KOA SF18YC1003B

insulated super miniature precision
metal film resistors
EU
resistors
SF
features
•Super high precision resistors with
a wide resistance range of 100Ω – 5.11MΩ
respond to tolerance ±0.01% and T.C.R. ±5×10−6/K
• Extremely stable resistors with less variation ±0.01%/year
• Designated resistances (marking in 4-digit effective figures)
of tolerances ±0.01% – ±0.25% are available
•Marking: black body color and alphanumeric marking
•Products meet EU RoHS requirements
dimensions and construction
Dimensions inches (mm)
Type
Lead
Wire
L
D
SF1/8
.413±.016
(10.5±0.4)
.142±.016
(3.6±0.4)
SF1/4
.630±.016
(16.0±0.4)
.217±.020
(5.5±0.5)
SF1/2
.787±.020
(20.0±0.5)
.264±.020
(6.7±0.5)
ød
Outer Case
Trimming
Line
Electrode
Resin for Cap
Sealing
Ceramic
Core
L Resistive Film
D
l
d (Nominal)
.026
(0.65)
1.50±.118
(38±3)
.031
(0.8)
ordering information
SF
1/8
Y
C
1003
B
Product
Code
Power
Rating
T.C.R.
(×10-6/K)
Terminal
Surface Material
Nominal
Resistance
Resistance
Tolerance
1/8: 0.125W
1/4: 0.25W
1/2: 0.5W
Y: ±5
T: ±10
C: SnCu
4 digits*
T : ±0.01%
Q: ±0.02%
A: ±0.05%
B: ±0.1%
C: ±0.25%
D: ±0.5%
* It becomes a real number when a nominal resistance is 4 or more digits of significant figures.
Contact us when you have control request for environmental hazardous material other than the substance specified by EU RoHS.
ratings
T.C.R. Type Power
-6
Rating
(×10
/K)
SF1/8YC
0.125W
SF1/8TC
SF1/4YC
0.25W
SF1/4TC
SF1/2YC
0.5W
SF1/2TC
T:±0.01% Q:±0.02%
E24, E96
E24, E96
Y: ±5
100 - 200k 100 - 200k
T: ±10
Y: ±5
100 - 511k 100 - 511k
T: ±10
Y: ±5
100 - 1M
100 - 1M
T: ±10
Resistance Range (Ω)
A:±0.05%
E24, E96
100 - 200k
100 - 511k
100 - 511k
100 - 1M
100 - 1M
100 - 3.57M
B:±0.1%
C:±0.25%
D:±0.5% E24, E96
E24, E96
E24, E96
100 - 200k 100 - 200k 100 - 200k
100 - 511k 100 - 511k 100 - 511k
100 - 511k 100 - 511k 100 - 511k
100 - 1M
100 - 1M
100 - 1M
100 - 1M
100 - 1M
100 - 1M
100 - 5.11M 100 - 5.11M 100 - 5.11M
Max.
Working
Voltage
Max.
Overload
Voltage
250V
500V
300V
600V
350V
700V
Rated Ambient Temperature: +70°C
Operating Temperature Range: −25°C – +85°C
Rated voltage = √Power Rating×Resistance value or Max. working voltage, whichever is lower.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/30/11
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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resistors
SF
insulated super miniature precision
metal film resistors
environmental applications
Derating Curve
100
% Rated Power
80
60
40
20
0
-40
-20
0
20
40
-25
60
80
70
100
85
Ambient Temperature (°C)
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
Performance Requirements
Test Items
∆R±%
Resistance
Within specified tolerance
T.C.R.
Within specified T.C.R.
Test Methods
25°C
SF1/8 R≤200kΩ: +25°C/-15°C and +25°C/+65°C, R>200kΩ: +25°C/+65°C
SF1/4 R≤511kΩ: +25°C/-15°C and +25°C/+65°C, R>511kΩ: +25°C/+65°C
SF1/2 R≤1MΩ: +25°C/-15°C and +25°C/+65°C, R>1MΩ: +25°C/+65°C
Overload (Short Time)
0.05
Rated voltage ×2.5 or Max. overload voltage whichever is lower, for 5s.
Resistance to Soldering Heat
0.05
350°C ±10°C, 3s +0.5s/-0s or 260°C ±5°C, 10s±1s
Rapid Change 0.05
of Temperature
-25°C (30min.)/ +85°C (30min.), 5 cycles
40°C ±2°C, 90%–95%RH, 1000h
Moisture Resistance
0.2
1.5h ON/0.5h OFF cycle
Endurance at 70°C
0.2
70°C ±3°C, 1000h
1.5h ON/0.5h OFF cycle
Variation Per Year
Normal temperature and humidity for a year
0.01/Year
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
132
1/30/11
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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