Precision Metal
Precision Metal
Precision Metal
Film Resistors
Film Resistors
Film Resistors
RC seriesseries
RC
RC series
CECC released products withwith low
CECC released products low
CECC over a wide resistance range
released a wide resistance
TCRsTCRs over products with lowrange
TCRs over tolerance down to 0.05%
Resistance a wide resistance range 0.05%
Resistance tolerance down to
Resistance tolerance down
Express delivery available to 0.05%
Express delivery available
Low noise and negligible voltage coefficient
Express delivery available
Low noise and negligible voltage coefficient
Screened parts available for critical applications
Low noise and negligible voltage coefficient
Screened parts available for critical
Temperature Coefficient of Resistance down to 5 ppm/°C
Screened parts available for critical
applications
Options for RoHS compliant and Lead bearing wire finishes
applications
·
·
·
·
·
·
·
Electrical Data
Electrical Data
Commercial
Commercial
rating at 70°C
Power
Power Resistance 0°C
rating at 7 range
RC55
watts
watts ohm
Resistanceitrangelement voltage ohm volts
Lim ing e
LimitinIsollemenvololtage
g eation t vtage
volts volts
IsolatioTCvo(tageo +70°C) & codesvoltppm/°C
n R l 20 t
s
ppm/°C
%
%
0.25
350
500
RC55
RC65
0.25
1R to 4M
1R to 4M 50
3
500
0.5
RC65
RC70
0.5
1R to 4M
1R to 4M350
350
500
1.0
RC70
Notes
1.0
1R to 10M
1R to 10M00
5
500
700
Notes
TCR (2Retsosta70°Ct)o& rcodes
0 i + nce le ance
Resistance tolerance
5 15(Y), 25(D), 50(C), 100(Z) 700
5(V), 10(T), 00
5(V), 10(T), 15(Y), 25(D), 50(C), 0.5(D) & 1(F)
0.05(W), 0.1(B), 0.25.(C), 100(Z)
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
K
0.25
0.25
10R to 1M
10R to 1M 50
2
250
350
K
L
L
0.5
0.510R to 1M
10R to 1M 50
3
350
500
See resistance
See resisrtestcie tions
anr c
restrictions
J
K
CECC 40101-004 Requirements
H
J
K
CECC 40101-004 Requirements
H
Power rating at 70°C
watts 0.063
0.125
0.25
Power Resistance 0°C
rating at 7 range
watts ohms63 to 1M 5 to 0.251R to 1M
0.0 1R 0.12 1R 1M
Resistanceitrangelement voltage ohms 1R lto 1M 200to 1M 200to 1M 250
1R
1R
Lim ing e
vo ts
LimitinIsollemenvololtage
g eation t vtage
volts vo200 280 00 280 50 350
2
2
lts
IsolatioTCvo&acodes
n R lt ge
voltppm/2C 0
s
280
350
°8
TCR & Resists nce tolerance (code)m/°C
code a
pp
Resistance tolerance (code)
%
%
350
500
15(Y), 25(D), 50(C), 100(Z)
15(Y), 25(D), 50(C), 100(Z)
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
B
B
0.25
C
0.25
10R to 1M
10R to 1M 50
2
250
350
C
0.5
0.510R to 1M
10R to 1M 50
3
350
500
See resistance
See resisrestcie tions
tanr c
restrictions
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
CECC 40101-804 Requirements
A
B
CECC 40101-804 Requirements
A
B
Power rating at 70°C
watts
0.125
0.25
Power Resistance 0°C
rating at 7 range
watts ohms .125 to 1M 0.251R to 1M
0 1R
Resistanceitrangelement voltage ohms vo1R to 1M200 1R to 1M250
Lim ing e
lts
LimitinIsollemenvololtage
g eation t vtage
IsolatioTCvo&acodes
n R lt ge
volts volts 200
voltppm/°C 280
s
280
250
350
350
TCR & Resists nce tolerance (code)m/°C
code a
pp
%
Resistance tolerance (code)
%
restrictions
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
These tables indicate the CECC specification requirements, and these are met or exceeded by the corresponding RC series products.
