PDF《UniOhm》

Part No.

料号 Type 类型 Power Rating 功率 70°C Dimension ( 尺寸 ) (mm) D L d± 0.05 H ±

3 Normal Size ( 正常尺寸 ) MFR0W8 MF-12 1/8W 1.9±0.3 3.3±0.3 0.45

28 MFR0W4 MF-25 1/4W 2.2±0.3 6.5±1.0 0.54

28 MFR0W2 MF-50 1/2W 3.0±0.6 9.5±1.0 0.54

28 MFR01W MF-100 1W 4.5±0.6 11.5±1.0 0.65

28 MFR02W MF-200 2W 5.0±0.6 15.5±1.0 0.70

28 MFR03W MF-300 3W 6.0±0.6 17.5±1.0 0.75

28 Small Size & Extra Small Size ( 小型及超小型尺寸 ) MFR0S4 MF-25-S 1/4W 1.9±0.5 3.3±0.3 0.45

28 MFR004 MF-40-SS 0.4W 1.9±0.5 3.3±0.3 0.45

28 MFR0U2 MF-50-SS 1/2W 2.2±0.5 6.5±0.5 0.54

28 MFR0S2 MF-50-S 1/2W 2.7±0.5 9.0±1.0 0.54

28 MFR006 MF-60-S 0.6W 2.2±0.5 6.5±1.0 0.54

28 MFR01S MF-100-S 1WS 3.5±0.6 9.5±1.0 0.60

28 MFR02S MF-200-S 2WS 4.0±0.6 11.5±1.0 0.65

28 MFR03S MF-300-S 3WS 5.0±0.6 15.5±1.0 0.7

28 Part No. 料号 Type 类型 Dielectric Withstanding Voltage 绝缘耐压 Max. Working Voltage 最大工作电压 Max. Overload Voltage 最大过负荷电压 Standard Order 标准品 Special Order 特殊订购品 Tolerance 公差 TCR 温度系数 Resistance Range 阻值范围 Tolerance 公差 TCR 温度系数 Resistance Range 阻值范围 MFR0W8 MF-12 400V 200V 400V ±1% ±2% ±5% ±

50 ±

100 ±

200 10?-1M? 10?-1M? 1?-1M? ± 0.25% ± 0.5% ± 0.5% ±

15 ±

25 ±

50 51.1? ~ 200K? 51.1? ~ 511K? 51.1? ~ 511K? MFR0S4 MF-25-S 200V 200V 400V MFR004 MF-40-SS MFR0W4 MF-25 500V 250V 500V ±1% ±2% ±5% ±

50 ±

100 ±

200 10?-1M? 1?-1M? 1?-1M? ± 0.1% ± 0.25% ± 0.5% ±

15 ±

25 ±

50 10? ~ 1M? 10? ~ 1M? 10? ~ 1M? MFR0U2 MF-50-SS 250V 250V 500V MFR006 MF-60-S MFR0S2 MF-50-S 700V 350V 700V ±1% ±2% ±5% ±

50 ±

100 ±

200 10?-1M? 10?-1M? 1?-1M? ± 0.1% ± 0.25% ± 0.5% ±

15 ±

25 ±

50 100? ~ 330K? 51.1? ~ 511K? 10? ~ 1M? MFR0W2 MF-50 MFR01W MF-100 1000V 500V 1000V ±1% ±2% ±5% ±

50 ±

100 ±

200 51.1?-1M? 51.1?-1M? 1?-1M? ± 0.1% ± 0.25% ± 0.5% ±

15 ±

25 ±

50 100?~ 330K? 51.1? ~ 511K? 51.1? ~ 1M? MFR02W MF-200 MFR03W MF-300 MFR01S MF-100-S 350V 350V 700V ±1% ±2% ±5% ±50 ±100 ±200 10Ω~1MΩ ±0.1% ±0.25% ±0.5% ±15 100Ω~330KΩ MFR02S MF-200-S 350V 500V 1000V ±25 51.1Ω~511KΩ MFR03S MF-300-S ±50 51.1Ω~1MΩ ? EIA standard color coding. EIA标准色码 ? Flame retardant type available 可供不燃性涂装 ? Low noise & voltage coefficient 噪声低,电压系数小 ? Low temperature coefficient range 温度系数低 ? Multiple epoxy coating on vacuum-deposited metal film provideds superior moisture protection 真空溅射金属皮膜涂多层环氧树脂,防水性效果好 ? Nichrome resistive element provides stable performance in various environments 镍基金属膜层的采用使各项性能更加稳定 Feature (特性) Precision Metal Film Fixed Resistors Standard Non-flammable coating for Small size type (except MF-50-S). [小尺寸标准不燃性涂装 ( MF-50-S除外)] Derating Curve (降功率曲线) Percent rated load (%) 精密金属膜固定电阻器 Ambient temperature (环境温度)(°C) 负载比率(%) UniOhm RoHS Compliant

1 Current Noise Level (电流噪声水平) Performance Specification (性能) Precision Metal Film Fixed Resistors Temperature coefficient 温度系数 according to page

58 ( 参考第

58 页)Short-time overload 短时间过负荷 ?R/R ≤ ±(0.5%+0.05?), with no evidence of mechanical damage ( 无可见机械损伤 ) Dielectric withstanding voltage 绝缘耐压 With no evidence of flashover, mechanical damage, arcing or insulation breakdown 无击穿、飞弧及可见机械损伤 Pulse overload 脉冲过负荷 ?R/R ≤ ±(1%+0.05?), with no evidence of mechanical damage ( 无可见机械损伤 ) Terminal strength 端子强度 No evidence of mechanical damage ( 无可见机械损伤 ) Soldering heat 耐焊接热 ?R/R ≤ ±(1%+0.05?), with no evidence of mechanical damage ( 无可见机械损伤 ) Solderability 可焊性 Min. 95% coverage ( 最少 95% 覆盖率 ) Resistance to solvent 耐溶剂 No deterioration of protective coating and marking ( 包封层,色码完整 ) Temperature cycling 温度循环 ?R/R ≤ ±(1%+0.05?), with no evidence of mechanical damage ( 无可见机械损伤 ) Load life in humidity 湿度寿命 Normal type ( 普通型 ): ?R/R ≤ ±1.5%;