Standard D Series 7mm Disc 07D271K 271 270V Zinc Oxide Metal Oxide
Varistor 175VAC 225VDC Voltage Dependent Resistor
Characteristics
High performance transient voltage suppression
Short response time to surge voltage
Low standby power dissipation
Excellent clamping characteristics
High performance withstanding surgecurrents
High reliability
UL, CSA, VDE and SEV recognized
Part Numbering
Part Number | Vac (V) | Vdc (V) | V1mA (A) | Ip (A) | Vc (V) | I(A) Standard | I(A) High Surge | (J) Standard | (J) High Surge | Rated power(W) | C@ 1KHz(pf) |
| 07D180K(J) | 11 | 14 | 18(15-21.6) | 2.5 | 36 | 250 | 500 | 0.9 | 2.0 | 0.02 | 2800 |
| 07D220K(J) | 14 | 18 | 22(19.5-26) | 2.5 | 43 | 250 | 500 | 1.1 | 2.4 | 0.02 | 2300 |
| 07D270K(J) | 17 | 22 | 27(24-31) | 2.5 | 53 | 250 | 500 | 1.4 | 3.0 | 0.02 | 1800 |
| 07D330K(J) | 20 | 26 | 33(29.5-36.5) | 2.5 | 65 | 250 | 500 | 1.7 | 3.5 | 0.02 | 1500 |
| 07D390K(J) | 25 | 31 | 39(35-43) | 2.5 | 77 | 250 | 500 | 2.1 | 4.0 | 0.02 | 1300 |
| 07D470K(J) | 30 | 38 | 47(42-52) | 2.5 | 93 | 250 | 500 | 2.5 | 5.0 | 0.02 | 1100 |
| 07D560K(J) | 35 | 45 | 56(50-62) | 2.5 | 110 | 250 | 500 | 3.1 | 6.0 | 0.02 | 890 |
| 07D680K(J) | 40 | 56 | 68(61-75) | 2.5 | 135 | 250 | 500 | 3.6 | 7.0 | 0.02 | 740 |
| 07820K(J) | 50 | 65 | 82(74-90) | 10 | 135 | 1200 | 1750 | 5.5 | 10 | 0.25 | 600 |
| 07D101K(J) | 60 | 85 | 100(90-110) | 10 | 165 | 1200 | 1750 | 6.5 | 12 | 0.25 | 500 |
| 07D121K(J) | 75 | 100 | 120(108-132) | 10 | 200 | 1200 | 1750 | 7.8 | 13 | 0.25 | 420 |
| 07D151K(J) | 95 | 125 | 150(135-165) | 10 | 250 | 1200 | 1750 | 9.7 | 13 | 0.25 | 330 |
| 07D181K(J) | 115 | 150 | 180(162-198) | 10 | 300 | 1200 | 1750 | 11.7 | 16 | 0.25 | 280 |
| 07D201K(J) | 130 | 170 | 200(180-220) | 10 | 340 | 1200 | 1750 | 13 | 17 | 0.25 | 250 |
| 07D221K(J) | 140 | 180 | 220(198-242) | 10 | 360 | 1200 | 1750 | 14 | 19 | 0.25 | 23007D |
| 07D241K(J) | 150 | 200 | 240(216-264) | 10 | 395 | 1200 | 1750 | 15 | 21 | 0.25 | 210 |
| 07D271K(J) | 175 | 225 | 270(243-297) | 10 | 455 | 1200 | 1750 | 18 | 24 | 0.25 | 185 |
| 07D301K(J) | 190 | 250 | 300(270-330) | 10 | 500 | 1200 | 1750 | 20 | 26 | 0.25 | 165 |
| 07D331K(J) | 210 | 275 | 330(297-363) | 10 | 550 | 1200 | 1750 | 23 | 28 | 0.25 | 150 |
| 07D361K(J) | 230 | 300 | 360(324-396) | 10 | 595 | 1200 | 1750 | 25 | 32 | 0.25 | 140 |
| 07D391K(J) | 250 | 320 | 390(351-429) | 10 | 650 | 1200 | 1750 | 25 | 35 | 0.25 | 130 |
| 07D431K(J) | 275 | 350 | 430(387-473) | 10 | 710 | 1200 | 1750 | 28 | 40 | 0.25 | 115 |
| 07D471K(J) | 300 | 385 | 470(423-517) | 10 | 775 | 1200 | 1750 | 30 | 42 | 0.25 | 105 |
| 07D511K(J) | 320 | 415 | 510(459-561) | 10 | 845 | 1200 | 1750 | 30 | 45 | 0.25 | 100 |
| 07D561K(J) | 350 | 460 | 560(504-616) | 10 | 925 | 1200 | 1750 | 30 | 49 | 0.25 | 90 |
| 07D621K(J) | 385 | 505 | 620(558-682) | 10 | 1025 | 1200 | 1750 | 33 | 55 | 0.25 | 80 |
| 07D681K(J) | 420 | 560 | 680(612-748) | 10 | 1120 | 1200 | 1750 | 33 | 60 | 0.25 | 75 |
