WK/WR Vishay Draloric High Power Metal Oxide Leaded Resistors FEATURES • Rugged metal oxide film • High power dissipation in small size (1 W/0207 size to 4 W/0922 size) • High temperature coating (up to 200 °C), non-flammable • Lead (Pb)-free solder contacts • Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes • Compliant to RoHS directive 2002/95/EC STANDARD ELECTRICAL SPECIFICATIONS MODEL SIZE RATED DISSIPATION P70 W LIMITING ELEMENT VOLTAGE Umax. V≅ TEMPERATURE COEFFICIENT ppm/K TOLERANCE % RESISTANCE RANGE E-SERIES WK2 0207 1.0 500 ± 50 ±1 4.7 Ω to 1 MΩ E24, E96 WK2 0207 1.0 500 ± 100 ±2 ±5 4.7 Ω to 1 MΩ 4.7 Ω to 1 MΩ E24, E48 E24 WK2 0207 1.0 500 ± 200 ±5 0.22 Ω to 1 MΩ E24 WR4 0414 2.0 500 ± 200 ±2 ±5 1 Ω to 1 MΩ 0.33 Ω to 1 MΩ E24, E48 E24 WR5 0617 3.0 750 ± 200 ±2 ±5 1 Ω to 100 kΩ 0.22 Ω to 560 kΩ E24, E48 E24 WK8 0922 4.0 750 ± 200 ±2 ±5 1 Ω to 68 kΩ 0.22 Ω to 100 kΩ E24, E48 E24 Notes • Coating: Green • Marking: WK2 and WR4 have color code band marking. TCR band will be given to only WK2, 100 ppm, 5 %. WR5 and WK8 are printed marked. TECHNICAL SPECIFICATIONS PARAMETER UNIT WK2 WR4 WR5 WK8 Rated Dissipation, P70 W 1.0 2.0 3.0 4.0 Limiting Element Voltage, Umax.(1) V≅ 500 500 750 750 Insulation Voltage, Uins (1 Min) V > 500 > 500 > 500 > 500 K/W ≤ 140 ≤ 100 ≤ 70 ≤ 60 1.5 3.5 Thermal Resistance, Rth Insulation Resistance Ω > 109 Category Temperature Range (2) °C - 55 to + 200 10-8/h <1 Failure Rate Weight g 0.2 0.7 Notes (1) (2) Rated Voltage P x R For values < 10R the upper limiting temperature is 155 °C. The power rating is correspondingly lower and can be calculated by Rth. www.vishay.com 176 For technical questions, contact: [email protected] Document Number: 20128 Revision: 26-May-10 WK/WR High Power Metal Oxide Leaded Resistors Vishay Draloric PART NUMBER AND PRODUCT DESCRIPTION WK2-SERIES PART NUMBER: WK202070C1001FD500 W K 2 0 2 0 7 0 C 1 0 0 1 F D 5 0 0 MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING (1) SPECIAL WK20207 0 = Neutral C = ± 50 ppm/K B = ± 100 ppm/K A = ± 200 ppm/K 3 digit value 1 digit multiplier MULTIPLIER F=±1% G=±2% J=±5% 22 = A2 25 = A5 D5 = R5 Up to 2 digits 00 = Standard 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105 6 = *106 PRODUCT DESCRIPTION: WK2 50 1K0 1 % R5 WK2 50 1K0 1% R5 MODEL TCR RESISTANCE VALUE TOLERANCE PACKAGING (1) WK2 ± 50 ppm/K ± 100 ppm/K ± 200 ppm/K 49K9 = 49.9 kΩ 50R1 = 50.1 Ω 1K0 = 1.0 kΩ ±1% ±2% ±5% A2 A5 R5 PART NUMBER AND PRODUCT DESCRIPTION WK8-SERIES PART NUMBER: WK80922001000J5C00 W K 8 0 9 2 2 0 0 1 0 0 0 J 5 C 0 0 MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING (1) SPECIAL WK80922 0 = Neutral 0 = Standard 3 digit value 1 digit multiplier MULTIPLIER G=±2% J=±5% 5C = AC G1 = R1 Up to 2 digits 00 = Standard 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105 PRODUCT DESCRIPTION: WK8 100R 5 % AC WK8 100R 5% AC MODEL TCR TOLERANCE PACKAGING (1) WK8 100R = 100 Ω 47K = 47 kΩ ±2% ±5% AC R1 PART NUMBER AND PRODUCT DESCRIPTION WR-SERIES PART NUMBER: WR404140A1001GFE00 W R 4 0 4 1 4 0 A 1 0 0 1 G F E 0 0 MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING (1) SPECIAL WR40414 WR50617 0 = Neutral A = ± 200 ppm/K 3 digit value 1 digit multiplier MULTIPLIER G=±2% J=±5% 41 = A1 G73 51 = A1 G77 FE = RE G73 GP = RP Up to 2 digits 00 = Standard 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105 6 = *106 PRODUCT DESCRIPTION: WR4 1K0 2 % RE WR4 1K0 2% RE MODEL RESISTANCE VALUE TOLERANCE PACKAGING (1) WR4 WR5 1K0 = 1.0 kΩ 51R0 = 51.0 Ω ±2% ±5% A1 (G73) A1 (G77) RE (G73) RP Notes (1) Please refer to table PACKAGING • The PART NUMBER shown above is to facilitate the unified