Features
■ High current capability
■ Low inductance
■ Radial leads
■ Low ohmic
Applications
■ Power supplies
■ UPS
■ Motor drives
PWR4412-2S Series Bare Metal Element Resistor
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
General Information
The Bourns® PWR4412-2S Series is
a through-hole resistor designed for
current shunt and current sensing
applications such as power supplies of
different kinds, motor drives and many
other applications. The resistor is quite
rugged, consisting of a special metal
alloy welded to tinned copper leads.
Performance
ΔR
Load Life (1000 Hours @ 70 °C) ... 2.5 %
Moisture No Load 100 Hours .......... 1 %
Temperature Cycling
(-40 °C to +125 °C, 1000 Cycles) ...1 %
Electrical Specifi cations
Power Rating @ 85 °C .............1, 3, 5 W
(see matrix)
Resistance Range .....0.005 to 0.1 ohms
Tolerances Available ................1 %, 5 %
Temperature Range ......-55 ° to +270 °C
Maximum Working Voltage .............√P*R
Short Time Overload
.......... 5 x Rated Power for 5 seconds
Temperature Coeffi cient of Resistance
Wire .................................... ±20 ppm/°C
Packaging ..........................250 pcs./bag
Product Dimensions
REV. 03/09
*RoHS COMPLIANT
Power
Rating
(W)
Version Dimension L Dimension
H Max. Resistance Values
1B
11.43 +1.02/-0.51
(0.450 +0.04/-0.02)
7.62
(0.30)
R0050, R0100, R0200, R0250,
R0300, R0400, R0500, R1000
3C
15.24 +1.02/-0.51
(0.60 +0.04/-0.02)
25.4
(1.0)
R0050, R0100, R0150, R0200,
R0250, R0300, R0400, R0500,
R1000
5D
20.32 +1.02/-0.51
(0.80 +0.04/-0.02)
25.4
(1.0)
R0050, R0100, R0150, R0200,
R0250, R0300, R0500, R1000
Asia-Pacifi c:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
How to Order
PWR4412-2S B R0300 J
Model
Version
Resistance Value for All Tolerances
“R” represents decimal point (examples: R0050 = 5 milliohms; R1000 = 100 milliohms)
Absolute Tolerance
J = 5 %
F = 1 %
Note: Terminal pins are tin plated copper. DIMENSIONS: MM
(INCHES)
Power Derating Curve
Power (%)
Ambient Temperature (°C)
120
100
80
60
40
20
0
0 50 100 150 200 250 300 350
1.65 +0.25/-0.13
(0.065 +0.010/-0.005)
4.8
(0.189)
MAX.
L
1.01 ± 0.05
(0.040 ± 0.002)
H
3.18 ± 0.76
(0.125 ± 0.030)
