SG3, SG4 Vishay Sfernice Cemented Wirewound Resistors FEATURES * 3 W and 4 W at + 40 C * * * * * Cemented protection Non flammability Industrial applications Compliant to RoHS directive 2002/95/EC Low values available: 10 m available (for SG3) 100 m available (for SG4) 68 1 6 O A max. O 0.8 10 0.5 L max. 25 min. 25 min. 75 DIMENSIONS in millimeters (max.) MODEL OA L SG3 5 (5.2 for 0.2 ) 13 SG4 5.5 (5.8 for 0.5 ) 15.8 MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections ELECTRICAL SPECIFICATIONS Cement Ni Cr wire Copper tinned SG3 Ohmic Range Standard Tolerance Power Rating at + 40 C ENVIRONMENTAL SPECIFICATIONS Temperature Limits Climatic Category - 55 C + 250 C 55/250/21 SG4 0.01 to 3.3 k 0.02 to 3.9 k 5% 3W 4W Limiting Element Voltage 100 V 125 V Critical Resistance 3.3 k 3.9 k Temperature Coefficient (typical) V < 0.1 300 ppm/C Temperature Coefficient (typical) V 0.1 150 ppm/C PERFORMANCE TESTS CONDITIONS TYPICAL VALUES AND DRIFTS 5 Pn during 5 s (1.5 % + 0.005 ) EN1400 CEI-115-1 - 55 C + 200 C 5 cycles (1 % + 0.005 ) Humidity EN60115-1 56 days 93 % RH (1 % + 0.005 ) Load Life MIL-STD 202 Method 108 Pr 1000h (5 % + 0.005 ) Moisture Resistance MIL-STD 202 Method 106 (1 % + 0.005 ) Vibration MIL-STD 202 Method 204 Test 20 g 10 Hz/2000 Hz (0.5 % + 0.005 ) Shock MIL-STD 202 Method 213 Test C (0.5 % + 0.005 ) Short Time Overload Rapid Change of Temperature Document Number: 50012 Revision: 23-Sep-09 For technical questions, contact: sfer@vishay.com www.vishay.com 109 SG3, SG4 Cemented Wirewound Resistors Vishay Sfernice SPECIAL FEATURES Please consult Vishay Sfernice for other ohmic values and tolerances. POWER RATING CHART TEMPERATURE RISE 100 80 60 40 SG 240 180 120 60 20 0 SG 3 HOT SPOT TEMPERATURE IN C % RATED POWER 4 300 0 0 40 80 120 160 200 240 260 0 1 2 AMBIENT TEMPERATURE IN C 3 4 5 6 7 RATED POWER IN W MARKING GEKA trademark, model, style, nominal resistance (in ), tolerance (in %). Note: For low ohmic values, (< 0.1 ), quality of marking cannot be guaranteed. PACKAGING Tape and reel packaging by: - 1500 pieces SG3 - 1250 pieces SG4 ORDERING INFORMATION SG 3 330 5% 150 ppm/C TR1500 e3 MODEL STYLE 3 4 OHMIC VALUE TOLERANCE TEMPERATURE COEFFICIENT 300 ppm/C PACKAGING LEAD (Pb)-FREE GLOBAL PART NUMBER INFORMATION S GLOBAL MODEL SG G 3 R 0 3 0 0 J R 1 8 SIZE OHMIC VALUE TOLERANCE PACKAGING SPECIAL 3 4 The first four digits are significant figures and the last digit specifies the number of zeros to follow. R designates decimal point. J = 5.0 % R17 = reel 1250 pieces As applicable. Example: AD7 R18 = reel 1500 pieces R0300 = 0.03 m 2R870 = 2.87 1R200 = 1.2 10020 = 10 000 R3300 = 0.33 www.vishay.com 110 For technical questions, contact: sfer@vishay.com Document Number: 50012 Revision: 23-Sep-09 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