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VC040205B250WM Datasheet(PDF) 10 Page - AVX Corporation

Part # VC040205B250WM
Description  AVX Multilayer Ceramic Transient Voltage Suppressors
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Manufacturer  AVX [AVX Corporation]
Direct Link  http://www.avx.com
Logo AVX - AVX Corporation

VC040205B250WM Datasheet(HTML) 10 Page - AVX Corporation

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10
TransGuard
®
AVX Multilayer Ceramic Transient Voltage Suppressors
Repetitive Peak Current Strikes
TransGuard 1210 1.5J Product
10%
8%
4%
2%
0%
6%
0
100
200
300
400
500
600
Number of Strikes
VC121018J390
Figure 3
30%
25%
15%
5%
10%
0%
20%
0
100
200
300
400
500
600
Number of Strikes
VC08LC18A500
Figure 4
Repetitive Peak Current Strikes
StaticGuard 0805 0.1J Product
PULSE DEGRADATION
Traditionally varistors have suffered degradation of electrical perfor-
mance with repeated high current pulses resulting in decreased
breakdown voltage and increased leakage current. It has been
suggested that irregular intergranular boundaries and bulk material
result in restricted current paths and other non-Schottky barrier
paralleled conduction paths in the ceramic. Repeated pulsing of
both 5.6 and 14V TransGuard transient voltage suppressors with
150 Amp peak 8 x 20µS waveforms shows negligible degradation
in breakdown voltage and minimal increases in leakage current.
This does not mean that TransGuard suppressors do not suffer
degradation, but it occurs at much higher current. The plots
of typical breakdown voltage vs number of 150A pulses are
shown below.
TYPICAL PERFORMANCE CURVES (0603, 0805, 1206 & 1210 CHIP SIZES)
VC060305A150
VC060326A580
VC06LC18X500
100
80
60
40
20
0
020
40
Frequency (MHz)
60
80
100
VC080518C400
VC080514A300
VC080505C150
100
80
60
40
20
0
020
40
Frequency (MHz)
60
80
100
VC120648D101
VC12LC18A500
VC120614D300
100
80
60
40
20
0
020
40
Frequency (MHz)
60
80
100
TransGuard Capacitance vs Frequency 0603
TransGuard Capacitance vs Frequency 0805
TransGuard Capacitance vs Frequency 1206
10%
8%
4%
2%
0%
6%
0
100
200
300
400
500
600
Number of Strikes
VC120618D400
VC120626D580
VC120614D300
VC120605D150
Figure 1
Repetitive Peak Current Strikes
TransGuard 0805 0.1J and 0.3J Products
0%
5%
10%
15%
0
100
200
300
400
500
600
Number of Strikes
VC080518C400
VC080518A400
Figure 2
Repetitive Peak Current Strikes
TransGuard 1206 0.4J Product
CAPACITANCE/FREQUENCY
CHARACTERISTICS


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