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SCBQR ZnO !"#$T4#DÎV9
2 YZ[>
z: 3jW。ÏÐ , ; ZnO !"#$0¡
gò, gh#D 1000pF z , CZÔ#<Û¢Ó]£
2.1 %&'(
;¤DOP, á12[*ÿD0{ú+。ãÿD°
!"#$(Varistor) 4;xvwR0)*+$
3vÔ#<¢Ó],ZnO !"#$z*¥¦0]^2
,(ZenerDiodes), 3xy'Ç0Õ., 9z:¯5
¨, ÁZ$ì0ÇD, ѧ¨v#D°0²¨/\,
6{、 |Åy0RP!¿。!"#$0#! #H}ÿ
[11] E SCB*+,7¶#<¢Ó/\0¿p, è#<=
~ 1sW。ZnO ! " # $ y z ZnO ?
>:。
(, Xô³ùib.0ØV¢/#{
§L。{ú+#!M,ZnO !"#$0
v
#$OP;ã#D°#"78È#!], ³
d
a?Z#$OP, ÇÈ ZnO !"#$0#H
¡, 78È#!zE##H0ë ZnO !"#$
sÑH, wèÈ#!0ß>:;ã78È#!
gT,ZnO !"#$JKL?v#$OP。
= 3 !"#$F SCBQR4#DÎV
Fig.3 EquivalentmodelofvaristorinparallelwithSCBchip
Befs:©,ï:<= > Ü, 6 È ª ?:
6 SCB:«i«¬®C<=> , :¯¾
°¯±», ±»£ï:²³zß>±»¯, ±TC
´µ¶·¸¹º(LTNR)。ZnO !"#$ÜC
= 1 !"#$#! #H}ÿ <=>»G, x$Ѽ:'#½ F x ¾ S ÿ _ 8, F
Fig.1 Voltagecurrentcharacteristiccurvesofvaristor SCBÁQRgò。efSiN#$zß¿©,
±»À。
2.2 YZ\0
ef:© , Á : ú c 0 U V SCB (Typical
SCB*+, ± ·
0 L # 0 ñ / : 0
SCB,TSCB) F¶#<120Z[*/\ SCB
SCB,SCBY<=>Ü~ 2sW, 2a
(Low firingrequiredenergySCB,LSCB) [12] ,TSCB
·ä
SCB0gòW¼, )“H”
WX? 100μ m (L)×400μ m (W)×2μ m (T),
V。CFU^, :·ä0
LSCBWX? 20μ m (L)×100μ m (W)×2μ m (T)。
19
3
, ä 4 ? 7×10 v e { /cm , # $ ?
TSCB ú : - [ I J K L 47μ F22V,LSCB
1.0Ω , <=Ü, ~ 2bsW。
ú:-[IJKL? 22μ F9V, g»ÃÄ[11]
!"#$0Á:
Å»pq#!C 10VÆÇ, ÈÜ
WX/ÉÊÜè<=>»G0
。
j1 sW?Á:0!"#$_`ËÌ, ÏÐpq
] 1 ZnO !"#$ËÌ
Table1 ParametersofZnO varistor
a.SCBchip b.ceramicplug breakdownactual
type size/mm voltage breakdown
packagestructure
/V voltage/V
= 2 &'()Y<=>Ü SFI0603ML080CLF 1.60(L)×0.80(W)×0.80(T) 8 8.7
Fig.2 Schematic diagram ofSCB chip and ceramic plug SFI0603ML0120CLF 12 12.2
packagestructure
ChineseJournalofEnergeticMaterials,Vol.23,No.8,2015(781-786) !"#$ www.energeticmaterials.org.cn