CF
carbon film leaded resistors
EU
features
Flameproof coating is available (specify CFP)
Reduced body size (specify CFS/CFPS)
Suitable for automatic machine insertion
Marking: Tan with color-coded bands on CF
Green body color with color-coded bands on CFP
Ivory body color with color-coded bands on CFS1/4
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
dimensions and construction
L l
Trimming Line Ceramic Core
D
d
Dimensions inches (mm)
Marking Resistive End Lead
l**
Film Cap Wire
Type L C (max.) D d (nom.)
Standard Long
Insulation Coating
CFS1/4 .126.008 .134 .067.008 .018
CFPS1/4 (3.20.2) (3.4) (0.45)
(1.70.2)
C
.551 Min.* .787 Min.***
(14.0 Min.) (20.0 Min.)
CF1/4 .2400.2 .280 .092.012 .024
CFP1/4 (6.10.5) (7.1) (2.30.3) (0.6)
CFS1/2 .248.02 .280 .112.012 .024
CFPS1/2 (6.30.5) (7.1) (2.850.3) (0.6)
.787 Min. __
(20.0 Min.)
CFB1/2 .354.039 .433 .138.02 .028
CFPB1/2 (9.01.0) (11.0) (3.50.5) (0.7)
* Forming code S is applied for bulk type.
** Lead length changes depending on taping and forming type.
*** Long type is custom-made
ordering information
New Part # CF 1/4 C T52 R 103 J
Power Termination Nominal
Type Taping and Forming Packaging Tolerance
Rating Material Resistance
CF S1/4: 0.25W C: SnCu Axial: T26, T52, L52 A: Ammo 2 significant G:2%
figures + 1
CFP 1/4: 0.25W Radial: VT, MT, MHT, VTP, VTE R: Reel J: 5%
multiplier
S1/2: 0.5W U Forming: U, UCL
R indicates
B1/2: 0.5W M Forming: M5, M10, M12.5
decimal on
L Forming: L10, L12.5
value <10
S Forming: S
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. 5/20/16
KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 157
resistorsresistors
CF
carbon film leaded resistors
applications and ratings
Minimum Resistance Resistance Absolute Absolute
T.C.R.
Power
Part Dielectric Range Range Maximum Maximum
(ppm/C)
Rating
Designation Withstanding E-24 E-24 Working Overload
@ 70C
+350 to -450 0 to -700 0 to -1000 0 to -1300
Voltage (G2%) (J5%) Voltage Voltage
CFS1/4
10 - 330k 2.2 - 1M
300V 2.2 - 47k 51k - 100k 110k - 330k 360k - 1M 250V 500V
CFPS1/4 10 - 100k 2.2 - 1M
0.25W
CF1/4
1.1M - 5.1M 2.2 - 5.1M
500V 2.2 - 100k 110k - 330k 360k - 1M 300V 600V
CFP1/4 2.2 - 1M
CFS1/2 1.0 - 91k 1.1M - 2.2M 2.4M - 5.1M 10 - 1M 1.0 - 5.1M
0.50W 700V 100k - 1M 350V 700V
CFPS1/2 2.2 - 91k 2.2 - 1M
CFB1/2 0.50W 700V 2.2 - 100k 110k - 1M 1.1M - 2.2M 2.4M - 5.1M 2.2 - 5.1M 400V 800V
Operating temperature: -55C ~ +155C
environmental applications
Derating Curve Surface Temperature Rise Load Life @ 70C, 1000 Hr
100 60
+2
CFS1/4
50
80
+1
CFS1/2
40
60 CFB1/2
30 CFPS1/4 0
CFS1/4
40
20
-1
20
10
0 0
-2
-60 -40 -20 0 20 40 60 801001120 140 60 025 50 75 100 10 100 1k 10k 100k 1M
-55 70 155
Ambient Temperature % Rated Power Resistance
(C)
( )
For resistors operated at an ambient temperature
of 70C or above, a power rating shall be derated
in accordance with the above derating curve.
Performance Characteristics
Requirement R (% + 0.05)
Parameter Limit Typical Test Method
Within specified
Resistance Measuring points are at 10mm 1mm from the end cap.
tolerance
Within specified
T.C.R. +25C/+125C
T.C.R.
Overload (Short time) 1% 0.5% Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is lower
Resistance to Solder Heat 1% 0.5% 260C 5C, 10 seconds 1 second
No lead-coming off
Terminal Strength Twist 360C, 5 times
and loose terminals
Rapid Change of Temperature 1% 0.5% -55C (30 minutes), +125C (30 minutes), 5 cycles
Moisture Resistance 5% 2.5% 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
Endurance at 70C 3% 1.5% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
No abnormality
in appearance.
Resistance to Solvent Ultrasonic washing with Isopropyl alcohol for 2 minutes.
2
Marking shall be
(CFS & CFPS only) Power: 0.3W/cm , f: 28kHz, temp: 35C5C
easily legible.
Flame test: The test flame shall be applied and removed for each 15 seconds
respectively to repeat the cycle 5 times.
No evidence
Overload flame retardant: Power (AC) corresponding to 2, 4, 8, 16 and 32
Flame Retardant
of flaming or
times the power rating shall be applied for each 1 minute until disconnection
(CFS & CFPS only)
self-flaming
occurs. However the applied voltage shall not exceed 4 times the maximum
operating voltage.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 2/20/17
158 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com
% Rated Power
Surface Temperature Rise (C)
R/R (%)