LSR37 Vishay BCcomponents High Voltage Surge Resistor FEATURES High pulse-loading (10 kV as specified) capability (flashes) Good replacement for carbon-composite resistors Lead (Pb)-free solder contacts Pure Tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes Compatible with Restriction of the use of Hazardous Substances (RoHS) directive 2002/95/EC (issue 2004) A metal glazed film is deposited on a high grade ceramic body. After that caps are applied to the rods and tinned APPLICATIONS electrolytic copper wires are welded to these end caps. Application in overload and high voltage pulse hazard The resistors are coated with a light-blue lacquer which circuits (TV-sets, monitors), high power electronic ballasts provides electrical, mechanical and climatic protection. The encapsulation is resistant to all cleaning solvents according to MIL-STD 202E, method 215 and IEC 60068-2-45. TECHNICAL SPECIFICATIONS DESCRIPTION VALUE Resistance Range 47 to 820 1k to 10 k 47 to 180 : 20 % E12 series Resistance Tolerance and Series 220 to 10 k: 10 % 20 % E12 series Maximum Dissipation at T =70 C0.5W amb Thermal Resistance, R 120 K/W th -6 47 to 180 : 0 to + 1500 x 10 /K -6 Temperature Coefficient - 600 to + 200 x 10 /K -6 220 to 910 : 0 to + 600 x 10 /K -6 -6 Voltage Coefficient 0 to + 350 x 10 /V 50 x 10 /V Maximum Permissible Voltage V = Pn x R Dielectric Withstanding Voltage of the Insulation for 1 Min 700 V Basic Specifications IEC 60115-1B - Climatic Category (IEC 60068) 55/155/56 Stability After: Load (1000 h) R max.: (3.0 % R + 0.10 ) Climatic Test R max.: (3.0 % R + 0.10 ) Soldering R max.: (1.0 % R + 0.10 ) R/R max.: 20 % High Voltage Test for R-Value > 3.3 k, 10 kV 1 nF 50 x 12/Min (typical value 10 %) R/R max.: 20 % ESD Contact Discharge 12 kV 100 Pulses (typical value: 10 %) Last Digit of 12NC Indicating Resistance Decade 12NC INFORMATION The resistors have a 12-digit numeric code starting with RESISTANCE DECADE LAST DIGIT 2322 245 47 to 82 9 The subsequent 2 digits indicate the resistor type and 100 to 820 1 packing 1to 9.1 k 2 The remaining digits indicate the resistance value: 10 k 3 The first 2 digits indicate the resistance value 12NC Example The last digit indicates the resistance decade The 12NC for a LSR37, resistor value 1.5k, 10 % tolerance, supplied on a bandolier of 1000 units in ammopack, is: 2322 245 12152. www.vishay.com For technical questions, contact: filmresistors.leaded vishay.com Document Number: 28735 190 Revision: 21-Feb-08LSR37 High Voltage Surge Resistor Vishay BCcomponents 12NC - resistor type and packaging ORDERING CODE 2322 245 ..... TOLERANCE TYPE 1000 UNITS 5000 UNITS (%) IN AMMOPACK ON REEL 10 12... 22... LSR37 20 11... 21... PART NUMBER PART NUMBER: LSR3700001002KA100 L0S R 370001002KA100 (1) PACKAGING MODEL/SIZE SPECIAL CHARACTER TCR/MATERIAL VALUE TOLERANCE SPECIAL LSR3700 0 = Neutral 0 = Standard 3 digit value K = 10 % A1 The 2 digits M = 20 % 1 digit multiplier R5 are used for all Z = Value overflow MULTIPLIER special parts. -1 (Special) 9 = *10 0 00 = Standard 0 = *10 1 1 = *10 2 2 = *10 PRODUCT DESCRIPTION: LSR37 10 % A1 10K LSR37 10 % A1 10K (1) MODEL/SIZE TOLERANCE PACKAGING RESISTANCE VALUE LSR37 10 % A1 220R = 220 20 % R5 1K2 = 1.2 k Notes: (1) Please refer to table PACKAGING The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products PACKAGING CODE PIECES DESCRIPTION MODEL/SIZE A1 1000 Bandolier in ammopack straight leads LSR37 R5 5000 Bandolier on reel straight leads Document Number: 28735 For technical questions, contact: filmresistors.leaded vishay.com www.vishay.com Revision: 21-Feb-08 191