20KPA Datasheet, PDF (4/4 Pages) Littelfuse – Transient Voltage Suppression Diodes

Transient Voltage Suppressors
20KPA Series
MERITEK
RATING AND CHARACTERISTIC CURVES (TA: 25°C UNLESS OTHERWISE SPECIFIED)
Figure 1 - Peak Pulse Power Rating Curve
Figure 1 - Peak Pulse Power Rating Curve
Figure 2 - Pulse Derating Curve
1000
100
80
100
60
10
40
1
20
0.1
0.000001
0.00001
0.0001
t - Pulse Width (Sec.)
d
0.001
0
0 25 50 75 100 125 150 175 200
T_A-Ambient temperature (ºC)
Figure 3 - Pulse Waveform
Figure 3 - Pulse Waveform
150
tr=10µsec
Peak Value
100
IPPM
T _J=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of _PIPM
Half Value
( ) IPPM IPPM
2
50
10/1000µsec. Waveform
as defined by R.E.A
td
0
0
1.0
2.0
3.0
4.0
t-Time (ms)
Figure 4 - Typical Junction Capacitance
10000
Bi-directional V= OV
Uni-directional V= OV
Uni-directional @ VR
100
Bi-directional @ VR
Tj=25C
f =1.0MHz
Vsig=50mVp-p
1
0 50 100 150 200 250 300 350
V_BR - Reverse Breakdwon Voltage (V)
Figure 5 - Steady State Power Dissipation Derating Curve
9
8
7
6
5
4
3_L
L
2
1
0
0 25 50 75 100 125 150 175 200
T_L- Lead Temperature (ºC)
Figure 6 - Maximum Non-Repetitive Forward
Surge Current Uni-Directional Only
450
400
350
300
250
200
150
100
50
0
1
10
100
Number of Cycles at 60 Hz
4
Rev 7