电视机 色环电容 轴向独石电容

检验项目

item

检验标准

test standard

npo(n)

cog（cg）

x7r(b)

z5u(e)

y5v(y、f)

电容量(c)

capacitance

在相应的误差

范围内

in the tolerance

在相应的误差

范围内

in the tolerance

在相应的误差

范围内

in the tolerance

在相应的误差

范围内

in the tolerance

损耗角正切(df)

dissipation

factor

cr≥50pf

df≤0.15%

cr<50pf

df≤1.5[(150/cr)+7] ×10-4

≤3.5%

≤5%

≤3.5%(150000pf以下)

≤10%（220000-470000pf）

≤15%（480000-1000000pf）

绝缘电阻(ir)

insulation

resistance

c≤ 10nf

r>10000 mω

c> 10nf

r．c> 100s

c≤ 25nf

r>4000 mω

c> 25nf

r．c> 100s

c≤ 25nf

r>4000 mω

c> 25nf

r．c> 100s

c≤ 25nf

r>4000 mω

c> 25nf

r．c> 100s

耐电压

dielectric

withstanding

voltage

2．5倍额定电压

2．5×rated voltage

2．5倍额定电压

2．5×rated voltage

2．5倍额定电压

2．5×rated voltage

2．5倍额定电压

2．5×rated voltage

测试条件

test condition

测试频率

test frequency

100khz

(c>1000pf,1khz)

1khz

1khz

1khz

测试电压

test voltage

1±0．2vdc

1±0．2vdc

0．3±0．2vdc

0．3±0．2vdc

绝缘电阻测试电压

test voltage of ir

额定电压

rated voltage

额定电压

rated voltage

额定电压

rated voltage

额定电压

rated voltage

环境温度

temperature

18℃～25℃

18℃～25℃

18℃～25℃

18℃～25℃

环境湿度

humidity

< 75%

< 75%

< 75%

< 75%

温度系数

temperature

coefficient

0±30ppm/℃

-55℃to +125℃

±15%

-55℃to +125℃

+22% to–56%

+10℃to +85℃

+30% to-80%

-25℃to +85℃

项目

item

检验标准

test specifications

检验方法

test methods

可焊性

solderablity

引线表面均匀沾锡,上锡面积不小于总面积的75%。

lead wire shall be soldered with uniformly coated on the axial or radial direction over 3/4 of the circumferential direction.

将电容器引线浸入含25%酒精（或异丙醇）的松香溶液后浸入焊接槽温度为235±5℃的焊锡中2±0.5秒，浸入深度距离电容体2.5～3.0mm。

the lead wire of a capacitor shall be dipped into a 25% methanol solution of rosin and then into molten solder of 235±5℃ for 2±0.5 seconds ,in both cases the depth of dipping is up to about 2.5 to 3.0 mm from the root of lead wires.

耐焊性

resistance

to soldering

heat

外观

appearance

无损伤

no marked defect

焊锡温度265±5℃，时间5±0.5秒，插入深度距离电容体2.5～3.0mm，插入速度1秒，试验后2～24小时测量。

the lead wire shall be immersed into the melted solder of 265±5℃，up to about 2.5 to 3.0mm from the main body for 5±0.5 sec and the specified items shall be measured after leaving for 2 to 24 hours.

容量变化δc/c

capacitance change

npo:≤5%

x7r:≤-5～+10%

y5v:≤-10～+20%

介电强度（引线间）

dielectric strength（between lead wires）

不失效

no failure

耐久性

list test

外观

appearance

无外观损伤

no marked defect

条件

condition

npo

x7r

y5v

z5u

容量变化δc/c

capacitance change

npo：≤2%

x7r：≤20%

y5v：≤30%

温度

temperature

+125℃

+85℃

d．f.

npo：≤0.3%

x7r：≤5%

y5v：≤7%

时间

time

t=1000h

r．c>25s

电压

voltage

v=1.5vr

恢复时间

recovery time

24±1h

引出端强度

strength

of lead

temination

拉力

pull

引线不断

电容器不破损

lead wire shall not cut off. capacitor shall not be broken.

如图：固定电容器并加力，引线直径0.5mm以上加力3kg，保持5秒

as a figure, fix the body of capacitor, apply a tensile weight gradually to each lead in the radial direction of capacitor up to 2 okgf, and keep it for l to 5 sec.

g

折弯

bending

引线负荷0.5kg向一方向折弯900后恢复原位，再向反方向折弯900恢复原状为一次，共3次。

each lead wire shall be subjected to 0.5kgf weight and then a 900bend at the point of egress, in one direction, return to original position and then a 900bend in the opposite direetion at the rate of one bend.