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Metal Glaze™ High Power Density Surface Mount Power Resistor MRC Series 1/2 watt in 1/8 watt package MRC1/2: 0.05 Ω to 1.0 Ω (contact factory for higher values) 150°C maximum operating temperature Superior surge handling capability RoHS compliant Versions available

  • 1/2 watt in 1/8 watt package
  • 1 watt in 1/2 watt package (2010 footprint)
  • MRC1/2: 0.05 Ω to 1.0 Ω (contact factory for higher values)
  • 150°C maximum operating temperature
  • Superior surge handling capability Metal Glaze™ thick film element fired at 1000°C to solid ceramic substrate High temperature dielectric coating 60/40 Solder over nickel barrier Environmental Data MRC Series Metal Glaze TM High Power Density Surface Mount Power Resistor MRC Applications: The MRC1/2 will dissipate 1/2 watt at 70°C 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. dohteM tseTegnahC mumixaMscitsiretcarahC Temperature Coeffi cient As specifi ed MIL-R-55342E Par 4.7.9 (-55°C + 125°C) Thermal Shock ±(0.5% + 0.01Ω) MIL-R-55342E Par 4.7.3 (-65°C + 150°C, 5 cycles) Low Temperature Operation ±(0.25% + 0.01Ω) MIL-R-55342E Par 4.7.4 (-65°C @ working voltage) Short Time Overload ±(1.0% + 0.01Ω) MIL-R-55342E Par 4.7.5 2.5 x PxR for 5 seconds High Temperature Exposure ±(0.5% + 0.01Ω) MIL-R-55342E Par 4.7.6 (+150°C for 100 hours) Resistance to Bonding Exposure ±(0.25% + 0.01Ω) MIL-R-55342E Par 4.7.7 (Refl ow soldered to board at 260°C for 10 seconds) Solderability 95% minimum coverage MIL-STD-202, Method 208 (245°C for 5 seconds) Moisture Resistance ±(0.5% + 0.01Ω) MIL-R-55342E Par 4.7.8 (10 cycles, total 240 hours) Life Test ±(1.0% + 0.01Ω) MIL-R-55342E Par 4.7.10 (2000 hours @ 70°C intermittent) Terminal Adhesion Strength ±(1% + 0.01Ω) no mechanical damage 1200 gram push from underside of mounted chip for 60 seconds Resistance to Board Bending ±(1% + 0.01Ω) no mechanical damage Chip mounted in center of 90mm long board, defl ected 5mm so as to exert pull on chip contacts for 10 seconds Size Code1 Industry Footprint IRC Type Max. Power Rating Working Voltage2 Max. Voltage Resistance Range (ohms)3 Tolerance (±%)3 TCR (ppm/°C)3 Product Catagory C 1206 MRC1/2 1/2W @ 70°C 200 400 0.1 to 0.99 1,2,5 100 Low Range 1.0 to 10K 1,2,5 50,100 Standard 20 to 10K 0.25, 0.5 50,100 Tight Tolerance Electrical Data Resistors Make Possible 01.16 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. © TT Electronics plc www.ttelectronicsresistors.com All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)

Metal Glaze™ High Power Density Surface Mount Power Resistor MRC Series

  • 4222 South Staples Street • Corpus Christi Texas 78411 USA© IRC Wirewound and Film Technologies Division Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com MRC Series Metal Glaze TM High Power Density Surface Mount Power Resistor MRC Series Issue April 2010 Sheet 2 of 2 Sample Part No. IRC Type (MRC 1/2) Temperature Coeffi cient 50 ppm, 100 ppm, 200 ppm Resistance Value (100Ω and greater - First 3 signifi cant fi gures plus 4th digit multiplier) Example: 100Ω = 1000, 1000Ω = 1001, 150,000Ω = 1503 (Less than 100Ω - "R" is used to designate decimal) Example: 51Ω = 51R0, 1Ω = 1R00, 0.25Ω = R250 Tolerance Packaging Code* (BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel) RoHS Compliance LF = RoHS compliant version Ordering Data Power Derating CurveRepetitive Surge Curve MRC 1/2 100 1000 0.0001 0.001 0.01 0.1 1 Surge or Pulse Duration (seconds) Peak Power (watts) Note: Use for repetitive pulses where the average power dissipation is not to exceed the component rating at 70°C. Surge handling capacity for low-repetitive surges may be significantly greater than shown above. Contact factory for recommendations. 0510752 100 aR fO ted rewoP Ambient Temperature (°C) MRC1/2 100 1000 F 13 LF
  • 4222 South Staples Street • Corpus Christi Texas 78411 USA© IRC Wirewound and Film Technologies Division Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com MRC Series Metal Glaze TM High Power Density Surface Mount Power Resistor MRC Series Issue April 2010 Sheet 2 of 2 Sample Part No. IRC Type (MRC 1/2) Temperature Coeffi cient 50 ppm, 100 ppm, 200 ppm Resistance Value (100Ω and greater - First 3 signifi cant fi gures plus 4th digit multiplier) Example: 100Ω = 1000, 1000Ω = 1001, 150,000Ω = 1503 (Less than 100Ω - "R" is used to designate decimal) Example: 51Ω = 51R0, 1Ω = 1R00, 0.25Ω = R250 Tolerance Packaging Code* (BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel) RoHS Compliance LF = RoHS compliant version Ordering Data Power Derating CurveRepetitive Surge Curve MRC 1/2 100 1000 0.0001 0.001 0.01 0.1 1 Surge or Pulse Duration (seconds) Peak Power (watts) Note: Use for repetitive pulses where the average power dissipation is not to exceed the component rating at 70°C. Surge handling capacity for low-repetitive surges may be significantly greater than shown above. Contact factory for recommendations. 0510752 100 aR fO ted rewoP Ambient Temperature (°C) MRC1/2 100 1000 F 13 LF Make Possible 01.16 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. © TT Electronics plc www.ttelectronicsresistors.com Physical Data IRC Type Size Code Industry Footprint Actual Size Dimensions (Inches and (mm)) L W C MRC 1/2 C 1206 0.128 ± 0.007 (3.25 ± 0.18) 0.063 ± 0.010 (1.60 ± 0.25) 0.020 ± 0.010 (0.51 ± 0.25) L C W