part numbering system for ordering products www.vishay.com 177 For technical questions, contact: [email protected] Document Number: 20128 Revision: 26-May-10 WK/WR High Power Metal Oxide Leaded Resistors Vishay Draloric PACKAGING REEL MODEL BOX PIECES/BOX CODE MIN. ORDER QTY PACKAGING UNITS 5000 A5 1 2000 A2 1 2 1000 A1 (G73) 2 RP 2 1000 A1 (G77) 2 R1 2 500 AC 2 PIECES/REEL CODE MIN. ORDER QTY PACKAGING UNITS WK2 5000 R5 1 WR4 2500 RE WR5 1500 WK8 1000 DIMENSIONS 6 mm (1) L1 L DIMENSIONS [in millimeters] D MODEL d e B RATED POWER IN % TEMPERATURE RISE IN °C Notes (1) 9 mm for WR5/WK8 • Taping in acc. with IEC 60286-1 • D and L measured in acc. with IEC 60294 • d according to IEC 60301 300 WK8 250 WR5 WR4 200 WK2 150 L L1 max. B d e WK2 2.5 - 0.5 6.5 - 0.5 8.0 53 ± 1 0.6 7.5 WR4 3.9 - 0.5 10.0 - 1.6 12.0 73 ± 1 0.8 15.0 WR5 6.0 - 0.5 16.5 - 1.5 20.0 77 ± 1 0.8 17.5 WK8 9.0 - 0.5 20.0 - 1.5 24.0 77 ± 1 0.8 22.5 120 100 80 40 50 20 0 0 1.0 2.0 3.0 4.0 WK 8 WR 5 WR 4 WK 2 101 100 Secondary Conditions: a) P ϑ b) ϑu ≤ 70 °C c) Ûmax. see diagram below d) ~ 10R 10-1 -5 10 10-4 10-3 PULSE RATING P www.vishay.com 178 O 10 10-1 100 SQUARE PULSE t i [s] 40 80 120 160 200 240 280 320 360 AMBIENT TEMPERATURE IN °C DERATING 3 10 WK 8 WR 5 102 WR 4 WK 2 101 100 10-2 0 70 POWER IN W 3 102 - 55 5.0 POWER RATING P [W] TEMPERATURE RISE 10 WK2 WR4 WR5 WK8 60 100 0 POWER RATING P [W] D Secondary Conditions: a) P ≤ P70 (permissible constant power at ϑu = 70 °C) b) ϑu ≤ 70 °C c) Ûmax. see diagram below d) ~ 10R 10-1 -5 10 10-4 10-3 10-2 PULSE RATING P ≤ P70 For technical questions, contact: [email protected] 10 100 10-1 SQUARE PULSE t i [s] Document Number: 20128 Revision: 26-May-10 WK/WR PULSE VOLTAGE Ûmax. [V] High Power Metal Oxide Leaded Resistors Secondary Conditions: – a) P max. see diagram below b) See diagram below c) ϑu ≤ 70 °C 2000 WR 5/WK8 WR 4 WK 2 1000 0 10-5 10-4 10-3 10-2 10 10-1 100 SQUARE PULSE t i [s] MAX. PULSE VOLTAGE 130 CURRENT NOISE µV/V NON-LINEARITY A3 [dB] Vishay Draloric WR4 120 WR5/WK8 110 100 10 1 WR5/WK8 0.1 WR4 90 1K 10K 100K NON-LINEARITY 1M 10M RESISTANCE VALUE IN Ω 0.01 10K 100K CURRENT NOISE 1M 10M RESISTANCE VALUE IN Ω PERFORMANCE CONDITIONS OF TEST REQUIREMENTS (ΔR MAX.) (1) 1000 h at 70 °C 1.5 h ON, 0.5 h OFF WK2 ≤ ± (5 % R + 0.1 Ω) WK8 ≤ ± (2 % R + 0.1 Ω) WR4, WR5 ≤ ± (5 % R + 0.1 Ω) 1000 h at 200 °C without load WK2, WR4 ≤ ± (5 % R + 0.1 Ω) WR5, WK8 ≤ ± (1 % R + 0.1 Ω) Overload Test IEC 60115-1, 4.13 Short time overload 5 s at 2.5 x rated voltage or ≤ ± twice the limiting element voltage ≤ ± (0.25 % R + 0.05 Ω) Thermal Shock IEC 60115-1, 4.19 Rapid change between upper and lower category temperature ≤ ± (0.25 % R + 0.05 Ω) Climatic Sequence IEC 60115-1, 4.23 Dry heat, damp heat cycle, cold, low air pressure ≤ ± (0.5 % R + 0.1 Ω) 56 days; 40 °C; 90 % to 95 % RH; loaded with 0.01 P70 ≤ ± (1.5 % R + 0.1 Ω) 10 s at 260 °C solder bath temperature ≤ ± (0.25 % R + 0.05 Ω) Tensile, bending and torsion ≤ ± (0.25 % R + 0.05 Ω) Frequency 10 Hz to 500 Hz; displacement 1.5 mm or acceleration 10 g; three directions; 6 h ≤ ± (0.25 % R + 0.05 Ω) TEST Rated Dissipation, P70 IEC 60115-1, 4.25.1 Endurance at UCT IEC 60115-1, 4.25.3 Damp Heat Steady State IEC 60115-1, 4.24 Resistance to Soldering Heat IEC 60115-1, 4.18 Robustness of Terminations IEC 60115-1, 4.16 Vibration IEC 60115-1, 4.22 Note (1) Limits for change of resistance at test APPLICABLE SPECIFICATIONS • EN140100, EN60115-1, IEC 60115-1 www.vishay.com 179 For technical questions, contact: [email protected] Document Number: 20128 Revision: 26-May-10 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1