Metal Film Resistors
MF
Series
MERITEK
F
EATURES
•
•
•
•
•
Economically priced for commercial and industrial applications
Wide selection of power ratings and resistance values
EIA color coding
Resistance to industrial solvent
Standard tape & reel package
P
ART
N
UMBERING
S
YSTEM S
MF
Meritek Series
Power Rating
CODE
12
0.125
W
16
0.16W
25
0.25W
20
0.50W
100
1W
200
2W
25
F
1003
F
TR
Temperature Coeffient
CODE
CODE
Resistance
First 3 digits are significant
4
TH
digit is multiplier
“R” indicates decimal for values below 10 ohm
Tolerance
CODE
B
±0.1%
D
±0.5%
F
±1%
C C
±10±10 ppm/°C
p
p
m/°C
F F
25
ppm/°C
±25±
ppm/°C
GBlank
±50 m/
C
±50
pp
ppm/°C
H
Tape & Reel
R
ESISTANCE RANGE
Type
M F12 (1/8W)
Tolerance
±1%
±0.5%
±0.25%
±0.1%
MF25 (1/4W)
±1%
±0.5%
±0.25%
±0.1%
MF50 (1/2W)
±1%
±0.5%
±0.25%
±0.1%
MF100 (1W)
±1%
±0.5%
±0.2 5 %
±0.1%
MF200 (2W)
±1%
±0.5%
±0.25%
±0.1%
TC±25ppm
1 0 0 -1 0 0 K
1 0 0 -1 0 0 K
1 0 0 -1 0 0 K
1 0 0 -1 0 0 K
51.1 - 5 1 1 K
51.1 - 5 1 1 K
1 0 0 -3 3 0 K
1 0 0 -1 5 0 K
51.1 - 1 M
51.1 - 1 M
1 0 0 -5 1 1 K
1 0 0 -3 3 0 K
51.1 - 1 M
51.1 - 1 M
1 0 0 -5 1 1 K
1 0 0 -3 3 0 K
51.1 - 1 M
51.1 - 1 M
1 0 0 -5 1 1 K
1 0 0 -3 3 0 K
1 0 -1 M
1 0 -1 M
51.1 - 3 3 0 K
1 0 0 -1 5 0 K
1 0 - 2.2
1 0 -1 M
51.1 - 5 1 1 K
1 0 0 -3 3 0 K
1 0 -2.2M
1 0 -1 M
51.1 - 5 1 1 K
1 0 0 -3 3 0 K
1 0 -2.2M
1 0 -1 M
51.1 - 5 1 1 K
1 0 0 -3 3 0 K
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 5 . 1 1 M
5.11- 2 . 4 M
5.11- 2 . 4 M
5.11- 2 . 4 M
TC±50ppm
1 0 -1 M
51.1 - 2 0 0 K
51.1 - 2 0 0 K
TC±100ppm
5.11- 5 1 1 K
5.11- 5 1 1 K
5.11- 5 1 1 K
D
IMENSIONS
Type
Mil
Style
RN-50
RN-55
RN-60
RN-65
RN-70
Body
(L)
3.3 ±0.3
6.3 ±0.5
9.0 ±0.5
11.5 ±1.0
15.5 ±1.0
(D)
1.8 ±0.3
2.3 ±0.3
3.2 ±0.5
4.5 ±0.5
5.0 ±0.5
Leadwire
(H)
29 ±2
28 ±2
26 ±2
35 ±2
32 ±2
(d±0.03)
0.45
0.55
0.65
0.78
0.78
MF12
MF25
MF50
MF100
MF200
G
ENERAL SPECIFICATION
Type
Power Rating
70
o
C
MF12
MF25
MF50
MF100
MF200
0.125W
0.25W
0.5W
1W
2W
125
o
C
0.05W
0.1W
0.125W
0.25W
0.5W
Max Working
Voltage
70
o
C
200
250
350
500
500
125
o
C
150
200
250
300
350
Max
Overload
Voltage
o
70 C 125
o
C
400
500
700
1000
1000
300
400
500
600
700
P
ERFORMANCE SPECIFICATIONS AND COMPARISON
T
EST
MF12
Temperature cycling(- 6 5 t o 1 5 0
o
C)
Low Temp Operation(- 6 5 C)
Short Time Overload
Terminal Strength(5lb,pull)
Resistance to soldering Heat +350 C
Moisture Resistance (MIL std 202)
Life 1000 hrs (Rated power)
Shock (50g,11ms)
Vibration- High Frequency(10~2000Hz)
Insulation Resistance
o
o
MF series % change in resistance ( ? R )
MF25
±0.25
±0.25
±0.20
±0.20
±0.10
±0.50
±0.50
±0.20
±0.20
MF50
±0.25
±0.25
±0.20
±0.20
±0.10
±0.50
±0.50
±0.20
±0.20
= 10
10
MF100
±0.25
±0.25
±0.25
±0.15
±0.10
±0.50
±0.50
±0.15
±0.20
MF200
±0.25
±0.25
±0.20
±0.15
±0.10
±0.50
±0.50
±0.15
±0.20
Mil- R- 2 2 6 8 4
Style RL
Requirements
= 1.00
= 0.50
= 0.50
= 0.50
= 0.50
= 1.50
= 2.00
= 0.50
= 0.50
= 10 ohm
9
Mil- R- 1 0 5 0 9
Chart C, E
Requirements
= 0.25
= 0.25
= 0.25
= 0.20
= 0.10
= 0.50
= 0.50
= 0.25
= 0.25
= 10
9
ohm
%
%
%
%
%
%
%
%
%
±0.25
±0.25
±0.25
±0.20
±0.1 0
±0.50
±0.50
±0.25
±0.25
ohm
rev: 5a
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