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PL IA NT
Features
TO-220 housing Low inductance
2 2302 1
3
Applications
Power supplies Motor drives Test and measurement Rectifiers
*R oH S
CO M
0 02 %
92
TA
3
RIC A
Resistor electrically isolated from the
S CO
backplate High power rating RoHS compliant*
PWR220T-20 Series Power Resistor
General Information Bourns(R) PWR220T-20 Series is a TO-220 DPAK style power resistor. Manufactured using thick film on alumina ceramic technology, it is used in current measurement, snubber, bleeder and discharge circuits. Electrical & Thermal Characteristics
Parameter Resistance (See table of standard values) Power Rating @ 25 C Case Temperature Tolerance TCR 0.02 Material Characteristics Resistor .................................. Thick film Substrate ......................Alumina (AL203) Housing ........................................Epoxy Pins....................Tinned Copper (Sn/Cu) Flammability ........Conforms to UL-94V0 Packaging ............................................50 pcs./tube Standard Resistance Values
Code Resistance Value Code Resistance Value
100 PPM/C 6.5 C/W 0.1 H maximum P*R with a maximum of 250 V 2 KV AC 10 G -55 C to 155 C
** Available for most values. Check Standard Resistance Values table.
Reliability Characteristics
Parameter Short Term Overload (2x Pr for R < 2 , 1.6 x Pr for R 2 , V < 1.5 x Operating Voltage) Load Life (1000 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 R R R 0.25 % 1.0 % 0.5 %
R 0.5 % R 0.25 % R 0.2 % R 0.5 % R 0.5 % R 0.5 %
R020 R050 R100 R500 R750 1R00 1R50 2R00 2R20 2R50 3R00 3R30 4R70 5R00 7R50 8R20 10R0 15R0
0.02*** 0.05*** 0.1 0.5 0.75 1 1.5 2 2.2 2.5 3 3.3 4.7 5 7.5 8.2 10 15
20R0 30R0 33R0 47R0 50R0 56R0 75R0 1000 2000 3300 4700 7500 1001 3301 1002 3002 1003 1303
20 30 33 47 50 56 75 100 200 330 470 7500 1000 3300 10000 33000 100000 130000
*** 5 % Tolerance
Typical Part Marking Derating Curve
120 100
MODEL NUMBER RESISTANCE CODE MANUFACTURER'S TRADEMARK 220 20 R500 1% 902
COSTA RICA
Power Ratio (%)
80 60 40 20 0 -20 25 35 45 55 65 75 85 95 105 115 125 135 145 155
TOLERANCE DATE CODE COUNTRY OF ORIGIN
Temperature of Backplate (C)
*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.
PWR220T-20 Series Power Resistor
Product Dimensions
4.0 (.158) 10.1 (.398) 3.6 DIA. (.142) 1.23 (.049)
How to Order
PWR 220 T - 20 - 10R0 F
Model PWR = Power Resistor Package 220 = TO-220 Style
6.0 (.236)
2.5 (.098) 14.6 (.575
Pin Style T = Through-hole Power 20 = 20 W Resistance Value <100 ohms ... "R" represents decimal point (examples: 7R50 = 7.5 ; R500 = 0.5 ) 100 ohms ... First three digits are significant, fourth digit represents number of zeros to follow (examples: 2000 = 200 ohms; 3002 = 30K ohms) Absolute Tolerance J=5% F=1%
8.63 (.340)
13.72 (.540)
28.3 (1.12) REF.
0.72 (.029) 5.08 (.200)
2.25 (.089)
DIMENSIONS:
MM (INCHES)
Pulse Power Rating
100
Energy in Joules
10
1
0.1 0.01 10 - 7
10 - 6
10 - 5
10 -4
10 -3
10 -2
10 -1
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.
Asia-Pacific: Tel: +886-2 2562-4117 Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 Fax: +1-951 781-5700 www.bourns.com
12/09
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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