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 RoHS COMPLIANT 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. DIMENSIONS WELDED STAINLESS STEEL 304 L COLLARS "AN" TYPE 1 Type 1 Solded C A Z F F R B D Type 2 Screwed C P Q SCREWED STAINLESS STEEL 304 L COLLARS "CS" TYPE 1 A C J 26 M Connection 15 L SCREWED STAINLESS STEEL 304 L COLLARS "CS" TYPE 2 A C J K B G H 58 M 15 L www.vishay.com 70 10 x 50 AN type 1 AN type 1 13 x 70 16 x 94 20 x 117 AN AN AN type 1 type 1 type 1 CS* 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 05 22 0.5 24 0.5 26.5 0.5 31 0.7 A2 O B max. O C min. D E F + 0.5 5 6.35 6.35 +0 P 28 1 31 1 34 1 OQ 3.2 4.2 4.2 R 16 0.5 18 0.5 20 0.5 Z approx. 1 1.5 3.5 Average unit AN 10 22 38 weight in g * CS connections on request RSSD STYLE B 23 8 x 34 6.35 6.35 38 1 4.2 21 0.5 4 42 1 4.2 24 0.7 5 55 80 DIMENSIONS in millimeters K G H RSSD STYLE Connection P E DIMENSIONS in millimeters 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 AN AN AN AN AN type 1 type 1 type 1 type 2 type 2 CS CS CS CS CS type 1 type 1 type 1 type 2 type 2 138 168 250 370 373 27 27 32 43 53 16.4 16.4 21.3 22.3 27.1 117 2 147 2 227 2.5 332 3 332 3 33.5 1 33.5 1 36 1 57 1.5 63 1.5 A2 O B max. O C min. D E F + 0.5 9 9 13 18 18 +0 G -4 199 229 317 432 432 -0 H -4 169 199 287 405 405 -0 J 50 1.5 50 1.5 60 1.5 69 max. 80 max. K 27 1 27 1 30 1 45 1 51 1.5 L 0.5 6.5 6.5 9 9 9 M 0.5 24 24 25 30 30 P 51 1.5 51 1.5 55 1.5 81.5 max. 92.5 max. OQ 5.7 5.7 5.7 9.2 9.2 R 28.5 1 28.5 1 31 1 45 1.5 51 1.5 Z approx. 6 6 5 10 11.5 Average unit AN 90 115 240 845 1270 weight in g CS 135 160 290 925 1350 For technical questions, contact: sfer@vishay.com Document Number: 50020 Revision: 25-Jul-07 RSSD Adjustable Wirewound Vitreous Resistors Low Ohmic Values (0.10 available) MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections Average Unit Weight Vishay Sfernice ELECTRICAL SPECIFICATIONS Vishay Sfernice Special cement nickel alloy wire AN collars CS supporting collars 10 to 1350 g Resistance Range 0.12 to 560 (E12 series) Standard Resistance R 10 5 % Tolerance 1 R 10 10 % 0R1 R < 1 20 % Power Rating 14 W to 600 W at 25 C ENVIRONMENTAL SPECIFICATIONS Temperature Limits Climatic Category - 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. 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: Imax = Pr/Rn Document Number: 50020 Revision: 25-Jul-07 For technical questions, contact: sfer@vishay.com www.vishay.com 71 RSSD Adjustable Wirewound Vitreous Resistors Low Ohmic Values (0.10 available) Vishay Sfernice POWER RATING CHART % RATED POWER 100 80 60 40 0 0 100 200 300 400 450 AMBIENT TEMPERA TURE IN C RS S HOT SPOT TEMPERATURE IN C 400 300 RS D8 x3 4 SD 10 x5 RS 0 SD 13 x7 RS 0 SD 1 RS 6 x 9 SD 4 20 RS x1 S 17 RS D 2 SD 5 x 13 2 5 8 RS S D x 16 8 30 x2 RS 50 SD 40 RS x3 SD 70 50 x3 73 TEMPERATURE RISE 200 100 0 10 100 1000 RATED POWER IN W MARKING SFERNICE trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date. ORDERING INFORMATION RSSD 10 x 50 MODEL STYLE AN SPECIAL DESIGN 10U CONNECTIONS Method N Optional 5% BA25 e TOLERANCE PACKAGING LEAD (Pb)-FREE Custom items are subject to extra charge and min. order. Please see price list. SAP PART NUMBERING GUIDELINES RSSD 10 x 50 A 10R0 J S06 MODEL STYLE CONNECTIONS OHMIC VALUE TOLERANCE PACKAGING www.vishay.com 72 For technical questions, contact: sfer@vishay.com Document Number: 50020 Revision: 25-Jul-07 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