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. 2 VARISTOR PRODUCTS 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. 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 85 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 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,000 Single Pulse Energy Range For 2ms Current Square Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 to 1050 UNITS V V A J Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85 Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 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 MODEL NUMBER V131HB34 SPECIFICATIONS (25 oC) TRANSIENT PEAK CURRENT (8/20µs) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MAXIMUM CLAMPING VOLTAGE (VC) AT 200A (8/20µs) TYPICAL CAPACITANCE VRMS VDC ENERGY (2ms) SIZE VM(AC) VM(DC) WTM ITM MIN VN(DC) MAX VC f = 1MHz (mm) (V) (V) (V) (A) (V) (V) (V) (V) (pF) 34 130 175 270 40,000 1 184 200 228 345 10,000 2 212 240 268 405 8,000 V151HB34 34 150 200 300 40,000 V251HB34 34 250 330 370 40,000 354 390 429 650 5,000 V271HB34 34 275 369 400 40,000 389 430 473 730 4,500 V321HB34 34 320 420 460 40,000 462 510 561 830 3,800 V421HB34 34 420 560 600 40,000 610 680 748 1,130 3,000 V481HB34 34 480 640 650 40,000 670 750 825 1,240 2,700 V511HB34 34 510 675 700 40,000 735 820 910 1,350 2,500 V571HB34 34 575 730 770 40,000 805 910 1000 1,480 2,200 V661HB34 34 660 850 900 40,000 940 1050 1160 1,720 2,000 V751HB34 34 750 970 1050 40,000 1080 1200 1320 2,000 1,800 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. PERCENT OF PEAK VALUE VARISTOR PRODUCTS 2 100 90 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 8/20µs Current Waveform: 8µs = T1 = Virtual Front Time 20µs = T2 = Virtual Time to Half Value 50 10 O1 T TIME T1 T2 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 V751HB34 V511HB34 V661HB34 V481HB34 V571HB34 VOLTAGE (V) V421HB34 1000 V321HB34 V271HB34 V131HB34 V251HB34 V151HB34 100 -5 -4 1E-3 0.01 0.1 1 10 100 1,000 10,000 100,000 CURRENT (A) 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 DISC SIZE 34mm V131HB34 - V751HB34 1 20,000 SURGE CURRENT (A) 10,000 2 10 5,000 102 2,000 103 1,000 105 106 104 500 200 100 50 20 10 INDEFINITE 20 100 1,000 10,000 IMPULSE DURATION ( µs) 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 TABLE OF DIMENSIONS THICKNESS AND TERMINAL OFFSETS 37.0 MAX T BODY THICKNESS (MAXIMUM) S MOUNTING TERMINAL OFFSET V131HB34 5.7 5.50 ±0.65 V151HB34 5.9 5.90 ±0.65 V251HB34 6.1 6.25 ±0.65 V271HB34 6.4 6.50 ±0.65 V321HB34 6.9 6.90 ±0.65 T PART TYPE 44.5 MAX 49.5 MAX 2.30 ±0.2 22.0 ±1.0 6.0 ±0.1 2.5 TO 5.0 0.55 ±0.1 S V421HB34 7.8 7.85 ±0.85 V481HB34 8.3 8.25 ±1.00 V511HB34 8.8 8.60 ±1.00 V571HB34 9.4 8.85 ±1.5 V661HB34 10.2 9.65 ±1.5 V751HB34 10.7 10.65 ±1.5 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