KOA SPEER ELECTRONICS, INC.
SS-263 R4
AHA 6/20/07
Fixed Carbon Composition Resistor
RC 1/4, 1/2, 1 Series
1. Features
■
■
■
CERTIFIED
CERTIFIED
Improved pulse endurance characteristics compared to carbon-film devices
Wide resistance range is available, 1 ohm - 22M ohm
Stability class: 10%
2. Type Designation
Type designation shall be as the following form.
RC
Type
1/2
Power
Rating
1/4: 0.25W
1/2: 0.5W
1: 1W
T
Termination
Material
T: Sn
T52
Taping &
Forming
T52
H forming:
1/2 only
H60, H62:
1/4 only
A
Packaging
A: Ammo
R: Reel
Bulk:
No Designation
(RC 1: Bulk
Only, 500 pcs.)
104
Nominal
Resistance
2 significant
figures + 1
multiplier
J
Tolerance
J: ±5%
K: ±10%
3. Dimensions
D
L
H
d
Marking
Resistive
Film
End
Cap
Lead
Wire
Table 1
Type
RC 1/4
RC 1/2
RC 1
L
Insulation Core
Dimensions in inches (mm)
D
0.094±0.004
(2.4±0.1)
0.142±0.008
(3.6±0.2)
0.224±0.01
(5.7±0.3)
H
1.181±0.118
(30±3.0)
1.102±0.118
(28±3.0)
1.02±0.01
(26±0.3)
d
0.024±0.002
(0.6±0.05)
0.028
.... ..
-0.002
+0.07
(0.7
-0.05
)
0.035±0.002
(0.9±0.05)
+0.003
0.248±0.028
(6.3±0.7)
0.374
.... ..
-0.028
+0.8
(9.5
-0.7
)
0.562±0.02
(14.3±0.7)
+0.031
PAGE 1 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.
KOA SPEER ELECTRONICS, INC.
SS-263 R4
4. Standard Specifications
Style
Rated
Dissipation
at 70°C
W
0.2
Limiting
Element
Voltage
V
250
Rated
Resistance
Range
1 ohm ~
5.6M ohm
1 ohm ~
22M ohm
Temp. Coefficient
of Resistance %
@ -55°C @ +100°C @ +125°C
+6.5 ~ 0
+10 ~ 0
+13 ~ 0
RC 1/2
0.5
350
+15 ~ 0
+20 ~ 0
+6.5 ~ -3
RC 1
1.0
500
2.2 ohm ~
1.0M ohm
+10 ~ -3
+13 ~ -3
+15 ~ -3
––
––
––
––
––
+5 ~ -4
+6 ~ -5
+7.5 ~ -6
+1 ~ -7
+1 ~ -5
0 ~ -6
0 ~ -7.5
0 ~ -10
0 ~ -15
––
––
––
––
Rated Resistance
Range
1 ohm ~ 1k ohm
1.1k ohm ~ 10k ohm
11k ohm ~ 100k ohm
110k ohm ~ 1M ohm
1.1M ohm ~ 22M ohm
2.2 ohm ~ 1k ohm
12k ohm ~ 10k ohm
12k ohm ~ 100k ohm
120k ohm ~ 1M ohm
K (±10%):
E12 series
1000
-55°C
to
100°C
J (±5%):
E24 series
K (±10%):
E12 series
100
-55°C
to
125°C
Tolerance
Isolation
Voltage
V
Operating
Temperature
Range
°C
RC 1/4
500
Note 1 Rated Voltage:
√
(Rated dissipation) x (Rated resistance) (d.c. or a.c. r.m.s. voltage)
Note 2 Limited Element Voltage can only be applied to resistors when the resistance value is equal to or higher than the critical resistance value.
5. Derating Curve
The derated values of dissipation for temperatures in excess
of 70°C shall be indicated by the following curve.
100
80
% Rated Power
60
40
20
0
-60 -40 -20
-55
0
80 100 120 140 160
70
125
Ambient Temperature
(°C)
40
60
20
PAGE 2 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.
KOA SPEER ELECTRONICS, INC.
