RCMA
Vishay Sfernice
Molded Metal Film Very High Stability (< 0.25 % after 1000 h)
and Precision (up to 0.1 %) Resistors
FEATURES
•
0.1 W to 2 W at 70 °C
•
•
•
•
•
•
•
•
•
•
•
EN 140-201
CECC 40 100
RoHS
Very high stability: drift < 0.25 % after 1000 hours
COMPLIANT
Reduced total excursion: high initial precision (to ± 0.1 %)
with low temperature coefficient (down to ± 15 ppm/°C)
The models in this series are the first ones qualified by the
CNES for spatial applications (certificate N°4 dated
October 22, 1972)
Wide range ohmic values 1
Ω
to 5 MΩ
Accurate dimensions, high insulation and great
mechanical strength
High climatic performances: - 65 °C/+ 155 °C/56 days
Matching tolerance: 0.1 %
Tracking TCR: 5 ppm/°C
Termination: Pure Matte Tin
SERIES
DIMENSIONS
in millimeters
25 min.
A
25 min.
DIMENSIONS
A max.
Ø B max.
ØB
ØC
RCMA RCMA RCMA RCMA RCMA RCMA
02
05
08
1
2
4
6.7
2.5
0.6
0.26
10.4
4.2
0.6
0.46
16.5
6.4
0.8
1.3
19.3
6.4
0.8
1.5
29
10.2
0.8
4.4
54
10.2
0.8
13
ØC
Unit weight in g
TECHNICAL SPECIFICATIONS
VISHAY SFERNICE SERIES
NF C 83-230
CECC 40 100-803
Power Rating at 70 °C
Resistance
Value Range
in Relation to
- Tolerance
- Temperature
Coefficient
K3
± 0.2 %
± 0.5 % ± 1 %
± 0.1 % ± 0.2 %
± 0.5 % ± 1 %
± 0.1 % ± 0.2 %
± 0.5 % ± 1 %
10
Ω
1
Ω
10
Ω
1
Ω
10
Ω
10
Ω
RCMA 02
K4
RS58P
BE
0.125 W
332 kΩ 10
Ω
1 MΩ 1
Ω
332 kΩ 10
Ω
1 MΩ 1
Ω
332 kΩ 10
Ω
1 MΩ 10
Ω
RS63P
CE
0.250 W
332 kΩ 10
Ω
1 MΩ 1
Ω
332 kΩ 10
Ω
1 MΩ 1
Ω
332 kΩ 10
Ω
1 MΩ 10
Ω
RCMA 05
K4
RS68P
DE
0.500 W
1.5 MΩ 1
Ω
1 MΩ 10
Ω
1.5 MΩ 1
Ω
750 kΩ 10
Ω
1.5 MΩ 10
Ω
1 MΩ 10
Ω
RCMA 08
RCMA 1
-
-
0.75 W
1 MΩ 10
Ω
2 MΩ 1
Ω
1 MΩ 10
Ω
2 MΩ 1
Ω
750 kΩ 10
Ω
2 MΩ 10
Ω
RCMA 2
-
-
1W
1 MΩ 10
Ω
2.5 MΩ
1
Ω
1 MΩ 10
Ω
2.5 MΩ 1Ω
1 MΩ 10
Ω
2.5 MΩ 10
Ω
RCMA 4
-
-
2W
2.5 MΩ
5 MΩ
2.5 MΩ
5MΩ
2 MΩ
2.5 MΩ
K4
K5
Maximum Voltage
Critical Resistance
Temperature
Coefficient
rated in the range
- 55 °C/+ 155 °C
typical in the range
0 °C/+ 155 °C
300 V
720 kΩ
350 V
490 kΩ
K3
≤
± 50 ppm/°C
400 V
320 kΩ
500 V
333 kΩ
600 V
360 kΩ
K4
≤
± 25 ppm/°C
800 V
320 kΩ
K5
≤
± 15 ppm/°C
> 10
7
MΩ
0.0001 % Volt
- 65 °C/+ 155 °C/56 days
Insulation Resistance
Voltage Coefficient
Environmental Specifications
Undergoes European Quality Insurance System (CECC)
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31
For technical questions, contact: sfer@vishay.com
Document Number: 52009
Revision: 24-Jan-07
RCMA
Molded Metal Film Very High Stability (< 0.25 % after 1000 h)
Vishay Sfernice
and Precision (up to 0.1 %) Resistors
PERFORMANCE
CECC 40 100
TESTS
Load Life at max. Category Temperature
Short Time Overload
Damp Heat Humidity
(Steady State)
Rapid Temperature Change
Climatic Sequence
Terminal Strength
Vibration
Soldering (Thermal Shock)
Load Life
Shelf Life
EN 140-201
CONDITIONS STD 202
1000 h at 125 °C 50 % of Pn
