V111HA32 Datasheet, PDF (3/5 Pages) Littelfuse – Varistor Products - High Energy Industrial

Varistor Products
Industrial High Energy Terminal Varistors > HA Series
Power Dissipation Ratings
Current , Energy and Power De–Rating Curve
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
Figure 1
AMBIENTTEMPERATURE ( ^oC)
Should transients occur in rapid succession, the average power
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JT
TJNQMZ
UIF
FOFSHZ
XBUUTFDPOET
QFS

pulse times the number of pulses per second. The power
so developed must be within the specifications shown on
the Device Ratings and Specifications table for the specific
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'VSUIFSNPSF
UIF
PQFSBUJOH
WBMVFT
OFFE
UP
CF
EFSBUFE

at high temperatures as shown in above. Because varistors
can only dissipate a relatively small amount of average power
they are, therefore, not suitable for repetitive applications that
involve substantial amounts for average power dissipation.
Maximum Clamping Voltage for 32mm Parts
V111HA32–V751HA32
10000
Maximum Clamping Voltage
HA32 Series
110 to 750V AC Rating
V321CA32
V331CA32
V351CA32
V301CA32
1000
TA = -55 C to 85C
V751CA32 ^V681CA32
V661HA32
V511CA32
V571CA32
V551CA32
V481CA32
V441CA32
V421CA32
V391CA32
V271CA32
100
0.001
0.01
Figure 3
V251CA32 V201CA32
V151CA32
V181CA32
V141CA32
C111CA32
V131CA32
0.1
1
10
100
1000
10000
100000
Current (A)
Peak Pulse Current Test Waveform
100
90
50
10
O₁
Figure 2
T
T₁
T₂
TIME
0₁ = Virtual Origin of Wave
5


5JNF
GSPN

UP

PG
1FBL
T₁ = Rise Time = 1.25 x T
T₂ = Decay Time
Example 
'PS
BO

μT
$VSSFOU
8BWFGPSN
8μs = T₁ = Rise Time
20μs = T₂ = Decay Time
Maximum Clamping Voltage for 40mm Parts
V111HA40–V751HA40
10000
Maximum Clamping Voltage
HA40 Series
110 to 750V AC Rating
1000
V351
V391
V421 V441
TA = -55 C to 85C
V751
V481
V571
V551
V511
V681
V661
V331
V321
V301
100
0.001
V111
V131 _{V141 V151}
0.01
0.1
1
Figure 4
10
100
Current - (A)
V181
V271
V251
V201
1000
10000
100000
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ha.html for current information.
Revision: February 21, 2011
HA Varistor Series