| 07D751K(J) | 460 | 615 | 750(675-825) | 10 | 1240 | 1200 | 1750 | 67.2 | 65 | 0.25 | 70 |
| 07D781K(J) | 485 | 640 | 780(702-858) | 10 | 1290 | 1200 | 1750 | 67.2 | 65 | 0.25 | 70 |
| 07D821K(J) | 510 | 670 | 820(738-902) | 10 | 1355 | 1200 | 1750 | 67.2 | 70 | 0.25 | 60 |
Dimension (mm)
Dmax | 9 |
Hmax | 11 |
Lmin | 25 |
A±1 | 5 |
±0.02 | 0.6 |
Thickness Tmax.
|
180K--680K | 5.0 | 621K--681K | 7.0 |
820K--201K | 5.0 | 751K--821K | 7.5 |
221K--331K | 5.5 | | |
361K--471K | 6.0 | | |
511K--561K | 6.5 | |
Applications
Surge protection in:
consumer electronics
industrial electronics
communication electronics
measuring and controlling systems
electronic home appliances
Protection against surges induced by lighting striking incoming
power lines.
Suppression of surges caused by switching inductive loads such as
transformers, relays and coils. Protection of rectification diodes,
SCRs, power transistors, semiconductor devices, etc.
Definition of Varistor Terms
Rated RMS Voltage, Rated DC Voltage:
The maximum designated values of power system voltage that may be
applied continuously between the terminals of a device.
Varistor Voltage: Test characteristic that is used to classify
varistors by type. A test current of 1mA DC is typically used to
determine varistor voltage classification type. Varistor voltage
clamping characteristics can be defined at various test levels.
Rated Peak Single Pulse Transient Current: Maximum surge current,
8/20μs waveform which a varistor is rated to withstand for a single
surge.
Rated Single Pulse Transient Energy: Maximum allowable energy for a
single impulse (see specified waveforms).
Maximum Clamping Voltage: Measured peak voltage across the device
terminals when a current impulse of specified amplitude and
waveform is conducted through the varistor.
Typical Capacitance: Typical capacitance values are measured at a
test frequency of 1kHz. Capacitance values are only for reference
purpose only, not subject to outgoing inspection.
General Characteristics
Storage Temperature: －55℃ to ＋125℃
Operating Surface Temperature: 125℃
Operating Ambient Temperature: －55℃ to ＋85℃(without derating)
Maximum Voltage-Temperature Coefficient:＜－0.05﹪∕℃
Insulation Resistance: 1000 Mega-ohm minimum
Hi Pot (Leads To Case, 1 Min.) : 2500 VDC
Typical Response Time: ＜15 Nano-seconds
Epoxy Rating: 94V-0
Current∕Energy Derating (＞85℃ ): －2.5 ﹪∕℃ DC
Leakage Current: 200µA maximum (at rated DC working voltage )
Solder ability: MIL-STD-202F
Power Dissipation Ratings(P, in-watts): All definitions are
according to IEEE specifications C62.33.
Varistor Lead Cutting Offer
A: 4.0 ±1.0mm(Crimped lead cutting for 5D, 7D)
B: 3.0 ±1.0mm(Crimped lead cutting for all diameter size)
C: 4.5 ±1.5mm(Crimped lead cutting for 10D, 14D)
D: 6.5 ±1.0mm(Crimped lead cutting for all diameter size)
E: 4.0 ±1.0mm(Straight lead cutting for 5D, 7D, 10D, 14D, 20D)
F: 5.0 ±1.0mm(Crimped lead cutting for 10D, 14D)
J: 3.0 ±0.5mm K: 3.5 ±1.0mm
Peak Current Per Pulse Versus Pulse Duration
Energy Derating Versus Temperature
