ZA Series Data Sheet Radial Lead Metal-Oxide Varistors for Low to Medium Voltage Operation [ /Title (ZA Series) /Subject (Radial Lead MetalOxide Varistors for Low to Mediu m Voltage Operation) /Autho r () /Keywords (Littelfuse, Inc., Suppression Products, TVS, Transient Suppression, Protection, Automotive, The ZA Series of transient voltage surge suppressors are radial-lead varistors (MOVs) designed for use in the protection of low and medium-voltage circuits and systems. Typical applications include motor control, telecom, automotive systems, solenoid, and power supply circuits to protect circuit board components and maintain data integrity. These devices are available in five model sizes: 5mm, 7mm, 10mm, 14mm and 20mm, and feature a wide VDC voltage range of 5.5V to 615V. See ZA Series Device Ratings and Specifications table for part number and brand information. July 1999 File Number 2184.6 Features • Recognized as “Protectors for Data Communications and Fire Alarm Circuits”, UL File #E135010 to Std. 497B • VDE Certified. License Number 116895E • Wide Operating Voltage Range VM(AC)RMS . . . . 4V to 460V • DC Voltage Ratings . . . . . . . . . . . . . . . . . . . 5.5V to 615V • No Derating Up to 85oC Ambient • 5 Model Sizes Available . . . . . . . . 5, 7, 10, 14, and 20mm • Radial-Lead Package for Hard-Wired or Printed Circuit Board Designs • Available in Tape and Reel or Bulk Pack • Standard Lead Form Options Packaging 14MM, 20MM 5MM, 7MM, 10MM 4-34 1-800-999-9445 or 1-847-824-1188 | Copyright © Littelfuse, Inc. 1999 ZA Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart. Continuous: Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transient: Peak Pulse Current (ITM) For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Pulse Energy Range (Note 1) For 10/1000µs Current Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) . . . . Insulation Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ZA SERIES UNITS 4 to 460 5.5 to 615 V V 50 to 6500 A 0.1 to 52 -55 to 85 -55 to 125 <0.01 2500 J %/oC V 1000 MΩ oC oC 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 (Note 1) VDE Certified. License Number 116895E ZA Series Varistors are listed under UL File No. E135010 as a UL recognized component. MAXIMUM RATING (85oC) CONTINUOUS PART NUMBER V8ZA05 MODEL SIZE DISC DIA. (mm) 5 BRAND Z08 SPECIFICATIONS (25oC) TRANSIENT VRMS VDC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs VM(AC) VM(DC) WTM ITM (V) (V) (J) (A) 4 5.5 0.1 50 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN VNOM MAX (V) 6 11 MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACITANCE f = 1MHz VC IPK C (V) (A) (pF) 30 1 1400 V8ZA1 7 08Z1 4 5.5 0.4 100 6 11 22 2.5 3000 V8ZA2 10 08Z2 4 5.5 0.8 250 6 11 20 5 7500 V12ZA05 5 Z12 6 8 0.14 50 9 16 37 1 1200 V12ZA1 7 12Z1 6 8 0.6 100 9 16 34 2.5 2500 V12ZA2 10 12Z2 6 8 1.2 250 9 16 30 5 6000 V18ZA05 5 Z18 10 14 0.17 100 14.4 21.6 36 1 1000 V18ZA1 7 