These tables indicate the CECC specification requirements, and these are met or exceeded by the corresponding RC series products.
Standard values
StandaTd eraluesimpedance
r h v mal
°C/watt
Thermal mbpedatnceperature ranC/watt
im ient em
° ge
A
°C
Ambient temperature range
°C
E24, E96 preferred
E24, E96 prefe7r0 d
re
7055 to +155
-
-55 to +155
60
350
500
15(Y), 25(D), 50(C), 100(Z)
15(Y), 25(D), 50(C), 100(Z)
0.05(W), 0.1(B), 0.25.(C), 0.5(D) & 1(F)
See resistance
See resisrestcie tions
tanr c
110
110
60
Any value
Any valuo order
te
to order
General
General Note Note
TT
Note
General
electronics reserves the right to make changes in product specification withoutor liability. liability.
TT electronics reserves the right to make changes in product specification without notice notice or
© TT electronics
© TT electronics plc plc
© TT electronics plc
All information is right to make changes in product and is considered accurate or liability.
TT electronics reserves thesubject to TT electronics’ own dataconsidered accurate at time at time ofto print. print.
All information is subject to TT electronics’ own data and is specification without notice of going going to
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
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2.14 07. 11
07. 11
Precision Metal
Precision Metal
Film Resistors
Film Resistors
RC series
RC series
Physical Data
Dimensions (mm) & Weight (g)
PCB
mounting
Type
RC55
RC65
RC70
L max
7.2
10.0
15.5
D max
2.5
3.7
5.5
f min
30
30
30
d nom
0.6
0.6
0.8
centres
10.2
12.7
18.4
Min.
Bend
Radius
0.6
0.6
1.2
Wt. nom
0.24
0.40
1.15
d
D
L
f
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.
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.
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.
Performance Data
CECC 40101-004 CECC 40101-804
Requirements
Load at commercial rating: 1000 hours at 70°C
Load at CECC rating: 1000 hours at 70°C
Dry heat: 1000 hours at 155°C
Shelf life: 12 months at room temperature
Derating from rated power at 70°C
Short term overload
Climatic
Climatic category
Long term damp heat
Temperature rapid change
Resistance to solder heat
Vibration and bump
Noise (in a decade of frequency)
Voltage coefficient of resistance
∆R%
∆R%
∆R%
∆R%
µV/V
ppm/V
∆R%
∆R%
∆
R%
∆R%
∆R%
∆R%
0.5
0.5
Not specified
Zero at 155°C
0.1
0.5
55/155/56
0.5
0.1
0.1
0.1
Not specified
Not specified
0.5
0.5
Not specified
50% at 125°C
0.1
0.5
55/125/56
0.5
0.1
0.1
0.1
Not specified
Not specified
Requirements
*Actual Performance
Maximum
0.3
0.3
**1.0
0.1
0.1
0.3
55/155/56
0.5
**0.2
0.06
0.06
1.0
0.1
0.05
0.03
0.02
0.1
<1
Typical
0.1
0.05
0.15
0.03
0.02
0.1
50% at 125°C & Zero at 155°C
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
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
© TT electronics plc
© TT electronics plc
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
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
2.14
07. 11
Precision Metal
Precision Metal
Film Resistors
RC series
RC series
Film Resistors
Table of Resistance Restrictions
Tolerance
TCR
ppm/°C
5
1
10
15
25
50
100
2
2
RC55
0.05%
10R to 1M
10R to 1M
10R to 1M
10R to 1M
10R to 1M
0.1 - 0.25%
10R to 1M
2R49 to 1M
2R49 to 2M
2R49 to 2M
1R to 2M
0.5%
3
- 1%
3
1R to 500K
1R to 1M
1R to 1M
1R to 2M
1R to 4M
1R to 4M
0.05%
10R to 1M
10R to 1M
10R to 1M
10R to 1M
10R to 1M
10R to 500K 10R to 500K
RC65
0.1 - 0.25%
10R to 1M
5R to 1M
5R to 2M
5R to 2M
1R to 2M
0.5%
3
- 1%
3
1R to 500K
1R to 1M
1R to 1M
1R to 2M
1R to 4M
1R to 4M
0.05%
10R to 1M
10R to 1M
10R to 1M
10R to 1M
10R to 1M
10R to 500K 10R to 500K
RC70
0.1 - 0.25% 0.5%
3
- 1%
3
10R to 1M
10R to 2M
10R to 5M
5R to 10M
1R to 10M
1R to 1M
1R to 2M
1R to 5M
1R to 10M
1R to 10M
10R to 750K 10R to 750K 10R to 750K
Note1:
