Varistor Products Low Prole / Application Specic Varistors > RA Series RoHS RA Varistor Series Description The RA Series transient surge suppressors are varistors (MOVs) supplied in a low-prole box that features a precise seating plane to increase mechanical stability for secure circuit-board mounting. This feature makes these devices suitable for industrial applications critical to vibration. Their construction permits operation up to 125C (ambient) without derating. The RA Series are available in voltage ratings up to 275V V , and energy levels up to 140J. These varistors are M(AC)RMS used in automotive, motor-control, telecommunication, and military applications. Agency Approvals See RA Series Device Ratings and Specications Table for part number and brand information. Agency Agency File Number Features E320116 Leadfree/RoHS Wide operating LR91788 compliant parts voltage range: available (add V : 4 275V M(AC)RMS sufxx2749 ) V 5.5 369V M(DC): Low prole outline with High energy absorption precise seating plane capability W TM up to 140J No derating up to 125C ambient 3 model sizes available A8, RA16, and RA22 In-line leads Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specications chart Continuous RA8 Series RA16 Series RA22 Series Units Steady State Applied Voltage: AC Voltage Range (V ) 4 to 275 10 to 275 4 to 275 V M(AC)RMS DC Voltage Range (V ) 5.5 to 369 14 to 369 18 to 369 V M(DC) Transients: Peak Pulse Current (I ) TM For 8/20s Current Wave (See Figure 2) 100 to 1200 1000 to 4500 2000 to 6500 A Single Pulse Energy Range (Note 1) For 10/1000s Current Wave (W ) 0.4 to 23 3.5 to 75 70 to 160 J TM Operating Ambient Temperature Range (T ) -55 to +125 -55 to +125 -55 to +125 C A Storage Temperature Range (T ) -55 to +150 -55 to +150 -55 to +150 C STG V Temperature Coefcient (a ) of Clamping Voltage (V ) at Specied Test Current <0.01 <0.01 <0.01 %/C C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 5000 5000 5000 V (Delectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) COATING Insulation Resistance 1000 1000 1000 M CAUTION: Stresses above those listed inAbsolute Maximum Rating 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 specication is not implied. 2009 Littelfuse, Inc. 193 RA Varistor Series Specications are subject to change without notice. Revision: November 11, 2009 Please refer to www.littelfuse.com/series/ra.html for current information. RA SeriesVaristor Products Low Prole / Application Specic Varistors > RA Series RA Series Ratings & Specications Maximum Rating (125C) Specications (25C) Continuous Transient Max Clamping Varistor Voltage at 1mA Typical Peak Brand Volt V at 2.0A Part Energy C DC Test Current Capacitance V V Current RMS DC (8/20s) Number (10/1000s) (8/20s) V V W I Min V Max V I f = 1MHz M(AC) M(DC) TM TM N(DC) C p (mm) (V) (V) (J) (A) (V) (V) (V) (V) (A) (pF) RA8 Series V8RA8 8R 4 5.5 0.4 150 6 8.2 11.2 22 5 3000 V12RA8 12R 6 8 0.6 150 9 12 16 34 5 2500 V18RA8 18R 10 14 0.8 250 14.4 18 21.6 42 5 2000 18 10 V22RA8 22R 14 250 18.7 22 26 47 5 1600 (Note 3) (Note 2) V27RA8 27R 17 22 1.0 250 23 27 31.1 57 5 1300 V33RA8 33R 20 26 1.2 250 29.5 33 36.5 68 5 1100 V39RA8 39R 25 31 1.5 250 35 39 43 79 5 900 V47RA8 47R 30 38 1.8 250 42 47 52 92 5 800 V56RA8 56R 35 45 2.3 250 50 56 62 107 5 700 V68RA8 68R 40 56 3.0 250 61 68 75 127 5 600 V82RA8 82R 50 66 4.0 1200 74 82 91 135 10 500 V100RA8 100R 60 81 5.0 1200 90 100 110 165 10 400 V120RA8 120R 75 102 6.0 1200 108 120 132 205 10 300 V150RA8 150R 95 127 8.0 1200 135 150 165 250 10 250 V180RA8 180R 115 153 10.0 1200 162 180 198 295 10 200 V200RA8 200R 130 175 11.0 1200 184 200 228 340 10 180 V220RA8 220R 140 180 12.0 1200 198 220 242 360 10 160 V240RA8 240R 150 200 13.0 1200 212 240 268 395 10 150 V270RA8 270R 175 225 15.0 1200 247 270 303 455 10 130 V360RA8 360R 230 300 20.0 1200 324 360 396 595 10 100 V390RA8 390R 250 330 21.0 1200 354 390 429 650 10 90 V430RA8 430R 275 369 23.0 1200 389 430 473 710 10 80 RA16 Series V18RA16 18R16 10 14 3.5 1000 14.4 18 21.6 39 10 11000 18 (Note 50 (Note V22RA16 22R16 14 1000 18.7 22 26 43 10 9000 3) 2) V27RA16 27R16 17 22 5.0 1000 23 27 31.1 53 10 7000 V33RA16 33R16 20 26 6.0 1000 29.5 33 36.5 64 10 6000 V39RA16 39R16 25 31 7.2 1000 35 39 43 76 10 5000 V47RA16 47R16 30 38 8.8 1000 42 47 52 89 10 4500 V56RA16 56R16 35 45 10.0 1000 50 56 62 103 10 3900 V68RA16 68R16 40 56 13.0 1000 61 68 75 123 10 3300 V82RA16 82R16 50 66 15.0 4500 74 82 91 145 50 2500 V100RA16 100R16 60 81 20.0 4500 90 100 110 175 50 2000 V120RA16 120R16 75 102 22.0 4500 108 120 132 205 50 1700 V150RA16 150R16 95 127 30.0 4500 135 150 165 255 50 1400 V180RA16 180R16 115 153 35.0 4500 162 180 198 300 50 1100 2009 Littelfuse, Inc. 194 RA Varistor Series Specications are subject to change without notice. Revision: November 11, 2009 Please refer to www.littelfuse.com/series/ra.html for current information.