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MP800 Series Kool-Pak ? Power Film Resistors

TO-220 Style and TO-126 Style - Non-Inductive Designs

Use your thermal design experience with power semiconductors in TO-220 and

TO-126 style power packages to help you get the most out of this unique family of

power resistors. The thermal design issues are the same where power handling

capability is based on the case temperature which is maintained in your design.

Page 1 of 2

MP820 and MP821 TO-220 Style Power Package

with Metal Mounting Tab

? 20 Watts at +25°C Case Temperature derated to zero at +175°C.

? Metal Heat Sink Mounting Tab.

? MP820 Resistance Range of 10.0 ohm to 10.0 K.

? MP821 Resistance Range of 0.020 ohm to 9.99 ohm.

? Resistor element is electrically isolated from the mounting surface.

? Non-Inductive design for high speed switching, snubbers,

and rf applications.

Construction of MP820 and MP821:

The MP820 and MP821 Kool-Tab ? Power Film Resistors are constructed with Caddock's

Micronox ? resistance ?lm ?red onto a ?at ceramic substrate which is thermally bonded to

the copper heat sink tab. The resistor body is then molded with a high temperature

molding compound to ?nish the metal tab TO-220 package. The lead wire attachment

and resistance element geometry are con?gured to provide outstanding non-inductive

performance.

MP825 and MP850 Power Film Resistors

Include an Integral Metal Mounting Surface

for Highly Ef?cient Thermal Transfer

MP825 TO-126 Style Power Package

MP821 Standard Resistance Values:

Tolerance MP821: ±1% Standard (0.5%, 2%, 5%, 10%, and 20%

are available for most resistance values).

0.020 Ω 0.050 Ω 0.25 Ω 0.75 Ω 3.00 Ω 7.50 Ω

0.025 Ω 0.075 Ω 0.30 Ω 1.00 Ω 3.30 Ω 8.00 Ω

0.030 Ω 0.10 Ω 0.33 Ω 1.50 Ω 4.00 Ω

0.033 Ω 0.15 Ω 0.40 Ω 2.00 Ω 5.00 Ω

0.040 Ω 0.20 Ω 0.50 Ω 2.50 Ω

MP820 Standard Resistance Values:

Tolerance MP820: ±1% Standard (0.5%, 2%, 5%, 10%, and 20%

are available for most resistance values).

10.0 Ω 30.0 Ω 75.0 Ω 300 Ω 750 Ω 3.30 K

12.0 Ω 33.0 Ω 100 Ω 330 Ω 1.00 K 4.00 K

15.0 Ω 40.0 Ω 120 Ω 400 Ω 1.50 K 5.00 K

20.0 Ω 47.0 Ω 150 Ω 470 Ω 2.00 K 7.50 K

25.0 Ω 50.0 Ω 200 Ω 500 Ω 2.50 K 10.0 K

27.0 Ω 56.0 Ω 250 Ω 560 Ω 3.00 K

25 Watts at +25°C Case Temperature derated to zero at +150°C.

Copper Heat Sink Integral in the Molded Package.

Resistance Range of 0.020 ohm to 10.0 K.

Resistor element is electrically isolated from the mounting surface.

Non-inductive Design.

MP825 Standard Resistance Values :

? Resistor element is electrically isolated from the mounting surface.

Non-inductive Design.

Construction of MP825 and MP850:

The MP825 and MP850 Kool-Pak ? Power Film Resistors are constructed with Caddock's

Micronox ? resistance ?lm ?red onto a ?at ceramic substrate. The ceramic substrate is

assembly is molded with the copper heat sink ?ush with the back surface of the part. The

terminal attachment and resistance element geometry are con?gured to provide

outstanding non-inductive performance. 0.20 Ω 3.00 Ω 27.0 Ω 200 Ω 2.00 K

Ordering Information: MP850 Standard Resistance Values :

Resistor Value:

Packaging: MP800 Series Resistors are packaged in plastic shipping tubes,

50 pieces per tube when the order quantity permits.

For custom resistance values and tolerances contact applications engineering

Certain products shown in this catalog are covered by one or more patents, there are also patents pending.

CAD DOC K

MP850 TO-220 Style Power Package

? 50 Watts at +25°C Case Temperature derated to zero at +150°C.

? Copper Heat Sink Integral in the Molded Package.

? Resistance Range of 0.20 ohm to 10.0 K.

Tolerance MP825: ±1% standard (except as noted), (0.5%, 2%,

5%,10%, and 20% are available for most resistance values).

0.020 Ω 5% 0.30 Ω 4.00 Ω 33.0 Ω 300 Ω 3.00 K

0.025 Ω 5% 0.33 Ω 5.00 Ω 40.0 Ω 330 Ω 3.30 K

0.030 Ω 5% 0.40 Ω 7.50 Ω 47.0 Ω 400 Ω 4.00 K

0.033 Ω 5% 0.50 Ω 8.00 Ω 50.0 Ω 470 Ω 5.00 K

0.040 Ω 5% 0.75 Ω 10.0 Ω 56.0 Ω 500 Ω 7.50 K

bonded to a copper heat sink which becomes the metal mounting surface. This 0.050 Ω 1.00 Ω 12.0 Ω 75.0 Ω 560 Ω 10.0 K

0.075 Ω 1.50 Ω 15.0 Ω 100 Ω 750 Ω

0.10 Ω 2.00 Ω 20.0 Ω 120 Ω 1.00 K

0.15 Ω 2.50 Ω 25.0 Ω 150 Ω 1.50 K

0.25 Ω 3.30 Ω 30.0 Ω 250 Ω 2.50 K

MP850 - 50.0 - 1% Tolerance MP850: ±1% standard, (0.5%, 2%, 5%,10%, and 20%

Model Number: Tolerance are available for most resistance values).

0.20 Ω 2.00 Ω 12.0 Ω 50.0 Ω 330 Ω 2.50 K

0.25 Ω 2.50 Ω 15.0 Ω 56.0 Ω 400 Ω 3.00 K

0.30 Ω 3.00 Ω 20.0 Ω 75.0 Ω 470 Ω 3.30 K

0.33 Ω 3.30 Ω 25.0 Ω 100 Ω 500 Ω 4.00 K

0.40 Ω 4.00 Ω 27.0 Ω 120 Ω 560 Ω 5.00 K

0.50 Ω 5.00 Ω 30.0 Ω 150 Ω 750 Ω 7.50 K

0.75 Ω 7.50 Ω 33.0 Ω 200 Ω 1.00 K 10.0 K

1.00 Ω 8.00 Ω 40.0 Ω 250 Ω 1.50 K

1.50 Ω 10.0 Ω 47.0 Ω 300 Ω 2.00 K

Applications Engineering Sales and Corporate Of?ce

17271 North Umpqua Hwy. 1717 Chicago Avenue

Roseburg, Oregon 97470-9422 Riverside, California 92507-2364

Phone: (541) 496-0700 e-mail: caddock@caddock.com ? web: www.caddock.com Phone: (951) 788-1700

Fax: (541) 496-0408 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (951) 369-1151

? 2004 Caddock Electronics, Inc.

28_IL103.1004

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