General Note

IRC reserves the right to make changes in product specification without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print.

A subsidiary of

TT electronics plc

Issue October 2008

55

••••• Flameproof

••••• Meets overload test of UL#1412

••••• Meets solvent test of method 215 of MIL-STD-202

••••• Low cost alternative for power carbon composition

and wirewounds

••••• TCR ±200 ppm

••••• Coating meets UL-94V-0

Telephone: 361-992-7900

Nominal Resistance (ohms)

Current Noise

Ambient Temperature (°C)

Power - Temperature Derating

MO SERIES

METAL OXIDE RESISTORS

Surface Temperature Rise vs Load

Load Factor(%)

0

25

50

75

100

150

100

50

0

MO1

MO2

MO3

MO1/2

DIMENSIONS (Inches and (mm)):

MO 1/2

MO 1

MO 2

MO 3

MO 5

A

1.10±0.08 (28.0±2.0)

1.10±0.08 (28.0±2.0)

1.50±0.12 (38.0±3.0)

1.50±0.12 (38.0±3.0)

1.50±0.12 (38.0±3.0)

B

0.35±0.04 (9.0±1.0)

0.43±0.04 (11.0±1.0)

0.59±0.02 (15.0±0.5)

0.98±0.04 (25.0±2.0)

1.61±0.04 (41.0±1.0)

C

0.028±0.002 (0.70±0.05)

0.028±0.002 (0.70±0.05)

0.031±0.002 (0.80±0.05)

0.031±0.002 (0.80±0.05)

0.031±0.002 (0.80±0.05)

D

0.12±0.02 (3.0±0.5)

0.16±0.02 (4.0±0.5)

0.22±0.04 (5.5±1.0)

0.34±0.04 (8.5±1.0)

0.34±0.04 (8.5±1.0)

PACKAGING:

MO 1:

2500/reel

MO 2:

1000/reel

MO 3:

1000/ammo box

MO 5:

1000/bulk box

All Above:

1000/bulk box

PERFORMANCE CHARACTERISTICS (Tested Per MIL-R-22684 Rev. C):

ELECTRICAL

Power Ratings @ 70°C (watts)

Derated to 0 Load at

Maximum Working Voltage (volts)

Operating Temperature Range

Resistance Range (ohms)

Moisture Resistance

Thermal Shock

Load Life @ 70°C - 1000 hrs.

Shock and Vibration

Resistance to Soldering Heat

Terminal Strength

Dielectric Withstand Voltage

Maximum Pulse Voltage

Insulation Resistance

Voltage Coefficient

Short Time Overload

MO 1/2

1/2

200°C

250

-55°C to +200°C

0.1 - 75K (±5%)

0.1 - 75K (±1%)

±1.5%

±1%

±2%

±0.5%

±0.55+0.05

Ω

±0.5%

400V RMS

400V

10,000 meg min.

0.001%/V

±(0.5+0.05Ω)

MO 1

1

200°C

350

-55°C to +200°C

0.1 - 120K (±5%)

0.1 - 100K (±1%)

±1.5%

±1%

±2%

±0.5%

±0.55+0.05

Ω

±0.5%

700V RMS

750V

10,000 meg min.

0.001%/V

±(0.5+0.05Ω)

MO 2

2

200°C

350

-55°C to +200°C

0.1 - 150K (±5%)

0.1 - 120K (±1%)

±1.5%

±1%

±2%

±0.5%

±0.55+0.05

Ω

±0.5%

700V RMS

1000V

10,000 meg min.

0.001%/V

±(0.5+0.05Ω)

MO 3

3

200°C

500

-55°C to +200°C

1 - 150K (±5%)

10 - 10K (±1%)

±1.5%

±1%

±2%

±0.5%

±0.55+0.05

Ω

±0.5%

800V RMS

1500V

10,000 meg min.

0.001%/V

±(0.5+0.05Ω)

MO 5

5

200°C

750

-55°C to +200°C

1 - 180K (±5%)

10 - 10K (±1%)

±1.5%

±1%

±2%

±0.5%

±0.55+0.05

Ω

±0.5%

800V RMS

1500V

10,000 meg min.

0.001%/V

±(0.5+0.05Ω)

Environmental (Operating Temperature Range: -55°C to +200°C)

••••• Only available in RoHS compliant version

HOW TO ORDER:

Sample Part No.:

MO-1 1001 J

IRC Type

Size

Resistance Value

3 digit range and

1 digit multiplier

Tolerance

J = 5%, F = 1%

RoHS Compliance

LF

LF = RoHS compliant construction