Features
Applications
nꢀ Powerꢀsupplies
nꢀ Motorꢀdrives
nꢀ Testꢀandꢀmeasurement
nꢀ Rectifiers
AUTOMOTIVE
GRADE
nꢀ TO-220ꢀhousing
nꢀ Lowꢀinductance
nꢀ Ceramicꢀbackplane
nꢀ Highꢀpowerꢀrating
nꢀ AEC-Q200ꢀcompliant
nꢀ RoHSꢀcompliant*
0
3
1
2
2
1622
25R0 1%
A
RICA
OST
C
PWR221T-30 Series Power Resistor
General Information
Additional Information
Bourns® PWR221T-30 Series is a TO-220 style power resistor made using thick film on
alumina ceramic technology. It is used in current limiting, capacitor discharge or current
measurement circuits in power supplies for telecom and industrial applications.
Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT
LIBRARY
Electrical & Thermal Characteristics
Parameter
Value(s)
0.02 Ω to 130 KΩ
30 W**
Popular Resistance Values
Resistance (See Popular Resistance Values table)
Power Rating @ 25 ˚C Case Temperature
Tolerance
Resistance
Value
Resistance
Value
Code
Code
±1 %***, ±5 %
R020
0.02 Ω***
1000
100 Ω
120 Ω
150 Ω
200 Ω
250 Ω
300 Ω
330 Ω
400 Ω
470 Ω
500 Ω
560 Ω
750 Ω
1.0 KΩ
1.5 KΩ
2.0 KΩ
2.5 KΩ
3.0 KΩ
3.3 KΩ
4.0 KΩ
5.0 KΩ
7.5 KΩ
10 KΩ
15 KΩ
20 KΩ
25 KΩ
30 KΩ
33 KΩ
40 KΩ
47 KΩ
50 KΩ
56 KΩ
68 KΩ
75 KΩ
82 KΩ
100 KΩ
115 KΩ
120 KΩ
125 KΩ
130 KΩ
TCR
R025 0.025 Ω*** 1200
R030 0.03 Ω*** 1500
R033 0.033 Ω*** 2000
R040
R050
0.100 Ω<R<130.0K Ω
0.050 Ω<R<0.100 Ω
0.020 Ω<R<0.050 Ω
±100 PPM/˚C
±300 PPM/˚C
±600 PPM/˚C
4.2 ˚C/W
0.1 µH maximum
√P*R with a maximum of 250 V
2 KV AC
0.04 Ω***
0.05 Ω***
2500
3000
Thermal Resistance - R
Inductance
Operating Voltage
Dielectric Strength
Insulation Resistance
Operating Temperature
thj
R075 0.075 Ω*** 3300
R100
R150
R200
R250
R300
R330
R400
R500
R750
1R00
1R50
2R00
2R50
3R00
3R30
4R00
5R00
7R50
8R00
10R0
12R0
15R0
20R0
25R0
27R0
30R0
33R0
40R0
47R0
50R0
56R0
75R0
0.1 Ω
0.15 Ω
0.2 Ω
0.25 Ω
0.3 Ω
0.33 Ω
0.4 Ω
0.5 Ω
0.75 Ω
1 Ω
1.5 Ω
2 Ω
2.5 Ω
3 Ω
3.3 Ω
4 Ω
5 Ω
4000
4700
5000
5600
7500
1001
1501
2001
2501
3001
3301
4001
5001
7501
1002
1502
2002
2502
3002
3302
4002
4702
5002
5602
6802
7502
8202
1003
1153
1203
1253
1303
10 GΩ
-55 ˚C to +150 ˚C
** Power rating of 2.25 W when mounted free to air (no heat sink).
*** Available for most values. Check Popular Resistance Values table.
Reliability Characteristics
Parameter
Specification
Short Term Overload (2x Pr for R < 2 Ω,
1.6 x Pr for R ≥ 2 Ω, V < 1.5 x Operating Voltage)
Load Life (2000 hours at rated power)
Thermal Shock (-55 ˚C to 155 ˚C, 5 cycles)
Resistance to Soldering Heat (10 seconds at
270 ˚C)
Vibration (20 G 10-2000 Hz .06 ” D.A.)
Terminal Strength (MIL-STD-202, Method 211
Test A1)
ΔR ±0.25 %
ΔR ±1.0 %
ΔR ±0.5 %
ΔR ±0.5 %
ΔR ±0.25 %
ΔR ±0.2 %
7.5 Ω
8 Ω
Shock (Saw Tooth: 100 g/6 ms)
Humidity (Steady State) 1000 hrs. 85 °C/85 % RH
High Temperature Exposure
ΔR ±0.5 %
ΔR ±0.5 %
10 Ω
12 Ω
15 Ω
20 Ω
25 Ω
27 Ω
30 Ω
33 Ω
40 Ω
47 Ω
50 Ω
56 Ω
75 Ω
ΔR ±0.5 %
(100 hrs - 40 % Pr @ +125 °C)
Material Characteristics
Packaging
............................................ 50 pcs./tube
Resistor ...................................Thick film
Substrate.....................Alumina (AL203)
Housing ........................................Epoxy
Pins....................Tinned Copper (Sn/Cu)
Flammability ........ Conforms to UL-94V0
Moisture Sensitivity Level.....................1
ESD Classification (HBM)...................3B
*** 5 % Tolerance
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHSꢀDirectiveꢀ2015/863,ꢀMarꢀ31,ꢀ2015ꢀandꢀAnnex.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀUsersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.ꢀ
Theꢀproductsꢀdescribedꢀhereinꢀandꢀthisꢀdocumentꢀareꢀsubjectꢀtoꢀspecificꢀlegalꢀdisclaimersꢀasꢀsetꢀforthꢀonꢀtheꢀlastꢀpageꢀofꢀthisꢀdocument,ꢀandꢀatꢀwww.bourns.com/docs/legal/disclaimer.pdf.