Spec. No.:
Date:
RC−K−HTS−0001
2017. 1. 10
/14
Sp e c i f i c a t i o n
Title:
Style:
FIXED CARBON COMPOSITION RESISTORS
RC1/4,1/2
RoHS COMPLIANCE ITEM
Halogen and Antimony Free
Product specification contained in this specification
are subject to change at any time without notice
If you have any questions or a Purchasing Specification for any quality
Agreement is necessary, please contact our sales staff.
Hokkaido Research Center
Approval by: T. Sannomiya
Drawing by: M. Shibuya
Note: Stock conditions
Temperature:
+5°C ∼ +35°C
Relative humidity: 60%R.H. max.
The period of guarantee: Within 6 month from shipment by the company.
Drawing No:
Title:
FIXED CARBON COMPOSITION RESISTORS
RC1/2,1/4
RC−K−HTS−0001
Page:
1/9
/14
1. Scope
1.1 This specification covers the detail requirements for fixed carbon composition resistors; rectangular type, style of RC1/2,
1/4.
1.2 Applicable documents
JIS C 5201−1: 2011, JIS C 5201−2: 2014, JIS C 5201−2−1: 1998
IEC60115−1: 2008, IEC60115−2: 2014, IEC60115−2−1: 1982
2. Classification
Type designation shall be the following form.
(Example)
RC
1/2
104
J
1
2
3
4
Style
1 Fixed carbon composition resistors
2 Rated dissipation
3 Rated resistance
104
104--> 100kΩ,
4 Tolerance on rated resistance
J
±5%
K
±10%
M
±20%
5 Packaging form
B
Bulk (loose package)
H
Horizontal forming
TB
52mm width taping box
TD
52mm width taping reel
3. Rating
3.1 The ratings shall be in accordance with Table−1.
Style
Rated dissipation
(W)
0.5
Rated resistance
range (Ω)
1∼22M
Table−1
Preferred number
series for resistors
E24
E12
E6
E24
RC1/4
0.25
1∼5.6M
E12
E6
Style
RC1/2
RC1/4
Limiting element
voltage (V)
350
250
Isolation voltage
(V)
500
100
Category temperature
range (°C)
−55∼+125
Tolerance on rated
resistance
J(±5%)
K(±10%)
M(±20%)
J(±5%)
K(±10%)
M(±20%)
B
5
Style
RC1/2
3.2 Climatic category
55/125/56
Lower category temperature
Upper category temperature
Duration of the damp heat, steady state test
−
55 °C
+125 °C
56days
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Drawing No:
Title:
FIXED CARBON COMPOSITION RESISTORS
RC1/2,1/4
RC−K−HTS−0001
Page:
2/9
/14
3.3 Stability class
10%
Limits for change of resistance:
−for
long−term tests
±(10%+0.5Ω)
−for
short−term tests
±(2%+0.1Ω)
3.4 Derating
The derated values of dissipation at temperature in excess of 70 °C shall be as indicated by the following curve.
100
Percentage
of the rated
dissipation
(%)
0
−55
70
125
Ambient temperature (°C)
Area of recommended
operation
Figure−1 Derating curve
3.5 Rated voltage
d. c. or a. c. r. m. s. voltage calculated from the square root of the product of the rated resistance and the rated dissipation.
E : Rated voltage (V)
E =
P · R
P : Rated dissipation (W)
R : Rated resistance (Ω)
Limiting element voltage can only be applied to resistors when the resistance value is equal to or higher than the critical
resistance value.
At high value of resistance, the rated voltage may not be applicable.
4. Packaging form
The standard packaging form shall be in accordance with Table−2.
Table−2
Standard packaging
Symbol
Packaging form
quantity / units
500 pcs.
B
Bulk (Straight lead)
1,000 pcs.
Loose
package
1,000 pcs.
H
∗
Horizontal forming
500 pcs.
TB
52mm width taping box
2,000 pcs.
3,000 pcs.
TD
52mm width taping reel
5,000 pcs.
∗
The packaging form symbol of horizontal forming refer to Paragraph 8.
