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ZA Series
Data Sheet July 1999 File Number 2184.6
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.
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
(c) Littelfuse, Inc. 1999
ZA Series
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart. ZA SERIES Continuous: Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transient: Peak Pulse Current (ITM) For 8/20s Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Pulse Energy Range (Note 1) For 10/1000s Current Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature Coefficient (V) 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UNITS
4 to 460 5.5 to 615
V V
50 to 6500 0.1 to 52 -55 to 85 -55 to 125 <0.01 2500 1000
A J
oC oC
%/oC V M
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 TRANSIENT ENERGY 10 x 1000s WTM (J) 0.1 0.4 0.8 0.14 0.6 1.2 0.17 0.8 1.5 3.5 80 (Note 2) 0.2 0.9 2 4 100 (Note 2) 0.25 1 2.5 5 120 (Note 2) PEAK CURRENT 8 x 20s ITM (A) 50 100 250 50 100 250 100 250 500 1000 2000 100 250 500 1000 2000 100 250 500 1000 2000 6 6 6 9 9 9 14.4 14.4 14.4 14.4 14.4 (Note 3) 18.7 18.7 18.7 18.7 19.2 (Note 3) 23 23 23 23 23 (Note 3) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 11 11 11 16 16 16 21.6 21.6 21.6 21.6 21.6 26 26 26 26 26 31.1 31.1 31.1 31.1 31.1 VNOM MAX SPECIFICATIONS (25oC) MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 30 22 20 37 34 30 36 36 36 36 37 43 43 43 43 43 53 53 53 53 50 IPK (A) 1 2.5 5 1 2.5 5 1 2.5 5 10 20 1 2.5 5 10 20 1 2.5 5 10 20 TYPICAL CAPACITANCE f = 1MHz C (pF) 1400 3000 7500 1200 2500 6000 1000 2000 5000 11000 22000 800 1600 4000 9000 18000 600 1300 3000 7000 13000
PART NUMBER V8ZA05 V8ZA1 V8ZA2 V12ZA05 V12ZA1 V12ZA2 V18ZA05 V18ZA1 V18ZA2 V18ZA3 V18ZA40 V22ZA05 V22ZA1 V22ZA2 V22ZA3 V24ZA50 V27ZA05 V27ZA1 V27ZA2 V27ZA4 V27ZA60
MODEL SIZE DISC DIA. (mm) 5 7 10 5 7 10 5 7 10 14 20 5 7 10 14 20 5 7 10 14 20
VRMS VM(AC) BRAND Z08 08Z1 08Z2 Z12 12Z1 12Z2 Z18 18Z1 18Z2 18Z3 18Z40 Z22 22Z1 22Z2 22Z3 24Z50 Z27 27Z1 27Z2 27Z4 27Z60 (V) 4 4 4 6 6 6 10 10 10 10 10 14 14 14 14 14 17 17 17 17 17
VDC VM(DC) (V) 5.5 5.5 5.5 8 8 8 14 14 14 14 14 18 18 18 18 18 (Note 4) 22 22 22 22 22
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 TRANSIENT ENERGY 10 x 1000s WTM (J) 0.3 1.2 3 6 150 (Note 2) 160 (Note 2) 0.3 1.2 3 6 20 0.4 1.8 4.5 8.8 23 0.5 2.3 5.5 10 30 0.6 3 6.5 13 33 2 4 8 15 2.5 5 10 20 PEAK CURRENT 8 x 20s ITM (A) 100 250 500 1000 2000 2000 100 250 500 1000 2000 100 250 500 1000 2000 100 250 500 1000 2000 100 250 500 1000 2000 400 1200 2500 4500 400 1200 2500 4500 29.5 29.5 29.5 29.5 29.5 (Note 3) 32 (Note 3) 35 35 35 35 35 42 42 42 42 42 50 50 50 50 50 61 61 61 61 61 73 73 73 73 90 90 90 90 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 38 36.5 36.5 36.5 36.5 40 46 43 43 43 43 55 52 52 52 52 66 62 62 62 62 80 75 75 75 75 97 91 91 91 117 110 110 110 VNOM MAX SPECIFICATIONS (25oC) MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 65 65 65 65 58 63 79 79 76 76 76 93 93 93 93 93 110 110 110 110 110 135 135 135 135 135 135 135 135 145 165 165 165 175 IPK (A) 1 2.5 5 10 20 20 1 2.5 5 10 20 1 2.5 5 10 20 1 2.5 5 10 20 1 2.5 5 10 20 5 10 25 50 5 10 25 50 TYPICAL CAPACITANCE f = 1MHz C (pF) 500 1100 2700 6000 13000 12000 500 1100 2700 6000 12000 400 800 2000 4500 11000 360 700 1800 3900 10000 300 600 1500 3300 10000 240 500 1100 2500 180 400 900 2000
