RC Series
Carbon Composition Resistors
Features:
•
•
•
•
•
•
Non-inductive design
Molded body for package uniformity
Ideal for pulse-load handling characteristics
Cut and formed product is available on select sizes.
Contact factory for details.
1W now available
RoHS compliant / lead-free
Stackpole Electronics, Inc.
Resistive Product Solutions
Electrical Specifications
Type / Code
RC 1/4
RC 1/2
RC 1
Power Rating (Watts)
@ 70ºC
0.25W
0.5W
1W
Maximum
Continuous
Working Voltage1
250V
350V
500V
Maximum
Pulse Voltage
400V
700V
1,000V
Dielectric Withstanding
Voltage
500V
700V
1,000V
Ohmic Range and Tolerance
10%
1Ω - 5.6MΩ
1Ω - 22MΩ
2.2Ω - 1MΩ
5%
2.2Ω - 5.6MΩ
1Ω - 22MΩ
-
1Lesser
of
√PR
or maximum working voltage.
Mechanical Specifications
Type / Code
RC 1/4
RC 1/2
RC 1
A
Body Length
0.248 ± 0.028
6.3 ± 0.7
0.374 + 0.031/-0.028
9.5 + 0.8/-0.7
0.56 ± 0.03
14.3 ± 0.7
B
Body Diameter
0.094 ± 0.004
2.4 ± 0.1
0.142 ± 0.008
3.6 ± 0.2
0.22 ± 0.01
5.7 ± 0.3
C
Lead Length (Bulk)
1.18 ± 0.12
30 ± 3
1.1 ± 0.12
28 ± 3
1.02 ± 0.12
26 ± 3
D
Lead Diameter
0.0236 ± 0.002
0.6 ± 0.05
0.0275 + 0.0028/-0.002
0.7 + 0.07/-0.05
0.04 ± 0.002
0.9 ± 0.05
Units
inches
mm
inches
mm
inches
mm
How to Order
SEI Type
Code
Nominal Resistance
Tolerance
Packaging
RC
Type
RC
Description
Carbon Comp
1/2
Code Wattage
1/4
0.25W
1/2
0.5W
1
1W
5.6M
Tolerance
5%
10%
Values
E24
5%
Type
1/4, 1/2
All
All
Qty
5,000
1,000
2,000
R
Description
Tape
Bulk
Ammo
Code
R
A
T
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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RC Series
Carbon Composition Resistors
Stackpole Electronics, Inc.
Resistive Product Solutions
Resistance Temperature Characteristics
Resistance Range
Under 1K
Maximum % resistance change from
room temperature (+25ºC) value
1K to 9.1K
10K to 91K
100K to 910K
1M to 10M
-55ºC
+2 to + 5
+5 to +9
+8 to +11
+10 to +14
+13 to +20
+105ºC
-4 to -2
-5 to -3
-7 to -5
-9 to -7
-14 to -9
Performance Characteristics (JISC 5201 – 1:1998)
Test
Voltage Proof
Overload
Termination Strength
Solderability
Resistance to Soldering Heat
Temperature Shock
Climatic Sequence
Test Results
No breakdown or flashover
±2% +0.05Ω
No visible damage, legible markings
Tensile: ±2% +0.05Ω. No visible damage
Bending: ±2% +0.05Ω. No visible damage
Torsion: ±2% +0.05Ω. No visible damage
In accordance with Clause 4.17.4.5
±3% +0.05Ω
No visible damage, legible markings
±2% +0.05Ω
No visible damage.
±10% +0.5Ω
Test Method
V-block method RC 1/4 100 VAC, 60 seconds
RC 1/2 500 VAC, 60 seconds
2.5 times the rated voltage or twice the limiting element voltage,
whichever is less. Severe, 5 seconds.
10N for 5 - 10 seconds
5N, twice
180ºC, two rotations
235ºC, 5 seconds
After immersion into flux, the immersion into solder shall be carried
out 4mm from the body at 350ºC for 3.5 seconds
5 cycles between -55ºC to 125ºC
Dry/Damp heat: 12 +12 hour cycle, first cycle
Cold/Damp heat: 12 + 12 hour cycle, remaining cycle D.C. load
40ºC 95% relative humidity for 56 days,
test a, b and c of Clause 4.24.2.1
Rated voltage, 1.5 hours ON, 0.5 hours OFF at 70ºC, 1,000 hours
±10% +0.5Ω
Damp Test, Steady State
Insulation resistance: R
≥100M
ohm.
No visible damage, legible markings
±10% +0.5Ω
Endurance @ 70ºC
Insulation resistance: R
≥1G
ohm.
No visible damage.
±10% +0.5Ω
Endurance @ 125ºC
Insulation resistance: R
≥1G
ohm.
No visible damage.
Operating Temperature Range: -55ºC to +125ºC
125ºC, no load, 1,000 hours
Reliability Test – Load Life in Moisture
Criteria (%)
Load Ratio
P/Pn (%)
0
20
∆
R/R
±5
60
100
Total
±10
Total
Total Testing
Time (Hrs)
2.984 x 10
6
6
6
6
7
Number of
Fractures (pcs)
6
4
2
3
15
0
Failure Ratio
ƛ
ƛCL
(60%)
0.201
0.134
0.067
0.1
0.125
0.0055
0.244
0.176
0.104
0.139
0.138
0.0077
Average Lifetime
(60% reliability level) (Hrs)
4.098 x 10
5.682 x 10
9.615 x 10
7.194 x 10
1.299 x 10
7.209 x 10
5
5
5
5
5
7
2.990 x 10
2.997 x 10
2.992 x 10
1.196 x 10
1.2 x 10
7
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
70
www.seielect.com
marketing@seielect.com
RC Series
Carbon Composition Resistors
Technical Guide:
Stackpole Electronics, Inc.
Resistive Product Solutions
1. Storage Conditions:
Temperature:
5 to 35ºC (40 to 95ºF)
Humidity:
25 – 60% relative humidity
Term:
2 years in factory poly-bag package (with desiccant)
Environment:
clean, dry environment, free of corrosive gases
2. Application precautions:
Lead forming:
forming is recommended at least 2mm of farther from the base of the lead
Solding:
soldering is recommended at least 4mm or farther from the base of the lead
3. Washing:
Carbon composition resistors are highly hygroscopic and changes in resistance value can occur if too much
moisture is absorbed. For this reason it is recommended not to use water or water-soluble solvents to clean these
components. Alcohol or hydrocarbon solvents are recommended for rinsing.
4. Soldering Recommendations:
Note: The conditions shown below are for reference. Please perform a mounting evaluation to assure compatibility.
a. Flow soldering (recommended profile for Sn and Sn/Pb solders)
b. Soldering iron (recommended for Sn and Sn/Pb solders)
Temperature of soldering tip:
300ºC, duration: 10 sec. max.
Temperature of soldering tip:
350ºC, duration: 3 sec. max.
Other:
1. Evaluate and confirm the compatibility of your assembly process with this product.
2. Refer to the catalog, the product news, and the specifications for details on the RC series resistors.
3. If you have any questions, please contact our sales staff.
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
71
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marketing@seielect.com
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