• 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

Density Surface Mount

Power Resistor

MRC Series Issue June 2008 Sheet 2 of 2

Sample Part No.

MRC1/2 - 100 - 1000 - F - 13

IRC Type

(MRC 1/2 & MRC 1)

Temperature Coefficient

50 ppm, 100 ppm, 200 ppm

Resistance Value

(100

Ω and greater - First 3 significant figures plus 4th digit multiplier)

Example: 100

Ω = 1000, 1000Ω = 1001, 150,000Ω = 1503

(Less than 100

Ω - "R" is used to designate decimal)

Example: 51

Ω = 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)

Ordering Data

Power Derating Curve

Repetitive Surge Curve

MRC 1

MRC 1/2

1

10

100

1000

0.0001

0.001

0.01

0.1

1

Surge or Pulse Duration (seconds)

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.

25

70

150

100

60

0

Ambient Temperature (°C)