Data sheet E 4/6.826 -
10497
RCK
02-02A
04
05-05A
06
very high precision
and stability
metal foil resistor
– bulk metal
®
5 W to 1,5 W
to 70°C
NF C/UTE 83-220
CECC 40300
CECC 40302-001
BS CECC 40302-004
MIL-R-55182J
ESA/SCC 4001 011
The ultra-high precision planar resistors of the RCK series are produced
according to a special process.
The technology used is unique and based on an etched nickel-chromium foil
bonded on to an alumina substrate.
The resistor’s small size (thickness 2,5 mm) enables compact side by side
mounting on a 2,54 mm PCB grid and their unmatched performances
make them particularly well suited for all military and high performance
applications.
q
VERY TIGHT TOLERANCE ±0,005 % to ±1%
Matching to 0,01%
q
VERY LOW TEMPERATURE COEFFICIENT
typical
≤
+3 ppm/°C (–55°C to +155°C) ±1 ppm/°C (0°C to +60°C)
tracking to 0,5 ppm/°C
q
ELECTRICAL INSULATION >10
6
MΩ
q
VERY HIGH STABILITY < 25 ppm/year or <50 ppm/3 years (shelf life)
q
NEGLIGIBLE RISE TIME approx. 1-10
-9
s.
q
CLIMATIC CATEGORY
CECC : –55°C / +155°C / 56 days
RCK 02 : –55°C / +175°C / 56 days
RCK02 - RS92 N
RCK04
VIEW A A’
Fig. 1
Fig. 2
RCK05
RCK06
Dimensions in mm
Fig. 3
Undergoes European Quality Insurance System (CECC)
European Space Agency approved
Fig. 4
SPECIFICATIONS
MECHANICAL...
MECHANICAL PROTECTION... insulated case
RESISTIVE ELEMENT... nickel-chromium
TERMINAL LEADS... tinned copper
weldable solderable
type C MIL-STD 1276
UNIT WEIGHT... 0,3 - 1 - 2 - 4 g
ENVIRONMENTAL...
TEMPERATURE LIMITS... –55°C + 175°C
CLIMATIC CATEGORY... 55 / 155 / 56
CHARACTERISTICS PER RESISTOR
SERIES
POWER RATING
IN RELATION TO
OHMIC VALUES
AND AMBIENT TEMPERATURE
+0,005 %
TOLERANCES +0,02 %
+ 0,01 %
IN RELATION
TO
+0,05 %
OHMIC VALUES
+0,1 % ± 0,2%
+0,5 % ± 1 %
LIMITING ELEMENT VOLTAGE
CRITICAL RESISTANCE AT +70°C
TEMPERATURE COEFFICIENT
RCK 02 / RS 92N
80,6
Ω
to 120 kΩ
0,5 W at +70°C
0,25 W at +125°C
RCK 02 / 02A
1
Ω
to 100 kΩ
0,6 W at +70°C
0,3 W at +125°C
101 kΩ to 250 kΩ
0,2 W at +125°C
25
Ω
12
Ω
25
Ω
80,6
Ω
to 120 kΩ
5
Ω
2
Ω
2
Ω
200 V
80 kΩ
± 5 ppm/°C
250 kΩ
250 kΩ
250 kΩ
250 kΩ
250 kΩ
250 kΩ
RCK 04
1
Ω
to 200 kΩ
1 W at +70°C
0,5 W at +125°C
201 kΩ to 500 kΩ
0,3 W at +125°C
30
Ω
10
Ω
20
Ω
5
Ω
1
Ω
500 kΩ
500 kΩ
500 kΩ
500 kΩ
500 kΩ
RCK 05 / 05A
1
Ω
to 300 kΩ
1,5 W at +70°C
0,75 W at +125°C
301 kΩ to 750 kΩ
0,4 W at +125°C
30
Ω
10
Ω
20
Ω
5
Ω
1
Ω
750 kΩ
750 kΩ
750 kΩ
750 kΩ
750 kΩ
RCK 06
0,5
Ω
to 400 kΩ
2 W at +70°C
1 W at +125°C
401 kΩ to 1 MΩ
0,5 W at +125°C
30
Ω
1 MΩ
40
Ω
1 MΩ
20
Ω
1 MΩ
5
Ω
1 MΩ
1
Ω
1 MΩ
0,5
Ω
1 MΩ
500 V
281,6 kΩ
ELECTRICAL...
RESISTANCE VALUE RANGE...
RESISTANCE TOLERANCE...
POWER RATING...
TEMPERATURE COEFFICIENT...
DIELECTRIC VOLTAGE...
INSULATION RESISTANCE...
THERMAL RESISTANCE...
THERMAL EMF...
NOISE...
1
Ω
... 1 MΩ
± 0,005% to ± 1%
0,25 W... 2 W
see diagram
fig. 6 and fig. 7
750 V RMS
> 10
6
MΩ
0,14°C/mW
< 0,5 µV for 1°C of
difference between leads
non measurable (> –32dB)
Table 1
–
300 V
180 kΩ
350 V
122,5 kΩ
350 V
208,3 kΩ
See diagram fig. 6 and fig. 7
POWER RATING CHART
Fig. 5
POWER RATING
RCK 06
2
RATED POWER IN WATT
RCK 05
In order to increase stability, it is recommended to reduce the
nominal power (Pr) in relation with tolerance.
