Molded Metal Film High Stability (< 0.25 % after 1000 h)
High Temperature (up to 175 °C) Precision Resistors
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 52011
37 Revision: 24-Jan-07
RCMT
Vishay Sfernice
The performance of the RCMT resistors exceed the
requirements of NF C 83-230 standards. They are
particularly relevant to the more stringent military and
industrial applications especially when high ambient
temperatures such as + 175 °C are to be encountered.
The RCMT resistors are qualified and released to the
NF C UTE 83-230 standard styles RS56C, RS60E and C,
RS65E and C, RS70E and C.
FEATURES
•0.1 W to 2 W at 125 °C
•EN 140-100
•CECC 40 101-044
•High climatic performance - 65 °C/+ 175 °C/56 days
•High long term stability drift < 0.25 % after 1000 h
•Tight temperature coefficient to ± 15 ppm/°C
•Temperature coefficient tracking 5 ppm/°C
•Wide ohmic range from 1 Ω to 5 MΩ
•Tight tolerances up to ± 0.1 %
•Matching tolerance to 0.05 %
•Termination: Pure Matt Tin
DIMENSIONS in millimeters
ENVIRONMENTAL SPECIFICATIONS
Insulation Resistance > 107 MΩ
Voltage Coefficient 10 ppm/volt
Environmental Specifications - 65 °C/+ 175 °C/56 days
PRACTICAL OPERATING TOLERANCES
After the 10 000 hours load life test, at nominal power rating,
90'/30' cycles, + 125 °C ambient temperature, the total actual
drifts measured at + 125 °C are the following:
RoHS
COMPLIANT
25 min. 25 min.
A
Ø C
Ø B
SERIES
RCMT
01
RCMT
02
RCMT
05
RCMT
08
RCMT
1
RCMT
2
RCMT
4
DIMENSIONS
A max.
4.32 6.7 10.4 16.5 19.3 29 54
Ø B max.
2.03 2.5 3.66 6.4 6.4 10.2 10.2
Ø C
0.4 0.6 0.6 0.8 0.8 0.8 0.8
Unit weight in g
0.11 0.28 0.46 1.3 1.5 4.4 13
TEMPERATURE COEFFICIENT
TCR CODE TEMPERATURE RANGE
NOMINAL
TEMPERATURE
COEFFICIENT
TEMPERATURE RANGE
TYPICAL
TEMPERATURE
COEFFICIENT
K5 0 °C + 155 °C ± 15 ppm/°C 0 °C + 70 °C ± 10 ppm/°C
K4 - 55 °C + 175 °C ± 25 ppm/°C - 10 °C + 70 °C ± 15 ppm/°C
K3 - 55 °C + 175 °C ± 50 ppm/°C - 10 °C + 70 °C ± 30 ppm/°C
Manufacturing tolerance ± 0.1 % ± 1 %
Drift due to TCR (K4) + life drift ± 0.25 % ± 0.35 %
Max. total deviation from nominal
ohmic value, including the
manufacturing tolerance
± 0.35 % ± 1.35 %
RCMT
Molded Metal Film High Stability (< 0.25 % after 1000 h)
High Temperature (up to 175 °C) Precision Resistors Vishay Sfernice
Document Number: 52011 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 24-Jan-07 38
Undergoes European Quality Insurance System (CECC)
TECHNICAL SPECIFICATIONS
VISHAY
SFERNICE
SERIES
NF C
83-230
CECC 40
101-044
POWER
RATING
AT + 70 °C
POWER
RATING
AT + 125 °C
RESISTANCE VALUE RANGE IN RELATION TO
- TEMPERATURE COEFFICIENT
- TOLERANCE
MAXIMUM
VOLTAGE
CRITICAL
RESISTANCE
K3 K4 K5
± 0.2 % ± 0.5 %
± 1 %
± 0.1 %
± 0.2 %
± 0.5 %
± 1 %
± 0.1 %
± 0.2 %
± 0.5 %
± 1 %
RCMT 01
K3
-
0.063 W 0.05 W 10
Ω
511 k
Ω
1
Ω
511 k
Ω
49.9
Ω
100 k
Ω
49.9
Ω
511 k
Ω
100
Ω
100 k
Ω
100
Ω
100 k
Ω
200 V
-
RCMT 01
K4
-
RCMT 02
K3
RS
56C 0.125 W 0.1 W 10
Ω
332 k
Ω
1
Ω
332 k
Ω
10
Ω
332 k
Ω
1
Ω
332 k
Ω
10
Ω
100 k
Ω
10
Ω
332 k
Ω
300 V
-
RCMT 02
K4
RS
56E
RCMT 05
K3
RS
60C 0.25 W 0.125 W 10
Ω
332 k
Ω
1
Ω
1 M
Ω
10
Ω
332 k
Ω
1
Ω
1 M
Ω
10
Ω
332 k
Ω
10
Ω
1 M
Ω
350 V 980 k
Ω
RCMT 05
K4
RS
60E
RCMT 08
K3
RS
65C 0.5 W 0.25 W 10
Ω
1 M
Ω
1
Ω
1.5 M
Ω
10
Ω
1 M
Ω
1
Ω
1.5 M
Ω
10
Ω
750 k
Ω
10
Ω
1.5 M
Ω
400 V 640 k
Ω
RCMT 08
K4
RS
65E
RCMT 1
