CRCW....-37
Vishay
Lead (Pb)-Bearing Thick Film, Rectangular Chip Resistors
FEATURES
•
High pulse performance (time/power)
•
Metal glaze on high quality ceramic
•
Protective overglaze
•
Lead (Pb)-bearing solder contacts on Ni barrier layer
STANDARD ELECTRICAL SPECIFICATIONS
SIZE
MODEL
INCH METRIC
CRCW1206-37
CRCW1210-37
CRCW2512-37
Notes:
•
These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over
operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime
•
Marking and packaging: see appropriate catalog or web pages
•
Power rating depends on the max. temperature at the solder point, the component placement density and the substrate material
1206
1210
2512
3216
3225
6332
POWER RATING
P
70 °C
W
0.25
0.33
1.0
RATED
VOLTAGE
V
200
200
500
± 200
± 10
5R1 to 10M
E24
TEMPERATURE TOLERANCE RESISTANCE
RANGE
E-SERIES
COEFFICIENT
%
Ω
ppm/K
TECHNICAL SPECIFICATIONS
PARAMETER
Rated Dissipation at
P
70 (2)
Rated Voltage
U
max.
AC/DC
Insulation Voltage
U
ins
(1 Min)
Thermal Resistance
(1)
Category Temperature Range
Weight
Notes:
(1)
For
UNIT
W
V
V
K/W
°C
mg
CRCW1206-37
0.25
200
CRCW1210-37
0.33
200
> 300
CRCW2512-37
1.0
500
≤
220
≤
140
- 55 to + 155
≤
65
10
16
40.5
size 1206 the measuring conditions are in acc. to EN 140401-802. For all other sizes the result depends on the solder pad dimensions.
(2)
The
power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support of the
printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature of 155 °C is not exceeded.
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For technical questions, contact: filmresistors.thickfilmchip@vishay.com
Document Number: 20044
Revision: 28-May-08
CRCW....-37
Lead (Pb)-Bearing Thick Film, Rectangular Chip Resistors
Vishay
TEST PROCEDURES AND REQUIREMENTS
EN 60115-1
REQUIREMENTS
TEST (clause)
CONDITIONS OF TEST
STABILITY
CLASS 2
OR BETTER
5.1
Ω
to 10 MΩ
± 10 %
± 200 ppm/K
±
(0.25
%
R
+ 0.05
Ω)
Stability for product types:
CRCW....-37
Resistance
(4.5)
Temperature coefficient
(4.8.4.2)
Overload
(4.13)
Solderability
(4.17.5)
Resistance to soldering heat (4.18.2)
Rapid change of temperature (4.19)
Damp heat, steady state
(4.24)
-
20/- 55/20 °C and
20/125/20 °C
U
= 2.5 x (P
70
x
R)
1/2
≤
2 x
U
max.
;
Duration: according the style
Aging 4 h at 155 °C, dryheat
solder bath method; 235 °C; 2 s
visual examination
Solder bath method;
(260 ± 5) °C; (10 ± 1) s
30 min at LCT = - 55 °C;
30 min at UCT = 125 °C; 5 cycles
(40 ± 2) °C; 56 days;
(93 ± 3) % RH
16 h at UCT = 125 °C; 1 cycle at 55 °C;
2 h at LCT = - 55 °C;
1 h/1 kPa at 15 °C to 35 °C;
5 cycles at 55 °C
U
= (P
70
×
R)
1/2
U
=
U
max.
; whichever is less severe
U
= (P
70
×
R)
1/2
U
=
U
max.
; whichever is less severe
1.5 h ON; 0.5 h OFF;
70 °C; 1000 h
Duration extended to 8000 h
UCT = 125 °C; 1000 h
Good tinning (≥ 95 % covered)
no visible damage
±
(0.25
%
R
+ 0.05
Ω)
±
(0.25
%
R
+ 0.05
Ω)
±
(1
%
R
+ 0.05
Ω)
Climatic sequence
(4.23)
±
(1
%
R
+ 0.05
Ω)
Endurance at 70 °C
(4.25.1)
Extended endurance
(4.25.1.8)
Endurance at upper category temperature
(4.25.3)
±
(1
%
R
+ 0.05
Ω)
± (2 %
R
+ 0.1
Ω)
±
(1
%
R
+ 0.05
Ω)
APPLICABLE SPECIFICATIONS
• EN 60115-1
• EN 140400
• EN 140401-802
• IEC 60068-2-X
• IEC 60286-3
Generic Specification
Sectional Specification
Detail Specification
Variety of environmental test procedures
Packaging of SMD components
Document Number: 20044
Revision: 28-May-08
For technical questions, contact: filmresistors.thickfilmchip@vishay.com
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4
Legal Disclaimer Notice
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Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“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.
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the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
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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.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
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