PR01/02/03 Vishay BCcomponents Power Metal Film Resistors FEATURES High power in small packages (1 W/0207 size to 3 W/0617 size) Different lead materials for different applications Defined interruption behaviour 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) APPLICATIONS All general purpose power applications 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 or copper-clad iron are welded to the end-caps. The resistors are coated with a red, nonflammable lacquer which provides electrical, mechanical and climatic protection. This coating is not resistant to aggressive fluxes. The encapsulation is resistant to all cleaning solvents in accordance with MIL-STD-202E, method215, and IEC 60068-2-45. TECHNICAL SPECIFICATIONS VALUE DESCRIPTION PR02 PR03 PR01 Cu-lead FeCu-lead Cu-lead FeCu-lead (2) Resistance range 0.22 to1M 0.33 to1M 1 to1M 0.68 to1M 1 to 1 M (1) Resistance tolerance and series 1 % (E24, E96 series) 5 % (E24 series) Maximum dissipation at T =70 C: amb R <1 0.6 W 1.2 W 1.6 W 1 R 1W 2W 1.3W 3W 2.5 W Thermal resistance (R ) 135 K/W 75 K/W 115 K/W 60 K/W 75 K/W th -6 Temperature coefficient 250 x 10 /K Maximum permissible voltage 350 V 500 V 750 V (DC or RMS) Basic specifications IEC 60115-1 and 60115-4 Climatic category (IEC 60068) 55/155/56 Stability after: load R max.: (5 %R + 0.1 ) climatic tests R max.: (3 %R + 0.1 ) soldering R max.: (1 %R + 0.05 ) Notes: (1) 1 % tolerance is available for R -range from 1 R upwards. n (2) Ohmic values (other than resistance range) are available on request. R value is measured with probe distance of 24 1 mm using 4- terminal method. www.vishay.com For technical questions, contact: ff3dresistors vishay.com Document Number: 28729 106 Revision: 06-Dec-07PR01/02/03 Power Metal Film Resistors Vishay BCcomponents 12NC INFORMATION The resistors have a 12-digit numeric code starting with 23 Last Digit of 12NC Indicating Resistance Decade For 5 % tolerance: RESISTANCE DECADE LAST DIGIT 0.22 to 0.91 7 The next 7 digits indicate the resistor type and packing 1to9.76 8 The remaining 3 digits indicate the resistance value: 10 to 97.6 9 The first 2 digits indicate the resistance value 100 to 976 1 The last digit indicates the resistance decade 1to9.76k 2 10 to 97.6 k 3 For 1 % tolerance: 100 to 976 k 4 The next 6 digits indicate the resistor type and packing 1M 5 The remaining 4 digits indicate the resistance value: 12NC Example The first 3 digits indicate the resistance value The 12NC for resistor type PR02 with Cu leads and a value The last digit indicates the resistance decade of 750 with 5 % tolerance, supplied on a bandolier of 1000 units in ammopack, is: 2306 198 53751. (1) 12NC - resistor type and packaging . Preferred types in bold ORDERING CODE 23...... (BANDOLIER) AMMOPACK REEL LEAD TOL TYPE STRAIGHT LEADS mm (%) RADIAL TAPED 52 mm 52 mm 63 mm 52 mm 4000 units 3000 units 5000 units 1000 units 500 units 5000 units PR01 Cu 0.6 1 22 196 1.... 06 191 2.... 06 191 5.... 5 06 197 03... 22 193 14... 06 197 53... 06 197 23... PR02 Cu 0.8 1 22 197 2.... 22 197 1.... 06 192 5.... 5 06 198 03... 06 198 53... 06 198 23... FeCu 0.6 5 22 194 54... PR03 Cu 0.8 5 22 195 14... 1 06 199 6... FeCu 0.6 5 22 195 54... Notes: (1) Other packaging versions are available on request. 12NC - resistor type and packaging. Preferred types in bold ORDERING CODE 23...... (LOOSE IN BOX) LEAD TOL DOUBLE KINK TYPE (2) (3) (4) mm (%) PITCH = 17.8 mm PITCH = 25.4 mm PITCH 1000 units 500 units 1000 units 500 units PR01 Cu 0.6 5 22 193 03... (2) FeCu 0.6 5 22 193 43... 22 193 53... PR02 Cu 0.8 5 22 194 23... FeCu 0.6 5 22 194 83... (3) FeCu 0.8 5 22 194 63... PR03 Cu 0.8 5 22 195 23... FeCu 0.6 5 22 195 83... (4) FeCu 0.8 5 22 195 63... Notes: (2) PR01 pitch 12.5 mm. (3) PR02 pitch 15.0 mm. (4) PR03 pitch 20.0 mm, with reversed kinking direction as opposed to the drawing for the type with double kink figure. Document Number: 28729 For technical questions, contact: ff3dresistors vishay.com www.vishay.com Revision: 06-Dec-07 107