First Sensor WS PD Data Sheet
Part Description WS7.56 TO
Order # 501224; 501225
Version 22-10-15
#501273
501224
501225
Features
Description
Application
RoHS
• 7.56 mm² wavelength sensitive
detector
• Two stacked p-n-junctions
• Operating range 450 - 950 nm
Wavelength senisitive square active
area PIN photodiode with 7.56 mm²
active area. Metal can type hermetic
TO5(i) package with clear glass
window. Isolated version: #501225.
• Precision photometry
• Analytical instruments
• Medical equipment
• Wavelength determination for
monochromatic light
2002/95/EC
Symbol
TSTG
TOP
Vmax
IPEAK
Parameter
Storage temp
Operating temp
Max reverse voltage
Peak DC current
Schematic 501224
Spectral response (23 °C)
Min
-55
-40
Max
125
100
5
10
Unit
°C
°C
V
mA
Schematic 501225
0,50
0,45
Anode 1
0,40
Responsivity (A/W)
Absolute maximum ratings
0,35
Anode 2
0,30
0,25
0,20
0,15
0,10
0,05
0,00
400
450
500
550
600
650
700
750
800
850
900
950
1000
Wavelength (nm)
Electro-optical characteristics @ 23 °C
Symbol
ID
Characteristic
Active area
Active area
Dark current
C
Capacitance
Responsivity
tR
Rise time
Shunt Resistance
VBR
Breakdown voltage
European, International Sales:
Test Condition
Diode 1; VR = 5 V
Diode 2; VR = 5 V
Diode 1; VR = 0 V
Diode 2; VR = 0 V
Diode 1; λ = 550 nm
Diode 2; λ = 890 nm
Diode 1; VR = 0 V; λ = 850 nm; RL = 1 kΩ
Diode 2; VR = 0 V; λ = 850 nm; RL = 1 kΩ
Diode 1; VR = 10 mV
Diode 2; VR = 10 mV
IR = 2 µA
First Sensor AG
Peter-Behrens-Strasse 15
12459 Berlin
Germany
T +49 30 6399 2399
F +49 30 639923-752
sales.opto@first-sensor.com
USA:
Min
5
Typ
2750 x 2750
7.56
1,5
0,3
1
100
0.2
0.45
10
1
2000
100
10
Max
First Sensor Inc.
5700 Corsa Avenue #105
Westlake Village
CA 91362 USA
T +1 818 706 3400
F +1 818 889 7053
sales.us@first-sensor.com
Unit
µm
mm²
nA
nA
nF
pF
A/W
A/W
µs
µs
MΩ
MΩ
V
a Sheet
First Sensor WS PD Data Sheet
S7.56 TO
; 501225
Part Description WS7.56 TO
Order # 501224; 501225
on 22-10-15
Version 22-10-15
Quantum efficiency (23 °C)
Dark current as fct of bias (23 °C)
10,00
Anode 1
60
Dark current (nA)
Quantum efficiency (%)
80
Anode 2
40
20
1,00
0,10
Anode 1
Anode 2
0
0,01
400 450 500 550 600 650 700 750 800 850 900 950 1000
0
1
2
3
4
Reverse bias (V)
Wavelength (nm)
Special charactertistics:
The WS7.56 wavelength sensor has two p-n junctions constructed vertically on a common
silicon substrate.
The upper and lower diode have an enhanced blue and red response, respectively. Absorbed
radiation between 450 and 900 nm generates two photocurrents proportional to the
wavelength of the incident light. The quotient of the signals is independent of light level up to
the saturation point. The wavelength of monochromatic light or the spectral density peak of
polychromatic light can therefore be determined.
Application hints:
During photovoltaic operation (Vrev= 0 V) the quotient of photocurrents
from anode 1 and anode 2 is constant for up to 150 µW irradiated
power. This range can be increased to up to 3 mW when the reverse
bias is raised. A recomended application circuit is shown to the right.
Handling precautions:
• Soldering temperature max. 260 °C for 10 s. The device must be protected against solder flux vapour.
• Minimum pin length is 2 mm.
• For ESD protection standard precautionary measures are sufficient.
• For further questions please refer to document "Instructions for handling and processing".
European, International Sales:
First Sensor AG
Peter-Behrens-Strasse 15
12459 Berlin
Germany
T +49 30 6399 2399
F +49 30 639923-752
sales.opto@first-sensor.com
USA:
First Sensor Inc.
5700 Corsa Avenue #105
Westlake Village
CA 91362 USA
T +1 818 706 3400
F +1 818 889 7053
sales.us@first-sensor.com
5
a Sheet
First Sensor WS PD Data Sheet
S7.56 TO
4; 501225
Part Description WS7.56 TO
Order # 501224; 501225
ion 22-10-15
Version 22-10-15
Order number 501225, Package: TO5i
Order number 501224, Package: TO5
Package dimension:
Small quantities: Foam pad, boxed (12 cm x 16.5 cm)
Disclaimer:
Due to our strive for continuous improvement, specifications are subject to change within our PCN policy according to JESD46C.
European, International Sales:
First Sensor AG
Peter-Behrens-Strasse 15
12459 Berlin
Germany
T +49 30 6399 2399
F +49 30 639923-752
sales.opto@first-sensor.com
USA:
First Sensor Inc.
5700 Corsa Avenue #105
Westlake Village
CA 91362 USA
T +1 818 706 3400
F +1 818 889 7053
sales.us@first-sensor.com