RSSD Vishay Sfernice Adjustable Wirewound Vitreous Resistors Low Ohmic Values (0.10 available) FEATURES CS collars High power rating: 16 W to 600 W at 25 C Heavy overloads 10 Pn 15 s 1 % Low ohmic values 0.10 available High long term stability drift < 1.5 % after 1000 h Excellent withstanding of thermal shock Mechanical strength Fire proof Compliant to RoHS Directive 2002/95/EC RSSD medium and high power resistors are noted for their ability to withstand heavy transient and severe shock and vibration conditions. They complement the ohmic range of Vishay styles RW, RWST and RA in the low value area, and can be tapped by means of adjustable collars. Standard RSSD resistors have a single adjustable collar. NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (our parts are made of metallic and refractory materials). DIMENSIONS in millimeters SCREWED STAINLESS STEEL 304 L COLLARS "CS" TYPE 1 WELDED STAINLESS STEEL 304 L COLLARS "AN" TYPE 1 Type 1 Type 2 Solded Screwed OC OC A Z F F A OC J P R OB D K P E OB 26 G H OQ M 15 L SCREWED STAINLESS STEEL 304 L COLLARS "CS" TYPE 2 OC A J 23 K OB 58 G H M 15 L RSSD SERIES CONNECTION 8 x 34 AN type1 10 x 50 AN type1 13 x 70 AN type1 16 x 94 AN type1 CS (1) 20 x 117 AN type1 Note (1) CS connections on request A2 OB MAX. OC MIN. D E F + 0.5 +0 P OQ R Z APPROX. 34 50 70 94 117 10 11.5 14.5 18 22 4.1 5 6.7 9.2 12.6 27 2 40 2 56 2 78 2 98 2 20 0.5 22 0.5 24 0.5 26.5 0.5 31 0.7 5 6.35 6.35 6.35 6.35 28 1 31 1 34 1 38 1 42 1 3.2 4.2 4.2 4.2 4.2 16 0.5 18 0.5 20 0.5 21 0.5 24 0.7 1 1.5 3.5 4 5 AVERAGE UNIT WEIGHT IN g 10 22 38 55 80 DIMENSIONS in millimeters RSSD SERIES 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 CONNECTIONS AN type1 AN type1 AN type1 AN type2 AN type2 CS type1 CS type1 CS type1 CS type2 CS type2 Document Number: 50020 Revision: 24-May-11 A2 138 168 250 370 373 OB MAX. 27 27 32 43 53 OC MIN. 16.4 16.4 21.3 22.3 27.1 D E 117 2 147 2 227 2.5 332 3 332 3 33.5 1 33.5 1 36 1 57 1.5 63 1.5 For technical questions, contact: sfer@vishay.com F + 0.5 +0 9 9 13 18 18 G-4 -0 199 229 317 432 432 H-4 -0 169 199 287 405 405 J 50 1.5 50 1.5 60 1.5 69 max. 80 max. www.vishay.com 121 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RSSD Adjustable Wirewound Vitreous Resistors Low Ohmic Values (0.10 available) Vishay Sfernice DIMENSIONS in millimeters RSSD SERIES 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 CONNECTIONS AN type1 AN type1 AN type1 AN type2 AN type2 CS type1 CS type1 CS type1 CS type2 CS type2 K L 0.5 M 0.5 P OQ R Z APPROX. 27 1 27 1 30 1 45 1 51 1.5 6.5 6.5 9 9 9 24 24 25 30 30 51 1.5 51 1.5 55 1.5 81.5 max. 92.5 max. 5.7 5.7 5.7 9.2 9.2 28.5 1 28.5 1 31 1 45 1.5 51 1.5 6 6 5 10 11.5 MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections Average Unit Weight AN 90 115 240 845 1270 CS 135 160 290 925 1350 ELECTRICAL SPECIFICATIONS Vishay Sfernice Special cement Nickel alloy wire AN collars CS supporting collars 10 g to 1350 g Resistance Range 0.12 to 560 (E12 series) Standard Resistance R 10 5 % Tolerance 1 R 10 10 % 0.1 R < 1 20 % Power Rating 14 W to 600 W at 25 C ENVIRONMENTAL SPECIFICATIONS Temperature Limits Climatic Category AVERAGE UNIT WEIGHT IN g - 55 C + 450 C - 55 C/+ 200 C/56 days Temperature Coefficient + 75 ppm/C (typical) PERFORMANCE CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS Short Time Overload 10 Pr during 5 s 2% 1% Climatic Sequence - 55 C + 200 C 5 cycles 3% 1% Load at 100 % Pr followed by cold - 55 C/15 2% or 0.05 1% 90/30 cycle 1000 h at Pr at + 25 C 5% 1.5 % TESTS Thermal Shock Load Life SPECIAL FEATURES RSSD TYPE 8 x 34 10 x 50 13 x 70 16 x 94 Continuous 16 W 25 W 42 W 70 W 100 W 140 W 200 W 280 W 450 W 600 W Reduced 14 W 22 W 38 W 62 W 90 W 125 W 170 W 240 W 360 W 450 W 0.12 10 0.12 22 0.12 43 0.33 75 0.22 100 0.10 150 0.12 220 0.22 360 0.47 470 0.68 560 Maximum Number of Additional Tapping 0 1 1 1 1 1 2 2 4 4 Reduction % of Ohmic Value by Tapping 23 21 14 11 10 8 6.5 6 5.7 5.7 Power Rating at 25 C Resistance Ohmic Range (E12, E24 Series) with 1 Tapping 20 x 117 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 ADDITIONAL TAPPINGS Are supplied with their adjustable collars fastened but not set to any specific value. Please note that, on request, all tappings can be adjusted by Vishay Sfernice. For adjustment purposes we would need to be advised of the ohmic values, and tolerances of the sections in successive order in addition to their sum Rn. The permissible maximum value for an adjustment should take into account the possible negative tolerance of Rn. Please consult Vishay Sfernice regarding the acceptable tolerance. www.vishay.com 122 For technical questions, contact: sfer@vishay.com Document Number: 50020 Revision: 24-May-11 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RSSD Adjustable Wirewound Vitreous Resistors Low Ohmic Values (0.10 available) Vishay Sfernice RECOMMENDATIONS FOR USE Maximum Current Strength: The ohmic value and the power decrease as the connections are brought together. To avoid overload, the maximum current strength that is permissible for Rn should never be exceeded: Pr Rn Imax. = POWER RATING TEMPERATURE RISE 80 60 40 0 0 100 200 300 400 D8 x3 4 SD 10 x5 RS 0 SD 13 x7 RS 0 SD 1 RS 6 x 94 SD 20 RS x1 S 17 RS D 2 SD 5 x 13 2 5 8 RS SD x 16 8 30 x2 RS 50 SD 40 RS x SD 37 0 50 x3 73 400 RS S RATED POWER IN % 100 300 RS HOT SPOT TEMPERATURE IN C 120 200 100 0 450 10 AMBIENT TEMPERATURE IN C 100 1000 RATED POWER IN W MARKING Vishay Sfernice trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date. ORDERING INFORMATION RSSD 10 x 50 MODEL STYLE SPECIAL DESIGN AN 10U 5% BA25 e CONNECTIONS OHMIC VALUE TOLERANCE PACKAGING LEAD (Pb)-FREE Custom items are subject to extra-charge and min. order. Please see price list. Method No Optional GLOBAL PART NUMBER INFORMATION R GLOBAL MODEL RSSD S S D 2 5 1 3 8 A 1 5 R 0 J B 1 5 SIZE LEADS OHMIC VALUE TOLERANCE PACKAGING SPECIAL 08 x 34 10 x 50 13 x 70 16 x 94 20 x 117 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 A = AN B=B C = CS F = Faston The three first digits are significant figures and the last digit specifies the number of zeros to follow. R designates decimal point. J=5% K = 10 % M = 20 % Standard packaging: BXX = Box, XXPCS (fixed qty depending on size) As applicable. Example: CB4 Document Number: 50020 Revision: 24-May-11 4700 = 470 48R5 = 48.5 R010 = 0.01 ... For technical questions, contact: sfer@vishay.com No standard packaging: B00 = Box, qty open www.vishay.com 123 This document is subject to change without notice. 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