! Note ? Please read rating and ! CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
? This catalog has only typical speci?cations. Therefore, please approve our product speci?cations or transact the approval sheet for product speci?cations before ordering.
! Caution
Continued from the preceding page.
4-2. Flow Soldering
C02E.pdf
Sep.25,2013
1. Do not apply flow soldering to chips not listed in table 2.
[Standard Conditions for Flow Soldering]
Table 2
Temperature ( D )
Soldering
Soldering
Part Number
GR3/GRM Series 18/21/31 sizes
Temperature Differential
Peak
Temperature
Δ T
Gradual
Cooling
GQM Series 18/21 sizes
Preheating
LLL Series 21/31 sizes
GRJ Series Rated Voltage 250VDC
Δ T V 150°C
Peak
Temperature
or more 18/21/31 sizes
2. When sudden heat is applied to the components, the
Preheating
Time
mechanical strength of the components will decrease
30-90 seconds
5 seconds max.
because a sudden temperature change causes
deformation inside the components. In order to prevent
mechanical damage to the components, preheating is
required for both of the components and the PCB.
Preheating conditions are shown in table 2. It is required
to keep the temperature differential between the solder
and the components surface ( Δ T) as low as possible.
3. Excessively long soldering time or high soldering
[Allowable Flow Soldering Temperature and Time]
280
270
260
250
240
230
temperature can result in leaching of the outer electrodes,
220
0
10
20
30 40
causing poor adhesion or a reduction in capacitance
value due to loss of contact between the electrodes and
end termination.
4. When components are immersed in solvent after
mounting, be sure to maintain the temperature differential
( Δ T) between the component and solvent within the range
shown in the table 2.
Recommended Conditions
Soldering Time (sec.)
In the case of repeated soldering, the accumulated
soldering time must be within the range shown above.
Pb-Sn Solder
Lead Free Solder
Preheating Peak Temperature
Soldering Peak Temperature
Atmosphere
90 to 110°C
240 to 250°C
Air
100 to 120°C
250 to 260°C
N 2
Pb-Sn Solder: Sn-37Pb
Lead Free Solder: Sn-3.0Ag-0.5Cu
5. Optimum Solder Amount for Flow Soldering
5-1. The top of the solder fillet should be lower than the
thickness of the components. If the solder amount is
excessive, the risk of cracking is higher during board
Up to Chip Thickness
bending or any other stressful condition.
Adhesive
in section
Continued on the following page.
146
相关PDF资料
H-22-3A DIAL SCALE 15 TURN CONCENTRIC
H-23-6M DIAL SCALE 15 TURN CONCENTRIC
H-26S SIDE BRACKET FOR MODEL 3250/3252
H-46-6A COUNTING DIAL 0-20 TURNS
H-83P RETRO FIT PANEL MNT HOLDER
H472K47X7RL6VJ5R CAP CER 4700PF 500V 10% RADIAL
HA55L-4523500LF INDUCTOR POWER 50UH
HB01U05S05YC CONV DC/DC 5V 200MA UNREGUL
相关代理商/技术参数
GRM43DR61E106MA12L 制造商:Murata Manufacturing Co Ltd 功能描述: 制造商:Murata Manufacturing Co Ltd 功能描述:CAP,CERAMIC CHIP,10UF,25VDC,20%,SMD,1812-CASE
GRM43DR71H155KA01L 功能描述:CAP CER 1.5UF 50V 10% X7R 1812 RoHS:是 类别:电容器 >> 陶瓷 系列:GRM 标准包装:4,000 系列:- 电容:1000pF 电压 - 额定:50V 容差:±10% 温度系数:X7R 安装类型:表面贴装,MLCC 工作温度:-55°C ~ 125°C 应用:自动 额定值:AEC-Q200 封装/外壳:0805(2012 公制) 尺寸/尺寸:0.079" L x 0.047" W(2.00mm x 1.20mm) 高度 - 座高(最大):- 厚度(最大):- 引线间隔:- 特点:- 包装:带卷 (TR) 引线型:-
GRM43DR71H155MA01L 功能描述:CAP CER 1.5UF 50V 20% X7R 1812 RoHS:是 类别:电容器 >> 陶瓷 系列:GRM 标准包装:4,000 系列:- 电容:1000pF 电压 - 额定:50V 容差:±10% 温度系数:X7R 安装类型:表面贴装,MLCC 工作温度:-55°C ~ 125°C 应用:自动 额定值:AEC-Q200 封装/外壳:0805(2012 公制) 尺寸/尺寸:0.079" L x 0.047" W(2.00mm x 1.20mm) 高度 - 座高(最大):- 厚度(最大):- 引线间隔:- 特点:- 包装:带卷 (TR) 引线型:-
GRM43DR72A155KA01L 功能描述:多层陶瓷电容器MLCC - SMD/SMT 1812 1.5uF 100volts X7R 10% RoHS:否 制造商:American Technical Ceramics (ATC) 电容:10 pF 容差:1 % 电压额定值:250 V 温度系数/代码:C0G (NP0) 外壳代码 - in:0505 外壳代码 - mm:1414 工作温度范围:- 55 C to + 125 C 产品:Low ESR MLCCs 封装:Reel
GRM43DR72A155MA01L 功能描述:多层陶瓷电容器MLCC - SMD/SMT 1812 1.5uF 100volts X7R 20% RoHS:否 制造商:American Technical Ceramics (ATC) 电容:10 pF 容差:1 % 电压额定值:250 V 温度系数/代码:C0G (NP0) 外壳代码 - in:0505 外壳代码 - mm:1414 工作温度范围:- 55 C to + 125 C 产品:Low ESR MLCCs 封装:Reel
GRM43DR72A334KW01L 制造商:Murata Manufacturing Co Ltd 功能描述:
GRM43DR72A474KA01L 功能描述:多层陶瓷电容器MLCC - SMD/SMT 1812 0.47uF 100volts 10% RoHS:否 制造商:American Technical Ceramics (ATC) 电容:10 pF 容差:1 % 电压额定值:250 V 温度系数/代码:C0G (NP0) 外壳代码 - in:0505 外壳代码 - mm:1414 工作温度范围:- 55 C to + 125 C 产品:Low ESR MLCCs 封装:Reel
GRM43DR72A474KW01L 制造商:Murata Manufacturing Co Ltd 功能描述: