V111DHB34 Datasheet, PDF (3/5 Pages) Littelfuse – Varistor Products - High Energy Industrial

Varistor Products
Industrial High Energy Terminal Varistors > DHB34 Series
Power Dissipation Ratings
Peak Pulse Current Test Waveform
100
90
50
Figure 1
Should transients occur in rapid succession, the average
power 100 dissipation result is simply the energy
(watt-seconds) per pulse times the number of pulses
per second. The power so developed must be within
UIF
TQFDJmDBUJPOT
TIPXO
PO
UIF
%FWJDF
3BUJOHT
BOE

Specifications table for the specific device. The operating
values must be derated as shown in above.
Maximum Clamping Voltage
10000
Voltage -
VOLTS
Maximum Clamping Voltage
DHB34 Series
110 to 750V AC Rating
V571
V511 ^V551
1000
TA = -55 C to 85C
V661 V681
V751
V481
V441
V421
100
0.001
Figure 3
V111
V141 V131
0.01
0.1
Current - AMPS
V151
1
10
100
1000
10000
100000
V391 V351 V331 V321 V301 V271 V251 V201 V181
10
O₁
Figure 2
T
T₁
T₂
TIME
0₁

7JSUVBM
0SJHJO
PG
8BWF
5


5JNF
GSPN

UP

PG
1FBL
T₁

3JTF
5JNF


Y
5
T₂ = Decay Time
Example 
'PS
BO

μT
$VSSFOU
8BWFGPSN
8μs = T₁

3JTF
5JNF
20μs = T₂ = Decay Time
Repetitive Surge Capability
50,000
20,000
10,000
1
2
10
DISC SIZE 34mm
V131DHB34 - V751DHB34
5,000 ₁₀₂
2,000 ₁₀₃
1,000
10⁴
500
10⁵ ₁₀₆
200
100
50
20 ^INDEFINITE
10 ₂₀
Figure 4
100
1,000
IMPULSE DURATION ( μs)
10,000
NOTE: If pulse ratings are exceeded, a shift of V_N(DC) (at specified current) of more than
+/-10% could result. This type of shift, which normally results in a decrease of V_N(DC), may
result in the device not meeting the original published specifications, but it does not
prevent the device from continuing to function, and to provide ample protection.
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/dhb34.html for current information.
Revision: February 21, 2011
DHB34 Varistor Series