1. Based on sampling. 100% screened product is available.
2. For maximum availability, where the ohmic value permits, 25ppm/˚C is preferred to 50 or 100ppm/˚C.
3. For maximum availability, where the ohmic value permits, 0.25% is preferred to 0.5% or 1%
Application Notes
Matched Sets and Networks
TT electronics has many years experience in the supply of
matched set of precision resistors.
Resistors can be supplied matched for tolerance and TCR
down to ±0.02% and ±2ppm/°C, either as separate resistors
or pre-assembled and encapsulated within a plastic box.
The individual resistors within a set or module can be
manufactured with a tolerance of ±0.05% and TCR of
±5ppm/°C.
A low inductance version is available in the range
5R0 to 1K0 at 1% tolerance. For low inductance
version add suffix N.
Packaging
RC55 and RC65 standard packing is in tape, as shown below,
whilst RC70 is bulk packed. Taped resistors on reel or loose
packed components can also be supplied by special request.
The standard packaging for RC65 and RC70 resistors is loose
in boxes. By special request the RC65 components can also be
supplied taped on reel or in ammo pack. In the case of tape
packed components the usable lead length is reduced by the
width of the tape.
5
f
1
6
52
f
2
6
Body location f
1
– f
2
≤
1.4 mm
General Note
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 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
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
© TT electronics plc
2.14
07. 11
Precision Metal
Film Resistors
RC series
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: RC55V-31K6BI
(RC55 with TCR ±5ppm/°C at 31.6 kilohms ±0.1%, Pb-free)
R
C
1
1
RC55
RC65
RC70
2
V = ±5
T = ±10
Y = ±15
D = ±25
C = ±50
Z = ±100
5
5
V
2
3
Value
-
3
1
3
K
6
B
4
4
Tolerance
I
5
5
Finish, Screening & Packing
Type TCR (ppm/°C)
Pb-free (RoHS)
E24 = 3/4 characters W = ±0.05% I
E96 = 4/5 characters B = ±0.1% SC Pb-free with screened TCR (5ppm only)
C = ±0.25% PB
Sn(95)Pb(5) finish
R = ohms
K = kilohms
D = ±0.5% HL
Sn(60)Pb(40) high lead finish
M = megohms
F = ±1%
All above in Standard Packing
RC55, 65
Ammo
Up to 1000/box
RC70
Bulk
250/box
USA (IRC) Part Number: RC55LFV3162BA
(RC55 with TCR ±5ppm/°C at 31.6 kilohms ±0.1%, Pb-free)
R
C
1
1
Type
RC55
RC65
RC70
2
Termination
Omit for
Sn(95)Pb(5)
LF = Pb-free
5
5
L
2
F
V
3
3
TCR (ppm/°C)
V = ±5
T = ±10
Y = ±15
D = ±25
C = ±50
Z = ±100
3
1
4
4
Value
6
2
B
5
A
6
5
Tolerance
A
RC55,
RC65
RC70
6
Packing
Ammo, up to
1000/box
Ammo, 250/box
3 digits + multiplier A = ±0.05%
B = ±0.1%
R = ohms for
values <100 ohms C = ±0.25%
D = ±0.5%
F = ±1%
General Note
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
2.14
