Features
■ TO220 or TO221 housing
■ Low inductance
Applications
■ Power supplies
■ Motor drives
■ Test and measurement
■ Welding
■ SMD and through hole versions
■ High power rating
PWR220/PWR221 F Series Power Resistors
Material Specifications
General Information
Resistor ..........................................Thick film
Substrate...........................Alumina (AL203)
Housing.....................................Epoxy/PPS
Lead Frame ............Tinned Copper (Sn/Cu)
Maximum Torque.............................1.0 Nm
Packaging
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.
Tubes....................................50 pcs./tube
Tape & Reel..........................500 pcs./reel
Electrical & Thermal Characteristics
Parameter
Symbol
Min.
Nom.
Max.
Unit
Resistance
(Version A & B)
(Version C)
R
R
0.02
0.02
100K
15K
Ω
Ω
Power Rating @ 70 °C without heat sink
Power Rating @ 70 °C with heat sink
(Version A & B)
1.50
W
30
50
W
W
(Version C)
Tolerance
0.02 Ω < R < 1.0 Ω
1.0 Ω < R < 100K Ω
2.0
1.0
5.0
5.0
%
%
TCR
0.1 Ω < R < 100.0K Ω
0.05 Ω < R < 0.099 Ω
0.02 Ω < R < 0.049 Ω
±100
±±00
±ꢀ00
PPM/°C
PPM/°C
PPM/°C
Thermal Resistance – Rthj
(Version A & B)
3.5
2.1
°C/W
°C/W
(Version C)
Stability
0.1
-40
0.5
1.0
2
%
Thermal EMF
µV/°C
kV DC
°C
Dielectric Withstanding Voltage
Operating Temperature
T
+130
J
*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.