Quadrant Photodiodes

Our standard InGaAs Quadrant Photodiode consists of four separate active regions on one detector. Each segment gives a current output related to the location of light on the detector. This configuration is ideal for precise position detection and alignment applications.

Features

  • Standard packages (TO-46, TO-5, and LCC)
  • Spectral response from 800 nm to 1700 nm
  • Chip active diameters: 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm and 5 mm
  • High sensitivity
  • Low crosstalk
  • High shunt resistance
  • Low dark current
  • Low capacitance for high segment bandwidth
  • Custom configurations available with tailored packaging, coatings, filters, and more
  • Double quad configurations

Applications

  • Laser Guidance for Free Space Optical Communication
  • Optical Tweezers
  • Beam Profiling

Optoelectronic Characteristics @ 23 ºC ± 2 ºC

GPD Part NumberNQ17S50-XX
NQ17S100-XXNQ17S150-XXNQ17S200-XXNQ17S300-XX 
Legacy Part Number

N17S4Q-500- T46
N17S4Q-500-LCC6

N17S4Q-1-T46
N17S4Q-1-T5
N17S4Q-1-LCC6
N17S4Q-1500-T46
N17S4Q-1500-T5
N17S4Q-1500-LCC6
N17S4Q-2-T5
N17S4Q-2-LCC6
N17S4Q-3-T5
N17S4Q-3-LCC28
 
Active Diameter0.5 mm1 mm1.5 mm2 mm3 mm 
Spectral Response Range800-1700800-1700800-1700800-1700800-1700nm
Peak Wavelength (typ)15501550155015501550nm
Responsivity @ 850 nm (min/typ)0.2 / 0.270.2 / 0.270.2 / 0.270.2 / 0.270.2 / 0.27A/W
Responsivity @ 1300 nm (min/typ)0.85 / 1.00.85 / 1.00.85 / 1.00.85 / 1.00.85 / 1.0A/W
Responsivity @ 1550 nm (min/typ)0.93 / 1.10.93 / 1.10.93 / 1.10.93 / 1.10.93 / 1.1A/W
Dark Current @ VR (typical)0.1 / 2 @ 5 V0.2 / 2 @ 5 V0.4 / 4 @ 5 V0.5 / 5 @ 5 V1 / 8 @ 2 VnA
Shunt Resistance @ 10 mV (min/typ)not available200 typ145 typ50 / 8020 / 60
Capacitance @ 0 V (typ/max)10 typ20 / 4585 / 95120 / 140220 / 400pF
Capacitance @ VR (typ/max)4 / 6 @ 5 V10 / 15 @ 5 V20 / 30 @ 5 V45 / 80 @ 5 V100 / 200 @ 2 VpF
NEP @ λPEAK @ VR (typ)5.27.310.311.516.3fW/Hz1/2
Linearity (± 0.2 dB) @ 0 V (typ)+6+6+6+6+6dBm
TO PackagesTO-46TO-46, TO-5TO-46, TO-5TO-5TO-5 
Leadless Ceramic PackagesLCC-6LCC-6LCC-6LCC-6LCC-28 
Storage Temperature-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125ºC
Operating Temperature-40 to 85-40 to 85-40 to 85-40 to 85-40 to 85ºC
Max Reverse Voltage2525252525V
Max Reverse Current1010101010mA
Max Forward Current0.10.10.10.10.1mA

Custom Multi-Element Ǫuads are also available.

GPD qualifications

Our compliance, certificates, and capabilities.