CO
M
PL
IA
NT
Features
■
TO220 or TO221 housing
■
Low inductance
■
SMD and through hole versions
■
High power rating
*R
oH
S
Models PWR220-2FB, PWR221-2FB,
and PWR220-2FA are not available
and not recommended for new
designs.
Models
PWR220T-35, PWR221T-30,
and
PWR263S-35
are suggested alternatives.
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
**Tape & Reel is only available for
Versions A and D.
Electrical & Thermal Characteristics
Parameter
Resistance
(Version A)
(Version C & D)
Power Rating @ 70 °C in Free Air
Power Rating with External Heat Sink
(Version A)
(Version C & D)
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)
(Version C & D)
Stability
Dielectric Withstanding Voltage
Operating Temperature
TJ
-40
3.5
2.1
0.5
2
+155
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
%
kV DC
°C
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.
*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.
Applications
■
Power supplies
■
Motor drives
■
Test and measurement
■
Welding
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)
Recommended Pad Layout
0.4
(0.015)
11.16
(0.439)
TO221 Casing: 2-Pin
10.16
(0.4)
3.2
(0.13)
1.2
(0.05)
12.10
(0.476)
18.33
(0.722)
DIMENSIONS:
MM
(INCHES)
4.0
(0.16)
3.20
(0.126)
5.08
(0.200)
18.3 28.3
(0.72) (1.11)
1.76
(0.069)
3.7
(0.15)
14.4
16.4
(0.57) (0.65)
How to Order
PWR 220 - 2 F B R040 J E
1.3
(0.05)
0.76
(0.03)
5.08
(0.2)
1.85
(0.07)
0.4
(0.015)
MEASURING
POINT
Typical Part Marking
PART
IDENTIFICATION
MANUFACTURER'S
TRADEMARK
PWR220-2F
R500 1%
0512
ABSOLUTE
RESISTANCE,
TOLERANCE
DATE CODE:
YYWW
Model
PWR = Power Resistor
Package
220 = TO220
221 = TO221
Number of Pins
2=2
Function
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)
D = TO220 Housing, Surface Mount, 50 W (w/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%
Packaging
E = Tape & Reel (Available only for Versions A and D)
___ = Tubes
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
PWR220/PWR221 F Series Power Resistors
Soldering Profile (Surface Mount Version Only)
Derating Curve
120
100
80
60
40
20
0
25
250
Peak 260 +5/-0 °C
230 °C or higher
Pre-heating Zone
Temperature (°C)
200
180 °C
150
100
150 °C
Power Ratio (%)
50
85
100
115
130
145
155
Temperature of Heat Sink (°C)
90 ± 30 seconds
30 ± 10 seconds
Soldering Zone
50
Heating Time
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
REV. 06/11
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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