18Z1 10 14 0.8 250 14.4 21.6 36 2.5 2000 V18ZA2 10 18Z2 10 14 1.5 500 14.4 21.6 36 5 5000 V18ZA3 14 18Z3 10 14 3.5 1000 14.4 21.6 36 10 11000 V18ZA40 20 18Z40 10 14 80 (Note 2) 2000 14.4 (Note 3) 21.6 37 20 22000 V22ZA05 5 Z22 14 18 0.2 100 18.7 26 43 1 800 V22ZA1 7 22Z1 14 18 0.9 250 18.7 26 43 2.5 1600 V22ZA2 10 22Z2 14 18 2 500 18.7 26 43 5 4000 V22ZA3 14 22Z3 14 18 4 1000 18.7 26 43 10 9000 V24ZA50 20 24Z50 14 18 (Note 4) 100 (Note 2) 2000 19.2 (Note 3) 26 43 20 18000 V27ZA05 5 Z27 17 22 0.25 100 23 31.1 53 1 600 V27ZA1 7 27Z1 17 22 1 250 23 31.1 53 2.5 1300 V27ZA2 10 27Z2 17 22 2.5 500 23 31.1 53 5 3000 V27ZA4 14 27Z4 17 22 5 1000 23 31.1 53 10 7000 V27ZA60 20 27Z60 17 22 120 (Note 2) 2000 23 (Note 3) 31.1 50 20 13000 4-35 ZA Series Device Ratings and Specifications (Note 1) (Continued) VDE Certified. License Number 116895E ZA Series Varistors are listed under UL File No. E135010 as a UL recognized component. MAXIMUM RATING (85oC) CONTINUOUS PART NUMBER MODEL SIZE DISC DIA. (mm) BRAND SPECIFICATIONS (25oC) TRANSIENT VRMS VDC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs VM(AC) VM(DC) WTM ITM (V) (V) (J) (A) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN VNOM MAX (V) MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACITANCE f = 1MHz VC IPK C (V) (A) (pF) V33ZA05 5 Z33 20 26 0.3 100 29.5 38 65 1 500 V33ZA1 7 33Z1 20 26 1.2 250 29.5 36.5 65 2.5 1100 V33ZA2 10 33Z2 20 26 3 500 29.5 36.5 65 5 2700 V33ZA5 14 33Z5 20 26 6 1000 29.5 36.5 65 10 6000 V33ZA70 20 33Z70 21 27 150 (Note 2) 2000 29.5 (Note 3) 36.5 58 20 13000 V36ZA80 20 36Z80 23 31 160 (Note 2) 2000 32 (Note 3) 40 63 20 12000 V39ZA05 5 Z39 25 31 0.3 100 35 46 79 1 500 V39ZA1 7 39Z1 25 31 1.2 250 35 43 79 2.5 1100 V39ZA3 10 39Z3 25 31 3 500 35 43 76 5 2700 V39ZA6 14 39Z6 25 31 6 1000 35 43 76 10 6000 V39ZA20 20 39Z20 25 31 20 2000 35 43 76 20 12000 V47ZA05 5 Z47 30 38 0.4 100 42 55 93 1 400 V47ZA1 7 47Z1 30 38 1.8 250 42 52 93 2.5 800 V47ZA3 10 47Z3 30 38 4.5 500 42 52 93 5 2000 V47ZA7 14 47Z7 30 38 8.8 1000 42 52 93 10 4500 V47ZA20 20 47Z20 30 38 23 2000 42 52 93 20 11000 V56ZA05 5 Z56 35 45 0.5 100 50 66 110 1 360 V56ZA2 7 56Z2 35 45 2.3 250 50 62 110 2.5 700 V56ZA3 10 56Z3 35 45 5.5 500 50 62 110 5 1800 V56ZA8 14 56Z8 35 45 10 1000 50 62 110 10 3900 V56ZA20 20 56Z20 35 45 30 2000 50 62 110 20 10000 V68ZA05 5 Z68 40 56 0.6 100 61 80 135 1 300 V68ZA2 7 68Z2 40 56 3 250 61 75 135 2.5 600 V68ZA3 10 68Z3 40 56 6.5 500 61 75 135 5 1500 V68ZA10 14 68Z10 40 56 13 1000 61 75 135 10 3300 V68ZA20 20 68Z20 40 56 33 2000 61 75 135 20 10000 V82ZA05 5 Z82 50 68 2 400 73 97 135 5 240 V82ZA2 7 82Z2 50 68 4 1200 73 91 135 10 500 V82ZA4 10 82Z4 50 68 8 2500 73 91 135 25 1100 V82ZA12 14 82Z12 50 68 15 4500 73 91 145 50 2500 V100ZA05 5 Z100 60 81 2.5 400 90 117 165 5 180 V100ZA3 7 100Z 60 81 5 1200 90 110 165 10 400 V100ZA4 10 100Z4 60 81 10 2500 90 110 165 25 900 V100ZA15 14 100Z15 60 81 20 4500 90 110 175 50 2000 4-36 