PART NUMBER V33ZA05 V33ZA1 V33ZA2 V33ZA5 V33ZA70 V36ZA80 V39ZA05 V39ZA1 V39ZA3 V39ZA6 V39ZA20 V47ZA05 V47ZA1 V47ZA3 V47ZA7 V47ZA20 V56ZA05 V56ZA2 V56ZA3 V56ZA8 V56ZA20 V68ZA05 V68ZA2 V68ZA3 V68ZA10 V68ZA20 V82ZA05 V82ZA2 V82ZA4 V82ZA12 V100ZA05 V100ZA3 V100ZA4 V100ZA15
MODEL SIZE DISC DIA. (mm) 5 7 10 14 20 20 5 7 10 14 20 5 7 10 14 20 5 7 10 14 20 5 7 10 14 20 5 7 10 14 5 7 10 14
VRMS VM(AC) BRAND Z33 33Z1 33Z2 33Z5 33Z70 36Z80 Z39 39Z1 39Z3 39Z6 39Z20 Z47 47Z1 47Z3 47Z7 47Z20 Z56 56Z2 56Z3 56Z8 56Z20 Z68 68Z2 68Z3 68Z10 68Z20 Z82 82Z2 82Z4 82Z12 Z100 100Z 100Z4 100Z15 (V) 20 20 20 20 21 23 25 25 25 25 25 30 30 30 30 30 35 35 35 35 35 40 40 40 40 40 50 50 50 50 60 60 60 60
VDC VM(DC) (V) 26 26 26 26 27 31 31 31 31 31 31 38 38 38 38 38 45 45 45 45 45 56 56 56 56 56 68 68 68 68 81 81 81 81
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 TRANSIENT ENERGY 10 x 1000s WTM (J) 3 6 12 22 33 4 8 15 20 45 5 10 18 35 52 5.5 6 7 7.5 9 9.5 10 11 12 13 14 15.5 17 PEAK CURRENT 8 x 20s ITM (A) 400 1200 2500 4500 6500 400 1200 2500 4500 6500 400 1200 2500 4500 6500 400 400 400 400 400 400 400 400 400 400 400 400 400 108 108 108 108 108 135 135 135 135 135 162 162 162 162 162 184 198 216 243 297 324 351 387 420 558 610 643 675 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 138 132 132 132 132 173 165 165 165 165 207 198 198 198 198 226 253 264 311 380 396 449 495 517 682 748 787 825 VNOM MAX SPECIFICATIONS (25oC) MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 205 205 200 210 210 250 250 250 250 250 295 300 300 300 300 340 360 395 455 540 595 650 710 775 1025 1120 1180 1240 IPK (A) 5 10 25 50 100 5 10 25 50 100 5 10 25 50 100 5 5 5 5 5 5 5 5 5 5 5 5 5 TYPICAL CAPACITANCE f = 1MHz C (pF) 140 300 750 1700 1500 120 250 600 1400 1000 100 200 500 1100 2400 100 90 80 70 60 55 50 45 35 33 32 31 30
PART NUMBER V120ZA05 V120ZA1 V120ZA4 V120ZA6 V120ZA20 V150ZA05 V150ZA1 V150ZA4
MODEL SIZE DISC DIA. (mm) 5 7 10 14 20 5 7 10 14 20 5 7 10 14 20 5 5 5 5 5 5 5 5 5 5 5 5 5
VRMS VM(AC) BRAND Z120 120Z 120Z4 120Z6 120Z20 Z150 Z051 150Z4 150Z8 150Z20 Z180 180Z 180Z5 180Z10 180Z20 Z205 Z220 Z240 Z270 Z330 Z360 Z390 Z430 Z470 Z620 Z680 Z715 Z750 (V) 75 75 75 75 75 92 95 95 95 95 110 115 115 115 115 130 140 150 175 210 230 250 275 300 385 420 440 460
VDC VM(DC) (V) 102 102 102 102 102 127 127 127 127 127 153 153 153 153 153 170 180 200 225 275 300 330 369 385 505 560 585 615
V150ZA8 V150ZA20 V180ZA05 V180ZA1 V180ZA5 V180ZA10 V180ZA20 V205ZA05

V220ZA05 V240ZA05 V270ZA05 V330ZA05 V360ZA05 V390ZA05 V430ZA05 V470ZA05 V620ZA05 V680ZA05 V715ZA05 V750ZA05 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
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.
1.
100 90 PERCENT OF RATED VALUE 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. CURRENT, ENERGY AND POWER DERATING CURVE
PERCENT OF PEAK VALUE
100 90
50
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
10 O1 T T1 T2 TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
600 500 400 300 MAXIMUM PEAK VOLTS (V) 200 MAX CLAMPING VOLTAGE MODEL SIZE 5mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V) 2000 V330ZA05 V270ZA05 V240ZA05 V220ZA05 V205ZA05 V180ZA05 V150ZA05 V120ZA05 MAX CLAMPING VOLTAGE MODEL SIZE 5mm 82 TO 330VN(DC) RATING TA = -55oC TO 85oC
1000
100 90 80 70 60 50 40
500
V68ZA05 V56ZA05 V47ZA05 V39ZA05 V33ZA05 V27ZA05 30 V22ZA05 V18ZA05 20 V12ZA05 V8ZA05
200
5 A0 0Z 10 V 5 A0 2Z V8
10 10-3
10-2
10-1 100 101 PEAK AMPERES (A)
102
103
100 0.0001
0.001
0.01
0.1
1
10
100
1000
PEAK AMPERES (A)
FIGURE 3. CLAMPING VOLTAGE FOR V8ZA05 - V68ZA05
FIGURE 4. CLAMPING VOLTAGE FOR V82ZA05 - V330ZA05
4-38
ZA Series Transient V-I Characteristics Curves
3000
(Continued)
500 400 300 MAXIMUM PEAK VOLTS (V) 200 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
2000
1000
V750ZA05 V715ZA05 V680ZA05 V620ZA05 V470ZA05 V430ZA05 V390ZA05 V360ZA05
MAX CLAMPING VOLTAGE MODEL SIZE 5mm 360 TO 750VN(DC) RATING TA = -55oC TO 85oC
100 90 80 70 60 50 40 30 20
500
V68ZA2 V56ZA2 V47ZA1 V39ZA1 V33ZA1 V27ZA1 V22ZA1 V18ZA1 V12ZA1 V8ZA1
0.0001
0.001
0.01
0.1 1 10 PEAK AMPERES (A)
100
1000
10 10-3
10-2
10-1 100 101 PEAK AMPERES (A)
102
103
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05 - V750ZA05
4,000 3,000 2,000 MAXIMUM PEAK VOLTS (V)
FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1 - V68ZA2
500 400 300 MAXIMUM PEAK VOLTS (V) 200
MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC
MAXIMUM CLAMPING VOLTAGE MODEL SIZE 10mm 8 TO 68VN(DC) RATING TA = -55oC TO 85oC
1,000 900 800 700 600 500 400 300 200
V180ZA1 V150ZA1 V120ZA1 V100ZA3 V82ZA2
100 90 80 70 60 50 40 30 20
V68ZA3 V56ZA3 V47ZA3 V39ZA3 V33ZA2 V27ZA2 V22ZA2 V18ZA2 V12ZA2 V8ZA2
100 10-3
10-2
10-1
100
101
102
103
104
PEAK AMPERES (A)
10 10-3
10-2
10-1 100 101 PEAK AMPERES (A)
102
103
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2 - V180ZA1
FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2 - V68ZA3
4,000 3,000 2,000 MAXIMUM PEAK VOLTS (V)
MAXIMUM CLAMPING VOLTAGE MODEL SIZE 10mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V)
600 500 400 300 200
MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 18 TO 68VN(DC) RATING TA = -55oC TO 85oC
1,000 900 800 700 600 500 400 300 200
V180ZA5 V150ZA4 V120ZA4 V100ZA4 V82ZA4
100 10-3
10-2
10-1
100 101 102 PEAK AMPERES (A)
103
104
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 9. CLAMPING VOLTAGE FOR V82ZA4 - V180ZA5
FIGURE 10. CLAMPING VOLTAGE FOR V18ZA3 - V68ZA10
4-39
ZA Series Transient V-I Characteristics Curves
4,000 3,000 2,000 MAXIMUM PEAK VOLTS (V) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 82 TO 180VN(DC) RATING TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V)
(Continued)
300 200 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 18 TO 36VN(DC) RATING TA = -55oC TO 85oC
1,000 900 800 700 600 500 400 300 200
V180ZA10 V150ZA8 V120ZA6 V100ZA15 V82ZA12
100 90 80 70 60 50 40 30 20 10-3
V36ZA80 V33ZA70 V27ZA60 V24ZA50 V18ZA40
100 10-3
10-2
10-1
100 101 102 PEAK AMPERES (A)
103
104
10-2
10-1
100 101 102 PEAK AMPERES (A)
103
104
FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12 - V180ZA10
FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40 - V36ZA80
1,000
MAXIMUM PEAK VOLTS (V)
MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 39 TO 180VM(AC) RATING 500 TA = -55oC TO 85oC 300 200
V180ZA20 V150ZA20 V120ZA20
100
V68ZA20 V56ZA20 V47ZA20 V39ZA20
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 1 20 SURGE CURRENT (A) 10 2 10 104 5 10 6 10 MODEL SIZE 5mm V8ZA05 50 20 SURGE CURRENT (A) 10 102 103 100 2 1 10 104 5 10 6 10 MODEL SIZE 5mm V12ZA05 - V68ZA05
5 102 103 2 1 0.5
2 1 0.5 INDEFINITE
0.2 0.1 20
INDEFINITE 100 1,000 IMPULSE DURATION (s) 10,000
0.2 0.1 20 100 1,000 IMPULSE DURATION (s) 10,000
FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05
FIGURE 15. SURGE CURRENT RATING CURVES FOR V12ZA05 - V68ZA05
4-40
ZA Series Pulse Rating Curves
500 1 200 100 SURGE CURRENT (A) 50 20 10 5 2 1 0.5 0.2 20 INDEFINITE 2 10 102 103 4 10 5 10 6 10 MODEL SIZE 5mm V82ZA05 - V750ZA05 SURGE CURRENT (A)
(Continued)
200 100 50 20 10 5 1 2 10 102 103 104 5 10 6 10 MODEL SIZE 7mm V8ZA1 - V12ZA1
2 1 0.5 0.2 INDEFINITE
100
1,000 IMPULSE DURATION (s)
10,000
20
100
1,000 IMPULSE DURATION (s)
10,000
FIGURE 16. SURGE CURRENT RATING CURVES FOR V82ZA05 - V750ZA05
500 1 200 100 SURGE CURRENT (A) 50 20 10 5 2 1 0.5 0.2 INDEFINITE 10 102 103 2 104 105 6 10 MODEL SIZE 7mm V18ZA1 - V68ZA2
FIGURE 17. SURGE CURRENT RATING CURVES FOR V8ZA1 - V12ZA1
2,000 1 1,000 500 SURGE CURRENT (A) 200 100 50 20 10 5 2 INDEFINITE 2 10 102 103 104 105 106 MODEL SIZE 7mm V82ZA2 - V180ZA1
20
100
1,000 IMPULSE DURATION (s)
10,000
1 20
100
1,000 IMPULSE DURATION (s)
10,000
FIGURE 18. SURGE CURRENT RATING CURVES FOR V18ZA1 - V68ZA2
500 1 200 100 SURGE CURRENT (A) 50 20 10 5 2 1 0.5 0.2 INDEFINITE 2 10 102 103 104 105 6 10 MODEL SIZE 10mm V8ZA2 - V12ZA2
FIGURE 19. SURGE CURRENT RATING CURVES FOR V82ZA2 - V180ZA1
1,000 500 200 SURGE CURRENT (A) 100 102
3 50 10
1 2
MODEL SIZE 10mm V18ZA2 - V68ZA3
104 105 106
20 10 5 2 INDEFINITE
20
100
1,000 IMPULSE DURATION (s)
10,000
1
20
100
1,000 IMPULSE DURATION (s)
10,000
FIGURE 20. SURGE CURRENT RATING CURVES FOR V8ZA2 - V127ZA2
FIGURE 21. SURGE CURRENT RATING CURVES FOR V18ZA2 - V68ZA3
4-41
ZA Series Pulse Rating Curves
5,000 1 2,000 1,000 SURGE CURRENT (A) 500 200 100 50 20 10 5 2 20 INDEFINITE 2 10 102 103 104 5 10 6 10
(Continued)
MODEL SIZE 10mm V82ZA4 - V180ZA5 1,000 2 500 10 1 103 104 105 106 MODEL SIZE 14mm V18ZA3 - V68ZA10
200 102 SURGE CURRENT (A) 100 50 20 10 5 2 INDEFINITE
100
1,000 IMPULSE DURATION (s)
10,000
1 20
100
1,000 IMPULSE DURATION (s)
10,000
FIGURE 22. SURGE CURRENT RATING CURVES FOR V82ZA4 - V180ZA5
5,000 2,000 1,000 SURGE CURRENT (A) 500 200 100 50 20 10 5 2 20 INDEFINITE 2 10 1
FIGURE 23. SURGE CURRENT RATING CURVES FOR V18ZA3 - V68ZA10
2,000 2 1,000 500 SURGE CURRENT (A) 200 100 50 20 10 5 2 20 INDEFINITE 10 102 103 104 105 1
MODEL SIZE 14mm V82ZA12 - V180ZA10 102 3 10 104 105 106
MODEL SIZE 20mm V18ZA40 - V68ZA20 106
100 1,000 IMPULSE DURATION (s)
10,000
100
1,000 IMPULSE DURATION (s)
10,000
FIGURE 24. SURGE CURRENT RATING CURVES FOR V82ZA12 - V180ZA10
10,000 5,000 2,000 SURGE CURRENT (A) 1,000 500 200 100 50 20 10 5 2 1 20 100
FIGURE 25. SURGE CURRENT RATING CURRENT FOR V18ZA40 - V68ZA20
MODEL SIZE 20mm V120ZA20 - V180ZA20
1 2 10 102 103 104 105 106 INDEFINITE
1,000 IMPULSE DURATION (s)
10,000
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 P P0 P1 P2 F h W W0 W1 W2 H H0 H1 D0 t L p PARAMETER Pitch of Component Feed Hole Pitch Feed Hole Center to Pitch Hole Center to Component Center Lead to Lead Distance Component Alignment Tape Width Hold Down Tape Width Hole Position Hold Down Tape Position Height from Tape Center to Component Base Seating Plane Height Component Height Feed Hole Diameter Total Tape Thickness Length of Clipped Lead Component Alignment 5mm 12.7 1.0 12.7 0.2 3.85 0.7 6.35 1.0 5.0 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 29.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 7mm 12.7 1.0 12.7 0.2 3.85 0.7 6.35 1.0 5.0 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 32.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 10mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 1.0 7.5 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 36.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 14mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 1.0 7.5 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 40.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 20mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 1.0 7.5 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 12.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 46.5 Max 4.0 0.2 0.7 0.2 12.0 Max 3o Max
NOTE: Dimensions are in mm.
4-43
ZA Series Tape and Reel Ordering Information
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. Example:
UNDERCRIMPED LEADS V18ZU3 SIZE 5mm 7mm 10mm STANDARD MODEL V18ZA3 CRIMPED LEADS V18ZT3 STRAIGHT LEADS V18ZS3 14mm 14mm 20mm 20mm SHIPPING QUANTITY RMS (MAX) VOLTAGE All All All < 300V 300V < 300V 300V QUANTITY PER REEL "T" REEL 1000 1000 1000 500 500 500 500 "S" REEL 1000 1000 1000 500 500 500 500 "U" REEL 1000 1000 1000 500 500 500 500
Mechanical Dimensions
VARISTOR MODEL SIZE 5mm SYMBOL A VOLTAGE MODEL All MIN 4 (0.157) MAX 10 (0.394) 7 (0.276) 6 (0.236) MIN 4 (0.157) 7mm MAX 12 (0.472) 9 (0.354) 6 (0.236) 10mm MIN 6.5 (0.256) MAX 16 (0.630) 12.5 (0.492) 8.5 (0.335) 14mm MIN 6.5 (0.256) MAX 20 (0.787) 17 (0.669) 8.5 (0.335) 20mm MIN MAX 26.5 (1.043) 23 (0.906)
OD
All
e
All
6.5 8.5 (0.256) (0.335) (Note 6) (Note 6) 1 (0.039) 3 (0.118)
e1
V8ZAV56ZA V68ZAV100ZA V120ZAV180ZA V205ZAV750ZA
1 (0.039) 1.5 (0.059) 1 (0.039) 1.5 (0.059) 0.585 (0.023)
3 (0.118) 3.5 (0.138) 3 (0.118) 3.5 (0.138) 5 (0.197) 5.6 (0.220) 5 (0.197) 5.6 (0.220) 0.685 (0.027)
1 (0.039) 1.5 (0.059) 1 (0.039) 0.585 (0.023)
3 (0.118) 3.5 (0.138) 3 (0.118) 5 (0.197) 5.6 (0.220) 5 (0.197) 0.685 (0.027)
1 (0.039) 1.5 (0.059) 1 (0.039) 0.76 (0.030)
3 (0.118) 3.5 (0.138) 3 (0.118) 5 (0.197) 5.6 (0.220) 5 (0.197) 0.86 (0.034)
1 (0.039) 1.5 (0.059) 1 (0.038) 0.76 (0.030)
3 (0.118) 3.5 (0.138) 1 (0.118) 5 (0.197) 5.6 (0.220) 5 (0.197) 0.86 (0.034)
NA (NA) NA (NA)
NA (NA) NA (NA)
0.76 (0.030)
5 (0.197) 5.6 (0.220) 5 (0.197) 0.86 (0.034)
E
V8ZAV56ZA V68ZAV100ZA V120ZAV180ZA V205ZAV750ZA
Ob
All
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.
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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 SYMBOL A LTRIM MIN 2.41 (0.095) MAX 13.0 (0.512) 4.69 (0.185) MIN 2.41 (0.095) 7mm MAX 15 (0.591) 4.69 (0.185) MIN 2.41 (0.095) 10mm MAX 19.5 (0.768) 4.69 (0.185) MIN 2.41 (0.095) 14mm MAX 22.5 (0.886) 4.69 (0.185) MIN 2.41 (0.095) 20mm MAX 29.0 (1.142) 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:
STANDARD CATALOG MODEL V18ZA3
* For 10/1mm lead spacing on 20mm diameter models only; append standard model numbers by adding "X10". Example:
STANDARD CATALOG MODEL V18ZA40
ORDER AS: V18ZC3
ORDER AS: V18ZA40X10
* For crimped leads without trimming and any variations to the above, contact Littelfuse.
Ordering Information
V XXX ZA XX
VARISTOR RELATIVE ENERGY INDICATOR (One or Two Digits) SERIES DESIGNATOR/ LEAD STYLE DESIGNATOR ZC = Crimped and Clipped ZS = Straight ZT = Crimped ZU = Under Crimped
VARISTOR NOMINAL VOLTAGE (VNOM) (One, Two or Three Digits)
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