SILICON PIN DIODES
How to specify a PIN diode
HOW TO SPECIFY A PIN DIODE ?
To obtain the PIN diodes best suited for a specific application, consider the following:
1.
Application
•
•
•
switch
attenuator
limiter
8. Maximum loss expected
9. Minimum isolation needed
10. VSWR and distortion requirements
11. Power applied to the diode
•
forward biased
reverse biased
during switching
2.
3.
Frequency and bandwidth requirements
Power characteristics
•
•
•
peak
average
pulse duration and duty cycle
•
•
12.Static characteristics
4.
5.
Switching time
Bias conditions
•
•
forward
reverse
•
•
applicable voltage: V
R
total capacitance: C
T
(in space charge)
•
•
forward series resistance: R
SF
carrier lifetime
τ
l
thermal resistance: R
th
6.
7.
Circuit impedance
Shunt or series assembly
•
13. Mechanical and packaging constraints
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12-5
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