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NTE1V010 thru NTE1V300 NTE2V010 thru NTEV480 NTE524V13 thru NTE524V48 Metal Oxide Varistors (MOV)
Description: The NTE Metal Oxide Varistors feature a barrier layer that gives the user fast response time. These devices have a high transient current handling capability when high voltage is applied. Static resistance is, however, very high under low voltage conditions, permitting low standby drain currents. The NTE 1V Series Varistors have a non-linear voltage/current characteristic as expressed by the relationship: I Where I V K n = = = = = KVn The current in amperes The voltage A constant A constant which shows the dependence of the voltage V upon the current I. It is called the voltage-dependant index
Features: D High Transient Current Capability - up to 6500A D Fast Response Time - less than 35ns D Excellent Voltage Clamping Characteristics D Very Low Temperature Coefficient D Low Standby Current
D D D D D
High Energy Capability The Value for "n" is Greater Very Low Leakage Current Low Capacitance Low Overshoot Characteristics
Electrical Ratings: Varistor Voltage The voltage across the varistor at a DC current of 1.0mA. Energy The maximum electrical energy which can be dissipated within the varistor by a single impulse of 10 x 1000s current waveform with continuous voltage applied. Energy ratings are based on a shift of varistor voltage of less than 10% of the initial value. The unit is expressed in joules. Peak Current The maximum current allowable for a single pulse of 8 x 20s exponential waveform. Operating Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +85C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than 35ns Voltage Temperature Coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than 0.05%/C Non-Linear Exponent NTE1V010 to NTE1V075, NTE2V010 to NTE2V075 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 to 50 NTE1V095 to NTE1V300, NTE2V095 to NTE2V480, NTE524V13 to NTE542V48 . . . . . . . . . . . greater than 40 Maximum Leakage Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A
Electrical Characteristics:
Maximum Ratings (TA = 25C) Continuous Transient Nominal Varistor Voltage @ 1mA DC Test Current (Volts) VNOM Characteristics Maximum Clamping Voltage, VC @ Test Current (8/20s) (Volts) VCL
NTE Type Number
Case Diameter
RMS Voltage (Volts) Vm (AC)
DC Voltage (Volts) Vm (DC)
Energy (10/1000s) (Joules) WTM
Peak Current (8/20s) (Amps) ITM
Transient Power Dissipation (Watts) PD
1V010 2V010 1V014 2V014 1V015 2V015 1V017 2V017 1V020 2V020 1V025 2V025 1V030 2V030 1V035 2V035 1V040 2V040 1V050 2V050 1V060 2V060 1V075 2V075 1V095 2V095 1V115 2V115 1V130 2V130 524V13 1V150 2V150 524V15 1V175 524V17 1V250 2V250 524V25 1V275 2V275 524V27
8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 8.5mm 16mm 23mm 8.5mm 16mm 23mm 8.5mm 23mm 8.5mm 16mm 23mm 8.5mm 16mm 23mm
10 10 14 10 15 15 17 17 20 20 25 25 30 30 35 35 43 43 52 52 63 63 75 75 95 95 115 115 135 135 135 160 160 160 170 170 240 240 240 260 260 260
12 12 18 12 20 20 22 22 26 26 31 31 38 38 45 45 55 55 66 66 80 80 95 95 125 125 150 150 180 180 180 210 210 210 225 225 320 320 320 330 330 330
0.8 3.5 1.2 4.0 1.0 4.5 1.3 5.0 1.5 6.0 1.7 7.0 2.3 8.5 2.7 10.0 3.2 13.0 4.0 14.0 6.0 18.0 5.0 21.0 7.0 29.0 10.0 35.0 10.0 39.0 72.0 10.0 40.0 80.0 12.0 90.0 20.0 70.0 129.0 20.0 72.0 135.0
250 1000 250 1000 250 1000 250 1000 250 1000 250 1000 250 1000 250 1000 250 1000 250 1000 1200 4500 1200 4500 1200 4500 1200 4500 1200 4500 6500 1200 4500 6500 1200 6500 1200 4500 6500 1200 4500 6500
18 18 22 22 24 24 27 27 33 33 39 39 47 47 56 56 68 68 82 82 100 100 120 120 150 150 171 171 216 216 216 240 240 240 270 270 390 390 390 430 430 430
45 45 55 55 52 48 60 60 70 70 80 80 95 95 110 110 135 135 150 150 175 175 205 205 250 250 295 300 355 355 355 410 410 410 450 450 630 630 630 685 685 685
0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 0.25 0.60 1.00 0.25 0.60 1.00 .025 1.00 0.25 0.60 1.00 0.25 0.60 1.00
Electrical Characteristics (Cont'd):
Maximum Ratings (TA = 25C) Continuous Transient Nominal Varistor Voltage @ 1mA DC Test Current (Volts) VNOM Characteristics Maximum Clamping Voltage, VC @ Test Current (8/20s) (Volts) VCL
NTE Type Number
Case Diameter
RMS Voltage (Volts) Vm (AC)
DC Voltage (Volts) Vm (DC)
Energy (10/1000s) (Joules) WTM
Peak Current (8/20s) (Amps) ITM
Transient Power Dissipation (Watts) PD
1V300 2V300 524V30 2V420 524V42 2V480 524V48
8.5mm 16mm 23mm 16mm 23mm 16mm 23mm
280 280 280 420 420 480 480
370 370 370 560 560 640 640
22.0 79.0 149.0 90.0 160.0 105.0 180.0
1200 4500 6500 4500 6500 4500 6500
470 470 470 680 680 750 750
740 740 740 1110 1110 1240 1240
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 eventually result in open-circuiting leaving the circuit without protection. The following precautions should be taken to minimize this potential hazard: D D D Fusing the varistor to limit high fault currents. Protecting the surrounding circuitry by physical shielding. Locating the varistor away from other components. Typical Power Supply Circuit
100H D
+ 0.1F - 150F
LS
D
LL LD
L
D 1V Series H .235 (6.0) L LL LS LD .345 (9.0) .475 1.000 .200 .024 (12.0) (25.4) (5.08) (0.6) .787 1.000 .315 (20.0) (25.4) (8.0) .031 (0.8)
H
2V Series
.699 .275 (17.8) (7.0)
524V Series .945 .291 (24.0) (7.4)
1.230 1.063 .394 .039 (31.0) (27.0) (10.0) (1.0)

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