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V33CH8 Datasheet(PDF) 2 Page - Littelfuse |
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V33CH8 Datasheet(HTML) 2 Page - Littelfuse |
2 / 6 page Varistor Products ©2010 Littelfuse, Inc. Revision: August 30, 2010 CH Varistor Series Surface Mount Varistors > CH Series Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/CH.html for current information. Part Number Maximum Ratings (125ºC) Specifications (25ºC) Continuous Transient Varistor Voltage at 1 mA DC Test Current Max Clamping Volt V C at Test Current (8/20μs) Typical Capacitance V RMS V DC Energy (10/1000μ s) Peak Current (8/20μs) V M(AC) V M(DC) W TM I TM MIN V N(DC) MAX V C I P f=1MHz (V) (V) (J) (A) (V) (V) (V) (V) (A) (pF) V22CH8 14 18 (Note 3) 1.0 (Note2) 100 18.7 22.0 26.0 47 5 1600 V27CH8 17 22 1.0 100 23.0 27.0 31.1 57 5 1300 V33CH8 20 26 1.0 100 29.5 33.0 36.5 68 5 750 V39CH8 25 31 1.0 100 35.0 39.0 43.0 79 5 700 V47CH8 30 38 1.2 100 42.0 47.0 52.0 92 5 650 V56CH8 35 45 1.4 100 50.0 56.0 62.0 107 5 600 V68CH8 40 56 1.5 100 61.0 68.0 75.0 127 10 500 V120CH8 75 102 2.0 250 108.0 120.0 132.0 200 10 300 V150CH8 95 127 3.0 250 135.0 150.0 165.0 250 10 250 V180CH8 115 153 4.0 250 162.0 180.0 198.0 295 10 120 V200CH8 130 175 4.0 250 184.0 200.0 228.0 340 10 110 V220CH8 140 180 5.0 250 198.0 220.0 242.0 360 10 105 V240CH8 150 200 5.0 250 212.0 240.0 268.0 395 10 100 V360CH8 230 300 6.0 250 324.0 360.0 396.0 595 10 70 V390CH8 250 330 7.0 250 354.0 390.0 429.0 650 10 60 V430CH8 275 369 8.0 250 389.0 430.0 473.0 710 10 50 Device Ratings and Specifications NOTES: 1. Power dissipation of transients not to exceed 0.25W. 2. Energy rating for impulse duration of 30ms minimum to one half of peak current value. 3. Also rated to withstand 24V for 5 minutes. 4. All Littelfuse CH Series Varistors are recognized under UL file #E320116 as a recognized component. 5. The Typical Capacitance is for reference only Current, Energy and Power Derating Curve Continuous power dissipation capability is not an applicable design requirement for a suppressor, unless transients occur in rapid succession. Under this condition, the average power dissipation required is simply the energy (watt-seconds) per 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 device. Furthermore, the operating values need to be derated at high tempera tures as shown in this diagram. Because varistors can only dissipate a relatively small amount of average power they are, therefore, not suitable for repetitive applications that involve substantial amounts of average power dissipation. 100 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150 AMBIENT TEMPERATURE ( oC) Figure 1 |
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