Resistors
Precision Metal
Film Resistors
Precision Metal Film Resistors
RC series
RC series
CECC released products with low TCRs over a wide resistance range
s CECC released products with low
Resistance tolerance down to 0.05%
TCRs over a wide resistance range
Express delivery available
Resistance tolerance down to 0.05%
s
Low noise and negligible voltage coefficient
Express delivery available
s
Screened parts available for critical applications
Low noise and negligible voltage coefficient
Temperature Coefficient of Resistance down to 5 ppm/C
s
Options for RoHS compliant and Lead bearing wire finishes
Screened parts available for critical
s
applications
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
RC55 RC65 RC70 Notes
Commercial
Power rating at 70C watts 0.25 0.5 1.0
Resistance range ohm
1R to 4M 1R to 4M 1R to 10M
Limiting element voltage volts 350 350 500
Isolation voltage volts 500 500 700
TCR (20 to +70C) & codes ppm/C 5(V), 10(T), 15(Y), 25(D), 50(C), 100(Z) See resistance
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
Resistance tolerance % restrictions
J K
CECC 40101-004 Requirements H K L
Power rating at 70C watts 0.063 0.125 0.25 0.25 0.5
Resistance range ohms 1R to 1M 1R to 1M 1R to 1M 10R to 1M 10R to 1M
Limiting element voltage volts 200 200 250 250 350
Isolation voltage volts 280 280 350 350 500
TCR & codes ppm/C See resistance
15(Y), 25(D), 50(C), 100(Z)
Resistance tolerance (code) % restrictions
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
B C
CECC 40101-804 Requirements A B
Power rating at 70C watts 0.125 0.25 0.25 0.5
Resistance range ohms 1R to 1M 1R to 1M 10R to 1M 10R to 1M
Limiting element voltage volts 200 250 250 350
Isolation voltage volts 280 350 350 500
TCR & codes ppm/C See resistance
15(Y), 25(D), 50(C), 100(Z)
Resistance tolerance (code) % 0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F) restrictions
These tables indicate the CECC specification requirements, and these are met or exceeded by the corresponding RC series products.
Standard values E24, E96 preferred Any value
Thermal impedance C/watt 110 70 60 to order
Ambient temperature range C -55 to +155
General Note
General Note
BI Technologies IRC Welwyn
TT electronics reserves the right to make changes in product specication without notice or liability.
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics own data and is considered accurate at time of going to print.
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
Precision Metal
Precision Metal
Film Resistors
Film Resistors
RC series
RC series
Physical Data
Dimensions (mm) & Weight (g)
PCB Min.
mounting Bend
1
Type L max D max f min d nom centres Radius Wt. nom
d
RC55 7.2 2.5 30 0.6 10.2 0.6 0.24
D
L
f
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
Note 1 - dimension relates only to bulk packed product.
Marking
Construction
Type reference, TCR code, resistance value and
A metal film is deposited onto a high quality ceramic former.
tolerance code.
Nickel-plated steel caps are force fitted to the former and
termination wires are welded to the caps.
The resistance values conform to IEC 62.
The resistor is adjusted to value by a helical cut in the film
Solvent Resistance
and the body is protected with a specially formulated epoxy
The body protection and marking are resistant to all normal
coating.
industrial cleaning solvents suitable for printed circuits.
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.
Performance Data
CECC 40101-004 CECC 40101-804 *Actual Performance
Requirements Requirements Maximum Typical
Load at commercial rating: 1000 hours at 70C R% 0.3 0.1
Load at CECC rating: 1000 hours at 70C R% 0.5 0.5 0.3 0.05
Dry heat: 1000 hours at 155C R% 0.5 0.5 **1.0 0.15
Shelf life: 12 months at room temperature R% Not specified Not specified 0.1 0.03
50% at 125C & Zero at 155C
Derating from rated power at 70C Zero at 155C 50% at 125C
Short term overload R% 0.1 0.1 0.1 0.02
Climatic R% 0.5 0.5 0.3 0.1
Climatic category 55/155/56 55/125/56 55/155/56
Long term damp heat R% 0.5 0.5 0.5 0.1
Temperature rapid change R% 0.1 0.1 **0.2 0.05
Resistance to solder heat R% 0.1 0.1 0.06 0.03
Vibration and bump R% 0.1 0.1 0.06 0.02
Noise (in a decade of frequency) V/V Not specified Not specified 1.0 0.1
Voltage coefficient of resistance ppm/V Not specified Not specified <1
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.
General Note
BI Technologies IRC Welwyn
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
TT electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
All information is subject to TT electronics own data and is considered accurate at time of going to print.