RCMA
www.vishay.com
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
• EN140-201
• According to CECC 4101-803
• Very high stability: drift < 0.25 % after 1000 h
• Reduced total excursion: high initial precision (to ± 0.1 %)
with low temperature coefficient (down to ± 15 ppm/°C)
• Wide range ohmic values 1
Ω
to 5 MΩ
• Accurate dimensions,
mechanical strength
• Matching tolerance: 0.1 %
• Tracking TCR: 5 ppm/°C
• Termination: pure matte tin
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
high
insulation
and
great
• High climatic performances: -65 °C / +155 °C / 56 days
DIMENSIONS
in millimeters
SERIES
25 min.
A
25 min.
A max.
6.7
10.4
16.5
19.3
29
54
Ø B max.
2.5
4.2
6.4
6.4
10.2
10.2
ØC
0.6
0.6
0.8
0.8
0.8
0.8
WEIGHT in g
0.26
0.46
1.3
1.5
4.4
13
RCMA02
RCMA05
RCMA08
RCMA1
ØB
ØC
RCMA2
RCMA4
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
RCMA02
RCMA05
RCMA08
RCMA1
RCMA2
RCMA4
RESISTANCE
RANGE
Ω
1 to 1M
1 to 1M
1 to 1.5M
1 to 2M
1 to 2.5M
1 to 5M
RATED POWER
P
70 °C
W
0.125
0.250
0.500
0.75
1.0
2.0
LIMITING ELEMENT
VOLTAGE
V
300
350
400
500
600
800
TOLERANCE
±%
0.1, 0.2, 0.5, 1
0.1, 0.2, 0.5, 1
0.1, 0.2, 0.5, 1
0.1, 0.2, 0.5, 1
0.1, 0.2, 0.5, 1
0.1, 0.2, 0.5, 1
TEMPERATURE
COEFFICIENT
± ppm/°C
15, 50
15, 50
15, 50
15, 25
15, 25
15, 25
Revision: 27-Jul-2021
Document Number: 52009
1
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RCMA
www.vishay.com
TECHNICAL SPECIFICATIONS
VISHAY SFERNICE SERIES
NF C 83-230 (for information)
Power rating at 70 °C
± 0.2 %
Resistance
value range
in relation to
- tolerance
- temperature
coefficient
K3
± 0.5 % ± 1 %
± 0.1 % ± 0.2 %
K4
± 0.5 % ± 1 %
± 0.1 % ± 0.2 %
K5
± 0.5 % ± 1 %
Maximum voltage
Critical resistance
Rated in the range
-55 °C to +155 °C
Typical in the range
0 °C to +155 °C
RCMA02
K4
RS58P
0.125 W
RCMA05
K4
RS63P
0.250 W
RCMA08
RS68P
0.500 W
10
Ω
to 1 MΩ
1
Ω
to 1.5 MΩ
10
Ω
to 1 MΩ
1
Ω
to 1.5 MΩ
RCMA1
-
0.75 W
10
Ω
to 1 MΩ
1
Ω
to 2 MΩ
10
Ω
to 1 MΩ
1
Ω
to 2 MΩ
RCMA2
-
1W
10
Ω
to 1 MΩ
1
Ω
to 2.5 MΩ
10
Ω
to 1 MΩ
1
Ω
to 2.5 MΩ
RCMA4
-
2W
10
Ω
to 2.5 MΩ
1 W to 5 MΩ
10
Ω
to 2.5 MΩ
1Ω to 5 MΩ
Vishay Sfernice
10
Ω
to 332 kΩ 10
Ω
to 332 kΩ
1
Ω
to 1 MΩ
1
Ω
to 1 MΩ
10
Ω
to 332 kΩ 10
Ω
to 332 kΩ
1
Ω
to 1 MΩ
1
Ω
to 1 MΩ
10
Ω
to 332 kΩ 10
Ω
to 332 kΩ 10
Ω
to 750 kΩ 10
Ω
to 750 kΩ
10
Ω
to 1 MΩ
300 V
720 kΩ
10
Ω
to 1 MΩ
350 V
490 kΩ
K3
≤
± 50 ppm/°C
K5
≤
± 15 ppm/°C
> 10
7
MΩ
0.0001 %/V
-65 °C / +155 °C / 56 days
10
Ω
to 1.5 MΩ
400 V
320 kΩ
10
Ω
to 2 MΩ
500 V
333 kΩ
10
Ω
to 100 kΩ 10
Ω
to 100 kΩ
600 V
360 kΩ
K4
≤
± 25 ppm/°C
800 V
320 kΩ
Temperature
coefficient
Insulation resistance
Voltage coefficient
Environmental specifications
PERFORMANCE
TESTS
Load life at
maximum 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
CONDITIONS
1000 h at 125 °C 50 % of
P
n
2.5 Un / 5 s
Limited to 2 Um
56 days
with low load
-55 °C to +155 °C
-65 °C to +155 °C
Pull - twist - 2 bends
10 Hz to 500 Hz
+260 °C 10 s
Cycle 90’/30’
1000 h at
P
n
at 70 °C
1 year
ambient temperature
REQUIREMENTS
≤
±1%
