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参数资料
| 型号： | RC |
| 厂商： | TT Electronics / Welwyn |
| 英文描述： | Precision Metal Film Resistors |
| 中文描述： | 精密金属膜电阻 |
| 文件页数： | 2/3页 |
| 文件大小： | 192K |
| 代理商： | RC |
CECC 40101-004 CECC 40101-804
*Actual Performance
Requirements
Maximum
Typical
Load at commercial rating: 1000 hours at 70°C
R%
0.3
0.1
Load at CECC rating: 1000 hours at 70°C
R%
0.5
0.3
0.05
Dry heat: 1000 hours at 155°C
R%
0.5
**1.0
0.15
Shelf life: 12 months at room temperature
R%
Not specified
0.1
0.03
Derating from rated power at 70°C
Zero at 155°C
50% at 125°C
Short term overload
R%
0.1
0.02
Climatic
R%
0.5
0.3
0.1
Climatic category
55/155/56
55/125/56
55/155/56
Long term damp heat
R%
0.5
0.1
Temperature rapid change
R%
0.1
**0.2
0.05
Resistance to solder heat
R%
0.1
0.06
0.03
Vibration and bump
R%
0.1
0.06
0.02
Noise (in a decade of frequency)
V/V
Not specified
1.0
0.1
Voltage coefficient of resistance
ppm/V
Not specified
<1
Construction
A metal film is deposited onto a high quality ceramic former.
Nickel-plated steel caps are force fitted to the former and
termination wires are welded to the caps.
The resistor is adjusted to value by a helical cut in the film
and the body is protected with a specially formulated epoxy
coating.
Terminations
Material
Solder coated copper wire
Strength
The terminations meet the requirements of
IEC 68.2.21.
Solderability
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
Precision Metal
Film Resistors
RC series
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
174
Issue B 03.02
Welwyn Components
Marking
Type reference, TCR code, resistance value and
tolerance code.
The resistance values conform to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Performance Data
Note:
*An 0.01 ohm addition to be added to the performance claims of all resistors <10R.
** All products within the specified approved range meet CECC requirements.
Dimensions (mm) & Weight (g)
PCB
Min.
mounting
Bend
Type
L max
D max
f min
d nom
centres
Radius
Wt. nom
RC55
7.2
2.5
30
0.6
10.2
0.6
0.24
RC65
10.0
3.7
30
0.6
12.7
0.6
0.40
RC70
15.5
5.5
30
0.8
18.4
1.2
1.15
Physical Data
L
D
f
d
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