For ± 0,1% to ±0,05% Power = Pr x 0,75
For ± 0,02% to ±0,01% Power = Pr x 0,5
For ± 0,005%
Power = Pr x 0,25.
NOISE
1,5
RCK 04
< 0,025 µV/V RMS (> –32 dB).
HIGH FREQUENCY CHARACTERISTICS
1
RCK 02
0,5
RS92N
Very low reactance.
Shunt capacitance is approximately 1 pF
Total inductance is approximately 100 nH
175
0
0
25
50
70
100
125
150
AMBIENT TEMPERATURE IN DEGREES CELSIUS
RISE TIME
Approximately 1 nanosecond.
Allows very high performance in the field of very fast electro-
nics (totally oscillation-free).
TEMPERATURE COEFFICIENTS
RCK...
+100
max.
0
DRIFT
∆R/R
in ppm
DRIFT
∆R/R
in ppm
+ 200
typical
-100
typical
-200
-300
-400
-500
-55
-20
-0
+25
+60
+100
+125
AMBIENT TEMPERATURE IN DEGREES CELSIUS
min.
Fig. 6
RCK... S 223
+ 300
max.
Fig. 7
+100
0
min.
-100
-55
-20
-0
+25
+60
+100
+125
AMBIENT TEMPERATURE IN DEGREES CELSIUS
PERFORMANCES
REQUIREMENTS
TESTS
CONDITIONS
2,5 un / 5 s
U max. < 2 Un
–55°C +155°C 5 cycles
CEI 68-2-14 Test Na
CEI 68-2-21
Test Ua (pulling) Ub (bending)
Uc (twisting)
260°C/10 s
CEI 68-2-20A Test Tb (met. 1A)
10 Hz to 500 Hz
0,75 mm or 10 g 6 h met. B4
CEI 68-2-6 Test Fc
–55°C +155°C
6 cycles 95% R.H. 85 mbar
CEI 68-1
56 days 95% R.H. 40°C
CEI 68-2-3
Method 106
MIL-STD-202
1000 h Pr at 70°C
90’/30’ cycle
1000 h/155°C CEI 68-2-20A
Test B
100 h/175°C Sfernice RCK 02
NF C 83-220
CECC 40300
± 0,01 %
± 0,01 %
± 0,01 %
± 0,01 %
± 0,01 %
± 0,05 %
Insulation R>10
2
MΩ
± 0,05 %
Insulation R>10
2
MΩ
–
± 0,05 %
± 0,05 %
–
MIL-R-55182J
± 0,2 %
± 0,05 %
± 0,2 %
± 0,1 %
± 0,2 %
Table 2
TYPICAL
DRIFTS
± 0,002 %
± 0,002 %
± 0,002 %
± 0,002 %
± 0,002 %
± 0,003 %
Insulation R>10
4
MΩ
± 0,003 %
Insulation R>10
4
MΩ
OVERLOAD
TEMPERATURE CYCLING
TERMINALS STRENGTH
RESISTANCE TO SOLDERING HEAT
VIBRATIONS
CLIMATIC SEQUENCE
HUMIDITY (STEADY STATE)
MOISTURE RESISTANCE
LOAD LIFE
HIGH TEMPERATURE EXPOSURE
–
–
± 0,02 %
± 0,4 %
Insulation R>10
2
MΩ Insulation R>10
4
MΩ
± 0,5 %
± 0,5 %
± 0,5 %
± 0,05 %
± 0,01 %
± 0,05 %
TYPICAL RESISTANCE DRIFT DIAGRAMS
Temperature cycles
(5 cycles from –55°C to +155°C)
49,5%
Humidity
(56 days at 95% H.R. 40°C)
Load life
(0,33 W at 125°C for 1000 hours)
22,6%
19,3%
42,15%
23%
24,15%
12%
4,5 %
5,3%
1,7%
–250 –200 –150 –100 –50
0
+50 +100 +150
2,24 %
–60
–40
–20
0
+20
∆R
10
–6
R
–10
0 +10
+30
+50
+70
∆R
10
–6
R
∆R
10
–6
R
GENERAL APPLICATIONS
MARKING
Discrete components :
any circuits requiring high precision
and high stability, standard resistors, fast rise time applica-
tions, high stability applications even under severe tempera-
ture variations, circuits for analog computers, etc.
Resistor networks :
ladder networks (R-2R), Kelvin-Varley
dividers, current source networks, any type of voltage divi-
ders, etc.
SFERNICE trademark (except 02 style), series, style, NF
style if applicable, nominal resistance (in
Ω,
kΩ), tolerance
(in %), manufacturing date.
ORDERING PROCEDURE
SERIES
STYLE
OPTION
OHMIC VALUE
TOLERANCE
RCK
02
A
32 kΩ
±0,005%
VISHAY S.A.
International Department
199, Boulevard de la Madeleine
B.P. 1159
F 06003 NICE CEDEX 1
Tel. : (33) 04 93 37 27 27
Fax. : (33) 04 93 37 27 26
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