CRCW....-37 e3
Vishay
Lead (Pb)-Free Thick Film, Rectangular Chip Resistors
www.vishay.com For technical questions, contact: filmresistors.thickfilmchip@vishay.com Document Number: 20045
1Revision: 28-May-08
FEATURES
•High pulse performance (time/power)
•Metal glaze on high quality ceramic
•Protective overglaze
•Lead (Pb)-free solder contacts on Ni barrier layer
•Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
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
Notes:
(1)
For 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.
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
SIZE POWER RATING
P70 °C
W
RATED
VOLTAGE
V
TEMPERATURE
COEFFICIENT
ppm/K
TOLERANCE
%
RESISTANCE
RANGE
Ω
E-SERIES
INCH METRIC
CRCW1206-37 1206 3216 0.25 200
± 200 ± 10 5R1 to 10M E24CRCW1210-37 1210 3225 0.33 200
CRCW2512-37 2512 6332 1.0 500
TECHNICAL SPECIFICATIONS
PARAMETER UNIT CRCW1206-37 CRCW1210-37 CRCW2512-37
Rated Dissipation at P70 (2) W 0.25 0.33 1.0
Rated Voltage Umax. AC/DC V 200 200 500
Insulation Voltage Uins (1 Min) V > 300
Thermal Resistance (1) K/W ≤ 220 ≤ 140 ≤ 65
Category Temperature Range
°
C - 55 to + 155
Weight mg 10 16 40.5
CRCW....-37 e3
Lead (Pb)-Free Thick Film, Rectangular Chip Resistors Vishay
Document Number: 20045 For technical questions, contact: filmresistors.thickfilmchip@vishay.com www.vishay.com
Revision: 28-May-08 2
Notes:
(1) Preferred way for ordering products is by use of the PART NUMBER
(2) Please refer to table PACKAGING, see below
PART NUMBER AND PRODUCT DESCRIPTION
PART NUMBER: CRCW120622K0KNEA37 (1)
MODEL VALUE TOLERANCE TCR PACKAGING (2) SPECIAL
CRCW1206
CRCW1210
CRCW2512
R = Decimal
K = Thousand
M = Million
K = ± 10 % N = ± 200 ppm/K EA
EB
EC
EG
EH
EI
EL
Up to 2 digits
37 = Non-trimmed
PRODUCT DESCRIPTION: D25/CRCW1206-37 200 22K0 10 % ET1 e3
D25/CRCW1206 200 22K0 10 % ET1 e3
MODEL TCR RESISTANCE VALUE TOLERANCE VALUE PA CK A G I NG (2) LEAD (Pb)-FREE
CRCW1206
CRCW1210
CRCW2512
± 200 ppm/K 10R = 10 Ω
562R = 562 Ω
10K = 10 kΩ
1M = 1 MΩ
± 10 % ET1
ET5
ET6
E67
E82
EG1
E20
e3 = Pure tin
termination
finish
PACKAGING
MODEL
REEL
TAPE
WIDTH DIAMETER PITCH PIECES/
REEL
PACKAGING CODE
PART NUMBER PRODUCT DESC.
