PRECAUTIONS
CAPACITORS
4
115
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Please read the "Notice for TAIYO YUDEN products" before using this catalog.
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4. Soldering Selection of Flux
1. Since flux may have a significant effect on the performance
of capacitors, it is necessary to verify the following condi-
tions prior to use;
(1)Flux used should be with less than or equal to 0.1 wt%
(equivelent to chroline) of halogenated content. Flux
having a strong acidity content should not be applied.
(2)When soldering capacitors on the board, the amount of
flux applied should be controlled at the optimum level.
(3)When using water-soluble flux, special care should be
taken to properly clean the boards.
Soldering
Temperature, time, amount of solder, etc. are specified in ac-
cordance with the following recommended conditions.
Sn-Zn solder paste can affect MLCC reliability performance.
Please contact us prior to usage.
1-1. When too much halogenated substance (Chlorine, etc.) content is used to activate
the flux, or highly acidic flux is used, an excessive amount of residue after soldering
may lead to corrosion of the terminal electrodes or degradation of insulation resis-
tance on the surface of the capacitors.
1-2. Flux is used to increase solderability in flow soldering, but if too much is applied, a
large amount of flux gas may be emitted and may detrimentally affect solderability. To
minimize the amount of flux applied, it is recommended to use a flux-bubbling system.
1-3. Since the residue of water-soluble flux is easily dissolved by water content in the
air, the residue on the surface of capacitors in high humidity conditions may cause a
degradation of insulation resistance and therefore affect the reliability of the compo-
nents. The cleaning methods and the capability of the machines used should also be
considered carefully when selecting water-soluble flux.
1-1. Preheating when soldering
Heating: Ceramic chip components should be preheated to within 100 to 130℃ of the
soldering.
Cooling: The temperature difference between the components and cleaning process
should not be greater than 100℃.
Ceramic chip capacitors are susceptible to thermal shock when exposed to rapid or concen-
trated heating or rapid cooling. Therefore, the soldering process must be conducted with
great care so as to prevent malfunction of the components due to excessive thermal shock.
Technical considerationsStages Precautions
Precautions on the use of Multilayer Ceramic Capacitors
Recommended conditions for soldering
[Reflow soldering]
Temperature profile
2. Because excessive dwell times can detrimentally affect solderability, soldering du-
ration should be kept as close to recommended times as possible.
[Wave soldering]
Temperature profile
Caution
1. The ideal condition is to have solder mass (fillet) controlled to 1/2 to 1/3 of the
thickness of the capacitor, as shown below:
Caution
1. Make sure the capacitors are preheated sufficiently.
2. The temperature difference between the capacitor and melted solder should not be
greater than 100 to 130℃
3. Cooling after soldering should be as gradual as possible.
4. Wave soldering must not be applied to the capacitors designated as for reflow sol-
dering only.
ピーク260℃以下
10秒迄
ピーク260℃以下
10秒迄
予熱150℃
60秒以上
350℃以下
3秒迄
120秒以上
60秒以上
予熱150℃
本加熱230℃以上
40秒迄
※チップ
とはんだ温度との差が100〜130℃以下になるよ
うに十分予熱を行ってください。
※回数は2
回迄の保証となります。
※チップとはんだ温度との差が100〜130℃以下になるよ
うに十分予熱を行ってください。
※回数は1
回迄の保証となります。
※リフロー仕様アイテムは除きます。
(※⊿T≦190℃(3216タ
イプ以下)、⊿T≦130℃(3225以上)。)
※はんだコテは20Wで先端が1φ以下のものを推奨致します。
※コテ先がチップに直接触れないようにご留意下さい。
※回数は1回迄の保証となります。
注:上記温度プロファイルは最大許容条件であり、
常にこれを推奨するものではございません。
温度(℃)
300
200
100
0
温度(℃)
300
200
100
0
温度(℃)
400
300
200
100
0
徐冷
徐冷
徐冷
Peak 260℃ max
10 sec max
Peak 260℃ max
10 sec max
※Ceramic chip components should be preheated to
within 100 to 130℃ of the soldering.
※Assured to be reflow soldering for 2 times.
※Ceramic chip components should be preheated to
within 100 to 130℃ of the soldering.
※Assured to be wave soldering for 1 time.
※Except for reflow soldering type.
(※⊿T
≦190℃ (3216Type max), ⊿T≦130℃ (3225
Type min))
※It is recommended to use 20W soldering iron and
the tip is 1φ or less.
※The soldering iron should not directly touch the
components.
※Assured to be soldering iron for 1 time.
Note: The above profiles are the maximum allowable
soldering condition, therefore these profiles are
not always recommended.
Temperature(℃)
300
200
100
0
Temperature(℃)
300
200
100
0
Temperature(℃)
400
300
200
100
0
Preheating
150℃
60 sec min
Gradually
cooling
Gradually
cooling
Gradually
cooling
Heating above 230℃
40 sec max
Preheating
150℃
120 sec min
350℃ max
3 sec max
60 sec min
⊿T
⊿T
(Pb free soldering)
(Pb free soldering)
(Pb free soldering)
ピーク260℃以下
10秒迄
ピーク260℃以下
10秒迄
予熱150℃
60秒以上
350℃以下
3秒迄
120秒以上
60秒以上
予熱150℃
本加熱230℃以上
40秒迄
※チップ
とはんだ温度との差が100〜130℃以下になるよ
うに十分予熱を行ってください。
※回数は2
回迄の保証となります。
※チップとはんだ温度との差が100〜130℃以下になるよ
うに十分予熱を行ってください。
※回数は1
回迄の保証となります。
※リフロー仕様アイテムは除きます。
(※⊿T≦190℃(3216タ
イプ以下)、⊿T≦130℃(3225以上)。)
※はんだコテは20Wで先端が1φ以下のものを推奨致します。
※コテ先がチップに直接触れないようにご留意下さい。
※回数は1回迄の保証となります。
注:上記温度プロファイルは最大許容条件であり、
常にこれを推奨するものではございません。
温度(℃)
300
200
100
0
温度(℃)
300
200
100
0
温度(℃)
400
300
200
100
0
徐冷
徐冷
徐冷
Peak 260℃ max
10 sec max
Peak 260℃ max
10 sec max
※Ceramic chip components should be preheated to
within 100 to 130℃ of the soldering.
※Assured to be reflow soldering for 2 times.
※Ceramic chip components should be preheated to
within 100 to 130℃ of the soldering.
※Assured to be wave soldering for 1 time.
※Except for reflow soldering type.
(※⊿T
≦190℃ (3216Type max), ⊿T≦130℃ (3225
Type min))
※It is recommended to use 20W soldering iron and
the tip is 1φ or less.
※The soldering iron should not directly touch the
components.
※Assured to be soldering iron for 1 time.
Note: The above profiles are the maximum allowable
soldering condition, therefore these profiles are
not always recommended.
Temperature(℃)
300
200
100
0
Temperature(℃)
300
200
100
0
Temperature(℃)
400
300
200
100
0
Preheating
150℃
60 sec min
Gradually
cooling
Gradually
cooling
Gradually
cooling
Heating above 230℃
40 sec max
Preheating
150℃
120 sec min
350℃ max
3 sec max
60 sec min
⊿T
⊿T
(Pb free soldering)
(Pb free soldering)
(Pb free soldering)