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Precision Metal Film Resistors
Features:
••EIA standard colour coding
•• Low noise and voltage coefficient
•• Low temperature coefficient range
•• Wide precision range in small package
•• Too low or too high ohmic value can be supplied on case to case basis
•• Nichrome resistor element provides stable performance in various environment
•• Multiple epoxy coating on vacuum deposited metal film provides superior
moisture protection
Performance Specifications
Temperature Coefficient : Within the maximum temperature coefficient specified
Short Time Overload : ± (0.5% + 0.05 Ω) Maximum, with no evidence of mechanical damage
Insulation Resistance : Minimum 10,000 Mega Ohms
Dielectric Withstanding Voltage : No evidence of flashover, mechanical damage, arcing or insulation breakdown
Pulse Overload : ±(1.0% + 0.05 Ω) Maximum, with no evidence of mechanical damage
Terminal Strength : No evidence of mechanical damage
Resistance to Soldering Heat : ±(1.0% + 0.05 Ω) Maximum, with no evidence of mechanical damage
Solderability : Minimum 95% coverage
Resistance to Solvent : No deterioration of protective coating and markings
Temperature Cycling : ± (1% + 0.05 Ω) Maximum, with no evidence of mechanical damage
Humidity (Steady state) : ± (2% + 0.05 Ω) Maximum, with no evidence of mechanical damage
Load Life in Humidity : Normal type ± (1.5% + 0.05 Ω) Maximum
Load Life : Normal type ± (1.5% + 0.05 Ω) Maximum
MCMF
Type
0
Feature Wattage
1002
B
W4
Tolerance
BA5 0
PPM
Requirement
Resistance Internal
Reference
Part Number Explanation:
Metal Film 0 = Standard
F = Non-Flame
W8 = 1/8W
W4 = 1/4W
1W = 1W
2W = 2W
3W = 3W
Small Size
S2 = 1/2W-S
Extra Small
Size
04 = 0.4W-SS
B = ±0.1%
C = ±0.25%
D = ±0.5%
F = ±1%
G = ±2%
J = ±5%
B = 15 ppm
C = 25 ppm
F = 50 ppm
G = 100 ppm
J = 200 ppm
1st to 3rd digits are
significant figures of the
resistance and the 4th
digit indicates the
number of zeros.
R = Decimal Point
1331 = 1.33 kohms
49R9 = 49.9 ohms
Precision Metal Film Resistors
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Part
Number Style Power Rating
at 70°C
Dimension (mm) Standard
Packing
Quantity
D Maximum L Maximum d ±0.05 H ±3 PT
Normal Size
MCMF0W8 MF 12 1/8 W (0.125 W) 1.85 6.8 0.45 28 52 5,000
MCMF0W4 MF 25 1/4 W (0.25 W) 2.5 3.5 0.54 28 52 5,000
MCMF0W2 MF 50 1/2 W (0.5 W) 3.6 10 0.54 28 52 1,000
MCMF01W MF 100 1 W 5 12 0.7 25 52 1,000
MCMF02W MF 200 2 W 5.5 16 0.7 28 64 1,000
MCMF034 MF 300 3 W 6.5 17.5 0.75 28 64 500
Small Size
MCMF0S4 MF 25-S 1/4 W (0.25 W) 1.85 3.5 0.45 28 52 5,000
MCMFF04 MF 40-SS 0.4 W 1.9 3.7 0.45 28 52 5,000
MCMF0S2 MF50-S 1/2 W (0.5W) 3 9 0.54 28 52 2,000
MCMF0M7 MF 75-S 0.75 W 3.5 10 0.54 28 52 5,000
MCMF01S MF 100-S 1 W 3.5 10 0.54 28 52 1,000
MCMF02S MF 200-S 2 W 5 12 0.7 28 52 1,000
MCMF03S MF 300-S 3 W 5.5 16 0.7 28 64 1,000
Dimensions : Millimetres
Notes:
• Extra small size types (-SS) are Non flame coating (Dark Green Colour)
Precision Metal Film Resistors
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General Specifications
Part
Number Style
Maximum
Working
Voltage
Maximum
Overload
Voltage
Dielectric
Withstanding
Voltage
Tolerance Resistance
Range TCR
Special Order
Tolerance Resistance
Range TCR
MC
MF12 MF12
200 V 400 V 400 V
±1% 10 Ω to 1 M
Ω±50 PPM/°C ±0.25% 51.1 Ωto
200 KΩ±15
PPM/°C
MC
MF0S4
MF
25-S ±2% 10 Ω to 1 M
Ω±100 PPM/°C
±0.5% 51.1 Ωto
511 KΩ
±25
PPM/°C
MC
MFF04
MF
40-SS 200 V 400 V 200 V ±5% 1 Ω to 1 M Ω±200 PPM/°C ±50
PPM/°C
MC
MF0W4 MF25 250 V 500 V 500 V ±1% 10 Ω to 1 M
Ω±50 PPM/°C ±0.1% 100 Ωto
100 KΩ±15
PPM/°C
MC
MF0W2 MF50
350 V 700 V 700 V
- - -
±0.1%
100 Ωto
300 KΩ
51.1 Ωto
511 KΩ
10 Ω to 1 M
Ω
±15
PPM/°C
±25
PPM/°C
±50
PPM/°C
MC
MF0S2
MF
50-S - - -
MC
MF01W
MF
100
500 V 1,000 V 1,000 V ±5%
51.1 Ωto 1
MΩ
51.1 Ωto 1
MΩ
10 Ω to 1 M
Ω
±50 PPM/°C
±100 PPM/°C
±200 PPM/°C
- - -
MC
MF02W
MF
200 - - -
MC
MF03W
MF
300 - - -
Derating Curve Load Life
Percent Rated Load (%)
Ambient Temperature (°C)
∆R/R (%)
Nominal Resistance (ΩΩ)
Precision Metal Film Resistors
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Part Number Table
Current Noise Level
Important Notice : This data sheet and its contents (the "Information") belong to the members of the Premier Farnell group of companies (the "Group") or are licensed to it. No licence is granted for the use of
it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces
all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use
made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted.
Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising)
is excluded. This will not operate to limit or restrict the Group's liability for death or personal injury resulting from its negligence. Multicomp is the registered trademark of the Group. © Premier Farnell plc 2012.
Description Part Number
Precision Metal Film Resistor MCMF0W4BB1002A50
Current Noise (µµV/V)
