CF
carbon film leaded resistors
EU
features
•
•
•
•
Flameproof coating is available (specify “CFP”)
Reduced body size (specify “CFS/CFPS”)
Suitable for automatic machine insertion
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
leaded
resistors
dimensions and construction
L
D
Trimming Line
Ceramic Core
d
l
Marking
Resistive
Film
End
Cap
Lead
Wire
Type
L
C (max.)
.134
(3.4)
.280
(7.1)
.280
(7.1)
.433
(11.0)
Insulation Coating
C
CFS1/4
.126±.008
CFPS1/4
(3.2±0.2)
CF1/4
CFP1/4
.240±
+.028
-.02
+0.7
)
(6.1±
-0.5
Dimensions
inches
(mm)
l**
D
d (nom.) Standard
Long
+.008
.067
-.004
.018
+0.2
)
(0.45)
(1.7
-0.1
.551 Min.* .787 Min.***
(14.0 Min.) (20.0 Min.)
.024
.092±.012
(0.6)
(2.3±0.3)
.112±
+.012
-.026
+0.3
)
(2.85±
-0.65
CFS1/2
.248±.02
CFPS1/2
(6.3±0.5)
CFB1/2
.354±.039
CFPB1/2
(9.0±1.0)
.024
(0.6)
.028
(0.7)
.138±.02
(3.5±0.5)
.787 Min.
(20.0 Min.)
__
* Forming code S is applied for bulk type.
** Lead length changes depending on taping and forming type.
*** Long type is custom-made
ordering information
CF
Type
CF
CFP
1/4
Power
Rating
S1/4: 0.25W
1/4: 0.25W
S1/2: 0.5W
B1/2: 0.5W
C
Termination
Material
C: SnCu
T52
Taping and Forming
Axial: T26, T52, L52
Radial: VT, MT, MHT, VTP, VTE
U Forming: U, UCL
M Forming: M5, M10, M12.5
L Forming: L10, L12.5
S Forming: S
R
Packaging
A: Ammo
R: Reel
103
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
J
Tolerance
G: ±2%
J: ±5%
For further information
on packaging, please refer
to Appendix C.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/27/18
142
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
CF
carbon film leaded resistors
applications and ratings
Part
Designation
CFS1/4
CFPS1/4
CF1/4
CFP1/4
CFS1/2
CFPS1/2
CFB1/2
0.50W
0.50W
0.25W
500V
700V
700V
2.2Ω - 100kΩ 110kΩ - 330kΩ 360kΩ - 1MΩ
1.0Ω - 91kΩ
2.2Ω - 91kΩ
100kΩ - 1MΩ
Minimum
Power
Dielectric
Rating
Withstanding
@ 70°C
+350 to -450
Voltage
300V
T.C.R.
(ppm/°C)
0 to -700
0 to -1000
0 to -1300
Resistance Resistance Absolute
Range
Range
Maximum
E-24
E-24
Working
(G±2%)
(J±5%)
Voltage
10Ω - 330kΩ 2.2Ω - 1MΩ
10Ω - 100kΩ 2.2Ω - 1MΩ
2.2Ω - 5.1MΩ
2.2Ω - 1MΩ
2.2Ω - 1MΩ
2.2Ω - 5.1MΩ
250V
300V
350V
400V
Absolute
Maximum
Overload
Voltage
500V
600V
700V
800V
2.2Ω - 47kΩ 51kΩ - 100kΩ 110kΩ - 330kΩ 360kΩ - 1MΩ
1.1MΩ - 5.1MΩ
—
—
1.1MΩ - 2.2MΩ 2.4MΩ - 5.1MΩ 10Ω - 1MΩ 1.0Ω - 5.1MΩ
—
2.2Ω - 100kΩ 110kΩ - 1MΩ 1.1MΩ - 2.2MΩ 2.4MΩ - 5.1MΩ
Operating temperature: -55°C ~ +155°C
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40 -20
-55
Surface Temperature Rise
Surface Temperature Rise (°C)
60
50
Load Life @ 70°C, 1000 Hr
+2
CFS1/4
+1
∆
R/R (%)
40
30
20
10
0
0
25
50
75
CFS1/2
CFB1/2
CFPS1/4
CFS1/4
0
-1
0
20
40
60
80 100 120 140
70
Ambient Temperature
(°C)
160
155
100
-2
10
100
1k
10k
100k
1M
% Rated Power
Resistance
(Ω)
For resistors operated at an ambient temperature
of 70°C or above, a power rating shall be derated
in accordance with the above derating curve.
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Terminal Strength
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
Resistance to Solvent
(CFS & CFPS only)
Requirement
∆
R ±(% + 0.05Ω)
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
±1%
±0.5%
±1%
±0.5%
No lead-coming off
and loose terminals
Test Method
Measuring points are at 10mm ±1mm from the end cap.
+25°C/+125°C
Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is lower
260°C ±5°C, 10 seconds ± 1 second
Twist 360°C, 5 times
-55°C (30 minutes), +125°C (30 minutes), 5 cycles
40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
Ultrasonic washing with Isopropyl alcohol for 2 minutes.
Power: 0.3W/cm
2
, f: 28kHz, temp: 35°C±5°C
Flame test: The test flame shall be applied and removed for each 15 seconds
respectively to repeat the cycle 5 times.
Overload flame retardant: Power (AC) corresponding to 2, 4, 8, 16 and 32
times the power rating shall be applied for each 1 minute until disconnection
occurs. However the applied voltage shall not exceed 4 times the maximum
operating voltage.
2/20/17
—
±0.5%
±2.5%
±1.5%
––
±1%
±5%
±3%
No abnormality
in appearance.
Marking shall be
easily legible.
Flame Retardant
(CFS & CFPS only)
No evidence
of flaming or
self-flaming
––
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
143
leaded
resistors
