Precision Metal
Film Resistors
RCP series
Welwyn Components
•
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
Power rating at 70°C
Resistance range
Limiting element voltage
Isolation voltage
TCR (20 to +70°C) & codes
Resistance tolerance (code)
Standard values
Thermal impedance
Ambient temperature range
°C/watt
°C
110
watts
ohms
volts
volts
ppm/°C
%
0.5
1R to 4M
350
500
RC65P
1.0
1R to 4M
500
500
RC70P
1.5
1R to 10M
500
700
See resistance
restrictions
Any value to order
60
Notes
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
70
-55 to +155
Physical Data
Dimensions (mm) and Weight (g)
PCB
mounting
d nom. centres
0.6
0.6
0.8
10.2
12.7
18.4
Min
Bend
Radius
0.6
0.6
1.2
Wt.
nom.
0.24
0.40
1.15
Type
RC55P
RC65P
RC70P
L Max
7.2
10.0
15.5
D Max
2.5
3.7
5.5
f min
30
30
30
d
D
L
f
Construction
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.
Termination wires are welded to the caps and the resistor is
protected with a specially formulated epoxy coating.
Marking
Type reference, TCR code, resistance value and tolerance
code. The resistance value marking conforms to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuits.
Terminations
Material
Strength
Solderability
Solder-coated copper wire.
The terminations meet the requirements of
IEC 68.2.21
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
General Note
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
Issue B · 03.02
© 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
176
WELWYN [ WELWYN COMPONENTS LIMITED ]
