SD150-14-002
VCSEL Monitor Photodiode
Features
VCSEL Mounting Pad
Solderable Metalization
Applications
Overpower VCSEL
monitoring
Temperature compensation
feedback
·
·
·
The SD150-14-002 monitor photodiode was designed to monitor the
optical power of an 850 nm VCSEL. The photodiode has a metal pad on its
top surface to mount the VCSEL die to, which is connected to a wirebond
pad. This wirebond pad is also connected to the anode of the photodiode.
The VCSEL can be attached to the photodiode with Au/Sn solder or with
conductive epoxy. The photodiode bottom (cathode) can also be attached
with Au/Sn solder or with conductive epoxy. The photodiode was designed
to be used with a TO-46 package.
·
The photodiode measures light that reflects back from the window
glass or fiber. The measurement of this reflected light can be used to warn
the user of a VCSEL over power condition or used for temperature
compensation feedback of the VCSEL's optical output. The monitoring photodiode is available in die packs for low
quantity (SD150-14-002) and stretched on 6-inch diameter plastic rings (SD150-14-002-S4) for large quantity
orders.
API can easily customize the monitor photodiode to a different configuration. API also has high volume
packaging capability to package the VCSEL die with monitor photodiode in a TO-46 package.
Electro-Optical Characteristics
@ +23°, and 0 volt bias unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Active Area (Top)
1.22
mm
2
Responsivity
=850 nm
0.50 0.60
A/W
Dark Current
Bias= 5V
180
800
pA
Shunt Resistance
Bias: 10 mV
350
1500
M
Breakdown Voltage
Bias: 10 uA
35
50
V
Capacitance
Bias: 5V
3.5
4.0
pF
Capacitance Bias:
0V
100
120
pF
RiseTime
Bias: 5V, 50
Load
25 ns
NEP
=850 nm, Bias=0V
14
fw/
Hz
NEP
=850 nm, Bias=5V
32
fw/
Hz
Operating Temperature
-55
+100
°C
Storage Temperature
-55
+100
°C
Typical Performance Graphs
Typical Spectral Response
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
200
300
400
500
600
700
800
900
1000
1100
1200
Wavelength (nm)
Responsivity (A/W)
MECHANCIAL DIMENSIONS AND PIN-OUT
API reserves the right to change specifications without notification.
Rev. SEPT 12, 2001
Preliminary
1240 Avenida Acaso, Camarillo, CA 93012
(805) 987-0146 Fax (805) 484-9935
www.advancedphotonix.com
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