mef (cl21) metallized polyester film capacitor (coating)
金属化聚酯薄膜电容器（含浸型）
★ feature 特点：
· non-inductive construction ·无感型结构
· self-healing · 自愈性
· high reliable and superior performance ·低频应用中具高可靠性及优良特点
in low frequency application
★application 用途：
· filter and noise suppression circuit · 滤波及噪音抑制回路
· pulse，logic and timing circuit ·脉冲、逻辑、定时回路
· dc-blocking,by-passing and signal coupling ·通讯设备中之直流减振，旁路及信号耦合
in general communication equipment
★specifications技术要求：
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dielectric
介质
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polyester film
聚酯薄膜
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electrodes
电极
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vacuum evaporated metal
真空蒸镀金属
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coating
包封
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epoxy resin coating
环氧树脂封装
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leads
导线
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radial leads of tinned wire
径向镀锡导线
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reference standard
引用标准
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iec 384-2 grade 1；sj/t 10787-1996
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climatic catalogue
气候类别
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40/85/21 (from 85℃ up to 105℃ with derating voltage 1.25%/℃)
(85℃至105℃间按1.25%/℃递减电压)
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capacitance versus
rated voltage(ur)
静电容量与额定电压
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0.001μf-10.0μf/100vdc 0.001μf-10.0μf/250vdc
0.001uf-4.7uf/400vdc 0.001uf-4.7uf/630vdc
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capacitance tolerance
静电容量误差
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m=±20% k=±10% j=±5%
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dissipation factor
（tangent of loss）
散逸因素（损耗角正切）
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c ≤1.0μf df≤0.8%;
c＞1.0μf df≤1.0% （at 20℃,1khz）
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voltage proof
耐电压
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1.6*ur unit:vdc (5s at 20℃)
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insulation resistance
绝缘电阻
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c≤0.33uf, ir≥15000mω; c＞0.33uf, ir*c≥3000s
ur≤100v testing by 50 v
ur＞100v testing by 100 v （1minute at 20℃ and rh≤65%）
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endurance
耐久性
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1000 hours with 125% of rated voltage at 85℃.after the test:
85℃条件下，125%之额定电压1000小时。试验完成后：
△c/c≤8%；△df≤0.30%（c＞1μf）；
△df≤0.50%（c≤1μf）
ir≥50% of the specified value （标称值）. （20℃ 1khz）
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