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
CF
carbon film leaded resistors
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
ordering information
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
S1/4: 0.25W
1/4: 0.25W
S1/2: 0.5W
B1/2: 0.5W
C: SnCu
CF
CFP
G:±2%
J: ±5%
CF 1/4 C
Termination
Material
Type Power
Rating Nominal
Resistance ToleranceTaping and Forming
T52 103
A: Ammo
R: Reel
Packaging
R J
For further information
on packaging, please refer
to Appendix C.
dimensions and construction
Ceramic Core
d
D
Marking Resistive
Film
Insulation Coating
Trimming Line
End
Cap Lead
Wire
L l
C
L
CFS1/4
CFPS1/4 .126±.008
(3.2±0.2) .134
(3.4) .018
(0.45)
.787 Min.
(20.0 Min.) __
.551 Min.*
(14.0 Min.)
.024
(0.6)
.092±.012
(2.3±0.3)
.280
(7.1)
.240±0.2
(6.1±0.5)
CF1/4
CFP1/4
.024
(0.6)
.112±.012
(2.85±0.3)
.280
(7.1)
.248±.02
(6.3±0.5)
CFS1/2
CFPS1/2
Type C (max.) D d (nom.) Standard Long
Dimensions inches (mm)
.028
(0.7)
.138±.02
(3.5±0.5)
.433
(11.0)
.354±.039
(9.0±1.0)
CFB1/2
CFPB1/2
EU
.787 Min.***
(20.0 Min.)
l**
* Forming code S is applied for bulk type.
** Lead length changes depending on taping and forming type.
*** Long type is custom-made
167
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/05/17
resistors
.067 +.008
-.004
(1.7 +0.2)
-0.1
CF
carbon film leaded resistors
Resistance
Range
E-24
(G±2%)
Resistance
Range
E-24
(J±5%)
Part
Designation
Absolute
Maximum
Working
Voltage
Absolute
Maximum
Overload
Voltage
Power
Rating
@ 70°C
applications and ratings
Minimum
Dielectric
Withstanding
Voltage
CFS1/4
CFPS1/4
CF1/4
CFP1/4
CFS1/2
CFPS1/2
0.25W
0.50W
0.50W
300V 500V
600V
700V
250V
300V
350V
800V400V
500V
700V
700V
2.2Ω - 1MΩ
2.2Ω - 47kΩ51kΩ - 100kΩ
110kΩ - 330kΩ
110kΩ - 330kΩ
2.2Ω - 100kΩ
100kΩ - 1MΩ
110kΩ - 1MΩ
360kΩ - 1MΩ
—
—
—
1.1MΩ - 2.2MΩ
1.0Ω - 91kΩ
2.2Ω - 91kΩ
10Ω - 330kΩ
10Ω - 100kΩ
10Ω - 1MΩ
2.2Ω - 1MΩ
2.2Ω - 1MΩ
2.2Ω - 5.1MΩ
1.0Ω - 5.1MΩ
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 04060 80 100 160
70
20
Ambient Temperature
(°C)
0
-55
120
155
-20 140
Surface Temperature Rise
Temperature Rise (°C)
60
50
40
30
20
0255075
% Rated Power
0100
10
CFPS1/4
CFS1/4
Surface
CFS1/2
CFB1/2
Load Life @ 70°C, 1000 Hr
∆ R/R (%)
+2
+1
0
10 100 1k 10k
Resistance
(Ω)
-2 100k
-1
1M
CFS1/4
Performance Characteristics
CFB1/2
2.4MΩ - 5.1MΩ
1.1MΩ - 2.2MΩ
2.2Ω - 100kΩ2.2Ω - 5.1MΩ
T.C.R.
(ppm/°C)
+350 to -450 0 to -700 0 to -1000 0 to -1300
360kΩ - 1MΩ
1.1MΩ - 5.1MΩ
2.4MΩ - 5.1MΩ
2.2Ω - 1MΩ
Parameter
Requirement ∆ R ±(% + 0.05Ω)
Limit Typical Test Method
Resistance
T.C.R.
Measuring points are at 10mm ±1mm from the end cap.
+25°C/+125°C
Within specified
tolerance
Within specified
T.C.R.
—
—
Overload (Short time) Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is lower
±1% ±0.5%
Resistance to Solder Heat 260°C ±5°C, 10 seconds ± 1 second
±1% ±0.5%
Rapid Change of Temperature -55°C (30 minutes), +125°C (30 minutes), 5 cycles
±1% ±0.5%
Terminal Strength Twist 360°C, 5 times
No lead-coming off
and loose terminals —
Moisture Resistance 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±5% ±2.5%
Resistance to Solvent
(CFS & CFPS only) Ultrasonic washing with Isopropyl alcohol for 2 minutes.
Power: 0.3W/cm2, f: 28kHz, temp: 35°C±5°C
No abnormality
in appearance.
Marking shall be
easily legible.
––
Flame Retardant
(CFS & CFPS only)
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.
No evidence
of flaming or
self-flaming ––
Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±3% ±1.5%
168 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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
resistors
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.
Operating temperature: -55°C ~ +155°C
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
KOA Speer:
CF1/4L752J CF1/2LT52R3R3J CFS1/4LT52R272J CF1/4LT52R392J CFS1/4L560J CFS1/4L564J
CF1/4LT26A103J CF1/2L201J CF1/2L204J CF1/4LT52R331J CF1/4LT52R211J CF1/4LT52R334J
CF1/4LT52R824J CF1/4LT52R820J CF1/2L203J CF1/4LT52R820G CF1/2L3R0J CF1/4LT52R335J CF1/2L200J
CF1/4LT52R330J CF1/4LT52R333J CF1/2L205J CF1/2L202J CF1/4LT52R332J CF1/4L203J CF1/4L205J
CF1/4L3R9J CF1/4L200J CF1/4L201J CF1/4L204J CF1/4LT52R680G CF1/2L915J CF1/4LT52R561G
CF1/4LT52R684J CF1/4LT52R680J CF1/4L334J CF1/2LT52R183J CF1/4LT52R682J CF1/2L911J CF1/2L913J
CF1/4LT52R561J CF1/4LT52R565J CF1/2L912J CF1/2L910J CF1/4LT52R683J CF1/4LT52R681J CFS1/4L392J
CF1/4L391J CF1/2LT52R122J CF1/2LT52R1R1J CF1/4L395J CF1/2L5R6J CF1/4L273J CF1/4LR47J
CFS1/4L394J CF1/2LT52R1R5J CF1/2LT52R124J CF1/4L393J CF1/4LT52R622J CF1/2LT52R913J CF1/2L165J
CF1/2LT52R911J CF1/2LT52R7R5J CF1/2LT52R165J CF1/2LT52R163J CF1/2L161J CF1/4LVTPR5R1J
CF1/4LT52RR51J CF1/4LT52RR50J CFS1/4LT52R131J CFS1/4LT52R132J CF1/4L271J CF1/4LT52R624J
CF1/4LT52R6R8J CF1/4L272J CF1/4LT52R620J CF1/4L275J CF1/4LT52R623J CFS1/4L4R7J CF1/4L180J
CF1/4LT52R621J CF1/4LT52R6R2J CF1/2L182J CF1/2L5R1J CF1/2L180J CF1/2L184J CF1/4LR68J CF1/4L270J
CF1/4L274J CFS1/4LT52R562J CF1/4LT52R625J CF1/4LT52R912J CF1/4LT52R910G CF1/4LT52R300J
CF1/4LT52R915J CF1/4LT52R301G CF1/4LT52R914J CF1/4LT52R305J CF1/4LT52R302J CFS1/4LT52R100G
