WSK Datasheet, PDF (1/3 Pages) Vishay Siliconix – Power Metal Strip® Resistors, Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal

WSK
Vishay Dale
Power Metal Strip^® Resistors,
Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal
FEATURES
• 4-Terminal design allows for 1 % tolerance down
to 0.001 Ω and 0.5 % tolerance down to 0.003 Ω
• Ideal for all types of precision current sensing,
Pb-free
Available
voltage division and pulse applications
e3 ^{including switching and linear power supplies,}
instruments, power amplifiers
• Proprietary processing technique produces _RoHS*
extremely low resistance values (down to 0.001 Ω) _COMPLIANT
• All welded construction
• Solid metal Nickel-Chrome or Manganese-Copper alloy
resistive element with low TCR (< 20 ppm/°C)
• Solderable terminations
• Very low inductance 0.5 nH to 5 nH
• Excellent frequency response to 50 MHz
• Lead (Pb)-free version is RoHS compliant
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
POWER RATING
P_{70 °C}
W
RESISTANCE RANGE
Ω
± 0.5 %
± 1.0 %
WSK2512
1.0
0.003 - 0.025
0.001 - 0.025
Note
• Part Marking: DALE, Value, Tolerance; due to resistor size limitations some resistance values will be marked with only the resistance value
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Operating Temperature Range
Maximum Working Voltage
Weight/1000 pieces
UNIT
ppm/°C
°C
V
g
WSK2512
0.001 Ω - 0.0029 Ω = ± 250
0.003 Ω - 0.0049 Ω = ± 75
0.005 Ω - 0.025 Ω = ± 35
- 65 to + 170
(P x R)^1/2
63.6
GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBERING: WSK25125L000FTA (PREFERRED PART NUMBERING FORMAT)
WS K 2 5 1 2 5 L 0 0 0 F T A
GLOBAL MODEL RESISTANCE VALUE
TOLERANCE CODE
PACKAGING CODE
WSK2512
L = mΩ*
R = Decimal
5L000 = 0.005 Ω
R0100 = 0.01 Ω
* use “L” for resistance
values < 0.01 Ω
D = ± 0.5 %
F = ± 1.0 %
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
TA = Tin/lead, tape/reel (R86)
BA = Tin/lead, bulk (B43)
HISTORICAL PART NUMBERING: WSK2512 0.005 Ω 1 % R86 (WILL CONTINUE TO BE ACCEPTED)
WSK2512
0.005 Ω
1%
SPECIAL
(Dash Number)
(up to 2 digits)
From 1 - 99 as
applicable
R86
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
* Pb containing terminations are not RoHS compliant, exemptions may apply
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PACKAGING
Document Number: 30108
Revision: 26-Mar-07