SS-263 R4
6. Performance Characteristics
JIS C5201-1:1998
Item
Visual Examination
Resistance
Requirement
Markings shall be legible,
as checked by visual examination
Resistance value shall correspond with
the rated resistance taking into account
the specific tolerance
No breakdown or flashover
Conditions
Clause 4.4.1
Checked by visual examination
Clause 4.5
Voltage Proof
Clause 4.7
V-block method RC 1/4 100 Va.c., 60s
RC 1/2 500 Va.c., 60s
RC 1 1000 Va.c, 60s
Clause 4.8
Measuring temperature: +20°C/-55°C/
+20°C/+125°C/+20°C
Clause 4.13
The applied voltage shall be 2.5 times of the
rated voltage or twice of the limiting element
voltage, whichever is the less severe, 5s.
Clause 4.16.2 10N for 5~10s; RC 1: 20N for 5~10s
Clause 4.16.3 5N twice; RC 1: 10N
Clause 4.16.4 180°C, 2 rotation
Clause 4.17
235°C, 5s
Clause 4.18
After immersion into the flux, the immersion
into solder shall be carried out 4mm from the
body at 350°C for 3.5s; RC 1: 350°C for 3.0s
Clause 4.19 5 cycles between -55°C and +125°C
RC 1: -55°C and +85°C
Clause 4.23
Dry/damp heat(12+12h cycle), first cycle/
cold/damp heat(12+12h cycle), remaining
cycle/D.C.load
Clause 4.24
40°C, 95%R.H., 56 days, test a) , b) and c)
of Clause 4.24.2.1
Clause 4.25.1 Rated voltage, 1.5h “ON”,
0.5h “OFF”, 70°C, 1,000h
Clause 4.25.3
125°C, no-load, 1,000h
Variation of Resistance
with Temperature
Overload
See ratings table
ΔR≤±(2%+0.1
ohm)
No visible damage, legible marking
Robustness of
Terminations
Tensile
Bending
Torsion
ΔR≤±(2%+0.1
ohm) No visible damage
ΔR≤±(2%+0.1
ohm) No visible damage
ΔR≤±(2%+0.1
ohm) No visible damage
Solderability
Resistance to
Soldering Heat
In accordance with Clause 4.17.4.5
ΔR≤±(3%+0.1
ohm)
No visible damage, legible marking
Rapid Change
of Temperature
Climatic sequence
ΔR≤±(2%+0.1
ohm) No visible damage
ΔR≤±(10%+0.5
ohm) Insulation resistance:
R≥100M ohm, No visible damage
Damp Test,
Steady State
Endurance at 70°C
Endurance at the Upper
Category Temperature
ΔR≤±(10%+0.5
ohm) Insulation resistance:
R≥100M ohm, No visible damage, legible marking
ΔR≤±(10%+0.5
ohm) No visible damage
Insulation resistance : R≥1G ohm
ΔR≤±(10%+0.5
ohm) No visible damage
Insulation resistance : R≥1G ohm
PAGE 3 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.
KOA SPEER ELECTRONICS, INC.
SS-263 R4
7. Typical Characteristics
Surge Resistance Characteristics
Relationship Between Load Ratio
and Category Temperature
Endurance at 70°C
Variation with Time
Frequency Characteristics
PAGE 4 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.
KOA SPEER ELECTRONICS, INC.
SS-263 R4
8. Packaging
Carbon composition resistors can be packaged in bulk, tape and reel, and tape and ammo box.
All resistors are packaged in sealed poly bags with desiccant to maintain a consistent humidity
during storage. If parts are removed from the protective plastic bag they should be used as
soon as possible or resealed in the plastic bag.
(1) Dimensions of Tape and Reel
Dimensions in inches (mm)
Code
RC 1/4, 1/2
R
A
10.24 ± 0.20
(260 ± 5)
*A'
11.02
(280)
B
2.95 ± 0.20
(75 ± 5)
C
1
C
2
d
0.57 ± 0.02
(14.5 ± 0.5)
*Y
0.12
(3)
2.38 ± 0.04 3.07 ± 0.04
(60.4 ± 1)
(78 ± 1)
* Values for reference
(2) Dimensions of Horizontal Forming
Dimensions in inches (mm)
Style
RC 1/4
RC 1/4
RC 1/2
Code
H60
H62
H
A
0.394 ± 0.020
(10.0 ± 0.5)
0.492 ± 0.020
(12.5 ± 0.5)
0.591 ± 0.020
(15.0 ± 0.5)
B
0.197 ± 0.020
(5.0 ± 0.5)
0.197 ± 0.020
(5.0 ± 0.5)
0.197 ± 0.020
(5.0 ± 0.5)
t
0.059
(1.5 max.)
0.059
(1.5 max.)
0.071
(1.8 max.)
PAGE 5 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.
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