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Features
n
TO-220 housing
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Low inductance
1
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Applications
n
Power supplies
n
Motor drives
n
Test and measurement
n
Rectifiers
30
n
Ceramic backplane
n
High power rating
n
AEC-Q200 qualified
n
RoHS compliant*
s)
2
1
TA
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General Information
PWR221T-30 Series Power Resistor
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.
Electrical & Thermal Characteristics
Parameter
Resistance (See Popular Resistance Values table)
Power Rating @ 25 ˚C Case Temperature
Tolerance
TCR
0.100
Ω<R<130.0K Ω
0.050
Ω<R<0.100 Ω
0.020
Ω<R<0.050 Ω
Thermal Resistance - Rthj
Inductance
Operating Voltage
Dielectric Strength
Insulation Resistance
Operating Temperature
Value(s)
0.02
Ω
to 130 KΩ
30 W**
±1 %***, ±5 %
±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
10 GΩ
-55 ˚C to +150 ˚C
Popular Resistance Values
Code
** 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
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)
Shock (Saw Tooth: 100 g/6 ms)
Humidity (Steady State) 1000 hrs. 85 °C/85 % RH
High Temperature Exposure
(100 hrs - 40 % Pr @ +125 °C)
Specification
ΔR
ΔR
ΔR
±0.25 %
±1.0 %
±0.5 %
ΔR
±0.5 %
ΔR
±0.25 %
ΔR
±0.2 %
ΔR
±0.5 %
ΔR
±0.5 %
ΔR
±0.5 %
Material Characteristics
Resistor
...................................Thick film
Substrate
.....................
Alumina (AL203)
Housing ........................................Epoxy
Pins....................Tinned
Copper (Sn/Cu)
Flammability
........ Conforms to UL-94V0
Packaging
............................................ 50 pcs./tube
Typical Part Marking
RESISTANCE
CODE
MANUFACTURER'S
TRADEMARK
COSTA RICA
221 30
R500 1%
YYWW
MODEL
NUMBER
TOLERANCE
DATE CODE
COUNTRY
OF ORIGIN
R020
R025
R030
R033
R040
R050
R075
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
Resistance
Value
Code
0.02 Ω***
0.025 Ω***
0.03 Ω***
0.033 Ω***
0.04 Ω***
0.05 Ω***
0.075 Ω***
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
1Ω
1.5 Ω
2Ω
2.5 Ω
3Ω
3.3 Ω
4Ω
5Ω
7.5 Ω
8Ω
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
1000
1200
1500
2000
2500
3000
3300
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
Resistance
Value
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
*** 5 % Tolerance
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
PWR221T-30 Series Power Resistor
Product Dimensions
10.41 ± 0.25
(.410 ± .010)
3.18 ± 0.1
(.125 ± .004)
DIA.
C
L
3.18 ± 0.25
(.125 ± .010)
1.38 ± 0.25
(.054 ± .010)
8.38 ± 0.25
(.330 ± .010)
CERAMIC
LC
2.92 ± 0.25
(.115 ± .010)
CERAMIC
3.18 ± 0.25
(.125 ± .010)
16.26 ± 0.25
(.640 ± .010)
15.62 ± 0.25
(.615 ± .010)
REFERENCE
BOARD
SURFACE
9.14 ± 0.25
(.360 ± .010)
CERAMIC
12.7 ± 1.27
(.500 ± .050)
2.54 ± 0.25
(.100 ± .010)
1.02 ± 0.25
(.040 ± .010)
CERAMIC
5.08 ± 0.25
(.200 ± .010)
0.72 ± 0.12
(.029 ± .005)
1.03 ± 0.25
(.041 ± .010)
DIMENSIONS:
MM
(INCHES)
0.38
TOLERANCE: ±
UNLESS OTHERWISE NOTED
(0.015)
Pulse Power Rating
100
How to Order
PWR 221 T - 30 - 10R0 F
Model
PWR = Power
Resistor
10
Package
220 = TO-220 Style
Pin Style
T = Through-hole
Energy in Joules
1
Power
30 = 30 W
0.1
0.01
10 -6
10 -5
10 - 4
10 - 3
10 - 2
Overload Duration in Seconds
The energy absorbed by the resistor expressed in Joules can be calculated by
multiplying the peak power of the pulse in watts times the length of the pulse in
seconds.
The energy should not exceed the limits shown in the graph. The overload voltage
should not exceed 1.5 times the maximum operating voltage.
Absolute Tolerance
J=5%
F=1%
Resistance Value
<100 ohms ... “R” represents decimal
point (examples: 7R50 =
7.5
Ω;
R500 = 0.5
Ω)
≥100
ohms.... First three digits are
significant, fourth digit
represents number of
zeros to follow (exam-
ples: 2000 = 200 ohms;
3002 = 30K ohms)
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
PWR221T-30 Series Power Resistor
Derating Curve
120
100
Power Ratio (%)
80
60
40
20
0
25
35
45
55
65
75
85
95
105
115 125 135 145 150
Case Temperature (°C)
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 07/16
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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