SMD disk varistors (CU varistors)
Automotive series
7.5
Adhesive application
Thin or insufficient adhesive causes chips to loosen or become disconnected during curing.
Low viscosity of the adhesive causes chips to slip after mounting. It is advised to consult the
manufacturer of the adhesive on proper usage and amounts of adhesive to use.
7.6
Selection of flux
Used flux should have less than or equal to 0.1 wt % of halogenated content, since flux residue
after soldering could lead to corrosion of the termination and/or increased leakage current on the
surface of the component. Strong acidic flux must not be used. The amount of flux applied should
be carefully controlled, since an excess may generate flux gas, which in turn is detrimental to sol-
derability.
7.7
Storage of CTVSs
Solderability is guaranteed for one year from date of delivery for multilayer varistors, CeraDiodes
and ESD/EMI filters (half a year for chips with AgPd and AgPt terminations) and two years for
SHCV and CU components, provided that components are stored in their original packages.
Storage temperature:
Relative humidity:
25 ° C to +45 ° C
≤ 75% annual average, ≤ 95% on 30 days a year
The solderability of the external electrodes may deteriorate if SMDs and leaded components are
stored where they are exposed to high humidity, dust or harmful gas (hydrogen chloride, sulfurous
acid gas or hydrogen sulfide).
Do not store SMDs and leaded components where they are exposed to heat or direct sunlight.
Otherwise the packing material may be deformed or SMDs/ leaded components may stick togeth-
er, causing problems during mounting.
After opening the factory seals, such as polyvinyl-sealed packages, it is recommended to use the
SMDs or leaded components as soon as possible.
7.8
Placement of components on circuit board
Especially in the case of dual-wave soldering, it is of advantage to place the components on the
board before soldering in that way that their two terminals do not enter the solder bath at different
times.
Ideally, both terminals should be wetted simultaneously.
7.9
Soldering cautions
An excessively long soldering time or high soldering temperature results in leaching of the outer
electrodes, causing poor adhesion and a change of electrical properties of the varistor due to
the loss of contact between electrodes and termination.
Wave soldering must not be applied for MLVs designated for reflow soldering only.
Keep the recommended down-cooling rate.
Please read Cautions and warnings and
Important notes at the end of this document.
Page 23 of 30
相关PDF资料
CU3225K250G2K1 VARISTOR STD 250VRMS 3225 SMD
CV10-RP-M-0 CONN JACK STR COAXIAL SMD
CVM50XM MEMBER MOD PIC12C508/PIC12C509
CVM67XM MEMBER MODULE PIC12C671/672
CVM77XM MEMBER MODULE PIC16C773/774
CWA-BASIC-R SOFTWARE SUPPORT ANNUAL CW BASIC
CWS-68K-FLT CODEWARRIOR SW/SPT CW 68K FLO
CX2-B0-14-620-22A-06C CIRCUIT BREAKER
相关代理商/技术参数
CU3225K17G2 制造商:EPCOS 制造商全称:EPCOS 功能描述:Ceramic transient voltage suppressors SMD disk varistors standard series
CU3225K17G2K1 功能描述:VARISTOR STD 17VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:250 系列:- 变阻器电压:750V 电流 - 浪涌:1.2kA 电路数:1 最大交流电压:460VAC 最大直流电压:615VDC 能量:63J 封装/外壳:圆盘 9mm 其它名称:2322 593 54616232259354616BC1419VDRS07H460BSC
CU3225K20G2 功能描述:VARISTOR STD 20VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:400 系列:LU 变阻器电压:540V 电流 - 浪涌:6.5kA 电路数:1 最大交流电压:320VAC 最大直流电压:420VDC 能量:150J 封装/外壳:圆盘 20mm
CU3225K230G2 功能描述:VARISTOR STD 230VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:400 系列:LU 变阻器电压:540V 电流 - 浪涌:6.5kA 电路数:1 最大交流电压:320VAC 最大直流电压:420VDC 能量:150J 封装/外壳:圆盘 20mm
CU3225K250G2 功能描述:VARISTOR STD 250VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 产品目录绘图:MOV-14DxxxK_20mm Height Series Front MOV-(07,10,14,20)D_4.8mm Thickness Series Side 标准包装:1,000 系列:- 变阻器电压:360V 电流 - 浪涌:4.5kA 电路数:1 最大交流电压:230VAC 最大直流电压:300VDC 能量:93J 封装/外壳:圆盘 14mm
CU3225K250G2K1 功能描述:VARISTOR STD 250VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:250 系列:- 变阻器电压:750V 电流 - 浪涌:1.2kA 电路数:1 最大交流电压:460VAC 最大直流电压:615VDC 能量:63J 封装/外壳:圆盘 9mm 其它名称:2322 593 54616232259354616BC1419VDRS07H460BSC
CU3225K25G2 功能描述:VARISTOR STD 25VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:400 系列:LU 变阻器电压:540V 电流 - 浪涌:6.5kA 电路数:1 最大交流电压:320VAC 最大直流电压:420VDC 能量:150J 封装/外壳:圆盘 20mm
CU3225K275G2 功能描述:VARISTOR STD 275VRMS 3225 SMD RoHS:是 类别:过电压,电流,温度装置 >> TVS - 变阻器,MOV 系列:CU 标准包装:3,000 系列:StandarD 变阻器电压:18V 电流 - 浪涌:1kA 电路数:1 最大交流电压:11VAC 最大直流电压:14VDC 能量:3.2J 封装/外壳:圆盘 14mm 其它名称:B72214S 110K151B72214S0110K151B72214S110K151