K3
RS
70C 1 W 0.5 W 10
Ω
1 M
Ω
1
Ω
2 M
Ω
10
Ω
1 M
Ω
1
Ω
2 M
Ω
10
Ω
750 k
Ω
10
Ω
2 M
Ω
500 V 500 k
Ω
RCMT 1
K4
RS
70E
RCMT 2
K3
-
2 W 1 W 10
Ω
1 M
Ω
1
Ω
2.5 M
Ω
10
Ω
1 M
Ω
1
Ω
2.5 M
Ω
10
Ω
1 M
Ω
10
Ω
2.5 M
Ω
600 V 360 k
Ω
RCMT 2
K4
-
RCMT 4
K3
-
4 W 2 W 10
Ω
2.5 M
Ω
1
Ω
5 M
Ω
10
Ω
2.5 M
Ω
1
Ω
5 M
Ω
10
Ω
2 M
Ω
10
Ω
2.5 M
Ω
800 V 320 k
Ω
RCMT 04
K4
-
POWER RATING CHART TEMPERATURE RISE
AMBIENT TEMPERATURE IN DEGREES CELSIUS
% RATED POWER
100
50
0
0 25 50 70 100 125 150 175
RATED POWER IN WATT
HOT SPOT TEMPERATURE IN °C
40
30
20
10
001
RCMT4
RCMT 2
RCMT 1
RCMT02
0.5 1.50 2
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 52011
39 Revision: 24-Jan-07
RCMT
Vishay Sfernice Molded Metal Film High Stability (< 0.25 % after 1000 h)
High Temperature (up to 175 °C) Precision Resistors
NOISE LEVEL
In a frequency decade, the average noise level is 0.1 µV/V
for models RCMT08, RCMT1, RCMT2 and RCMT4 in all
ohmic values. It progressively increases as a function of the
ohmic value and can reach 0.2 µV/V for the highest values of
models RCMT02 and RCMT05 (0.1 µV/V for R < 10 kΩ).
SPECIAL APPLICATIONS
Temperature coefficient tracking to 5 ppm.
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.
RECOMMENDATION
The lower the ohmic value, the more important the influence
of lead resistance is on measurements. The nominal
resistance value is therefore measured at a distance of 5 mm
from resistor body.
MARKING
Printed: series, style, NF style if applicable, ohmic value
(in Ω), tolerance (in %), temperature coefficient,
manufacturing date.
Due to lack of space, RCMT 02 is referenced as MT 02.
PERFORMANCE
EN 140-100 - CECC 40 101-044 TYPICAL VALUES
AND DRIFTS
TESTS CONDITIONS REQUIREMENTS
Dielectric Voltage 2 Un/1 mn ± 0.25 % < ± 0.05 % or 0.05 Ω
Short Time Overload 2.5 Um/5 s
limited to 2 Un ± 0.25 % ± 0.05 % or 0.05 Ω
Load Life at maximum Category
Temperature
1000 h at + 155 °C
0 % of Pr ± 0.5 % ± 0.25 % or 0.05 Ω
Damp Heat Humidity
(Steady State)
56 days
with low load ± 0.5 % ± 0.2 % or 0.05 Ω
Insulation resist. > 106 MΩ
Rapid Temperature Change - 55 °C + 175 °C ± 0.1 % ± 0.05 % or 0.05 Ω
Climatic Sequence - 65 °C + 175 °C
severity 1
± 0.5 %
Insulation resist. > 103 MΩ
± 0.2 % or 0.05 Ω
Insulation resist. > 106 MΩ
Terminal Strength Pull - Twist - 2 bends ± 0.1 % ± 0.05 % or 0.05 Ω
Vibration Severity 55 B ± 0.1 % ± 0.05 % or 0.05 Ω
Soldering (Thermal Shock) + 260 °C 10 s ± 0.1 % ± 0.05 % or 0.05 Ω
Load Life 1000 h at Pn ± 0.5 % ± 0.15 % or 0.05 Ω
10 000 h at Pn - ± 0.25 % or 0.05 Ω
Shelf Life 1 year ambient temperature - < ± 0.05 %
ORDERING INFORMATION
RCMT 02 100K 1 % K6 AM500 e3
MODEL SIZE SPECIAL
DESIGN
Method N°
Optional
OHMIC VALUE
TOLERANCE TEMPERATURE
COEFFICIENT
PAC K AG I NG
Optional
LEAD
(Pb)-FREE
SAP PART NUMBERING GUIDELINES
RCMT 02 10002 F Y A20
MODEL SIZE OHMIC VALUE TOLERANCE TEMPERATURE
COEFFICIENT
PA CK A G I N G
cycle 90’/30’
70 °C ambient
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
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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
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Customers using or selling these products for use in such applications do so at their own risk and agree to fully
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