Precision Metal Film Fixed Resistors
UniOhm
精密金属膜固定电阻器
RoHS Compliant
Feature (特性)
• 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
Part No.
Type
料号
类型
Power Rating
Dimension ( 尺寸 ) (mm)
功率
70°C
D
L
d± 0.05
H±3
Normal Size ( 正常尺寸 )
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
Derating Curve (降功率曲线)
负载比率(%)
Percent rated load (%)
MFR0W8
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
28
MFR006
MF-60-S
0.6W
2.2±0.5
6.5±1.0
0.54
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
Ambient temperature (环境温度)(°C)
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)]
Part No.
Type
料号
类型
MFR0W8
MF-12
MFR0S4
MF-25-S
MFR004
MF-40-SS
MFR0W4
MF-25
MFR0U2
MF-50-SS
MFR006
MF-60-S
MFR0S2
MF-50-S
Dielectric
Withstanding
Voltage
绝缘耐压
400V
Max.
Working
Voltage
Max.
Overload
Voltage
最大工作电压 最大过负荷电压
200V
400V
200V
200V
400V
500V
250V
500V
250V
250V
500V
700V
350V
700V
Standard Order 标准品
Special Order 特殊订购品
Tolerance
TCR
TCR
Resistance Range
公差
温度系数
Resistance Range Tolerance
阻值范围
公差
温度系数
阻值范围
±1%
± 50
10Ω-1MΩ
± 0.25%
± 15
51.1Ω ~ 200KΩ
±2%
± 100
10Ω-1MΩ
± 0.5%
± 25
51.1Ω ~ 511KΩ
±5%
± 200
1Ω-1MΩ
± 0.5%
± 50
51.1Ω ~ 511KΩ
±1%
± 50
10Ω-1MΩ
± 0.1%
± 15
10Ω ~ 1MΩ
±2%
± 100
1Ω-1MΩ
± 0.25%
± 25
10Ω ~ 1MΩ
±5%
± 200
1Ω-1MΩ
± 0.5%
± 50
10Ω ~ 1MΩ
±1%
± 50
10Ω-1MΩ
± 0.1%
± 15
100Ω ~ 330KΩ
±2%
± 100
10Ω-1MΩ
± 0.25%
± 25
51.1Ω ~ 511KΩ
MFR0W2
MF-50
±5%
± 200
1Ω-1MΩ
± 0.5%
± 50
10Ω ~ 1MΩ
MFR01W
MF-100
±1%
± 50
51.1Ω-1MΩ
± 0.1%
± 15
100Ω~ 330KΩ
MFR02W
MF-200
±2%
± 100
51.1Ω-1MΩ ± 0.25%
MFR03W
MF-300
±5%
± 200
MFR01S
MF-100-S
±1%
±50
MFR02S
MF-200-S
±2%
±100
±5%
±200
MFR03S
MF-300-S
1000V
500V
1000V
350V
350V
700V
350V
500V
1000V
1Ω-1MΩ
10Ω~1MΩ
± 25
51.1Ω ~ 511KΩ
± 0.5%
± 50
51.1Ω ~ 1MΩ
±0.1%
±15
100Ω~330KΩ
±0.25%
±25
51.1Ω~511KΩ
±0.5%
±50
51.1Ω~1MΩ
1
Precision Metal Film Fixed Resistors
RoHS Compliant
UniOhm
精密金属膜固定电阻器
Performance Specification (性能)
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%+0.05Ω), with no evidence of mechanical damage ( 无可见机械损伤 )
Dielectric withstanding voltage
Pulse overload
绝缘耐压
脉冲过负荷
With no evidence of flashover, mechanical damage, arcing or insulation breakdown
无击穿、飞弧及可见机械损伤
∆R/R ≤ ±(1%+0.05Ω), 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%+0.05Ω), 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%+0.05Ω), 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%; Flame retardant type ( 阻燃型 ): ∆R/R ≤ ±5%.
Load life
负载寿命
Normal type ( 普通型 ): ∆R/R ≤ ±1.5%; Flame retardant type ( 阻燃型 ): ∆R/R ≤ ±5%.
Current noise(µV/v)
电流噪声(µV/v)
Current Noise Level (电流噪声水平)
Ordering Procedure (Example: MFR 1/8W 1% 50PPM 47.5KΩ T/R-5000)
订购方式 (例如: MFR 1/8W 1% 50PPM 47.5KΩ T/R-5000)
M F R 0 W 8 F 4 7 5 2 T 5 0
Product Type (产品类型):
MFR = Metal Film Fixed Resistors
( 精密金属膜固定电阻 )
Special Feature (特征):
0 = Standard ( 标准品 )
F = Flame retardant ( 阻燃型 )
I = Non-Inductive ( 无感型 )
C = Flammable type ( 可燃性 )
Wattage
(功率):
Normal size
( 正常尺寸 ):
WG = 1/16W
W8 = 1/8W
W6 = 1/6W
W4 = 1/4W
W2 = 1/2W
1W = 1W
2W = 2W
3W = 3W
Small size
( 小尺寸 ):
S4 = 1/4W-S
S2 = 1/2W-S
06 = 0.6W-S
1S=1WS
2S=2WS
3S=3WS
Extra small size
( 超小尺寸 ):
U2 = 1/2W-SS
04 = 0.4W-SS
Resistance Value(阻值):
5%(E-24 series)
The 1st digit is “0”, the 2nd & 3rd digits are
for the significant figures of the resistance and
the 4th indicate the number of zeros following
5% 产品 (E-24 系列阻值 ):
第 1 位是 0, 第 2、3 位表示阻值的有
效数 , 第 4 位表示有几个 0.
≤2%(E-24,E-96 series):
The 1st digit is “0”, the 2nd & 3rd digits are
for the significant figures of the resistance and
the 4th indicate the number of zeros following;
≤2% 产品 (E-24, E-96 系列阻值 ):
第 1~3 位表示阻值的有效数 , 第 4 位
表示有几个 0.
Tolerance & TCR (公差&温度系数):
B=±0.1% 15PPM, C=±0.25% 25PPM,
D=±0.5% 50PPM, F=±1% 50PPM,
G=±2% 100PPM, J=±5% 200PPM
For special tolerance-TCR requirement, please indicate in
the purchasing order. Example: ±1% 15PPM
( 有特殊要求请订单说明。例如 :±1% 15PPM)
Packing Qty.
(包装数量):
1 = 1,000pcs
2 = 2,000pcs
3 = 3,000pcs
4 = 4,000pcs
5 = 5,000pcs
A = 500pcs
B = 2,500pcs,
0 = Bulk/Box
( 散装 / 盒装 )
Additional Information (注):
0 = NIL ( 标准品 )
Packing Type (包装类型):
A = Tape/Box ( 编带 / 盒装 )
T = Tape/Reel ( 编带 / 卷装 )
B = Bulk/Box ( 散装 / 盒装 )
P = Tape/Box of PT-26 product
[ 编带(PT-26 产品)/ 盒装 ]
2
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