PAPER BLISTER PAPER BLISTER
CRCW1206-37 8 mm
180 mm/7" 4 mm 5000 EA EI ET1 EG1
285 mm/11.25" 4 mm 10 000 EB ET5
330 mm/13" 4 mm 20 000 EC EL ET6 E20
CRCW1210-37 12 mm
180 mm/7" 4 mm 5000 EA ET1
285 mm/11.25" 4 mm 10 000 EB ET5
330 mm/13" 4 mm 20 000 EC ET6
CRCW2512-37 12 mm 180 mm/7"
8 mm 2000 EG E67
4 mm 4000 EH E82
C R C W 1 2 0 6 2 2 K 0 K N E A 3 7
www.vishay.com For technical questions, contact: filmresistors.thickfilmchip@vishay.com Document Number: 20045
3Revision: 28-May-08
CRCW....-37 e3
Vishay Lead (Pb)-Free Thick Film, Rectangular Chip Resistors
DIMENSIONS
FUNCTIONAL PERFORMANCE
SIZE DIMENSIONS [in millimeters] SOLDER PAD DIMENSIONS [in millimeters]
REFLOW SOLDERING WAVE SOLDERING
INCH METRIC L W H T1 T2 a b l a b l
1206 3216 3.2 + 0.10
- 0.20 1.6 ± 0.15 0.55 ± 0.05 0.45 ± 0.2 0.4 ± 0.2 0.9 1.7 2.0 1.1 1.7 2.3
1210 3225 3.2 ± 0.2 2.5 ± 0.2 0.55 ± 0.05 0.45 ± 0.2 0.4 ± 0.2 0.9 2.5 2.0 1.1 2.5 2.2
2512 6332 6.3 ± 0.2 3.15 ± 0.15 0.6 ± 0.1 0.6 ± 0.2 0.6 ± 0.2 1.0 3.2 5.2 1.2 3.2 5.2
Pulse Power (W)
Maximum pulse dissipation as a function of the pulse duration for one.pulse loading of CRCW...-37 resistors
Pulse Duration (s)
10 000
1000
100
10
1
10-1
10-2
10-6 10-5 10-1
10-2
10-3
10-4 100110
- 55 - 25 0 25 50 75 100 125 155 175
120
100
80
60
40
20
0
70
DeratingAmbient Temperature in °C
Rated Power in %
CRCW....-37 e3
Lead (Pb)-Free Thick Film, Rectangular Chip Resistors Vishay
Document Number: 20045 For technical questions, contact: filmresistors.thickfilmchip@vishay.com www.vishay.com
Revision: 28-May-08 4
TEST PROCEDURES AND REQUIREMENTS
EN 60115-1
TEST (clause) CONDITIONS OF TEST
REQUIREMENTS
STABILITY CLASS 2 OR BETTER
Stability for product types:
5.1 Ωto 10 MΩ
CRCW....-37
Resistance
(4.5) - ± 10 %
Temperature coefficient
(4.8.4.2)
20/- 55/20 °C and
20/125/20 °C ± 200 ppm/K
Overload
(4.13)
U = 2.5 x (P70 x R)1/2
≤ 2 x Umax.;
Duration: according the style
± (0.25 % R + 0.05 Ω)
Solderability
(4.17.5)
Aging 4 h at 155 °C, dryheat
solder bath method; 235 °C; 2 s
visual examination
Good tinning (≥ 95 % covered)
no visible damage
Resistance to soldering heat (4.18.2) Solder bath method;
(260 ± 5) °C; (10 ± 1) s ± (0.25 % R + 0.05 Ω)
Rapid change of temperature (4.19) 30 min at LCT = - 55 °C;
30 min at UCT = 125 °C; 5 cycles ± (0.25 % R + 0.05 Ω)
Damp heat, steady state
(4.24)
(40 ± 2) °C; 56 days;
(93 ± 3) % RH ± (1 % R + 0.05 Ω)
Climatic sequence
(4.23)
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 = (P70 × R)1/2
U = Umax.; whichever is less severe
± (1 % R + 0.05 Ω)
Endurance at 70 °C
(4.25.1)
U = (P70 × R)1/2
U = Umax.; whichever is less severe
1.5 h ON; 0.5 h OFF;
70 °C; 1000 h
± (1 % R + 0.05 Ω)
Extended endurance
(4.25.1.8) Duration extended to 8000 h ± (2 % R + 0.1 Ω)
Endurance at upper category temperature
(4.25.3) UCT = 125 °C; 1000 h ± (1 % R + 0.05 Ω)
APPLICABLE SPECIFICATIONS
• EN 60115-1 Generic Specification
• EN 140400 Sectional Specification
• EN 140401-802 Detail Specification
• IEC 60068-2-X Variety of environmental test procedures
• IEC 60286-3 Packaging of SMD components
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Revision: 12-Mar-12 1Document Number: 91000
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