Models PWR220-2FB, PWR221-2FB,
Features
and PWR220-2FA are not available
TO220 or TO221 housing
and not recommended for new
Low inductance
designs.
SMD and through hole versions
Models PWR220T-35, PWR221T-30, and
High power rating PWR263S-35 are suggested alternatives.
PWR220/PWR221 F Series Power Resistors
Material Speci cations General Information
Resistor .................................. Thick lm
The Bourns PWR220 F Series is a TO220 style Power Resistor; PWR221 F is a TO221
Substrate ......................Alumina (AL203)
style Power Resistor. Manufactured using thick lm on Alumina ceramic technology, it
Housing ................................Epoxy/PPS
is used in applications such as power supplies, motor drives and measurements.
Lead Frame .......Tinned Copper (Sn/Cu)
Maximum Torque ........................ 1.0 Nm
Packaging
Tubes ...............................50 pcs./tube
Tape & Reel** ..................500 pcs./reel
**Tape & Reel is only available for
Versions A and D.
Electrical & Thermal Characteristics
Parameter Symbol Min. Nom. Max. Unit
Resistance
(Version A) R 0.02 100K
(Version C & D) R 0.02 15K
Power Rating @ 70 C in Free Air
Power Rating with External Heat Sink 1.50 W
(Version A) 30 W
(Version C & D) 50 W
Tolerance
0.02 < R < 1.0 2.0 5.0 %
1.0 < R < 100K 1.0 5.0 %
TCR
0.1 < R < 100.0K 100 PPM/C
0.05 < R < 0.099 300 PPM/C
0.02 < R < 0.049 600 PPM/C
Thermal Resistance Rthj
(Version A) 3.5 C/W
(Version C & D) 2.1 C/W
Stability 0.5 %
Dielectric Withstanding Voltage 2 kV DC
Operating Temperature T -40 +155 C
J
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications.
*RoHS COMPLIANTApplications
Power supplies
Motor drives
Test and measurement
Welding
PWR220/PWR221 F Series Power Resistors
Product Dimensions
TO220 Housing: 2-Pin TO220 Casing: 2-Pin (Surface Mount)
4.0
(0.16)
1.2
10.16
10.16 (0.05)
(0.4)
4.0
(0.4)
3.7 (0.16)
1.2
(0.15)
(0.05)
1.4
(0.06)
12.7
14.6 15.0 17.33
(0.50)
(0.57) (0.59) (0.68)
6.0 17.3 27.3
14.4 16.4
(0.24) (0.68) (1.07)
(0.57) (0.65)
0.76
1.3
(0.03)
(0.05) 1.85
(0.07)
0.76
(0.03) Recommended Pad Layout
MEASURING
POINT
11.16
5.08 0.4
(0.439)
(0.2) (0.015)
12.10
TO221 Casing: 2-Pin
(0.476) MM
18.33
DIMENSIONS:
(0.722) (INCHES)
10.16
(0.4)
4.0
3.2 (0.16)
1.2
(0.13) 3.20
(0.05)
1.76
(0.126)
(0.069)
5.08
(0.200)
3.7
18.3 28.3
(0.15)
14.4 16.4 (0.72) (1.11)
How to Order
(0.57) (0.65)
PWR 220 - 2 F B R040 J E
1.3
Model
(0.05) 1.85
0.76 PWR = Power Resistor
(0.07)
(0.03)
Package
MEASURING 220 = TO220
0.4
POINT 5.08 221 = TO221
(0.015)
(0.2)
Number of Pins
2 = 2
Function
Typical Part Marking
F = Thick Film
Version
A = TO221 Housing, Surface Mount, 30 W (w/Heat Sink)
C = TO220 Housing/TO221 Housing, Through-Hole, 50 W
(w/Heat Sink)
ABSOLUTE
D = TO220 Housing, Surface Mount, 50 W (w/Heat Sink)
PART
RESISTANCE,
IDENTIFICATION PWR220-2F
TOLERANCE
Resistor Value for all Tolerances
R500 1% <100 ohms ..... R represents decimal point
(examples: 7R50 = 7.5 ohms; R040 = 0.040 ohms)
0512 DATE CODE:
MANUFACTURER'S
100 ohms ..... First three digits are signi cant, fourth digit represents
YYWW
TRADEMARK
number of zeros to follow
(examples: 2000 = 200 ohms; 2002 = 20K ohms)
Absolute Tolerance
J = 5 % G = 2 % F = 1 %
Packaging
E = Tape & Reel (Available only for Versions A and D)
___ = Tubes
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications.