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Details, datasheet, quote on part number:V250PA40A
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Datasheet text preview:
PA Series
Data Sheet July 1999 File Number 2192.5
Base Mount Metal-Oxide Varistors
The PA Series of transient surge suppressors are metaloxide varistors (MOVs) featuring a rigid base mount package construction, and are useful in applications which are subject to vibration. These UL and CSA recognized varistors are available in a wide range of operating voltages, from 130V to 660V VM(AC)RMS. The base-mount package has a quick-connect tab terminal that provides a fast, secure lead attach. The mounting base forms the second electrical connection, usually chassis ground. Meeting rigid NEMA standards, PA series varistors have a creep and strike distance capability that minimizes breakdown along the package surface. See PA Series Device Ratings and Specifications table for part number and brand information.
Features
· Recognized as "Transient Voltage Surge Suppressors", UL File #E75961 to Std. 1449, Second Edition · Recognized as "Transient Voltage Surge Suppressors", CSA File #LR91788 to Std. C22.2 No. 1-M1981 · Wide Operating Voltage Range VM(AC)RMS. . . . . . . . . . . . . . . . . . . . . . . . . . 130V to 660V · Creep and Strike Distance Capability Meets Rigid NEMA Standards · Base Mount Construction Forms One Electrical Connection · Quick Connect Tab Terminal · No Derating Up to 85oC Ambient
[ /Title (PA Series) /Subject (Base Mount MetalOxide Varistors) /Autho r () /Keywords (Littelfuse, Inc., Suppression Products, TVS, Transient Suppression, Protection, AC Line, AC Panel, Lightning Protec-
Packaging
PA SERIES
4-93
1-800-999-9445 or 1-847-824-1188 | Copyright
© Littelfuse, Inc. 1999
PA Series
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart PA SERIES 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 For 10/1000µs Current Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature Coefficient (V) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . UNITS
130 to 660 175 to 850
V V
6500 70 to 250 -55 to 85 -55 to 125 <0.01
A J
oC 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
Series PA Varistors are listed under UL file #E75961 and under CSA file #LR91788, as a UL recognized component.
MAXIMUM RATINGS (85oC) CONTINUOUS TRANSIENT ENERGY (10/1000µs) WTM (J) 70 70 80 80 130 130 140 140 160 160 170 170 180 180 190 190 220 220 250 250 PEAK CURRENT (8/20µs) ITM (A) 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 6500 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MIN (V) 184 184 212 212 354 354 389 389 462 462 610 610 670 670 735 735 805 805 940 940 VN(DC) (V) 200 200 240 240 390 390 430 430 510 510 680 680 750 750 820 820 910 910 1050 1050 MAX (V) 243 220 284 243 453 413 494 453 565 540 790 690 860 790 963 860 1050 960 1210 1100 MAX CLAMPING VOLT VC AT TEST CURRENT (8/20µs) VC (V) 360 325 420 360 675 620 740 680 850 800 1160 1050 1280 1160 1410 1280 1560 1410 1820 1650 IP (A) 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 TYPICAL CAPACITANCE f = 1MHz (pF) 1900 1900 1600 1600 1000 1000 900 900 750 750 600 600 550 550 500 500 450 450 400 400 SPECIFICATIONS (25oC)
VRMS PART NUMBER AND DEVICE BRANDING V130PA20A V130PA20C V150PA20A V150PA20C V250PA40A V250PA40C V275PA40A V275PA40C V320PA40A V320PA40C V420PA40A V420PA40C V480PA80A V480PA80C V510PA80A V510PA80C V575PA80A V575PA80C V660PA100A V660PA100C VM(AC) (V) 130 130 150 150 250 250 275 275 320 320 420 420 480 480 510 510 575 575 660 660
VDC VM(DC) (V) 175 175 200 200 330 330 369 369 420 420 560 560 640 640 675 675 730 730 850 850
NOTE: Average power dissipation of transients not to exceed 1W.
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PA 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 PERCENT OF RATED VALUE 90 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 8/20µs Current Waveform: 8µs = T1 = Virtual Front Time 20µs = T2 = Virtual Time to Half Value
10 O1 T T1 T2 TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
V320PA40A 6,000 5,000 4,000 MAXIMUM PEAK VOLTS (V) 3,000 2,000 MAXIMUM CLAMPING VOLTAGE V660PA80A "A" SUFFIX V575PA80A 130 TO 660VM(AC) RATING V510PA80A oC TO 85oC TA = -55 V480PA80A V420PA80A 6,000 5,000 4,000 MAXIMUM PEAK VOLTS (V) 3,000 2,000 MAXIMUM CLAMPING VOLTAGE "C" SUFFIX 130 TO 660VM(AC) RATING TA = -55oC TO 85oC V660PA100C V575PA80C V510PA80C V480PA80C V420PA80C
1,000 900 800 V320PA40A 700 600 500 400 V150PA20A 300 V130PA20A 200 -3 10-2 10
V275PA40A V250PA40A
1,000 900 800 700 600 500 400 300
V320PA40C V275PA40C V250PA40C V150PA20C
10-1
100 101 102 PEAK AMPERES (A)
103
104
V130PA20C 200 10-2 10-3
10-1
100 101 102 PEAK AMPERES (A)
103
104
FIGURE 3. CLAMPING VOLTAGE FOR V130PA20A V660PA100A
FIGURE 4. CLAMPING VOLTAGE FOR V130PA20C V660PA100C
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