NTE1V010_13 Datasheet, PDF (3/3 Pages) NTE Electronics – Metal Oxide Varistors (MOV)

Electrical Characteristics (Cont’d):
Maximum Ratings (T_A = 25C)
Continuous
Transient
NTE Type
Number
1V300
2V300
524V30
2V420
524V42
2V480
524V48
Case Diameter
8.5mm
16mm
23mm
16mm
23mm
16mm
23mm
RMS
Voltage
(Volts)
V_m (AC)
300
300
300
420
420
480
480
DC
Voltage
(Volts)
V_m (DC)
370
370
370
560
560
640
640
Energy
(10/1000s)
(Joules)
W_TM
22.0
79.0
149.0
90.0
160.0
105.0
180.0
Peak Current
(8/20s)
(Amps)
I_TM
1200
4500
6500
4500
6500
4500
6500
Nominal
Varistor
Voltage
@ 1mA DC
Test Current
(Volts)
V_NOM
470
470
470
680
680
750
750
Characteristics
Maximum
Clamping
Voltage, V_C
@ Test Current
(8/20s)
(Volts)
V_CL
740
740
740
1110
1110
1240
1240
Transient
Power
Dissipation
(Watts)
P_D
0.25
0.60
1.00
0.60
1.00
0.60
1.00
Cautions:
NTE varistors short−circuit when subjected to surges beyond their peak current and energy ratings.
NTE varistors short−circuit when operated at steady−state voltages well beyond their voltage ratings, which may eventual-
ly result in open−circuiting leaving the circuit without protection.
The following precautions should be taken to minimize this potential hazard:
D Fusing the varistor to limit high fault currents.
D Protecting the surrounding circuitry by physical shielding.
D Locating the varistor away from other components.
Typical Power Supply Circuit
100H
D
0.1F
+
150F
−
LS
LL
LD
D
L
DH
L
LL LS LD
1V Series .345 .235 .475 1.000 .200 .024
H
(9.0) (6.0) (12.0) (25.4) (5.08) (0.6)
2V Series .699 .275 .787 1.000 .315 .031
(17.8) (7.0) (20.0) (25.4) (8.0) (0.8)
524V Series .945 .291 1.230 1.063 .394 .039
(24.0) (7.4) (31.0) (27.0) (10.0) (1.0)