Power Resistor. PWR221T-50 Datasheet

PWR221T-50 Resistor. Datasheet pdf. Equivalent

Part PWR221T-50
Description Power Resistor
Feature 0 2 2251R051%0 COS T1A73R 8I C A Features n TO-220 housing n Low inductance n Ceramic backpl.
Manufacture BOURNS
Datasheet
Download PWR221T-50 Datasheet

0 2 2251R051%0 COS T1A73R 8I C A Features n TO-220 hou PWR221T-50 Datasheet
Recommendation Recommendation Datasheet PWR221T-50 Datasheet




PWR221T-50
2
2251R051%0
COS
T1A73R 8I C
A
Features
n TO-220 housing
n Low inductance
n Ceramic backplane
n High power rating
n RoHS compliant*
Applications
n Power supplies
n Motor drives
n Test and measurement
n Rectifiers
PWR221T-50 Series Power Resistor
General Information
Bourns® PWR221T-50 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
Hot TCR
0.100 Ω ≤ R ≤ 130.0 KΩ
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
50 W(1)
±1 %(2), ±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
(1) Power rating of 2.25 W when mounted free to air (no heat sink).
(2) 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 ±0.25 %
ΔR ±1.0 %
ΔR ±0.5 %
ΔR ±0.5 %
ΔR ±0.25 %
ΔR ±0.2 %
ΔR ±0.5 %
ΔR ±0.5 %
ΔR ±0.5 %
Typical Part Marking
RESISTANCE
CODE
MANUFACTURER'S
TRADEMARK
221 50
R500 1%
YYWW
COSTA RICA
MODEL
NUMBER
TOLERANCE
DATE CODE
COUNTRY
OF ORIGIN
Material Characteristics
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
Packaging
............................................ 50 pcs./tube
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Popular Resistance Values
Code
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
0.02 Ω(3)
0.025 Ω(3)
0.03 Ω(3)
0.033 Ω(3)
0.04 Ω(3)
0.05 Ω(3)
0.075 Ω(3)
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
1.5 Ω
2.5 Ω
3.3 Ω
7.5 Ω
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
Code
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
(3) 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.
Users should verify actual device performance in their
specific applications.
The products described herein and this document are
subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/
docs/legal/disclaimer.pdf.



PWR221T-50
PWR221T-50 Series Power Resistor
Product Dimensions
3.18 ± 0.1
(.125 ± .004)
DIA.
10.41 ± 0.25
(.410 ± .010)
CL
3.18 ± 0.25
(.125 ± .010)
LC
3.18 ± 0.25
(.125 ± .010)
15.62 ± 0.25
(.615 ± .010)
REFERENCE
BOARD
SURFACE
12.7 ± 1.27
(.500 ± .050)
2.54 ± 0.25
(.100 ± .010)
1.38 ± 0.25
(.054 ± .010)
16.26 ± 0.25
(.640 ± .010)
8.38 ± 0.25
(.330 ± .010)
CERAMIC
2.92 ± 0.25
(.115 ± .010)
CERAMIC
9.14 ± 0.25
(.360 ± .010)
CERAMIC
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)
D IMENSIONS:
MM
(INCHES)
T OLERANCE: ± (00..03185 ) UNLESS OTHERWISE NOTED
Pulse Power Rating
100
10
1
0.1
0.01
10 - 6
10 - 5
10- 4
10- 3
Overload Duration in Seconds
10 - 2
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.
How to Order
PWR 221 T - 50 - 10R0 F
Model
PWR = Power
Resistor
Package
221 = TO-220 Style
Pin Style
T = Through-hole
Power
50 = 50 W
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)
Absolute Tolerance
J=5%
F = 1 % (Available for most values.
Check Popular Resistance
Values table.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.





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