and PDF Datasheet
| Order # |
Chip |
Package |
Active Area Size (mm) / Area (mm²) |
Dark current (nA); 150 V |
Rise time (ns); 1064 nm, 180 V, 50 Ω |
| 501049 |
QP22-Q |
TO8S |
Ø 5.3 / 4×5.7 |
1.5* |
12 |
| 501526 |
QP45-Q |
TO8Si with heater |
6.7×6.7 / 4×10.96 |
8* |
12 |
| 501272 |
QP100-Q |
LCC10G |
10×10 / 4×25 |
6.5* |
12 |
| 50079803 |
QP154-Q |
TO1032i |
Ø 14.0 / 4×38.5 |
10* |
12 |
| 50131304 |
QP154-Q |
TO1081i with heater |
Ø 14.0 / 4×38.5 |
10* |
12 |
| 50131305 |
QP154-Q |
TO1081i with heater |
Ø 14.0 / 4×38.5 |
10* |
12 |
* per segment