WT04X100_JTL [WALSIN]
Small size and light weight;型号: | WT04X100_JTL |
厂家: | Walsin Technology |
描述: | Small size and light weight |
文件: | 总7页 (文件大小:229K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Approval sheet
WT04X
±5%, Convex Type
10p8R Chip resistors network
Size 1206
*Contents in this sheet are subject to change without prior notice.
Page 1 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
FEATURE
1. Small size and light weight
2. Reduced size of final equipment
3. Lower surface mounted assembly costs
4. Higher component and equipment reliability
5. RoHS compliant and Lead free products
APPLICATION
•
•
Consumer electrical equipment
EDP, Computer application
DESCRIPTION
The resistors array is constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The
composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to
within tolerance by laser cutting of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
ease of soldering the outer layer of these end terminations is Tin (Pb free) alloy.
Fig 1. Consctruction of a Chip-R network WT04X
Page 2 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
General Specification
WT04X(Convex type)
1206 (3216)
±5% (E24 series)
10Ω ~ 100KΩ
≤ ± 200 ppm/°C
1/16 W
Size
Resistance Tolerance
Resistance Range
TCR (ppm/°C)
Max. dissipation at Tamb=70°C
Max. Operation Voltage (DC or RMS)
Max. overload voltage
Climatic category
25V
50V
55/155/56
Note :
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.
DIMENSIONS(unit : mm)
WT04X
L
W
T
3.30 ± 0.20
1.60 ± 0.15
0.55 ± 0.10
0.64 ± 0.05
0.50 ± 0.05
0.40 ± 0.15
0.40 ± 0.15
0.40 ± 0.15
P
A
B
C
G
Page 3 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
MARKING
3-digits marking
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance
value. For values up to 9.1 the R is used as a decimal point. For values of 10.0 or greater the first 2 digits
apply to the resistance value and third indicate the number of zeros to follow.
Example
RESISTANCE
10Ω
12Ω
100Ω
6800Ω
47000Ω
100
120
101
682
473
3-digits marking
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%,
The values of the E24 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
Circuit Mode
R1=R2=R3=R4=R6=R7=R8=R9
Page 4 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
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.
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. 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.
Fig 3. Infrared soldering profile for Chip Resistors network
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WT04
X
472_
Resistance code
J
T
L
Size code
Type code
Tolerance
J : ±5%
Packaging code
T : 7” Reel taping
Termination code
WT04 : 0402
per element
X : 8 elements,
convex
E24 : 2 significant digits followed
by no. of zeros and a blank
L
= Sn base (lead
free)
terminations,
common pin
p5/p10
4.7Ω
=4R7_
=100_
=221_
=000_
10Ω
220Ω
Jumper
(“_” means a blank)
Reeled tape packaging
: 8mm width paper taping 5000pcs per reel.
Page 5 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)
TEST
DC resistance
Clause 4.5
PROCEDURE
REQUIREMENT
DC resistance values measured at the test voltages specified Within the specified tolerance
below :
<10Ω@0.1V,
<10KΩ@3V,
<100Ω@0.3V,
<1KΩ@1.0V,
<100KΩ@10V, <1MΩ@25V, <10MΩ@30V
Temperature
Natural resistance change per change in degree centigrade.
Refer to
Coefficient of
Resistance(T.C.R)
“QUICK REFERENCE DATA”
R2 − R
×106 (ppm/°C) t1 : 20°C+5°C-1°C
1
R
(
t2 − t1
)
1
Clause 4.8
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
∆R/R max. ±(2%+0.10Ω)
Short time overload
(S.T.O.L)
Clause 4.13
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.
Resistance to
soldering heat(R.S.H)
Un-mounted chips completely immersed for 10±1second in a
SAC solder bath at 260℃±5ºC
no visible damage
∆ R/R max. ±(1.0%+0.05Ω)
Clause 4.18
Un-mounted chips completely immersed for 2±0.5 second in a good tinning (>95% covered)
Solderability
SAC solder bath at 235℃±5℃
no visible damage
Clause 4.17
Temperature cycling
Clause 4.19
30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 30 no visible damage
minutes at +155°C±3°C, 2~3 minutes at 20°C+5°C-1°C, total 5
∆R/R max. ±(1%+0.05Ω)
continuous cycles
1000 +48/-0 hours, loaded with RCWV or Vmax in chamber
controller 70±2ºC, 1.5 hours on and 0.5 hours off
Load life (endurance)
10Ω ~ 1MΩ : ∆R/R max.
±(3%+0.1Ω)
Clause 4.25
R<10Ω, R≥1MΩ : ∆R/R max.
±(5%+0.1Ω)
1000 +48/-0 hours, loaded with RCWV or Vmax in humidity
chamber controller at 40°C±2°C and 90~95% relative humidity,
1.5hours on and 0.5 hours off
Load life in Humidity
10Ω ~ 1MΩ : ∆R/R max.
±(3%+0.1Ω)
Clause 4.24
R<10Ω, R≥1MΩ : ∆R/R max.
±(5%+0.1Ω)
Pressurizing force: 5N, Test time: 10±1sec.
Adhesion
No remarkable damage or
removal of the terminations
Clause 4.32
Insulation Resistance
R≧10GΩ
Apply the maximum overload voltage (DC) for 1minute
Apply the maximum overload voltage (AC) for 1 minute
Clause 4.6
Dielectric Withstand
No breakdown or flashover
Voltage
Clause 4.7
Page 6 of 7
ASC_WT04X_V14
Apr.2010
Approval sheet
PACKAGING
Paper Tape specifications (unit :mm)
Series No.
WT04X
A
3.45 +0.20/-0
P1
B
1.85 +0.20/-0
P0
W
F
3.50±0.20
T
E
8.00±0.30
1.75±0.10
Series No.
ΦD
+0.1
−0.0
4.00±0.10
4.00±0.10
0.85±0.05
WT04X
Φ1.50
Reel dimensions
Symbol
(unit : mm)
A
B
C
D
13.0±0.2
9.0±0.5
Φ178.0±2.0
Φ60.0±1.0
Page 7 of 7
ASC_WT04X_V14
Apr.2010
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