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| Next Previous Varistor Products High Energy Industrial HB34 Varistor Series The HB34 Series of transient surge suppressors are industrial highenergy Metal-Oxide Varistors (MOVs). They are designed to provide surge suppression in the AC mains outdoor and service entrance environment (distribution panels) of buildings. HB34 applications also include industrial heavy motors, controls, and power supplies such as used in the oil-drilling, mining, and transportation fields, including HVAC and motor/generator applications. The HB34 Series provides rigid terminals for through-hole solder mounting on printed circuit boards, thereby eliminating the need for screw mounting. See Ratings and Specifications table for part numbers. (R) (R) 2 VARISTOR PRODUCTS 85 Features * Wide Operating Voltage Range VM(AC)RMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130V to 750V * High Energy Absorption Capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .WTM = 200J to 1050J * High Peak Pulse Current Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITM = 40,000A * Rigid Terminals for Secure Through-Hole Solder Mounting * No Derating Up to 85oC Ambient AGENCY APPROVALS: Recognized under the components program of Underwriters Laboratories. Certified by CSA. AGENCY FILE NUMBERS: UL E75961, CSA LR91788. w w w. l i t t e l f u s e . c o m Next Previous Varistor Products High Energy Industrial HB34 Varistor Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart HB34 SERIES Continuous: Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 750 DC Voltage Range (VM(DC)). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 to 970 Transient: Peak Pulse Current (ITM) For 8/20s Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,000 Single Pulse Energy Range For 2ms Current Square Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 to 1050 Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85 Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 Temperature Coefficient (V) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 UNITS V V A J C C %/OC O O CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Device Ratings and Specifications MAXIMUM RATINGS (85 oC) CONTINUOUS TRANSIENT PEAK CURRENT (8/20s) ITM (A) 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 1 SPECIFICATIONS (25 oC) MAXIMUM CLAMPING VOLTAGE (VC) AT 200A (8/20s) VC (V) 345 405 650 730 830 1,130 1,240 1,350 1,480 1,720 2,000 VRMS SIZE MODEL NUMBER V131HB34 V151HB34 V251HB34 V271HB34 V321HB34 V421HB34 V481HB34 V511HB34 V571HB34 V661HB34 V751HB34 (mm) 34 34 34 34 34 34 34 34 34 34 34 VM(AC) (V) 130 150 250 275 320 420 480 510 575 660 750 VDC VM(DC) (V) 175 200 330 369 420 560 640 675 730 850 970 ENERGY (2ms) WTM (V) 270 300 370 400 460 600 650 700 770 900 1050 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MIN (V) 184 212 354 389 462 610 670 735 805 940 1080 VN(DC) (V) 200 240 390 430 510 680 750 820 910 1050 1200 MAX (V) 228 268 429 473 561 748 825 910 1000 1160 1320 TYPICAL CAPACITANCE f = 1MHz (pF) 10,000 8,000 5,000 4,500 3,800 3,000 2,700 2,500 2,200 2,000 1,800 2 NOTE: Average power dissipation of transients not to exceed 2.0W. 1. Peak current applies to applications rated up to 115 VRMS. Peak current is 30kA for applications greater than 115VRMS . 2. Peak current applies to applications rated up to 132V RMS . Peak Current is 30kA for applications greater than 132VRMS . 86 w w w. l i t t e l f u s e . c o m Next Previous Varistor Products High Energy Industrial HB34 Varistor Series Power Dissipation Ratings Should transients occur in rapid succession, the average power dissipation result 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. The operating values must be derated as shown in Figure 1. 2 VARISTOR PRODUCTS PERCENT OF PEAK VALUE 100 90 50 10 O1 T T1 T2 TIME O1 = Virtual Origin of Wave T = Time From 10% to 90% of Peak T1 = Virtual Front time = 1.25 * t T2 = Virtual Time to Half Value (Impulse Duration) Example: For an 8/20s Current Waveform: 8s = T1 = Virtual Front Time 20s = T2 = Virtual Time to Half Value FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM Transient V-I Characteristics Curves 10000 MAXIMUM CLAMPINGVOLTAGE VARISTOR SIZE 34mm 130 TO 750 VM(AC) RATING TA = -55oC TO 85oC V511HB34 V481HB34 V421HB34 VOLTAGE (V) V751HB34 V661HB34 V571HB34 1000 V321HB34 V131HB34 V151HB34 -5 -4 1E-3 0.01 0.1 1 CURRENT (A) 10 100 1,000 10,000 100,000 V271HB34 V251HB34 100 FIGURE 3. CLAMPING VOLTAGE FOR V131HB34 - V751HB34 w w w. l i t t e l f u s e . c o m 87 Next Previous Varistor Products High Energy Industrial HB34 Varistor Series Pulse Rating Curves 50,000 1 20,000 10,000 SURGE CURRENT (A) 5,000 2,000 1,000 500 200 100 50 20 10 INDEFINITE 20 100 1,000 IMPULSE DURA TION ( s) 10,000 2 10 102 103 104 105 DISC SIZE 34mm V131HB34 - V751HB34 106 FIGURE 4. SURGE CURRENT RATING CURVES FOR V131HB34 - V751HB34 NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than 10% could result. This type of shift, which normally results in a decrease of VN(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. Mechanical Dimensions 37.0 MAX T TABLE OF DIMENSIONS THICKNESS AND TERMINAL OFFSETS T BODY THICKNESS (MAXIMUM) 5.7 5.9 6.1 6.4 6.9 7.8 8.3 8.8 9.4 10.2 10.7 S MOUNTING TERMINAL OFFSET 5.50 0.65 5.90 0.65 6.25 0.65 6.50 0.65 6.90 0.65 7.85 0.85 8.25 1.00 8.60 1.00 8.85 1.5 9.65 1.5 10.65 1.5 PART TYPE V131HB34 V151HB34 49.5 MAX 44.5 MAX V251HB34 V271HB34 V321HB34 V421HB34 V481HB34 22.0 1.0 6.0 0.1 2.30 0.2 0.55 0.1 S V511HB34 2.5 TO 5.0 V571HB34 V661HB34 V751HB34 NOTE: Dimension in mm is typical, unless otherwise specified. Ordering Information V 25 1 HB 34 VARISTOR DESIGNATOR DISC SIZE (mm) MAX AC RMS WORKING VOLTAGE (FIRST SIGNIFICANT DIGITS) V M(AC) SERIES DESIGNATOR VM(AC) VOLTAGE DECADE MULTIPLIER 88 w w w. l i t t e l f u s e . c o m |
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