ZA Series Device Ratings and Specifications (Note 1) (Continued) VDE Certified. License Number 116895E ZA Series Varistors are listed under UL File No. E135010 as a UL recognized component. MAXIMUM RATING (85oC) CONTINUOUS PART NUMBER † † † † † † † † † † † MODEL SIZE DISC DIA. (mm) BRAND SPECIFICATIONS (25oC) TRANSIENT VRMS VDC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs VM(AC) VM(DC) WTM ITM (V) (V) (J) (A) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN VNOM MAX (V) MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACITANCE f = 1MHz VC IPK C (V) (A) (pF) V120ZA05 5 Z120 75 102 3 400 108 138 205 5 140 V120ZA1 7 120Z 75 102 6 1200 108 132 205 10 300 V120ZA4 10 120Z4 75 102 12 2500 108 132 200 25 750 V120ZA6 14 120Z6 75 102 22 4500 108 132 210 50 1700 V120ZA20 20 120Z20 75 102 33 6500 108 132 210 100 1500 V150ZA05 5 Z150 92 127 4 400 135 173 250 5 120 V150ZA1 7 Z051 95 127 8 1200 135 165 250 10 250 V150ZA4 10 150Z4 95 127 15 2500 135 165 250 25 600 V150ZA8 14 150Z8 95 127 20 4500 135 165 250 50 1400 V150ZA20 20 150Z20 95 127 45 6500 135 165 250 100 1000 V180ZA05 5 Z180 110 153 5 400 162 207 295 5 100 V180ZA1 7 180Z 115 153 10 1200 162 198 300 10 200 V180ZA5 10 180Z5 115 153 18 2500 162 198 300 25 500 V180ZA10 14 180Z10 115 153 35 4500 162 198 300 50 1100 V180ZA20 20 180Z20 115 153 52 6500 162 198 300 100 2400 V205ZA05 5 Z205 130 170 5.5 400 184 226 340 5 100 V220ZA05 5 Z220 140 180 6 400 198 253 360 5 90 V240ZA05 5 Z240 150 200 7 400 216 264 395 5 80 V270ZA05 5 Z270 175 225 7.5 400 243 311 455 5 70 V330ZA05 5 Z330 210 275 9 400 297 380 540 5 60 V360ZA05 5 Z360 230 300 9.5 400 324 396 595 5 55 V390ZA05 5 Z390 250 330 10 400 351 449 650 5 50 V430ZA05 5 Z430 275 369 11 400 387 495 710 5 45 V470ZA05 5 Z470 300 385 12 400 420 517 775 5 35 V620ZA05 5 Z620 385 505 13 400 558 682 1025 5 33 V680ZA05 5 Z680 420 560 14 400 610 748 1120 5 32 V715ZA05 5 Z715 440 585 15.5 400 643 787 1180 5 31 V750ZA05 5 Z750 460 615 17 400 675 825 1240 5 30 NOTES: 1. Average power dissipation of transients not to exceed 0.2W, 0.25W, 0.4W, 0.6W or 1W for model sizes 5mm, 7mm, 10mm, 14mm and 20mm, respectively. 2. Energy rating for impulse duration of 30ms minimum to one half of peak current (auto load dump). 3. 10mA DC test current. 4. Also rated to withstand 24V for 5 minutes. 5. Higher voltages available, contact Littelfuse. † Also listed to UL1449, Second Edition, “Transient Voltage Surge Suppressors” File #E75961. 4-37 ZA Series Power Dissipation Ratings 1. 100 90 PERCENT OF RATED VALUE Should transients occur in rapid succession, the average power dissipation required is simply the energy (wattseconds) 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 temperatures as shown in Figure 1. 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. 