WK04K4990DAL [WALSIN]
SMD Thick film resistor;型号: | WK04K4990DAL |
厂家: | Walsin Technology |
描述: | SMD Thick film resistor |
文件: | 总7页 (文件大小:205K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
WK12K, WK08K, WK06K, WK04K, WK02K
±1.0%, ±0.5%
Thick Film TC50/TC100
High Precision Thick Film chip resistors
Size 1206, 0805, 0603, 0402, 0201
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FEATURE
1. SMD Thick film resistor
2. High reliability and stability
3. High performance of TCR: 50 ppm/K
4. High precision
5. RoHS compliant & Lead free
APPLICATION
•
•
•
•
•
Medical equipment
Measuring instrument
Communication device
Computer
Printer
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive layer that is applied to the top surface of the substrate. The
composition of the resistive layer is adjusted to give the approximate resistance required and the value is
trimmed to nominated value within tolerance which controlled by laser trimming of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
environmental soldering issue, the outer layer of these end terminations is a Lead-free solder .
Fig 1. Construction of Chip-R WKxxK
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QUICK REFERENCE DATA
Item
General Specification
WK06K
Series No.
WK12K
WK08K
WK04K
WK02K
Size code
1206 ( 3216 )
0805 ( 2012 )
0603 ( 1608 )
0402 ( 1005 )
0201 ( 0603 )
Resistance Tolerance
±1.0%, ±0.5% ( E24 +E96 )
3.3 ~ 9.76Ω: 100ppm
Resistance Range/
TCR (ppm/°C)
3.3 ~ 9.76Ω:
50ppm
3.3 ~ 9.76Ω:
50ppm
10 ~ 97.6Ω:
51 ~ 976Ω:
100ppm
100ppm
10 ~ 97.6Ω: 100ppm
10Ω ~ 4.7MΩ:
50ppm-
10Ω ~ 3.3MΩ:
50ppm
100Ω ~ 1MΩ:
1KΩ ~ 1MΩ:
100Ω ~ 1MΩ: 50ppm
1.02~3.3MΩ: 100ppm
50ppm
50ppm
1.02~3.3MΩ:
100ppm
Max. dissipation at
Tamb=70°C
1/4W
200V
400V
1/8W
150V
300V
1/10W
50V
1/16W
50V
1/20W
25V
Max. Operation
Voltage (DC or RMS)
Max. Overload Voltage
(DC or RMS)
100V
100V
50V
Climatic category
Note :
55/125/56
1.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
2.
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV = RatedPower ×Resistance Value or Max. RCWV listed above, whichever is lower.
3.
Green color overcoat.
DIMENSION (unit : mm)
WK12K
WK08K
WK06K
WK04K
WK02K
Type
3.20 ± 0.15
1.60 ± 0.15
0.60 ± 0.10
0.50 ± 0.25
0.50 ± 0.25
2.00 ± 0.10
1.25 ± 0.10
0.60 ± 0.10
0.40 ± 0.20
0.40 ± 0.20
1.60 ± 0.10
1.00 ± 0.05
0.50 ± 0.05
0.60 ± 0.03
0.30 ± 0.03
0.23 ± 0.03
0.10 ± 0.05
0.15 ± 0.05
L
W
t
0.80 +0.15/-0.05
0.45 ± 0.10
0.25 ± 0.10
0.30 ± 0.10
0.35 ± 0.05
0.20 ± 0.10
A
B
0.25 +0.05/-0.10
Protective coat
t
End termination
B
Resistive layer
A
Ceramic Substrate
101
W
L
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MARKING
Each resistor is marked with 3 digits for E24 and 4 digits for E96 on the protective coating to designate the
nominal resistance value of E24 and E96.
0603 size has only marking with 3 digits for E24 and no marking for E96 !
0402/ 0201 size has no marking !
Example
RESISTANCE
MARKING
100Ω
562KΩ
51.1Ω
101
5623
51R1
ꢀ
No marking code for 0402/ 0201 size
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24 & E96 series for resistors with a tolerance of
±1.0%, ±0.5%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.
Derating
The power that the resistor can dissipate depends on the operating temperature; see Fig.2
Figure 2. Maximum dissipation in percentage of rated power
As a function of the ambient temperature
MOUNTING
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems.
Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).
Electrical connection to the circuit is by individual soldering condition.
The end terminations guarantee a reliable contact.
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SOLDERING CONDITION
The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260°C for 10
seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete
components on the reverse (mixed PCBs).
Surface Mount Resistors are tested for solderability at 235°C during 2 seconds within lead-free solder bath. The
test condition for no leaching is 260°C for 30 seconds. Typical examples of soldering processes that provide
reliable joints without any damage are given in Fig 3.
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WK12
Size code
K
4990
Resistance code
E24+E96:
D
T
L
Type code
Tolerance
F : ±1.0%
D : ±0.5%
Packaging code Termination
code
WK12: 1206
WK08: 0805
WK06: 0603
WK04: 0402
WK02: 0201
TCR
T : 7” Reeled
50ppm/100ppm
L : lead free
First 3 significant digits
represent resistance code
and followed by number of
zero.
