Resistors Make Possible Metal Glaze High Power Density Surface Mount Power Resistor MRC Series TM Metal Glaze High Power Density MRC Series Surface Mount Power Resistor 1/2 watt in 1/8 wa tt package Metal Glaze thick film MRC1/2: 0.05 to 1.0 (contact factor y for higher values) element fired at 1000C to 1/2 watt in 1/8 watt package solid ceramic substrate 150C maximum operating temperature 1 watt in 1/2 watt package (2010 footprint) Superior surge handling capability MRC1/2: 0.05 to 1.0 (contact factory for higher values) RoHS compliant Versions available 150C maximum operating temperature High temperature dielectric coating Superior surge handling capability All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2) 60/40 Solder over nickel barrier Electrical Data Size Industry IRC Max. Working Max. Resistance Tolerance TCR Product 1 2 3 3 3 Code Footprint Type Power Rating Voltage Voltage Range (ohms) (%) (ppm/C) Catagory 0.1 to 0.99 1,2,5 100 Low Range C 1206 MRC1/2 1/2W 70C 200 400 1.0 to 10K 1,2,5 50,100 Standard 20 to 10K 0.25, 0.5 50,100 Tight Tolerance MRC Applications: The MRC1/2 will dissipate 1/2 watt at 70C on a 1206 footprint. The MRC is recommended for applications where board real estate is a major concern. Due to high power density and superior surge handling capability, it is also recommended as a direct replacement on existing board designs where standard 1206 resistors are marginal or failing. Environmental Data Characteristics Maximum Change Test Method Temperature Coef cient As speci ed MIL-R-55342E Par 4.7.9 (-55C + 125C) Thermal Shock (0.5% + 0.01) MIL-R-55342E Par 4.7.3 (-65C + 150C, 5 cycles) Low Temperature Operation (0.25% + 0.01) MIL-R-55342E Par 4.7.4 (-65C working voltage) MIL-R-55342E Par 4.7.5 Short Time Overload (1.0% + 0.01) 2.5 x PxR for 5 seconds High Temperature Exposure (0.5% + 0.01) MIL-R-55342E Par 4.7.6 (+150C for 100 hours) MIL-R-55342E Par 4.7.7 Resistance to Bonding Exposure (0.25% + 0.01) (Re ow soldered to board at 260C for 10 seconds) Solderability 95% minimum coverage MIL-STD-202, Method 208 (245C for 5 seconds) Moisture Resistance (0.5% + 0.01) MIL-R-55342E Par 4.7.8 (10 cycles, total 240 hours) Life Test (1.0% + 0.01) MIL-R-55342E Par 4.7.10 (2000 hours 70C intermittent) (1% + 0.01) 1200 gram push from underside of mounted chip Terminal Adhesion Strength no mechanical damage for 60 seconds (1% + 0.01) Chip mounted in center of 90mm long board, de ected 5mm Resistance to Board Bending so as to exert pull on chip contacts for 10 seconds no mechanical damage General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronicsresistors.com TT Electronics plc 01.16Metal Glaze High Power Density Surface Mount Power Resistor Make Possible MRC Series Physical Data L C MRC Series TM Metal Glaze High Power Density W Surface Mount Power Resistor MRC Series Dimensions (Inches and (mm)) TM Industry Metal Glaze High Power Density IRC Type Size Code Footprint Actual Size L W C Repetitive Surge Curve Power Derating Curve Surface Mount Power Resistor 0.128 0.007 0.063 0.010 0.020 0.010 MRC 1/2 C 1206 1000 (3.25 0.18) (1.60 0.25) (0.51 0.25) 100 Repetitive Surge Curve Power Derating Curve 100 1000 60 100 MRC 1/2 0 10 25 70 150 100 60 Ambient Temperature (C) MRC 1/2 0 1 10 25 70 150 0.0001 0.001 0.01 0.1 1 Ambient Temperature (C) Surge or Pulse Duration (seconds) Note: Use for repetitive pulses where the average power dissipation is not to exceed the component rating at 70C. Surge handling capacity 1 for low-repetitive surges may be significantly greater than shown above. 0.0001 0.001 0.01 0.1 1 Contact factory for recommendations. Surge or Pulse Duration (seconds) Note: Use for repetitive pulses where the average power dissipation is not to exceed the component rating at 70C. Surge handling capacity for low-repetitive surges may be significantly greater than shown above. Contact factory for recommendations. Ordering Data MRC1/2 100 1000 F 13 LF Sample Part No. IRC Type (MRC 1/2) Ordering Data Temperature Coef cient 50 ppm, 100 ppm, 200 ppm MRC1/2 100 1000 F 13 LF Sample Part No. Resistance Value (100 and greater - First 3 signi cant gures plus 4th digit multiplier) Example: 100 = 1000, 1000 = 1001, 150,000 = 1503 IRC Type (Less than 100 - is used to designate decimal) (MRC 1/2) Example: 51 = 51R0, 1 = 1R00, 0.25 = R250 Temperature Coef cient Tolerance 50 ppm, 100 ppm, 200 ppm (C = 0.25%, D = 0.5%, F = 1.0%, G = 2.0%, J = 5.0%) Resistance Value Packaging Code* (100 and greater - First 3 signi cant gures plus 4th digit multiplier) (BLK = Bulk, 7 = 7 Reel, 13 = 13 Reel) Example: 100 = 1000, 1000 = 1001, 150,000 = 1503 (Less than 100 - is used to designate decimal) RoHS Compliance Example: 51 = 51R0, 1 = 1R00, 0.25 = R250 LF = RoHS compliant version Tolerance (C = 0.25%, D = 0.5%, F = 1.0%, G = 2.0%, J = 5.0%) General Note Packaging Code* TT Electronics reserves the right to make changes in product specification without notice or liability. (BLK = Bulk, 7 = 7 Reel, 13 = 13 Reel) All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronicsresistors.com RoHS Compliance LF = RoHS compliant version TT Electronics plc 01.16 IRC Wirewound and Film Technologies Division 4222 South Staples Street Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Website: www.irctt.com MRC Series Issue April 2010 Sheet 2 of 2 IRC Wirewound and Film Technologies Division 4222 South Staples Street Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Website: www.irctt.com MRC Series Issue April 2010 Sheet 2 of 2 Peak Power (watts) Peak Power (watts) % Of Rated Power % Of Rated Power