MERITEK
Carbon Film Resistors CF Series
FEATURES
• 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
RATING AND AVAILABILITY
TYPE CF12 CF25S CF25 CF50S CF50
CF100S CF100
CF200S CF200
Power rating @ 70oC
1/8W1/4W 1/4W 1/2W 1/2W 1W 1W 2W 2W
Max working voltage 250V 250V 250V 300V 350V 400V 450V 500V 500V
Max overload voltage 500V 500V 500V 500V 700V 800V 1000V 1000V 1000V
Dielectric withsanding voltage 300V 400V 500V 500V 700V 800V 1000V 1000V 1000V
DIMENSIONS
BODY LEADWIRE TYPE
(L) (D) (H) (d±0.03)
CF12 3.3 ±0.3 1.8 ±0.3 29±2 0.45
CF25S 3.3 ±0.3 1.8 ±0.3 29±2 0.45
CF25 6.3 ±0.5 2.3 ±0.3 28±2 0.55
CF50S 6.3 ±0.5 2.3 ±0.3 28±2 0.55
CF50 9.0 ±0.5 3.2 ±0.5 26±2 0.65
CF100S 9.0 ±0.5 3.2 ±0.5 26±2 0.65
CF100 11.5 ±1.0 4.5 ±0.5 35±2 0.78
CF200S 11.5 ±1.0 4.5 ±0.5 35±2 0.78
CF200 15.5 ±1.0 5.0 ±0.5 32±2 0.78
REQUIREMENT PERFORMANCE
Operating Temp Range -55 to 155o
C (derated at 70o
C/see chart)
ppm/ oC 1/4W 1/2Wand over
0 to -450 100K ohm 22K ohm
0 to -700 110K ohm-1M ohm 24K ohm-470K ohm
0 to -1000 1.1M ohm-2.2M ohm 510K ohm-2.2M ohm
Temperature
Cpefficient
(ppm/ oC)
0 to -1300 2.4M ohm
-
10M ohm 2.2M ohm
-
10M ohm
uV/V 1/8W1/4W and over
0.1 1 ohm-10K ohm
0.3 1 ohm-10K ohm 11K ohm-91K ohm
0.5 11K ohm-91K ohm 100K ohm-1M ohm
Noise(uV/V)
1.0 100K ohm 1.1M ohm
-
10M ohm
Short Time Overload R = ±(1% + 0.05 ohm)
Temperature Cycling R = ±(0.5% + 0.05 ohm)
Soldering Effect R = ±(1% + 0.05 ohm)
Vibration R = ±(0.5% + 0.05 ohm)
R > 100K R = ±5% Moisture
Resistance R 100K R = ±
(
3% + 0.05 ohm
)
R > 100K R = ±3% Load Life
R 100K R = ±
(
2% + 0.05 ohm
)
PART NUMBERING SYSTEM S
CF 25 -
103 J TR
Meritek Series
Power Rating
CODE 12 25 (S) 50 (S) 100 (S) 200 (S)
1/8W1/4W
1/2W
1W 2W
Resistance
First 2 digits are significant
3rd digit is multiplier
“R” indicates decimal for values below 10 ohm
Tolerance
Code G J K
±2% ±5% ±10%
Tape & Reel
Note: "S" in "CFXXS-" denotes small body size
rev: 5a
