Precision Metal
Film Resistors
Welwyn Components
RCP series
• Precision resistors with
uprated power
Low TCRs over a wide resistance range
•
Tolerance down to 0.05%
•
Low noise and negligible voltage coefficient
•
Express delivery available
•
Electrical Data
RC55P
0.5
RC65P
1.0
RC70P
1.5
Notes
Power rating at 70°C
Resistance range
watts
ohms
volts
1R to 4M
350
1R to 4M
500
1R to 10M
500
Limiting element voltage
Isolation voltage
volts
500
500
700
TCR (20 to +70°C) & codes
Resistance tolerance (code)
Standard values
ppm/°C
%
5(V), 10(T), 15(Y), 25(D), 50(C), & 100(Z)
0.05(W), 0.1(B), 0.25(C), 0.5(D), & 1(F)
E24, E96 preferred
See resistance
restrictions
Any value to order
Thermal impedance
°C/watt
°C
110
70
60
Ambient temperature range
-55 to +155
Physical Data
Dimensions (mm) and Weight (g)
PCB
mounting
d nom. centres
Min
Bend
Radius
Wt.
nom.
Type
L Max
7.2
D Max
2.5
f min
30
d
RC55P
RC65P
RC70P
0.6
0.6
0.8
10.2
12.7
18.4
0.6
0.6
1.2
0.24
0.40
1.15
D
L
f
10.0
15.5
3.7
30
5.5
30
Construction
Marking
Ceramic rods are coated with a metal film and plated steel
caps are force fitted. A helical cut is used to adjust the film to
its final value.
Type reference, TCR code, resistance value and tolerance
code. The resistance value marking conforms to IEC 62.
Termination wires are welded to the caps and the resistor is
protected with a specially formulated epoxy coating.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuits.
Terminations
Material
Solder-coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21
Solderability
General Note
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© 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
Issue B · 03.02
176
TTELEC [ TT Electronics ]
