Metal Glaze™ High Power Density
Surface Mount Power Resistor
MRC Series
1/2wain1/8wapackage
MRC1/2:0.05Ωto1.0Ω(contactfactoryforhighervalues)
150°Cmaximumoperang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 GlazeTM 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.
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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
C1206 MRC1/2 1/2W @ 70°C200 400
0.1 to 0.99 1,2,5 100 Low Range
1.0 to 10K 1,2,5 50,100 Standard
20 to 10K0.25, 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 specication 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Direcve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 GlazeTM 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
(C = 0.25%, D = 0.5%, F = 1.0%, G = 2.0%, J = 5.0%)
Packaging Code*
(BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel)
RoHS Compliance
LF = RoHS compliant version
Ordering Data
Power Derating Curve
Repetitive Surge Curve
MRC 1/2
1
10
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
60
0
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 GlazeTM 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
(C = 0.25%, D = 0.5%, F = 1.0%, G = 2.0%, J = 5.0%)
Packaging Code*
(BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel)
RoHS Compliance
LF = RoHS compliant version
Ordering Data
Power Derating Curve
Repetitive Surge Curve
MRC 1/2
1
10
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
60
0
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 specication 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
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
TT Electronics:
MRC1/2100-51R0-FTR MRC1/21002201JLF MRC1-100-2500-F-7 MRC1/2-100-1001-F-7 MRC1/2-100-1000-F-7
MRC1/2-100-1002-F-7 MRC1/2-100-10R0-F-7 MRC1/2-100-1R0-F-7 MRC1-100-25R0-F-7 MRC1/2-100-75R0-F-7
MRC1/2-100-1500-F-7