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DNR7D220 Schematic ( Datenblatt PDF ) - Millennium Components

Teilenummer DNR7D220
Beschreibung DNR VARISTORS
Hersteller Millennium Components
Logo Millennium Components Logo 

Gesamt 10 Seiten
		
DNR7D220 Datasheet, Funktion
Millennium Components Corp.
www.lotron.com.tw
6F-3, 169, Yang Ming Road, Kaohsiung Taiwan, R.O.C.
Tel: 886-7-3806196 Fax : 886-7-3807075
DNR VARISTORS
Description
DON’s DNRs are ZINC OXIDE non-linear resistors whose resistance changes as a
function of the applied voltage. The DNR provides a highly reliable and economic way to protect
against repeated high voltage transient and surges such as those produced by induced lightning
surges, switching surges and noise spike.
The DNR utilizes a ceramic element composed of Zinc Oxide and several kinds of metal
oxide additives that have been sintered at relatively highly temperature. Ohmic electrodes are
connected to each end of element by firing.
FEATURES:
Broad products range
Varistor Voltage : 18 V to 1.8 KV
Fast response to the rapidly rising surge voltage (m
Excellent non-linearity voltage
Symmetric V-1 characteristics
Great withstanding surge current
No follow-on current
Long Life
Sec.)
SPECIFICATIONS
MODEL
NO.
VARISTOR VOLTAGE
(v)
MIN MAX
MAX.
CONTINUOUS
VOLTAGE
VA
Crms
VDC
MAX.
CLAMPING
VOLTAGE
Vc (V) Ip (A)
PEAK
MAX.
TYPICAL
ALLOWABLE
CURRENT
ENERGY
CAPACITANCE
POWER
(a)
(J) (Referance)
(W) 8/20
2m Sec.
@ 1 KHz (PF)
Sec.x2
DNR5D180 18 16 20 11 14 40 1 0.01 0.3 50
1600
DNR5D220 22 20 24 14 18 48 1 0.01 0.4 50
1300
DNR5D270 27 24 30 17 22 60 1 0.01 0.5 50
1050
DNR5D330 33 30 36 20 26 73 1 0.01 0.6 50
900
DNR5D390 39 35 43 25 31 86 1 0.01 0.8 50
500
DNR5D470 47 42 52 30 38 104 1 0.01 1.0 50
450
DNR5D560 56 50 62 35 45 123 1 0.01 1.0 50
400
DNR5D680 68 61 75 40 56 150 1 0.01 1.2 50
350
DNR5D820 82 74 90 50 65 145 5 0.1 1.7 200
250
DNR5D101 100 90 110
60
85 175 5
0.1
2.0 200
200
DNR5D121 120 108 132
75
100 210
5
0.1
2.5 200
170
DNR5D151 150 135 165
90
125 260
5
0.1
3.0 200
140






DNR7D220 Datasheet, Funktion
CHARACTERISTICS
DNR has the forward-reverse symmetrical electrical characteristics shown in the Fig 1.
The curve is plotted for a wider range of current than that normally given in data sheet to show three
regions in Fig 2.
*Pre –breakdown region
*Normal operating region
*Upturn region
2-2 Voltage temperature coefficient
The voltage temperature coefficient (TC) is generally calculated by measuring VIcm A at 20 C and
V2cmA at 70 C.
2-3 Power derating
2-4 Surge test wave form according to IEC60 – 2, section 6.

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