LR www.vishay.com Vishay Dale Thin Film Lead (Pb)-Free Thick Film, Wraparound Low Value Resistor (R = 0.25 ) FEATURES • Metal glaze on high quality ceramic Available • Protective overglaze • Lead (Pb)-free solder contact on Ni barrier layer • Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes e3 • Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 STANDARD ELECTRICAL SPECIFICATIONS MODEL CASE SIZE INCH CASE SIZE METRIC POWER RATING (1) P70 W LIMITING ELEMENT VOLTAGE MAX. V TEMPERATURE COEFFICIENT ± ppm/°C TOLERANCE ±% RESISTANCE VALUE LR 2512 6332 2.0 P x R 300 1 0.25 Note (1) CECC 40401-802/EIA-575 DERATING PARAMETER UNIT 2512 Power rating W 2.0 Limiting element voltage V P x R Insulation voltage (1 min) Vpeak > 300 Thermal resistance K/W 45 Insulation resistance > 109 Temperature range °C - 55 to + 125 Weight/1000 pieces g 40.5 Rated Power in % TECHNICAL SPECIFICATIONS 100 80 60 40 20 0 0 20 40 60 70 80 100 125 140 Ambient Temperature in °C PERFORMANCE TEST CONDITIONS OF TEST REQUIREMENTS (2) Endurance test at 70 °C IEC 60115-1, 4.25.1 1000 h at 70 °C, 1.5 h “ON”, 0.5 h “OFF” Endurance at UCT IEC 60115-1, 4.25.3 1000 h at 125 °C without load Overload test IEC 60115-1, 4.13 Short time overload for 2 s ±1% Thermal shock IEC 60115-1, 4.19; IEC 60068-2-14 Rapid change between upper and lower category temperature ±1% Damp heat steady state IEC 60115-1, 4.24; IEC 60068-2-3 56 days at 40 °C and 93 % relative humidity ±2% Resistance to soldering heat IEC 60115-1, 4.18; IEC 60068-2-20 10 s at 260 °C solder bath temperature ±1% ±2% ± 0.5 % Note (2) Limits for change of resistance at test. Revision: 24-Jul-13 Document Number: 20055 1 For technical questions, contact: [email protected] 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 LR www.vishay.com Vishay Dale Thin Film DIMENSIONS in inches (millimeters) CASE SIZE 2512 L W H T1 T2 0.248 ± 0.008 (6.3 ± 0.2) 0.124 ± 0.006 (3.15 ± 0.15) 0.024 ± 0.004 (0.6 ± 0.1) 0.024 ± 0.008 (0.6 ± 0.2) 0.024 ± 0.008 (0.6 ± 0.2) PART NUMBER AND PRODUCT DESCRIPTION New Global Part Numbering: LR-2512MR250FSTS L R 2 5 1 2 M R 2 5 0 F S T S GLOBAL MODEL CASE SIZE TCR OHMIC VALUE TOLERANCE TERMINATION PACKAGING LR = Low value wraparound chip resistor 2512 M= ± 300 ppm/°C R250 F = ± 1.0 % S = Lead (Pb)-free (e3) Tape and reel T0 = 100 min., 100 mult T1 = 1000 min., 1000 mult T3 = 300 min., 300 mult T5 = 500 min., 500 mult TF = Full reel 2000 TS = 100 min., 1 mult Example: LR2512MR250FSTS is a 2512 case size wraparound chip resistor 0.25 , 1 % tolerance , with lead (Pb)-free terminations Revision: 24-Jul-13 Document Number: 20055 2 For technical questions, contact: [email protected] 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 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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 in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000