PL IA NT CO M *R oH S Features Models PWR220-2FB, PWR221-2FB, and PWR220-2FA are not available and not recommended for new designs. ■ TO220 or TO221 housing ■ Low inductance ■ SMD and through hole versions Models PWR220T-35, PWR221T-30, and PWR263S-35 are suggested alternatives. ■ High power rating PWR220/PWR221 F Series Power Resistors Material Specifications Resistor .................................. Thick film Substrate ......................Alumina (AL203) Housing ................................Epoxy/PPS Lead Frame .......Tinned Copper (Sn/Cu) Maximum Torque ........................ 1.0 Nm Packaging Tubes...............................50 pcs./tube Tape & Reel**.................. 500 pcs./reel General Information 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. **Tape & Reel is only available for Versions A and D. Electrical & Thermal Characteristics Parameter Resistance (Version A) (Version C & D) Symbol Min. R R 0.02 0.02 Nom. Power Rating @ 70 °C in Free Air Power Rating with External Heat Sink (Version A) (Version C & D) Tolerance 0.02 Ω < R < 1.0 Ω 1.0 Ω < R < 100K Ω 2.0 1.0 TCR 0.1 Ω < R < 100.0K Ω 0.05 Ω < R < 0.099 Ω 0.02 Ω < R < 0.049 Ω Max. Unit 100K 15K Ω Ω 1.50 30 50 W W W 5.0 5.0 % % ±100 ±300 ±600 PPM/°C PPM/°C PPM/°C Thermal Resistance – Rthj (Version A) (Version C & D) 3.5 2.1 °C/W °C/W Stability 0.5 % Dielectric Withstanding Voltage Operating Temperature *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. TJ -40 2 kV DC +155 °C Applications ■ Power supplies ■ Motor drives ■ Test and measurement ■ Welding PWR220/PWR221 F Series Power Resistors Product Dimensions TO220 Housing: 2-Pin TO220 Casing: 2-Pin (Surface Mount) 10.16 (0.4) 3.7 (0.15) 1.2 (0.05) 1.2 (0.05) 10.16 (0.4) 4.0 (0.16) 1.4 (0.06) 12.7 (0.50) 6.0 17.3 (0.24) (0.68) 14.4 16.4 (0.57) (0.65) 1.3 (0.05) 0.76 (0.03) MEASURING POINT 5.08 (0.2) 0.76 (0.03) Recommended Pad Layout 11.16 (0.439) 0.4 (0.015) 12.10 (0.476) 10.16 (0.4) 3.7 (0.15) 14.6 15.0 17.33 (0.57) (0.59) (0.68) 27.3 (1.07) 1.85 (0.07) TO221 Casing: 2-Pin 3.2 (0.13) 4.0 (0.16) 1.2 (0.05) DIMENSIONS: MM (INCHES) 4.0 (0.16) 3.20 (0.126) 5.08 (0.200) 18.3 28.3 (0.72) (1.11) 14.4 16.4 (0.57) (0.65) 18.33 (0.722) 1.76 (0.069) How to Order PWR 220 - 2 F B R040 J E 1.3 (0.05) MEASURING POINT 0.76 (0.03) 5.08 (0.2) 1.85 (0.07) 0.4 (0.015) Typical Part Marking PART IDENTIFICATION MANUFACTURER'S TRADEMARK PWR220-2F R500 1% 0512 ABSOLUTE RESISTANCE, TOLERANCE DATE CODE: YYWW Model PWR = Power Resistor Package 220 = TO220 221 = TO221 Number of Pins 2=2 Function F = Thick Film Version A = TO221 Housing, Surface Mount, 30 W (w/Heat Sink) C = TO220 Housing/TO221 Housing, Through-Hole, 50 W (w/Heat Sink) D = TO220 Housing, Surface Mount, 50 W (w/Heat Sink) Resistor Value for all Tolerances <100 ohms ..... “R” represents decimal point (examples: 7R50 = 7.5 ohms; R040 = 0.040 ohms) ≥100 ohms ..... First three digits are significant, fourth digit represents number of zeros to follow (examples: 2000 = 200 ohms; 2002 = 20K ohms) Absolute Tolerance J=5% G=2% F=1% Packaging E = Tape & Reel (Available only for Versions A and D) ___ = Tubes Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. PWR220/PWR221 F Series Power Resistors Temperature (°C) 250 Derating Curve Power Ratio (%) Soldering Profile (Surface Mount Version Only) Peak 260 +5/-0 °C 230 °C or higher 200 Pre-heating Zone 180 °C 150 120 100 80 60 40 20 0 25 150 °C 50 85 100 115 130 145 155 Temperature of Heat Sink (°C) 90 ± 30 seconds 100 30 ± 10 seconds Soldering Zone 50 Heating Time Packaging Dimensions Index Hole 120 W B D P A Trailer ....... ....... End C Device ....... ....... Leader ....... ....... ....... ....... 10 pitches (min.) 10 pitches (min.) Direction of Feed Item Symbol Dimensions Carrier Width A 10.4 (0.409) Carrier Length B 18.4 (0.724) Carrier Depth C 4.4 (0.173) Reel Outside Diameter D 330 (12.992) Punch Hole Pitch P 16.00 (0.630) Tape Width W 32 (1.260) Quantity per Reel — 500 REV. 06/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Start DIMENSIONS: MM (INCHES) Devices are packed in accordance with EIA standard RS-481-A and specifications shown here.