WF12K499RCGL [WALSIN]
SMD Thick film resistor;型号: | WF12K499RCGL |
厂家: | Walsin Technology |
描述: | SMD Thick film resistor |
文件: | 总8页 (文件大小:489K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
WF12K, WF08K, WF06K, WF04K
1.0%, 0.5%, 0.25%, 0.1%
Thick film TC50
High Precision Thick Film chip resistors
Size 1206, 0805, 0603, 0402
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WFxxK_V02
Feb-2013
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 WFxxK
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WFxxK_V02
Feb-2013
QUICK REFERENCE DATA
Item
Series No.
General Specification
WF12K
WF08K
WF06K
WF04K
Size code
1206 ( 3216 )
0805 ( 2012 )
0603 ( 1608 )
0402 ( 1005 )
Resistance Tolerance
Resistance Range
1.0%, 0.5%, 0.25%, 0.1%
10 ~ 1M
100 ~ 1M
( E24 +E96 )
( E24 +E96 )
TCR (ppm/C)
50 ppm/C
1/4W
200V
400V
1/8W
150V
300V
1/10W
50V
1/16W
50V
Max. dissipation at Tamb=70C
Max. Operation Voltage (DC or RMS)
Max. Overload Voltage (DC or RMS)
100V
100V
Operation temperature
Note :
- 55 ~ +155’C
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 RatedPowerResistance Valueor Max. RCWV listed above, whichever is lower.
DIMENSIONS(unit : mm)
WF12K
WF08K
WF06K
WF04K
Type
3.10 0.10
1.60 0.10
0.50 0.20
0.45 0.20
0.60 0.15
2.00 0.10
1.25 0.10
0.40 0.20
0.40 0.20
0.50 0.15
1.60 0.10
0.80 0.10
0.30 0.10
0.30 0.15
0.45 0.10
1.00 0.05
0.50 0.05
0.20 0.10
0.25 0.10
0.35 0.05
L
W
A
B
t
Protective coat
t
End termination
B
Resistive layer
A
Ceramic Substrate
1001
T
W
L
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WFxxK_V02
Feb-2013
MARKING
3-digits marking for 0603 size
WFxxK has same marking rule as commodity ±1%.
3-digits marking(1% : 0603)
Nominal resistance
Description
1.E-24 series
2.E-96 series
As 0603 WR06X 5%.
The 1st two digit codes are referring to the CODE on the table, the 3rd code is the index of resistance
value :
Y=10-2,X=10-1,A=100,B=101,C=102,D=103,E=104,F=105
EX :
17.8Ω=25X,178Ω=25A,1K78 =25B
17K8=25C, 178K=25D, 1M78=25E
3. Remark
There is no marking for the items are not under E-24 and E-96 series
CODE R_value CODE R_value CODE R_Value CODE R_value CODE R_value CODE R_value CODE R_value CODE R_value
01
02
03
04
05
06
07
08
09
10
11
12
100
102
105
107
110
113
115
118
121
124
127
130
13
14
15
16
17
18
19
20
21
22
23
24
133
137
140
143
147
150
154
158
162
165
169
174
25
26
27
28
29
30
31
32
33
34
35
36
178
182
187
191
196
200
205
210
215
221
226
232
37
38
39
40
41
42
43
44
45
46
47
48
237
243
249
255
261
267
274
280
287
294
301
309
49
50
51
52
53
54
55
56
57
58
59
60
316
324
332
340
348
357
365
374
383
392
402
412
61
62
63
64
65
66
67
68
69
70
71
72
422
432
442
453
464
475
487
499
511
523
536
549
73
74
75
76
77
78
79
80
81
82
83
84
562
576
590
604
619
634
649
665
681
698
715
732
85
86
87
88
89
90
91
92
93
94
95
96
750
768
787
806
825
845
866
887
909
931
953
976
4-digits marking for 1206, 0805 size
Each resistor is marked with a four digits code on the protective coating to designate the nominal resistance
value of E24+E96. For values below 976 the R is used as a digit. For values of 100 or greater, the first 3
digits are significant, the fourth digit indicates the number of multiple to follow.
