MPR24 Vishay BCcomponents Ultra Precision Leaded Resistors FEATURES Ultra high precision resistors Ultra high stability Ultra low temperature coefficient. APPLICATIONS Test and measurement Telecom. DESCRIPTION A homogeneous film of metal alloy is deposited on a high grade ceramic body. After a helical groove has been cut in the resistive layer, tinned connecting wires of electrolytic copper are welded to the end-caps. The resistors are coated with lacquer which provides electrical, mechanical, and climatic protection. TECHNICAL SPECIFICATIONS DESCRIPTION MPR24 CECC size B Resistance range 4.99 to 1 M Resistance tolerance 0.05 % 0.02 % 0.01 % 0.5 % 0.25 % 0.1 % Temperature coefcient 25 ppm/K 15 ppm/K 10 ppm/K 05 ppm/K Climatic category (LCT/UCT/days) 55/125/56 55/155/56 Max. rated dissipation, P 0.125 W 0.25 W 70 Operating voltage, U AC/DC 250 V max Film temperature 125 C 155 C Max. resistance change for resistance range, R/R max., after: load (0.05 % + 0.01 ) climatic tests (0.05 % + 0.01 ) soldering (0.01 % + 0.01 ) short time overload (0.01 % + 0.01 ) Permissible voltage against ambient : 1 minute 500 V continuous 75 V 9 Failure rate 0.3 10 /h ORDERING INFORMATION - type description and ordering code MPR24 TC 10 0.1 % 1000 UNITS 47 K TYPE TEMPERATURE COEFFICIENT TOLERANCE PACKAGING RESISTANCE VALUE 05 ppm/K 0.01 % Number of Units See Temperature Coefcient and 10 ppm/K 0.02 % Resistance Range Table 15 ppm/K 0.05 % 25 ppm/K 0.1 % 0.25 % 0.5 % Note: We recommend that the clear text ordering code is used to minimize the possibility of errors in order handling. Document Number: 28727 For technical questions contact: ff3cresistors vishay.com www.vishay.com Revision: 08-Mar-04 1 MPR24 Vishay BCcomponents Ultra Precision Leaded Resistors DIMENSIONS L D I M I d DIMENSIONS - leaded resistor types, mass and relevant physical dimensions d D L I M MASS max max nom min min TYPE (mm) (mm) (mm) (mm) (mm) (mg) MPR 24 2.5 6.3 0.6 28.0 7.5 220 (1) SCRIPT MARKING TEMPERATURE COEFFICIENT AND TOLERANCE - printed resistance value and letter coding RESISTANCE TOL. LETTER TC LETTER VALUE (%) CODE (ppm/K) CODE Clear text code for value 0.5 D 25 E 0.25 C 15 F 0.1 B 10 B 0.05 A 05 A 0.02 P - - 0.01 T - - Note 1. Resistors of T.C. 25 ppm/K in combination with tolerances 0.5 %, 0.25 % and 0.1 % are only available with colour coding in accordance with IEC 60062. www.vishay.com For technical questions contact: ff3cresistors vishay.com Document Number: 28727 2 Revision: 08-Mar-04