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
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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
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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
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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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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.
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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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