Application
RC1/2
RC1/4
RC1/4
RC1/2
RC1/4, 1/2
RC1/2
RC1/4
Style
See 5.1
See 8
See 9
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Drawing No:
Title:
FIXED CARBON COMPOSITION RESISTORS
RC1/2,1/4
RC−K−HTS−0001
Page:
3/9
/14
5. Dimensions
5.1 Straight lead type
φ
d
H
L
H
φ
D
Style
RC1/2
RC1/4
L
9.5
+0.8
−0.7
Figure−2
Table−3
φD
3.6 ± 0.2
2.4 ± 0.1
H
28 ± 3
30 ± 3
Unit:mm
φd
0.7
+0.07
−0.05
6.3 ± 0.7
0.6 ± 0.05
6. Marking
6．1 Marking of product
The rated resistance and tolerance on rated resistance shall be marked by four color coding on the surface of resistor.
The color coding shall be based on JIS C 5062-2008
”Marking
codes for resistors and capacitors”．
The tolerance on rated resistance tolerance M(±20%) shall be none color of the forth color code.
6．2 Marking of package
The label of a minimum package shall be legibly marked with follows;
(1) Classification (Style, Rated resistance, Tolerance on rated resistance, Packaging form) (2) Lot No. (3) Quantity
(4) Manufacturer's name or trade mark (5) Others
7. Performance
7.1 The standard condition for tests shall be in accordance with Sub−clause 4.2, JIS C 5201−1: 2011.
7.2 The performance shall be satisfied in Table−4.
Table−4(1)
No.
Test items
Performance requirements
Condition of test (JIS C 5201−1)
1
Visual examination
As in 4.4.1
Sub−clause 4.4.1
The marking shall be legible, as
Checked by visual examination.
checked by visual examination.
2
Dimension
Sub−clause 4.4.2
As specified in Table−3 of this
specification.
Resistance
As in 4.5.2
Sub−clause 4.5
The resistance value shall correspond
with the rated resistance taking into
account the specified tolerance.
3
Voltage proof
Sub−clause 4.7
No breakdown or flash over
Method: V−block method
Test voltage: Alternating voltage with a peak
value of 1.42 times the insulation voltage.
Duration: 60 s ± 5 s
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Drawing No:
Title:
FIXED CARBON COMPOSITION RESISTORS
RC1/2,1/4
Table−4(2)
Condition of test (JIS C 5201−1)
Sub−clause 4.17
Without ageing
Method: 1 (The solder bath method)
Bath temperature: 235 °C ± 5 °C
Immersion time: 5 s ± 0.5 s
Depth immersion: A point within about 4mm
from the resistor body
Sub−clause 4.13
The applied voltage shall be 2.5 times the
rated voltage or twice the limiting element
voltage, whichever is the less severe.
Duration: 5 s
Visual examination
Resistance
Sub−clause 4.16
Sub−clause 4.16.2
The force; 10N
Duration: 10 s
±
1 s
Sub−clause 4.16.3
Method 1
Bending times: 2 times
Bending force: 5N
Sub−clause 4.16.4
Method A: Severity 2
(two successive Rotations of 180°)
Visual examination
Resistance
Sub−clause 4.18
Method: 1B
Solvent temperature: RC1/4: 300 °C ± 10 °C
RC1/2:350 °C ± 10 °C
Immersion time: 3.5 s ± 0.5 s
Depth of immersion:A point within 4±0.8mm
from the resistor body.
Visual examination
Resistance
RC−K−HTS−0001
Page:
4/9
/14
No
4
Test items
Solderability
Performance requirements
Good thinning as evidenced by free
flowing of the solder with wetting of the
terminations.
Overload
(in the mounted state)
No visible damage
Legible marking
∆R ≤
± (2%+0.1Ω)
5
Robustness of termination
Tensile
Bending
Torsion
No visible damage
∆R ≤
± (2%+0.1Ω)
Resistance to soldering heat
No visible damage
Legible marking
∆R ≤
± (3%+0.1Ω)
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
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