IA
NT
Features
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■
■
■
Applications
■
■
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TO220 or TO221 housing
Low inductance
SMD and through hole versions
High power rating
Power supplies
Motor drives
Test and measurement
Welding
*R
oH
S
CO
M
PL
PWR220/PWR221 F Series Power Resistors
Material Specifications
Resistor ..........................................Thick film
Substrate...........................Alumina (AL203)
Housing.....................................Epoxy/PPS
Lead Frame ............Tinned Copper (Sn/Cu)
Maximum Torque .............................1.0 Nm
Packaging
Tubes....................................50 pcs./tube
Tape & Reel..........................500 pcs./reel
General Information
The Bourns
®
PWR220 F Series is a TO220 style Power Resistor; PWR221 F is a TO221 style
Power Resistor. Manufactured using thick film on Alumina ceramic technology, it is used in
applications such as power supplies, motor drives and measurements.
Electrical & Thermal Characteristics
Parameter
Resistance
(Version A & B)
(Version C)
Power Rating @ 70 °C without heat sink
Power Rating @ 70 °C with heat sink
(Version A & B)
(Version C)
Tolerance
0.02
Ω
< R < 1.0
Ω
1.0
Ω
< R < 100K
Ω
TCR
0.1
Ω
< R < 100.0K
Ω
0.05
Ω
< R < 0.099
Ω
0.02
Ω
< R < 0.049
Ω
Thermal Resistance – Rthj
(Version A & B)
(Version C)
Stability
Thermal EMF
Dielectric Withstanding Voltage
Operating Temperature
T
J
-40
0.1
3.5
2.1
0.5
1.0
2
+130
2.0
1.0
Symbol
R
R
Min.
0.02
0.02
Nom.
Max.
100K
15K
1.50
30
50
5.0
5.0
±100
±300
±600
Unit
Ω
Ω
W
W
W
%
%
PPM/°C
PPM/°C
PPM/°C
°C/W
°C/W
%
µV/°C
kV DC
°C
*RoHS Directive 2002/95/EC Jan 27 2003, including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
PWR220/PWR221 F Series Power Resistors
Product Dimensions
TO220 Housing: 2-Pin
10.16
(0.4)
3.7
(0.15)
1.2
(0.05)
TO220 Casing: 2-Pin (Surface Mount)
1.2
(0.05)
4.0
(0.16)
4.0
(0.16)
10.16
(0.4)
1.4
(0.06)
12.7
(0.50)
14.6 15.0 17.33
(0.57) (0.59) (0.68)
14.4
16.4
(0.57) (0.65)
6.0
17.3
(0.24) (0.68)
27.3
(1.07)
1.3
(0.05)
0.76
(0.03)
MEASURING
POINT
5.08
(0.2)
1.85
(0.07)
0.76
(0.03)
0.4
(0.015)
DIMENSIONS = MILLIMETERS
(INCHES)
How to Order
TO221 Casing: 2-Pin
PWR 220 - 2 F B R040 J E
10.16
(0.4)
3.2
(0.13)
1.2
(0.05)
4.0
(0.16)
Model
PWR = Power Resistor
Package
220 = TO220
221 = TO221
3.7
(0.15)
14.4
16.4
(0.57) (0.65)
18.3 28.3
(0.72) (1.11)
Number of Pins
2=2
Function
F = Thick Film
1.3
(0.05)
0.76
(0.03)
5.08
(0.2)
1.85
(0.07)
0.4
(0.015)
Version
A = Surface Mount 30 W (with Heat Sink)
B = Through-Hole 30 W (with Heat Sink)
C = Through-Hole 50 W (with Heat Sink)
Resistor Value for all Tolerances
<100 ohms ....“R” represents decimal point
(examples: 7R50 = 7.5 ohms; R040 = 0.040 ohms)
≥100
ohms ....First three digits are significant, fourth digit represents
number of zeros to follow
(examples: 2000 = 200 ohms; 2002 = 20K ohms)
Absolute Tolerance
J=5%
G=2%
F=1%
MEASURING
POINT
Typical Part Marking
PART
IDENTIFICATION
MANUFACTURER'S
TRADEMARK
PWR220-2F
R500 1%
0512
ABSOLUTE
RESISTANCE,
TOLERANCE
DATE CODE:
YYWW
Packaging
E = Tape & Reel
___ = Tubes
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
PWR220/PWR221 F Series Power Resistors
Packaging Dimensions
Index Hole
120
W
B
D
P
Trailer
A
Device
C
Leader
End
.......
.......
10 pitches (min.)
.......
.......
.......
.......
.......
.......
10 pitches (min.)
Start
DIMENSIONS:
MM
(INCHES)
Devices are packed in accordance with EIA standard
RS-481-A and specifications shown here.
Direction of Feed
Item
Carrier Width
Carrier Length
Carrier Depth
Reel Outside Diameter
Punch Hole Pitch
Tape Width
Quantity per Reel
Symbol
A
B
C
D
P
W
—
Dimensions
10.4
(0.409)
18.4
(0.724)
4.4
(0.173)
330
(12.992)
16.00
(0.630)
32
(1.260)
500
Reliable Electronic Solutions
Asia-Pacific:
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
REV. 12/14/07
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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