EU
Super high precision resistors with
a wide resistance range of 100 – 5.11M
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
Outer Case
Trimming
Line
Electrode
Resin for Cap
Sealing
Ceramic
Core
Type
SF1/8
ød
SF1/4
Dimensions
inches
(mm)
L
.413±.016
(10.5±0.4)
.630±.016
(16.0±0.4)
.787±.020
(20.0±0.5)
D
.142±.016
(3.6±0.4)
.138±.020
(5.5±0.5)
.264±.020
(6.7±0.5)
d (Nominal)
.026
(0.65)
.031
(0.8)
l
Lead
Wire
1.50±.118
(38±3)
L
Resistive Film
D
SF1/2
SF
Product
Code
1/8
Power
Rating
1/8: 0.125W
1/4: 0.25W
1/2: 0.5W
Y
T.C.R.
(×10
-6
/K)
Y: ±5
T: ±10
C
Terminal
Surface Material
C: SnCu
1003
Nominal
Resistance
4 digits*
B
Resistance
Tolerance
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.
Type
Power
Rating
T.C.R.
(×10
-6
/K)
Y: ±5
T: ±10
Y: ±5
T: ±10
Y: ±5
T: ±10
Resistance Range
T:±0.01%
E24, E96
100 - 200k
100 - 511k
100 - 1M
Q:±0.02%
E24, E96
100 - 200k
100 - 511k
100 - 1M
A:±0.05%
E24, E96
100 - 200k
100 - 511k
100 - 511k
100 - 1M
100 - 1M
100 - 3.57M
B:±0.1%
E24, E96
100 - 200k
100 - 511k
100 - 511k
100 - 1M
100 - 1M
100 - 5.11M
C:±0.25%
E24, E96
100 - 200k
100 - 511k
100 - 511k
100 - 1M
100 - 1M
100 - 5.11M
D:±0.5%
E24, E96
100 - 200k
100 - 511k
100 - 511k
100 - 1M
100 - 1M
100 - 5.11M
Max.
Working
Voltage
250V
300V
350V
Max.
Overload
Voltage
500V
600V
700V
SF1/8YC
0.125W
SF1/8TC
SF1/4YC
0.25W
SF1/4TC
SF1/2YC
0.5W
SF1/2TC
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.
12/10/09
KOA Speer Electronics, Inc
Derating Curve
100
80
% RatedPower
60
40
20
0
-40
-20
-25
0
20
40
60
70
80
85
100
For resistors operated
Ambient Temperature (°C)
at an ambient temperature of 70°C or above,
a power rating shall be derated in accordance with the above derating curve.
Performance Characteristics
Test Items
Resistance
T.C.R.
Overload (Short Time)
Resistance to Soldering Heat
Rapid Change
of Temperature
Moisture Resistance
Endurance at 70°C
Variation Per Year
0.2
0.01%/Year
Performance Requirements
R±%
Within specified tolerance
Within specified T.C.R.
0.05
0.05
0.05
0.2
Test Methods
25°C
SF1/8 R 200k +25°C/-15°C and +25°C/+65°C, R>200k
25°C/+65°C
SF1/4 R 511k
25°C/-15°C and +25°C/+65°C, R>511k
25°C/+65°C
SF1/2 R 1M : +25°C/-15°C and +25°C/+65°C, R>1M
25°C/+65°C
Rated voltage ×2.5 or Max. overload vol. whichever is lower, for 5s.
350°C ±10°C, 3s +0.5s/-0s or 260°C ±5°C, 10s±1s
-25°C (30min.)/ +85°C (30min.), 5 cycles
40°C ±2°C, 90%–95%RH, 1000h
1.5h ON/0.5h OFF cycle
70°C ±3°C, 1000h
1.5h ON/0.5h OFF cycle
Normal temperature and humidity for a year
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1211/09
KOA Speer Electronics, Inc
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