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150 AMBIENT TEMPERATURE (oC) PERCENT OF PEAK VALUE FIGURE 1. CURRENT, ENERGY AND POWER DERATING CURVE 100 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 90 50 10 O1 T TIME T1 T2 FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM Transient V-I Characteristics Curves 2000 MAX CLAMPING VOLTAGE MODEL SIZE 5mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) 600 500 400 300 200 100 90 80 70 60 50 40 V68ZA05 V56ZA05 V47ZA05 V39ZA05 V33ZA05 V27ZA05 30 V22ZA05 V18ZA05 20 V12ZA05 MAX CLAMPING VOLTAGE MODEL SIZE 5mm 82 TO 330VN(DC) RATING TA = -55oC TO 85oC V330ZA05 V270ZA05 V240ZA05 V220ZA05 V205ZA05 V180ZA05 V150ZA05 V120ZA05 1000 500 05 ZA 00 1 V 5 A0 2Z V8 200 V8ZA05 10 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 FIGURE 3. CLAMPING VOLTAGE FOR V8ZA05 - V68ZA05 4-38 100 0.0001 0.001 0.01 0.1 1 10 100 1000 PEAK AMPERES (A) FIGURE 4. CLAMPING VOLTAGE FOR V82ZA05 - V330ZA05 ZA Series Transient V-I Characteristics Curves 2000 1000 (Continued) 500 400 MAX CLAMPING VOLTAGE MODEL SIZE 5mm 360 TO 750VN(DC) RATING TA = -55oC TO 85oC V750ZA05 V715ZA05 V680ZA05 V620ZA05 V470ZA05 V430ZA05 V390ZA05 V360ZA05 300 MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) 3000 200 100 90 80 70 60 50 40 30 20 500 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC V68ZA2 V56ZA2 V47ZA1 V39ZA1 V33ZA1 V27ZA1 V22ZA1 V18ZA1 V12ZA1 V8ZA1 0.0001 0.001 0.01 0.1 1 10 PEAK AMPERES (A) 100 10 10-3 1000 FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05 - V750ZA05 3,000 MAXIMUM PEAK VOLTS (V) 2,000 500 400 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC 1,000 900 800 700 600 500 400 300 V180ZA1 V150ZA1 V120ZA1 V100ZA3 V82ZA2 300 200 100 10-3 10-1 100 101 102 103 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 10mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC 30 V68ZA3 V56ZA3 V47ZA3 V39ZA3 V33ZA2 V27ZA2 V22ZA2 V18ZA2 V12ZA2 600 500 400 300 V180ZA5 V150ZA4 V120ZA4 V100ZA4 V82ZA4 300 200 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4 - V180ZA5 4-39 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2 - V68ZA3 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 10mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC 1,000 900 800 700 600 500 400 100 10-3 100 90 80 70 60 50 40 10 10-3 104 MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) 2,000 103 V8ZA2 10-2 FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2 - V180ZA1 3,000 102 200 20 PEAK AMPERES (A) 4,000 10-1 100 101 PEAK AMPERES (A) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1 - V68ZA2 MAXIMUM PEAK VOLTS (V) 4,000 10-2 104 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 18 TO 68VN(DC) RATING TA = -55oC TO 85oC 200 100 90 80 V68ZA10 70 V56ZA8 60 V47ZA7 50 V39ZA6 V33ZA5 40 V27ZA4 30 V22ZA3 V18ZA3 20 -3 10-2 10 10-1 100 101 PEAK AMPERES (A) 102 103 FIGURE 10. CLAMPING VOLTAGE FOR V18ZA3 - V68ZA10 ZA Series Transient V-I Characteristics Curves 4,000 300 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC 2,000 1,000 900 800 700 600 500 400 V180ZA10 V150ZA8 