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WK25L1602FTLV

Description
Fixed Resistor, Metal Glaze/thick Film, 2W, 16000ohm, 200V, 1% +/-Tol, 200ppm/Cel, Surface Mount, 1225, CHIP
CategoryPassive components    The resistor   
File Size483KB,8 Pages
ManufacturerWalsin Technology Corporation
Environmental Compliance
Download Datasheet Parametric View All

WK25L1602FTLV Overview

Fixed Resistor, Metal Glaze/thick Film, 2W, 16000ohm, 200V, 1% +/-Tol, 200ppm/Cel, Surface Mount, 1225, CHIP

WK25L1602FTLV Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerWalsin Technology Corporation
package instructionCHIP
Reach Compliance Codecompliant
Other featuresLASER TRIMMABLE
structureRECTANGULAR PACKAGE
Installation featuresSURFACE MOUNT
Number of terminals2
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package height0.55 mm
Package length6.3 mm
Package formSMT
Package width3.2 mm
method of packingTR, Plastic, 7 Inch
Rated power dissipation(P)2 W
Rated temperature70 °C
GuidelineAEC-Q200
resistance16000 Ω
Resistor typeFIXED RESISTOR
size code1225
surface mountYES
technologyMETAL GLAZE/THICK FILM
Temperature Coefficient200 ppm/°C
Terminal shapeWRAPAROUND
Tolerance1%
Operating Voltage200 V

WK25L1602FTLV Preview

Approval sheet
WK12L, WK20L, WK25L
1%, 5%
Thick Film Power Chip Resistor
Wide Termination
RoHS compliant and Halogen free
Size 0612, 1020, 1225
Automotive AEC Q200 Compliant
ASTM B-809-95 Compliant
*Contents in this sheet are subject to change without prior notice.
Page 1 of 8
WK12-20-25L_V_AUTO_V01
FEB - 2017
Approval sheet
FEATURE
1.
2.
3.
4.
5.
6.
High power rating and compact size
High reliability and stability
Reduced size of final equipment
RoHS compliant and Halogen free products
AEC Q200 Compliant
ASTM B-809-95 60’C 1000hrs compliant
APPLICATION
Power supply
PDA
Digital meter
Computer
Automotives
Battery charger
DC-DC power converter
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 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
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 at
longer sides. For ease of soldering the outer layer of these end terminations is Tin (lead free) alloy.
Fig 2. Construction of Chip-R
Page 2 of 8
WK12-20-25L_V_AUTO_V01
FEB - 2017
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
Size code
Resistance Tolerance
Resistance Range
TCR (ppm/C) :
Max. dissipation at T
amb
=70C
Max. Operation Voltage (DC or RMS)
Max. Overload Voltage (DC or RMS)
Climatic category (IEC 60068)
Note :
1.
2.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
200 ppm/C
3/4W
200V
400V
WK12L
0612(1632)
General Specification
WK20L
1020 ( 2550 ),
5%
(E24);
1%
(E24+E96)
1 ~ 1M,
200 ppm/C
1W
200V
400V
55/155/56
200 ppm/C
2W
200V
400V
WK25L
1225(3264)
RCWV
½
RatedPower
Resistance Value
or Max. RCWV listed above, whichever is lower.
MECHANICAL DATA (unit : mm)
TYPE
W
L
H
c
d
WK12L
3.200.20
1.600.20
0.550.10
0.500.25
0.500.25
WK20L
5.000.20
2.500.15
0.550.10
0.600.20
0.600.20
WK25L
6.300.20
3.200.20
0.550.10
0.600.20
0.600.20
Page 3 of 8
WK12-20-25L_V_AUTO_V01
FEB - 2017
Approval sheet
MARKING
Each resistor is marked with
value.
Example:
1R00
3901
1101
a four-digit code on the protective coating to designate the nominal resistance
=
=
=
1
3900
1100
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E96 & E24 series for resistors with a tolerance of
5%
&
1%.
The values of the E24/E96 series are in accordance with “IEC publication 60063”.
Derating curve
The power that the resistor can dissipate depends on the operating temperature; see Fig.3
Figure 3. 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.
Page 4 of 8
WK12-20-25L_V_AUTO_V01
FEB - 2017
Approval sheet
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 4.
Fig 4. Infrared soldering profile for Chip Resistors
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WK12
Size code
WK25 : 1225
WK20 : 1020
WK12: 0612
L
Type code
L : wide
termination
472_
Resistance code
5%
E24 : 2 significant
digits followed by no.
of zeros and a blank
4.7
10
=4R7_
=100_
J
Tolerance
J :
5%
F :
1%
P : Jumper
T
Packaging code
T : 7” Reel
taping
L
Termination
code
L
=
Sn base
(lead free)
V
Special code
V =
AEC Q200
Compliant +
ASTM B-809-
95 Compliant
1% E24+E96:
3 significant
digits followed by no.
of zeros
102
37.4K
=1020
=3742
Page 5 of 8
WK12-20-25L_V_AUTO_V01
FEB - 2017
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