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RCMA
Vishay Sfernice
Molded Metal Film Very High Stability and Precision Resistors
FEATURES
* * * * * * * 0.1W to 2W at 70C NF C 83-230 CECC 40 100 Very high stability: drift <0.1% after 1000 hours Reduced total excursion: high initial precision (to 0.1%) with low temperature coefficient (down to 15ppm/C) High reliability These models of this series have been the first ones qual ified by the CNES for spatial applications (certificate N4 dated October 22, 1972) Wide range ohmic values 1 to 5M Accurate dimensions, high insulation and great mechanical strength High climatic performances: - 65C/+ 155C/56 days Matching tolerance: 0.1% Tracking T.C.: 5ppm/C
* * * * *
DIMENSIONS in millimeters
25 min. A 25 min.
SERIES DIMENSIONS A max. O B max. RCMA 02 RCMA 05 RCMA 08 RCMA 1 6.7 2.5 0.6 0.26 10.4 3.66 0.6 0.46 16.5 6.4 0.8 1.3 19.3 6.4 0.8 1.5 RCMA 2 29 10.2 0.8 4.4 RCMA 4 54 10.2 0.8 13
OB
OC
OC Unit weight in g
TECHNICAL SPECIFICATIONS
VISHAY SFERNICE SERIES NF C 83-230 CECC 40 100-803 Power Rating at 70C 0.2% K3 Resistance 0.5% 1% Value Range 0.1% 0.2% in Relation to K4 - Tolerance 0.5% 1% - Temperature 0.1% 0.2% Coefficient K5 0.5% 1% Maximum Voltage Critical Resistance rated in the range Temperature - 55C/+ 155C Coefficient typical in the range 0C/+ 155C Insulation Resistance Voltage Coefficient Environmental Specifications RCMA 02 RS58P K4 RCMA 05 RS63P K4 RCMA 08 RS68P DE 0.500W 10 1M 1 1.5M 10 1M 1 1.5M 10 750k 10 1.5M 400V 320k RCMA 1 - - 0.75W 10 1M 1 2M 10 1M 1 2M 10 750k 10 2M 500V 333k RCMA 2 - - 1W 10 1M 1 2.5M 10 1M 1 2.5M 10 1M 10 2.5M 600V 360k K4 25ppm/C K5 15ppm/C > 107M 0.0001% Volt - 65C/+ 155C/56 days RCMA 4 - - 2W 10 2.5M 1 5M 10 2.5M 1 5M 10 2M 10 2.5M 800V 320k
BE 0.125W 10 332k 1 1M 10 332k 1 1M 10 332k 10 1M 300V 720k
CE 0.250W 10 332k 1 1M 10 332k 1 1M 10 332k 10 1M 350V 490k K3 50ppm/C
Undergoes European Quality Insurance System (CECC)
Document Number: 52009 Revision 25-Jul-02
For technical questions, contact sfer@vishay.com
www.vishay.com 31
RCMA
Vishay Sfernice
PERFORMANCE
NF C 83-230 - 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 - 55C - 65C CONDITIONS STD 202 1000 h at 125C 50% of Pn 2.5 Um/5 s limited to 2 Un 56 days with low load + 155C + 155C REQUIREMENTS 1% Insulation resist. >1G (0.25% + 0.05) (1% + 0.05) Insulation resist. >1G (0.25% + 0.05) (1% + 0.05) Insulation resist. >1G (0.25% + 0.05) (0.25% + 0.05) (0,25% + 0.05) (1% + 0.05) Insulation resist. > 1G - TYPICAL VALUES AND DRIFTS 0.25% or 0.05 0.1% or 0.05 0.2% or 0.05 0.1% or 0.05 0.25% or 0.05 Insulation resist. 106M 0.05% or 0.05 0.05% or 0.05 0.05% or 0.05 0.1% or 0.05 0.1% or 0.05
Molded Metal Film Very High Stability and Precision Resistors
Pull - Twist - 2 bends 10 to 500Hz + 260C 10 s cycle 90'/30' 1000 h at Pn at 70C 1 year ambient temperature
POWER RATING CHART
100
PRACTICAL OPERATING TOLERANCES
Tables 2 and 3 show the basic characteristics and max. values under different stresses. In fact, the values and drifts are maintained to within narrower limits.
Temperature coefficient between - 10C and + 70C LONG LIFE 90'/30' cycles ambient temperature 70C K5 10ppm/C K4 15ppm/C 1000 hours at Pr 10.000 hours at Pr 0.05% 0.15%
% RATED POWER
50
So, in operation under the specified conditions (Pr at 70C) the total drift (load life + T.C.) of a RCMA K4 does not exceed 0.25%.
0
0
30
50
70
100
125
150
SPECIAL APPLICATIONS
Temperature coefficient tracking to 5ppm/C. Tolerance matching to 0.05%. Selection of positive or negative T.C. in temperature range of - 20C to + 125C.
AMBIENT TEMPERATURE IN DEGREES CELSIUS
TEMPERATURE RISE
HOT SPOT TEMPERATURE IN C
40
M RC
A4
For these applications and other requirements consult VISHAY SFERNICE.
30
RC MA
2
20
RC M
A1
10
0
0
0.5
1 RATED POWER IN WATT
1.50
2
www.vishay.com 32
For technical questions, contact sfer@vishay.com
Document Number: 52009 Revision 25-Jul-02
RCMA
Molded Metal Film Very High Stability and Precision Resistors
MARKING
Printed: SFERNICE trademark, series, style (due to lack of space RCMA 02 is printed MA 02), ohmic value (in ), tolerance (in %), temperature coefficient, manufacturing date.
Vishay Sfernice
ORDERING INFORMATION
RCMA 02 100k 0.1% K5 AMMO-PACK
SERIES
STYLE
SPECIAL DESIGN Method N Optional
OHMIC VALUE
TOLERANCE
TEMPERATURE COEFFICIENT
PACKAGING Ammo-pack: Tape in a box or tape and reel
Document Number: 52009 Revision 25-Jul-02
For technical questions, contact sfer@vishay.com
www.vishay.com 33
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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