2.5 Um/5 s
limited to 2 Un
56 days
with low load
- 55 °C
- 65 °C
+ 155 °C
+ 155 °C
REQUIREMENTS
≤
±1%
Insulation resist. > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resist. > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resist. > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (0.25 % + 0.05
Ω)
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resist. > 1 GΩ
-
TYPICAL VALUES
AND DRIFTS
± 0.25 % or 0.05
Ω
± 0.1 % or 0.05
Ω
± 0.2 % or 0.05
Ω
± 0.1 % or 0.05
Ω
± 0.25 % or 0.05
Ω
Insulation resist. 10
6
MΩ
± 0.05 % or 0.05
Ω
± 0.05 % or 0.05
Ω
± 0.05 % or 0.05
Ω
± 0.1 % or 0.05
Ω
± 0.1 % or 0.05
Ω
Pull - Twist - 2 bends
10 to 500 Hz
+ 260 °C 10 s
cycle 90’/30’
1000 h at Pn at 70 °C
1 year
ambient temperature
POWER RATING CHART
100
PRACTICAL OPERATING TOLERANCES
Table 2 and 3 show the basic characteristics and maximum
values under different stresses. In fact, the values and drifts
are maintained to within narrower limits.
K5
≤
± 10 ppm/°C
K4
≤
± 15 ppm/°C
1000 hours at Pr
10 000 hours
at Pr
± 0.05 %
± 0.15 %
% RATED POWER
Temperature coefficient
between - 10 °C and + 70 °C
50
LONG LIFE
90’/30’ cycles
ambient temperature 70 °C
So, in operation under the specified conditions (Pr at 70 °C)
the total drift (load life + TCR) of a RCMA K4 does not exceed
± 0.25 %.
0
0
30
50
70
100
125
150
AMBIENT TEMPERATURE IN °C
SPECIAL APPLICATIONS
Temperature coefficient tracking to 5 ppm/°C.
Tolerance matching to 0.05 %.
Selection of positive or negative TCR in temperature range
of - 20 °C to + 125 °C.
For these applications and other requirements consult
VISHAY SFERNICE.
TEMPERATURE RISE
HOT SPOT TEMPERATURE IN °C
40
MA
RC
4
30
M
RC
A2
20
R
C
M
A
1
10
0
0
0.5
1
1.50
2
RATED POWER IN WATT
Document Number: 52009
Revision: 24-Jan-07
For technical questions, contact: sfer@vishay.com
www.vishay.com
32
RCMA
Vishay Sfernice
Molded Metal Film Very High Stability (< 0.25 % after 1000 h)
and Precision (up to 0.1 %) Resistorss
MARKING
Printed: SFERNICE trademark, series, style (due to lack of space RCMA 02 is printed MA 02), ohmic value (in
Ω),
tolerance
(in %), temperature coefficient, manufacturing date.
ORDERING INFORMATION
RCMA
MODEL
02
SIZE
SPECIAL
DESIGN
Method N°
Optional
100K
OHMIC VALUE
1%
TOLERANCE
K6
TEMPERATURE
COEFFICIENT
AM500
PACKAGING
Ammo-pack:
Tape in a box or
tape and reel
e3
LEAD
(Pb)-FREE
SAP PART NUMBERING GUIDELINES
RCMA
MODEL
02
SIZE
10002
OHMIC VALUE
F
TOLERANCE
Y
TEMPERATURE
COEFFICIENT
A20
PACKAGING
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33
For technical questions, contact: sfer@vishay.com
Document Number: 52009
Revision: 24-Jan-07
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
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1
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