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Products
產(chǎn)品
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Metal Film Fixed Resistors
金屬膜固定電阻器
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Features
特點(diǎn)
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1. Low temperature coefficient ,high precision ,and
good high frequency performance .
低溫度系數(shù)、精度高、高頻性好。
2. Operating ambient temperature
使用環(huán)境溫度：-55°C ~+155°C
3. Film the metal in Vacuum ,the surface coating is
green resin with the good waterproof .
真空濺射金屬皮膜，涂層為湖綠色環(huán)氧樹脂，防水性好。
4. Resistance tolerance 阻值誤差 : ±5%，±1%. 0.1% 0.01%
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Part No.
料號(hào)
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Power
功率
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Resistance
tolerance
阻值范圍
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Max. working
Voltage
最大工作電壓
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Max. overload
voltage
最大負(fù)荷電壓
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Max. insulation
voltage
最高絕緣電壓
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CMF014S
MFR014S
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1/4WS
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0R~22M
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150V
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300V
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300V
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CMF014
MFR014
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1/4W
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0R~22M
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250V
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500V
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500V
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MFR01S
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1WS
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0R1~22M
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350V
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700V
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700V
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MFR01B
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1W
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0R1~22M
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500V
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1000V
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1000V
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MFR02S
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2WS
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0R1~22M
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500V
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1000V
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1000V
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MFR02B
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2W
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0R1~22M
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500V
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1000V
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1000V
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MFR03S
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3WS
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0R1~22M
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500V
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1000V
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1000V
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MFR03B
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3W
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0R1~22M
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700V
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1200V
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1000V
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MFR05S
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3WS
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0R1~22M
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700V
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1200V
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1000V
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Test Item 測試項(xiàng)目
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Test Condition 測試條件
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Performance
性能
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Temperature Coefficient
溫度系數(shù)
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The resistance value at normal temperature and normal temperature
added 100°C, calculate per C resistance value change rate.
在常溫及常溫+100°C時(shí)分別測量電阻值并計(jì)算每度的阻值變化。
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±300ppm/°C
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Short Time overload
短時(shí)間過負(fù)荷
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10×rated voltage or Max. overload voltage(get the lower) for 5 seconds.
施加10倍額定功率的電壓或最高負(fù)荷電壓（取較小者）5秒。
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R≤±(0.5%R0+0.05Ω)
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Pulse overload
斷續(xù)過負(fù)荷
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At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off).
4倍額定電壓或最高負(fù)荷斷續(xù)電壓（取較小者）測試1秒，
停25秒，循環(huán)10000±200次。
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R≤±(1%R0+0.05Ω)
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Resistance to soldering Heat 耐焊接熱
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Immerge into the 350±10°C tin stove for 2~3seconds.
在350±10°C錫爐中浸入2~3秒。
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R≤±(0.5%R0+0.05Ω)
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Solderability
可焊性
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Immerge into the 245±3°C tin stove for 2~3seconds.
在245±3°C錫爐中浸入2~3秒。
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The soldering area is
over 95%焊錫面積覆蓋率達(dá)95%以上
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Temperature cycling
溫度循環(huán)
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At -55°C for 30 min. ,then at+25°C for 10~15°C,then at +125°C for 30 min., then at +25°C for 10~15 min., total 5cycles. 在-55°C時(shí)放置30分鐘，然后在+25°C時(shí)放置10~15分鐘，然后再在+275°C時(shí)放置30分鐘，接著在+25°C時(shí)放置10~15分鐘，共循環(huán)5次。
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R≤±(0.5%R0+0.05Ω)
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Load life in humidity
耐濕負(fù)荷壽命
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Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 40±2°C and 90~95% relative humidity. 在溫度為40±2°C，相對(duì)濕度為90~95%的恒溫恒濕箱中，施加額定電壓或最大工作電壓（取較小者）共1000小時(shí)（通電0.5小時(shí)，斷電0.5小時(shí)）
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R≤±(2%R0+0.05Ω)
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Load life in heat
耐濕負(fù)荷壽命
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Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 70±2°C. 在溫度為70±2°C的恒溫恒濕箱中，施加額定電壓或最大工作電壓（取較小者）共1000小時(shí)（通電0.5小時(shí)，斷電0.5小時(shí)）
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R≤±(2%R0+0.05Ω
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