V120ZA6 V100ZA15 V82ZA12 300 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 18 TO 36VN(DC) RATING TA = -55oC TO 85oC 200 MAXIMUM PEAK VOLTS (V) 3,000 MAXIMUM PEAK VOLTS (V) (Continued) 200 V36ZA80 V33ZA70 V27ZA60 V24ZA50 V18ZA40 100 90 80 70 60 50 40 30 100 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 20 10-3 104 FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12 - V180ZA10 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104 FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40 - V36ZA80 MAXIMUM PEAK VOLTS (V) 1,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 39 TO 180VM(AC) RATING 500 TA = -55oC TO 85oC V180ZA20 V150ZA20 V120ZA20 300 200 V68ZA20 V56ZA20 V47ZA20 V39ZA20 100 50 30 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 104 FIGURE 13. CLAMPING VOLTAGE FOR V39ZA20 - V180ZA20 Pulse Rating Curves 50 100 MODEL SIZE 5mm V8ZA05 1 104 5 10 6 10 2 10 10 5 102 103 2 1 0.5 20 102 10 103 0.1 20 INDEFINITE 100 10 104 5 10 6 10 MODEL SIZE 5mm V12ZA05 - V68ZA05 2 1 0.5 0.2 1 2 50 SURGE CURRENT (A) SURGE CURRENT (A) 20 INDEFINITE 0.2 1,000 IMPULSE DURATION (µs) 10,000 FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05 4-40 0.1 20 100 1,000 IMPULSE DURATION (µs) FIGURE 15. SURGE CURRENT RATING CURVES FOR V12ZA05 - V68ZA05 10,000 ZA Series Pulse Rating Curves (Continued) 200 500 1 100 10 50 102 10 5 INDEFINITE 0.2 20 100 1,000 IMPULSE DURATION (µs) 5 2 INDEFINITE 20 100 1,000 IMPULSE DURATION (µs) 10,000 2,000 1 200 2 104 105 6 10 10 100 MODEL SIZE 7mm V18ZA1 - V68ZA2 103 104 105 106 10 103 20 10 5 2 2 500 102 50 MODEL SIZE 7mm V82ZA2 - V180ZA1 1 1,000 SURGE CURRENT (A) SURGE CURRENT (A) 103 10 FIGURE 17. SURGE CURRENT RATING CURVES FOR V8ZA1 - V12ZA1 500 INDEFINITE 200 102 100 50 20 10 INDEFINITE 5 1 0.5 2 20 100 1,000 IMPULSE DURATION (µs) 1 20 10,000 FIGURE 18. SURGE CURRENT RATING CURVES FOR V18ZA1 - V68ZA2 100 1,000 1 200 2 100 10 104 105 6 10 MODEL SIZE 10mm V8ZA2 - V12ZA2 10,000 MODEL SIZE 10mm V18ZA2 - V68ZA3 1 500 2 200 SURGE CURRENT (A) 102 103 20 10 5 2 1,000 IMPULSE DURATION (µs) FIGURE 19. SURGE CURRENT RATING CURVES FOR V82ZA2 - V180ZA1 500 SURGE CURRENT (A) MODEL SIZE 7mm V8ZA1 - V12ZA1 102 20 0.2 10,000 FIGURE 16. SURGE CURRENT RATING CURVES FOR V82ZA05 - V750ZA05 INDEFINITE 104 105 106 100 102 3 50 10 20 10 INDEFINITE 5 1 0.5 0.2 104 5 10 6 10 0.5 0.5 50 10 1 1 0.2 2 50 20 2 1 100 SURGE CURRENT (A) 2 SURGE CURRENT (A) 200 MODEL SIZE 5mm V82ZA05 - V750ZA05 103 4 10 5 10 6 10 2 20 100 1,000 IMPULSE DURATION (µs) FIGURE 20. SURGE CURRENT RATING CURVES FOR V8ZA2 - V127ZA2 4-41 10,000 1 20 100 1,000 IMPULSE DURATION (µs) FIGURE 21. SURGE CURRENT RATING CURVES FOR V18ZA2 - V68ZA3 10,000 ZA Series Pulse Rating Curves (Continued) 5,000 2,000 2 104 5 10 6 10 10 500 200 103 100 50 20 100 1,000 IMPULSE DURATION (µs) 100 50 20 10 INDEFINITE 1 2,000 2 1,000 10 2,000 MODEL SIZE 14mm V82ZA12 - V180ZA10 102 3 10 104 105 106 500 100 