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 Number	NQ17S50-XX	NQ17S100-XX	NQ17S150-XX	NQ17S200-XX	NQ17S300-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 Diameter	0.5 mm	1 mm	1.5 mm	2 mm	3 mm
Spectral Response Range	800-1700	800-1700	800-1700	800-1700	800-1700	nm
Peak Wavelength (typ)	1550	1550	1550	1550	1550	nm
Responsivity @ 850 nm (min/typ)	0.2 / 0.27	0.2 / 0.27	0.2 / 0.27	0.2 / 0.27	0.2 / 0.27	A/W
Responsivity @ 1300 nm (min/typ)	0.85 / 1.0	0.85 / 1.0	0.85 / 1.0	0.85 / 1.0	0.85 / 1.0	A/W
Responsivity @ 1550 nm (min/typ)	0.93 / 1.1	0.93 / 1.1	0.93 / 1.1	0.93 / 1.1	0.93 / 1.1	A/W
Dark Current @ V_R (typical)	0.1 / 2 @ 5 V	0.2 / 2 @ 5 V	0.4 / 4 @ 5 V	0.5 / 5 @ 5 V	1 / 8 @ 2 V	nA
Shunt Resistance @ 10 mV (min/typ)	not available	200 typ	145 typ	50 / 80	20 / 60	MΩ
Capacitance @ 0 V (typ/max)	10 typ	20 / 45	85 / 95	120 / 140	220 / 400	pF
Capacitance @ V_R (typ/max)	4 / 6 @ 5 V	10 / 15 @ 5 V	20 / 30 @ 5 V	45 / 80 @ 5 V	100 / 200 @ 2 V	pF
NEP @ λ_PEAK @ V_R (typ)	5.2	7.3	10.3	11.5	16.3	fW/Hz^1/2
Linearity (± 0.2 dB) @ 0 V (typ)	+6	+6	+6	+6	+6	dBm
TO Packages	TO-46	TO-46, TO-5	TO-46, TO-5	TO-5	TO-5
Leadless Ceramic Packages	LCC-6	LCC-6	LCC-6	LCC-6	LCC-28
Storage Temperature	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	ºC
Operating Temperature	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	ºC
Max Reverse Voltage	25	25	25	25	25	V
Max Reverse Current	10	10	10	10	10	mA
Max Forward Current	0.1	0.1	0.1	0.1	0.1	mA

Custom Multi-Element Ǫuads are also available.

GPD qualifications

Quadrant Photodiodes

Features

Applications

Optoelectronic Characteristics @ 23 ºC ± 2 ºC

Our compliance, certificates, and capabilities.

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