Surface Mounted Power Resistor Thick Film Technology

Transcription

1 D2TO20 DIMENSIONS in millimeters Surface Mounted Power Resistor FEATURES 20 W at 25 C case temperature Surface mounted resistor - TO (D2 PAK) style package Wide resistance range from 0.01 Ω to 550 kω Non Inductive RoHS compliant Resistor isolated from Metal Tab Solder reflow secure at 270 C/10 s Footprint recommendation for solderable contact area: Note: For the asssembly on board, we recommend the lead (Pb)-free thermal profile as per J-STD-020C 12.7 RoHS COMPLIANT Tolerance: ± 0.3 mm ELECTRICAL SPECIFICATIONS Resistance Range 0.01 Ω to 550 kω Tolerances (standard) ± 1 % to 10 % Power Rating and Thermal Resistance 20 W at 25 C (case temperature) R TH (j-c) : 6.5 C/W Temperature Coefficient See Special Features table Standard: ± 150 ppm/ C Limiting Element Voltage 250 V Dielectric Strength 2000 V rms - 1 minute - 10 ma max (Between Terminals and Board) Insulation Resistance 10 6 MΩ Inductance 0.1 µh Critical Resistance 3.12 KΩ SPECIAL FEATURES Resistance Values Tolerances ± 1 % at ± 10 % Requirement Temperature Coefficient (TCR) (- 55 C C) ± 1100 ppm/ C ± 700 ppm/ C ± 250 ppm/ C ± 150 ppm/ C For technical questions, contact: sfer@vishay.com Document Number: Revision: 14-Nov-07

2 Surface Mounted Power Resistor D2TO20 MECHANICAL SPECIFICATIONS Mechanical Protection Molded Resistive Element Thick Film Substrate Alumina Connections Tinned Copper Weight 2.2 g max. POWER RATING The temperature of the case should be maintained within the limits specified ENVIRONMENTAL SPECIFICATIONS Temperature Range - 55 C to 155 C Flammability IEC applications 30 s seperated by 60 s % RATED POWER DIMENSIONS Standard package TO 263 Style (D2 PAK) CASE TEMPERATURE IN C MARKING Model, Style, Resistance Value (in Ω), Tolerance (in %), Manufacturing Date, Vishay Trademark PERFORMANCE TESTS CONDITIONS TYPICAL DRIFTS Momentary Overload Rapid Temperature Change Load Life Humidity (Steady State) Vibration Terminal Strength Shock x Pr for R < 2 Ω 1.6 x Pr for R 2 Ω ± (0.25 % Ω) Us < 1.5 U L Test Na 5 cycles - 1 h - 55 C to C 1000 h at + 25 C ± (1 % Ω) IEC Test Ca: 56 days R.H. 95 % MIL STD 202 Method Test. D ± (0.2 % Ω) 10 to 2000 Hz ± (0.2 % Ω) Test Ua1/Tensile: 20 N/10 s IEC Saw-tooth: 100 gn/6 ms ASSEMBLY SPECIFICATIONS For the assembly on board, we recommend the lead (Pb)-free thermal profile as per J-STD-020C TESTS CONDITIONS REQUIREMENTS Resistance to soldering heat Moisture Sensitivity Level (MSL) IEC Solder Bath method: 270 C/10 s IPC/JEDEC J-STD-020C 85 C/85 % RH/168 h Level: 1 + Pass requirements of TCR Overload and Dielectic Strength after MSL Document Number: For technical questions, contact: sfer@vishay.com Revision: 14-Nov-07 37

3 D2TO20 Surface Mounted Power Resistor CHOISE OF THE BOARD The user must choose the board according to the working conditions of the component (power, room temperature). Maximum working temperature must not exeed 155 C. The dissipated power is simply calculated by the following ratio: ΔT P = [ R TH ( j c) ] + [ R TH ( c a) ] P: expressed in W ΔT: difference between maximum working temperature and room temperature R TH (j - c): thermal resistance value measured between resistive layer and outer side of the resistor. It is the thermal resistance of the component: 6.5 C/W. R TH (c - a): thermal resistance value measured between outer side of the resistor and room temperature. It is the thermal resistance of the solder layer (according the quality of the soldering) and the thermal resistance of the board. Example: R TH (c - a) for D2TO20 power rating 2.5 W at ambient temperature + 25 C. Thermal resistance R TH (j - c): 6.5 C/W Considering equation (1) we have: ΔT = 155 C - 25 C = 130 C R TH (c - a) + R TH (c - a) = ΔT/P = 130/2.5 = 52 C/W R TH (c - a) = 52 C/W C/W = 45.5 C/W ACCIDENTAL OVERLOAD In any case the applied voltage must be lower than the maximum overload voltage of 375 V. The values indicated on the graph below are applicable to resistors in air or mounted onto a board. ENERGIE CURVE 100 Energy in Joules Overload duration in seconds PACKAGING Reel Tube Tape dimensions (mm) for reel: For technical questions, contact: sfer@vishay.com Document Number: Revision: 14-Nov-07

4 Surface Mounted Power Resistor D2TO20 ORDERING INFORMATION D2TO 20 C 100 kω ± 1 % XXX e3 MODEL STYLE CONNECTIONS RESISTANCE VALUE TOLERANCE CUSTOM DESIGN LEAD (Pb)-FREE F = ± 1 % G = ± 2 % J = ± 5 % K = ± 10 % Optional on request: shape, etc SAP PART NUMBERING GUIDELINES D 2 T O 2 0 C F R E 3 MODEL STYLE CONNECTIONS RESISTANCE VALUE TOL. PACK LEAD (PB)-FREE SAP Part Number D2TO20C10002FRE3 Document Number: For technical questions, contact: sfer@vishay.com Revision: 14-Nov-07 39

5 Notice Legal Disclaimer Notice Vishay Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: Revision: 08-Apr-05 1