1,000 IMPULSE DURATION (µs) 10,000 FIGURE 23. SURGE CURRENT RATING CURVES FOR V18ZA3 - V68ZA10 2 1,000 SURGE CURRENT (A) 5,000 1 20 10,000 FIGURE 22. SURGE CURRENT RATING CURVES FOR V82ZA4 - V180ZA5 SURGE CURRENT (A) MODEL SIZE 14mm V18ZA3 - V68ZA10 2 2 20 200 100 50 20 1 MODEL SIZE 20mm V18ZA40 - V68ZA20 10 500 102 200 103 100 104 50 105 106 20 10 INDEFINITE INDEFINITE 5 5 2 20 10 5 INDEFINITE 5 10 103 104 105 106 200 102 102 10 1 2 500 SURGE CURRENT (A) SURGE CURRENT (A) 1,000 1,000 MODEL SIZE 10mm V82ZA4 - V180ZA5 1 100 1,000 IMPULSE DURATION (µs) 10,000 FIGURE 24. SURGE CURRENT RATING CURVES FOR V82ZA12 - V180ZA10 10,000 5,000 SURGE CURRENT (A) 10,000 MODEL SIZE 20mm V120ZA20 - V180ZA20 102 500 103 200 104 105 106 100 50 10 1,000 IMPULSE DURATION (µs) 10 1,000 20 100 FIGURE 25. SURGE CURRENT RATING CURRENT FOR V18ZA40 - V68ZA20 1 2 2,000 2 20 INDEFINITE 5 2 1 20 100 1,000 10,000 IMPULSE DURATION (µs) FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20 - V180ZA20 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. 4-42 ZA Series Tape and Reel Specifications Tape and Reel Data • Conforms to ANSI and EIA specifications • Can be supplied to IEC Publication 286-2 • Radial devices on tape are supplied with crimped leads, straight leads, or undercrimped leads MODEL SIZE SYMBOL PARAMETER P Pitch of Component 5mm 7mm 10mm 14mm 20mm 12.7 ± 1.0 12.7 ± 1.0 25.4 ± 1.0 25.4 ± 1.0 25.4 ± 1.0 12.7 ± 0.2 P0 Feed Hole Pitch 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2 P1 Feed Hole Center to Pitch 3.85 ± 0.7 3.85 ± 0.7 2.6 ± 0.7 2.6 ± 0.7 2.6 ± 0.7 P2 Hole Center to Component Center 6.35 ± 1.0 6.35 ± 1.0 6.35 ± 1.0 6.35 ± 1.0 6.35 ± 1.0 7.5 ± 1.0 F Lead to Lead Distance 5.0 ± 1.0 5.0 ± 1.0 7.5 ± 1.0 7.5 ± 1.0 ∆h Component Alignment 2.0 Max 2.0 Max 2.0 Max 2.0 Max 2.0 Max W Tape Width 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 W0 Hold Down Tape Width 6.0 ± 0.3 6.0 ± 0.3 6.0 ± 0.3 6.0 ± 0.3 12.0 ± 0.3 W1 Hole Position 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 0.5 Max 0.5 Max 0.5 Max 0.5 Max 0.5 Max H Height from Tape Center to Component Base 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 W2 Hold Down Tape Position H0 Seating Plane Height 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 H1 Component Height 29.0 Max 32.0 Max 36.0 Max 40.0 Max 46.5 Max D0 Feed Hole Diameter 4.0 ± 0.2 4.0 ± 0.2 4.0 ± 0.2 4.0 ± 0.2 4.0 ± 0.2 t Total Tape Thickness 0.7 ± 0.2 0.7 ± 0.2 0.7 ± 0.2 0.7 ± 0.2 0.7 ± 0.2 L Length of Clipped Lead 11.0 Max 11.0 Max 11.0 Max 11.0 Max 12.0 Max ∆p Component Alignment 3o Max 3o Max 3o Max 3o Max 3o Max NOTE: Dimensions are in mm. 4-43 ZA Series Tape and Reel Ordering Information SHIPPING QUANTITY Crimped leads are standard on ZA types supplied in tape and reel and are denoted by the model letter “T”. Model letter “S” denotes straight leads and letter “U” denotes special under-crimped leads. SIZE RMS (MAX) VOLTAGE QUANTITY PER