20160430051528SsEwa=A

Metal Film Resistors
MF Series
MERITEK
RoHS
FEATURES



Low Noise
Low T.C.R. 200ppm, 100ppm, 50ppm, 25ppm, 15ppm,
10ppm, and 5ppm
High Precision 1%, 0.5%, 0.25%,0.1% and 0.05%
PART NUMBERING SYSTEM
MF
Meritek Series
Power Rating: 1/4 watt
Code
12
20
25
50
100
200
Watt. 1/8
1/6
1/4
1/2
1
2
Temp. Coef.: 25ppm/⁰C
Code
Blank
B
D
F
TCR ±50ppm
±5ppm
±15ppm ±25ppm
Resistance: 20KΩ
Code
2002
1002
502
102
Res.
20KΩ
10KΩ
5KΩ
1KΩ
Tolerance: 0.1%
Code
T
A
B
C
Tol. ±0.01% ±0.05%
±0.1%
±0.25%
Packaging: Tape & Reel
Code
TR
B
Package
Tape and Reel
Bulk
25 F
2002
B
TR
300
3
DIMENSIONS
Type
Body (mm)
Leadwire (mm)
(L)
(D)
(H)
(d±0.03)
MF12
3.3+0.2
1.8 ±0.3
29±2
0.45±0.03
MF20
3.3+0.2
1.8 ±0.3
29±2
0.45±0.03
MF25S
3.3+0.2
1.8 ±0.3
29±2
0.45±0.03
MF25
6.3±0.5
2.3±0.3
28±2
0.55±0.03
MF50S
6.3±0.5
2.3±0.3
28±2
0.55±0.03
MF50
9.0±0.5
3.2±0.5
26±2
0.65±0.03
MF100S
9.0±0.5
3.2±0.5
26±2
0.65±0.03
MF100
11.5±1.0
4.5±0.5
35±2
0.78±0.03
MF200S
11.5±1.0
4.5±0.5
35±2
0.78±0.03
MF200
15.5±1.0
5.0±0.5
32±2
0.78±0.03
MF300S
15.5±1.0
5.0±0.5
32±2
0.78±0.03
Rev. 7b
Metal Film Resistors
MF Series
MERITEK
RoHS
SPECIFICATIONS
Power rating
o
@ 70 C
Max working voltage
Max overload voltage
Dielectric withsanding
voltage
Operation Temp.
MF12
MF20
MF25S
MF25
MF50S
MF50
150V
150V
200V
250V
300V
350V
400V
500V
500V
500V
500V
300V
300V
400V
500V
500V
500V
600V
700V
700V
1000V
1000V
300V
300V
300V
400V
400V
500V
500V
700V
700V
1000V
1000V
-55°C to +155°C
Value Range. ±1%
0.1Ω~1Ω
Value Range. ±1%, ±0.5%
1Ω~1MΩ
Value Range. ±0.25%, ±0.1%, ±0.05%
MF100S MF100 MF200S MF200 MF300S
10Ω~100KΩ
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
2.5 times RCWV for 5 seconds
±(0.25%+0.05Ω)
Temperature Coefficient (T.C.R.)
Resistance value at room Temperature and room
By Type
Temperature+100°C
Voltage Proof
In V-Block for 60 seconds
By Type
Pulse Overload
4 times RCWV for10000cycles (1sec on, 25secs off)
±(0.75%+0.05Ω)
Insulation Resistance
In V-Block
>10000MΩ
Load Life
70°C at RCWV for1000hrs. (1.5hrs on, 0.5hrs off)
±(1.5%+0.05Ω)
40±2°C 90~95%RH at RCWV for1000hrs. (1.5hrs on,
Load Life In Humidity
±(1.5%+0.05Ω)
0.5hrs off)
Temperature Cycling
Solder Ability
-40°C/85°C with 1000 cycles.
(20min for both low and high Temperature , transfer
260±5°C for 2±0.5 seconds
time less 30s)
260±5°C for 10 seconds±1 second or
Resistance to Soldering Heat
±(0.75%+0.05Ω)
95% min. coverage
±(0.25%+0.05Ω)
350±10°C for 3.5 seconds± 0.5 second
No deterioration of
Resistance To Solvent
Trichloroethane for 1 min with ultrasonic.
Terminal Strength
Direct load for 10 sec. In the direction off the terminal
coatings and markings
Tensile: 2.5kg
leads.
Reference Standards: IEC 60115-1
Storage Temperature: 25±3°C; Humidity < 80%RH
Rev. 7b
Metal Film Resistors
MF Series
MERITEK
RoHS
POWER GRAPH
HOT-SPOT TEMPERATURE
Rev. 7b
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