Example
RESISTANCE
10
12
100
6800
47000
10R0
12R0
1000
6801
4702
4-digits marking
No marking code for 0402 size
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WFxxK_V02
Feb-2013
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%, 0.25%, 0.1%. 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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Feb-2013
SOLDERING CONDITION
The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260C 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 235C during 2 seconds within lead-free solder bath. The
test condition for no leaching is 260C 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 .
WF08
Size code
K
xxxx
D
Tolerance
F : 1.0%
D : 0.5%
C: 0.25%
B : 0.1%
T
L
Type code
TCR 50ppm
Resistance code
E24+E192:
Packaging
code
Termination
code
WF12: 1206
WF08: 0805
WF06: 0603
WF04: 0402
T : 7” reel
G : 13” reel
L : lead free
R is first code followed by
3 significant digits.
E24: 39R0=>39R0
820R =>8200
E96: 49R9 =>49R9
499R =>4990
1. Reeled tape packaging: 8mm width paper taping.
for WF12, WF08, WF06, 5,000pcs/ 7” reel; 20kpcs/ 13” reel
for WF04, 10,000pcs/ 7” reel ; 70kpcs/ 13” reel
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WFxxK_V02
Feb-2013
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
<10@0.1V, <100@0.3V, <1K@1.0V,
<10K@3V, <100K@10V,<1M@25V,
<10M@30V
Temperature
Natural resistance change per change in degree Refer to “QUICK REFERENCE DATA”
centigrade.
Coefficient of
Resistance(T.C.R)
R2 R
R
1t2 t1
106 (ppm/C)
1
Clause 4.8
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 5second
application of a voltage 2.5 times RCWV or the
maximum overload voltage specified in the above
list, whichever is less.
R/R max. ±(0.5%+0.05)
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. ±(0.25%+0.05)
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 -55C3C, 2~3 minutes at
Clause 4.19
20°C+5°C-1°C, 30 minutes at +125C3C,
2~3 minutes at 20°C+5°C-1°C, total
continuous cycles
R/R max. ±(0.5%+0.05)
5
Load life (endurance)
Clause 4.25
70±2ºC, 1000 hours, loaded with RCWV or
Vmax,1.5 hours on and 0.5 hours off
R/R max. (1.0%+0.05)
R/R max. (1.0%+0.05)
Load life in Humidity
Clause 4.24
1000 hours, at rated continuous working voltage in
humidity chamber controller at 40C2C and
90~95% relative humidity, 1.5hours on and 0.5
hours off
Bending strength
Clause 4.33
Adhision
Resistors mounted on a 90mm glass epoxy resin
PCB(FR4); bending : 3 mm, once for 10 seconds.
R/R max. ±(0.5%+0.05)
Pressurizing force: 5N, Test time: 10±1sec.
No remarkable damage or removal of the
terminations.
Clause 4.32
Insulation Resistance
R≧10GΩ
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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Feb-2013
PACKAGING
Paper Tape specifications (unit :mm)
P0
F
D
Series No.
WF12
A
B
W
D
E
3.60±0.20
2.40±0.20
1.90±0.20
1.20±0.10
2.00±0.20
1.65±0.20
1.10±0.20
0.7±0.10
8.00±0.30
8.00±0.30
8.00±0.30
8.00±0.20
3.50±0.20
3.50±0.20
3.50±0.20
3.50±0.05
1.75±0.10
1.75±0.10
1.75±0.10
1.75±0.10
WF08
WF06
WF04
Series No.
WF12
F
P0
T
D
0.1
4.00±0.10
4.00±0.10
Max. 1.0
1.50
0.0
0.1
WF08
WF06
4.00±0.10
4.00±0.10
4.00±0.10
4.00±0.10
Max. 1.0
1.50
0.0
0.1
0.0
0.65±0.05
1.50
0.1
0.0
2.00±0.10
4.00±0.10
0.40±0.05
WF04
1.50
Reel dimensions
B
A
C
D
Symbol
A
B
C
D
7” reel
13.0±0.2
13.0±0.2
9.0±0.5
9.0±0.5
178.0±2.0
330.0±2.0
60.0±1.0
13” reel
100.0±1.0
Taping quantity
-
-
Chip resistors 5,000 pcs per 7” reel; 20,000 pcs per 13: reel ( WF12, WF08, WF06 )
Chip resistors 10,000 pcs per 7” reel; 70,000 pcs per 13” reel ( WF04 )
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WFxxK_V02
Feb-2013
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