SILICON PIN DIODES
How to specify a PIN diode
HOW TO S P ECIFY A P IN DIODE ?
To obtain the PIN diodes best suited for a specific application, consider the following:
1. Application
8. Maxim um loss expected
•
•
•
switch
9. Minim um isolation needed
10. VSWR and distortion requirements
attenuator
lim iter
11. Power applied to the diode
2. Frequency and bandwidth requirements
•
•
•
forward biased
reverse biased
during switching
3. Power characteristics
•
•
•
peak
average
12.Static characteristics
pulse duration and duty cycle
•
•
applicable voltage: V
R
4. Sw itching tim e
5. Bias conditions
total capacitance: C
T
(in space charge)
•
•
forward
reverse
•
forward series resistance: R
SF
•
•
carrier lifetim e τl
6. Circuit im pedance
therm al resistance: R
th
13.Mechanical and packaging constraints
7. Shunt or series assem bly
12-5
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