A : 7” Reeled
15kpcs
E24: 39R0=>39R0
820R =>8200
E96: 49R9 =>49R9
499R =>4990
1. Reeled tape packaging: 8mm width paper taping.
5,000pcs/reel for WK12, WK08, WK06;
10,000pcs/reel for WK04,
15,000pcs/reel for WK02
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TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)
REQUIREMENT
Resistor
TEST
PROCEDURE
DC resistance
DC resistance values measured
Within the specified tolerance
Clause 4.5
<10Ω@0.1V, <100Ω@0.3V, <1KΩ@1.0V,
<10KΩ@3V, <100KΩ@10V,<1MΩ@25V,
<10MΩ@30V
Temperature
Coefficient of
Natural resistance change per change in degree Refer to “QUICK REFERENCE DATA”
centigrade.
Resistance(T.C.R)
R2 − R
×106 (ppm/°C)
1
Clause 4.8
R
(
t2 − t1
)
1
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
t1 : 20°C+5°C-1°C
Short time overload
(S.T.O.L)
Permanent resistance change after a 2 second
application of a voltage 2.5 times RCWV or the
maximum overload voltage specified in the above
list, whichever is less.
∆R/R max. ±(1.0%+0.05Ω)
Clause 4.13
Resistance to soldering
heat(R.S.H)
Clause 4.18
Un-mounted chips completely immersed for no visible damage
10±1second in a SAC solder bath at 260℃±5ºC
∆ R/R max. ±(1.0%+0.05Ω)
Solderability
Un-mounted chips completely immersed for 2±0.5 good tinning (>95% covered)
second in a SAC solder bath at 235℃±5℃
Clause 4.17
no visible damage
Temperature cycling
no visible damage
30 minutes at -55°C±3°C, 2~3 minutes at
20°C+5°C-1°C, 30 minutes at +125 °C±3°C,
Clause 4.19
∆R/R max. ±(1.0%+0.05Ω)
2~3 minutes at 20°C+5°C-1°C, total
continuous cycles
5
Load life (endurance)
70±2ºC, 1000 hours, loaded with RCWV or
Vmax,1.5 hours on and 0.5 hours off
∆R/R max. ±(5.0%+0.1Ω)
No visual damage
Clause 4.25
Load life in Humidity
1000 hours, at rated continuous working voltage in
humidity chamber controller at 40°C±2°C and 95%
relative humidity, 1.5hours on and 0.5 hours off
∆R/R max. ±(5.0%+0.1Ω)
No visual damage
Clause 4.24
Endurance at high
temperature
∆R/R max. ±(5.0%+0.1Ω)
125°C, no load, 1000hours
No visual damage
Clause 4.25
Bending strength
Clause 4.33
Adhesion
Resistors mounted on a 90mm glass epoxy resin
PCB(FR4); bending : 3 mm, once for 10 seconds.
∆R/R max. ±(1.0%+0.05Ω)
Pressurizing force: 5N, Test time: 10±1sec.
No remarkable damage or removal of the
terminations.
Clause 4.32
Insulation Resistance
R≧1GΩ
Apply the maximum overload voltage (DC) for
1minute
Clause 4.6
Dielectric Withstand
Apply the maximum overload voltage (AC) for 1 No breakdown or flashover
minute
Voltage
Clause 4.7
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PACKAGING
Paper Tape specifications (unit :mm)
P0
F
D
Series No.
WK12
A
B
W
D
E
3.60±0.20
2.50±0.20
1.90±0.20
1.15+0.05/-0.1
0.37±0.05
2.00±0.15
1.65±0.15
1.15±0.15
0.65±0.10
0.67±0.05
8.00±0.30
8.00±0.30
8.00±0.30
8.00±0.20
8.00±0.20
3.50±0.05
3.50±0.05
3.50±0.05
3.50±0.05
3.50±0.05
1.75±0.10
1.75±0.10
1.75±0.10
1.75±0.10
1.75±0.10
WK08
WK06
WK04
WK02
Series No.
WK12
F
P0
T
ΦD
+0.1
4.00±0.10
4.00±0.10
Max. 1.0
Φ1.50
−0.0
+0.1
WK08
WK06
4.00±0.10
4.00±0.10
4.00±0.10
4.00±0.10
Max. 1.0
Max. 0.8
Φ1.50
−0.0
+0.1
−0.0
Φ1.50
+0.1
2.00±0.10
2.00±0.10
4.00±0.10
4.00±0.10
WK04
Max. 0.5
Max. 0.5
Φ1.50
−0.0
+0.1
−0.0
WK02
Φ1.50
Reel dimensions
B
A
C
D
Symbol
(unit : mm)
A
B
C
D
13.0±0.2
9.0+1/-0
Φ180+0/-1.5
Φ60.0+1/-0
Taping quantity
-
-
Chip resistors 5,000 pcs per reel ( WK12, WK08, WK06 )
Chip resistors 10,000 pcs per reel ( WK04 ); 15,000pcs per reel (WK02)
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