SMD POWER INDUCTOR
◆可靠性测试方法
Reliability Test Method
序号
项目
要求
试验方法及备注
No.
Items
Requirements
Test Methods and Remarks
绝缘电阻
在电感器线圈和磁芯之间施加 100 V 直流电压保持 60s。
100 V DC between inductor coil and core for 60 seconds.
在 245±5℃熔融的焊锡(96.5Sn/3.0Ag/0.5Cu)中浸 5±1s。
1
2
≥100MΩ
Insulation Resistance
电极面 95%以上覆盖新的焊料。
可焊性
95% or more of electrode area Dip pads in flux and dip in solder pot (96.5Sn/3.0Ag/0.5Cu) at
Solderability
shall be coated by new solder.
外观无可见机械损伤;
245±5℃for (5±1) seconds.
耐焊接热
在 260±5℃熔融的焊锡(96.5Sn/3.0Ag/0.5Cu)中浸 10±1s。
Dip pads in flux and dip in solder pot
电感量变化率:±10%以内。
No visible mechanical damage.
Inductance change: Within ±10%
3
Resistance to
Soldering Heat
(96.5Sn/3.0Ag/0.5Cu) at 260±5℃for (10±1) seconds.
使用焊料将电感器焊接到试验板上,然后按箭头方向分别施加
10N 的力,保持时间 10±1s。
The inductor is welded to the test plate with solder, and then
applied 10 N force in the direction of arrow and kept for 10 ± 1s.
元件端子无松动、无脱落。
No looseness of shedding of
terminals.
端子强度
4
Terminal Strength
温度+85±2℃,时间 1000+02 4h,在室温下放置 2 小时后、48 小时内
测试。
外观无可见机械损伤;
耐高温
电感量变化率:±10%以内。
No visible mechanical damage.
5
6
High Temperature
Temperature 85±2℃, time 1000+02 4h,test within 48 hours after 2
Inductance change: Within ±10% hours of placement at room temperature.
外观无可见机械损伤;
温度-40±2℃,时间 1000+02 4h;在室温下放置 2 小时后、48 小时
耐低温
电感量变化率:±10%以内。
No visible mechanical damage.
内测试。
Low Temperature
Temperature -40 ℃± 2 ℃, time 1000+02 4h, test within 48 hours
Inductance change: Within ±10% after 2 hours of placement at room temperature.
(-40±3) ℃,时间(30±3) min ↔ (85±2) ℃/(30±3) min,转换时间
(2~3) min,循环 32 次;在室温下放置 2 小时后、48 小时内测试。
外观无可见机械损伤;
The test sample shall be placed at (-40±3)℃ and (85±2)℃ for
温度冲击
电感量变化率:±10%以内。
7
(30±3) min, different temperature conversion time is 2~3
No visible mechanical damage.
Thermal Shock
minutes. The temperature cycle shall be repeated 32 cycles.
Inductance change: Within ±10%
Test within 48 hours after 2 hours of placement at room
temperature.
电 感 量 变 化 率 Pc-b,Pc-d 不 超 过 在-40℃~+85℃的环境下测量电感量值,分别与 20℃环境下测
温度特性
±20%。
量的电感量进行比较。
Temperature
Characteristic
8
9
Inductance change
Within ±20%
P
c-b,Pc-d
:
Based on the inductance at 20℃ and Measured at the ambient
of -40℃~+85℃.
将电感器放置在于湿度(90~95)%RH,温度 60±2℃的环境中存放
1000+02 4H,在室温下放置 2 小时后、48 小时内测试。
The inductors were stored for 1000 + 240 h at humidity
(90~95)%RH, temperature 60±2℃, and tested within 48h after
2H at room temperature.
外观无可见机械损伤;
恒定湿热
电感量变化率:±10%以内。
Constant Damp Heat
No visible mechanical damage.
Inductance change: Within ±10%
8