WSLF Resistors Datasheet

WSLF Datasheet, PDF, Equivalent


Part Number

WSLF

Description

Power Metal Strip Resistors

Manufacture

Vishay

Total Page 4 Pages
Datasheet
Download WSLF Datasheet


WSLF
www.vishay.com
WSLF
Vishay Dale
Power Metal Strip® Resistors,
Low Value (Down to 0.0003 ), Surface-Mount
ADDITIONAL RESOURCES
3D 3D
3D Models
Design Tools
FEATURES
• Power Metal Strip® all-welded construction is
ideal for all types of current sensing, voltage
division, and pulse applications
• Solid metal nickel-chrome, manganese-copper,
or manganese-copper-tin alloy resistive
element with low TCR (< 20 ppm/°C)
• Proprietary processing technique produces
extremely low resistance values, down to
0.0003
• Sulfur resistance by construction that is
unaffected by high sulfur environments
• Very low inductance (< 2 nH)
• Low thermal EMF (< 3 μV/°C)
• AEC-Q200 qualified (1)
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
Notes
• Follow link to “Overview of Automotive Grade Products” for
more details: www.vishay.com/doc?49924
(1) Flame retardance test may not be applicable to some resistor
technologies
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
SIZE
POWER
RATING
P70 °C (1)
W
POWER
RATING
P100 °C (2)
W
TOLERANCE
%
2512
6.0
3.0
1.0, 5.0
WSLF2512 2512
5.0
3.0
1.0, 5.0
2512
4.0
2.0
1.0, 5.0
Notes
• Part marking: no part marking on these parts
(1) See “Ambient Temperature Derating” on next page, Fig. 1
(2) See “Terminal Temperature Derating” on next page, Fig. 2
(3) Other values may be available, contact factory
RESISTANCE VALUE RESISTANCE VALUES
WEIGHT
RANGE
CURRENTLY AVAILABLE (3)
(typical)
  g/1000 pieces
0.3m to 0.5m
1m to 2m
3m
0.3m, 0.5m
1m, 1.3m, 2m
3m
258
212
267
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSLF25121L000FEA (WSLF2512, 0.001 , ± 1 %)
(visit www.vishay.net Vishay Dale parts numbering manual for all options)
WS L F 2 5 1 2 1 L 0 0 0 F E A
GLOBAL MODEL
(8 digits)
WSLF2512
RESISTANCE VALUE
(5 digits)
L = m
L5000 = 0.0005
1L000 = 0.0010
TOLERANCE CODE
(1 digit)
F = ± 1.0 %
J = ± 5.0 %
PACKAGING CODE (1)
(2 digits)
EA = lead (Pb)-free, tape/reel
EK = lead (Pb)-free, bulk
SPECIAL (2)
(2 digits)
Reserved for future
specials
Notes
(1) Packaging code: EB (lead (Pb)-free) are non-standard packaging codes designating 1000 piece reels. These non-standard packaging codes
are identical to our standard EA (lead (Pb)-free), except that they have a package quantity of 1000 pieces
(2) Follow link for customization capabilities: www.vishay.com/doc?48163
Revision: 03-Jan-2020
1 Document Number: 30193
For technical questions, contact: ww2bresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

WSLF
www.vishay.com
WSLF
Vishay Dale
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
WSLF RESISTOR CHARACTERISTICS
Component temperature coefficient
(including terminal) (1)
TCR measured from -55 °C to 150 °C
ppm/°C
± 200 for 0.3 mand 0.5 m
± 170 for 1.0 m
± 70 for 2 mand 3 m
Element TCR (2)
ppm/°C
< 20
Operating temperature range
°C
-65 to +170
Maximum working voltage (3)
V
(P x R)1/2
Notes
(1) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal
(2) Element TCR - only applies to the alloy used for the resistor element
(3) Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive
DIMENSIONS in inches (millimeters)
D1
H
L
W
T
D2
Typical current sensing traces
I
b
a
Notes
• 3D models available: www.vishay.com/doc?30335
• Surface mount solder profile recommendations: www.vishay.com/doc?31052
3
2
1
1) Resistive element: element
material used is dependent
on resistance value.
Refer to Element Material
in table)
2) Terminal: solid copper
3) Terminal / element weld
MODEL
WSLF2512
L
0.250 ± 0.006
(6.35 ± 0.15)
DIMENSIONS
WH
0.120 ± 0.008 0.0138 ± 0.0012
(3.02 ± 0.2)
(0.35 ± 0.03)
T
0.045 - 0.016
(1.14 - 0.4)
SOLDER PAD DIMENSIONS
ab
l
0.071
(1.80)
0.13
(3.40)
0.13
(3.40)
GLOBAL
MODEL
RESISTANCE
VALUE
(m)
THERMAL
RESISTANCE
(°C/W)
THICKNESS in inches (millimeters)
D1 D2
ELEMENT MATERIAL
0.3 3.8
0.040 (1.02)
0.040 (1.02)
Mn-Cu-Sn
0.5 6.7
0.033 (0.84)
0.033 (0.84)
Mn-Cu
WSLF2512
1.0
1.3
12.1
14.6
0.017 (0.43)
0.013 (0.33)
0.017 (0.43)
0.013 (0.33)
Mn-Cu
Mn-Cu
2.0 17.1
0.028 (0.71)
0.028 (0.71)
Ni-Cr
3.0 18.2
0.019 (0.48)
0.019 (0.48)
Ni-Cr
Note
(1) The full power rating of Power Metal Strip resistors are dependent upon the ability of the circuit board to dissipate the heat energy created
in the resistance element. It is recommended to follow common design practices for power semiconductors that ensure the junction
temperature is maintained with in thermal limits by using large pad surfaces, thermal vias, heavier copper weights, internal layers as well as
other thermal spreading features. The thermal resistance values provided function in the same manner as junction to terminal temperature
Revision: 03-Jan-2020
2 Document Number: 30193
For technical questions, contact: ww2bresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000


Features www.vishay.com WSLF Vishay Dale Power Metal Strip® Resistors, Low Value (Dow n to 0.0003 ), Surface-Mount ADDITI ONAL RESOURCES 3D 3D 3D Models Design Tools FEATURES • Power Metal Strip all-welded construction is ideal for all types of current sensing, voltage d ivision, and pulse applications • Sol id metal nickel-chrome, manganese-coppe r, or manganese-copper-tin alloy resist ive element with low TCR (< 20 ppm/°C) • Proprietary processing technique p roduces extremely low resistance values , down to 0.0003  • Sulfur resista nce by construction that is unaffected by high sulfur environments • Very lo w inductance (< 2 nH) • Low thermal E MF (< 3 μV/°C) • AEC-Q200 qualified (1) • Material categorization: for d efinitions of compliance please see www .vishay.com/doc?99912 Notes • Follow link to “Overview of Automotive Grade Products” for more details: www.vish ay.com/doc?49924 (1) Flame retardance t est may not be applicable to some resistor technologies STANDARD ELECTRICAL SPECIFICATIONS G.
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