REEL “T” REEL “S” REEL “U” REEL 5mm All 1000 1000 1000 7mm All 1000 1000 1000 10mm All 1000 1000 1000 Example: STANDARD MODEL CRIMPED LEADS STRAIGHT LEADS UNDERCRIMPED LEADS 14mm < 300V 500 500 500 14mm ≥ 300V 500 500 500 V18ZA3 V18ZT3 V18ZS3 V18ZU3 20mm < 300V 500 500 500 20mm ≥ 300V 500 500 500 Mechanical Dimensions VARISTOR MODEL SIZE 5mm SYMBOL VOLTAGE MODEL A 7mm 10mm 14mm 20mm MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX All - 10 (0.394) - 12 (0.472) - 16 (0.630) - 20 (0.787) - 26.5 (1.043) ØD All - 7 (0.276) - 9 (0.354) - 12.5 (0.492) - 17 (0.669) - 23 (0.906) e All 4 (0.157) 6 (0.236) 4 (0.157) 6 (0.236) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 8.5 (0.256) (0.335) (Note 6) (Note 6) e1 V8ZAV56ZA 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) V68ZAV100ZA 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) NA (NA) NA (NA) V120ZAV180ZA 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.038) 1 (0.118) NA (NA) NA (NA) V205ZAV750ZA 1.5 (0.059) 3.5 (0.138) - - - - - - - - V8ZAV56ZA - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) V68ZAV100ZA - 5.6 (0.220) - 5.6 (0.220) - 5.6 (0.220) - 5.6 (0.220) - 5.6 (0.220) V120ZAV180ZA - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) V205ZAV750ZA - 5.6 (0.220) - - - - - - - - All 0.585 (0.023) 0.685 (0.027) 0.585 (0.023) 0.685 (0.027) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) E Øb NOTES: Dimensions in millimeters, inches in parentheses. 6. 10mm ALSO AVAILABLE; See Additional Lead Style Options. 7. V24ZA50 only supplied with lead spacing of 6.35mm ± 0.5mm (0.25 ± 0.0196) Dimension E = 5.85 min. 4-44 3 (0.118) ZA Series Additional Lead Style Options Radial lead types can be supplied with combination preformed crimp and trimmed leads. This option is supplied to the dimensions shown. *SEATING PLANE INTERPRETATION PER IEC-717 CRIMPED AND TRIMMED LEAD VARISTOR MODEL SIZE 5mm 7mm 10mm 14mm 20mm SYMBOL MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX A - 13.0 (0.512) - 15 (0.591) - 19.5 (0.768) - 22.5 (0.886) - 29.0 (1.142) LTRIM 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) NOTE: Dimensions in millimeters, inches in parentheses. • To order this crimped and trimmed lead style, standard radial type model numbers are changed by replacing the model letter “ZA” with “ZC”. This option is supplied in bulk only. Example: • For 10/±1mm lead spacing on 20mm diameter models only; append standard model numbers by adding “X10”. Example: STANDARD CATALOG MODEL ORDER AS: STANDARD CATALOG MODEL ORDER AS: V18ZA3 V18ZC3 V18ZA40 V18ZA40X10 • For crimped leads without trimming and any variations to the above, contact Littelfuse. Ordering Information V XXX ZA XX VARISTOR VARISTOR NOMINAL VOLTAGE (VNOM) (One, Two or Three Digits) 4-45 RELATIVE ENERGY INDICATOR (One or Two Digits) SERIES DESIGNATOR/ LEAD STYLE DESIGNATOR ZC = Crimped and Clipped ZS = Straight ZT = Crimped ZU = Under Crimped