Insulation resistance > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resistance > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resistance > 1 GΩ
≤
± (0.25 % + 0.05
Ω)
≤
± (0.25 % + 0.05
Ω)
≤
± (0.25 % + 0.05
Ω)
≤
± (1 % + 0.05
Ω)
Insulation resistance > 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 resistance 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
Revision: 27-Jul-2021
Document Number: 52009
2
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RCMA
www.vishay.com
POWER RATING
100
Vishay Sfernice
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.
Temperature coefficient
between -10 °C and +70 °C
K5
≤
± 10 ppm/°C
K4
≤
± 15 ppm/°C
1000 h at
P
r
10 000 h at
P
r
± 0.05 %
± 0.15 %
RATED POWER IN %
50
LONG LIFE
90’/30’ cycles
ambient temperature 70 °C
0
0
30
50
70
100
125
150
So, in operation under the specified conditions (P
r
at 70 °C)
the total drift (load life + TCR) of a RCMA K4 does not
exceed ± 0.25 %.
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.
TEMPERATURE RISE
50
HOT SPOT TEMPERATURE IN °C
40
M
RC
A4
For these applications and other requirements consult
Vishay Sfernice.
30
A2
CM
R
MARKING
Printed: Vishay Sfernice trademark, style (due to lack of
space RCMA02 is printed MA02), ohmic value (in
Ω),
tolerance (in %), temperature coefficient, manufacturing
date.
20
R
C
M
A
1
10
0
0
0.5
1
1.5
2
RATED POWER IN W
GLOBAL PART NUMBER INFORMATION
R
C
M
A
0
2
1
3
0
0
1
F
H
S
1
4
GLOBAL
MODEL
RCMA
SIZE
02
05
08
10
20
40
SPECIAL
As applicable.
Contact us.
OHMIC VALUE
The first four digits are
significant figures and the
last digit specifies the
number of zeros to follow.
R designates decimal point.
13001
= 13 kΩ
33001
= 33 kΩ
220R0
= 220
Ω
1R220
= 1.22
Ω
TOLERANCE
B
= 0.1 %
A
= 0.2 %
D
= 0.5 %
F
=1%
TEMPERATURE
COEFFICIENT
H
= K3, 50 ppm/K
E
= K4, 25 ppm/K
D
= K5, 15 ppm/K
PACKAGING
AM500 =
A20
BAG100 =
S14
BAG50 =
S09
BAG10 =
S03
BO50* =
B25
*: possible in
N/A
Revision: 27-Jul-2021
Document Number: 52009
3
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
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Statements regarding the suitability of products for certain types of applications are based on Vishay's knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer's responsibility to validate that a particular product
with the properties described in the product specification is suitable for use in a particular application. Parameters provided in
datasheets and / or specifications may vary in different applications and performance may vary over time. All operating
parameters, including typical parameters, must be validated for each customer application by the customer's technical experts.
Product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited
to the warranty expressed therein.
Hyperlinks included in this datasheet may direct users to third-party websites. These links are provided as a convenience and
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© 2021 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 09-Jul-2021
1
Document Number: 91000
电机驱动控制（Motor Control）
