MP800 Series Kool-Pak® Power Film Resistors
TO-220 Style and TO-126 Style - Non-Inductive Designs
Page 1 of 2
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.
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.
MetalHeatSinkMountingTab.
MP820ResistanceRangeof10.0ohmto10.0K.
MP821ResistanceRangeof 0.020ohmto9.99ohm.
Resistorelementiselectricallyisolatedfromthemountingsurface.
Non-Inductivedesignforhighspeedswitching,snubbers,
andrfapplications.
MP821 Standard Resistance Values:
Tolerance MP821: ±1% Standard (0.5%, 5%, and 20% are
available for most resistance values).
Construction of MP820 and MP821:
0.020 Ω
0.025 Ω
0.030 Ω
0.033 Ω
0.040 Ω
0.050 Ω
0.075 Ω
0.10 Ω
0.15 Ω
0.20 Ω
0.25 Ω
0.30 Ω
0.33 Ω
0.40 Ω
0.50 Ω
0.75 Ω
1.00 Ω
1.50 Ω
2.00 Ω
2.50 Ω
3.00 Ω
3.30 Ω
4.00 Ω
5.00 Ω
7.50 Ω
8.00 Ω
The MP820 and MP821 Kool-Tab® Power Film Resistors are constructed with Caddock's
Micronox® resistance film fired onto a flat 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 finish the metal tab TO-220 package. The lead wire attachment
and resistance element geometry are configured to provide outstanding non-inductive
performance.
MP820 Standard Resistance Values:
Tolerance MP820: ±1% Standard (0.5%, 5%, and 20% are
available for most resistance values).
10.0 Ω
12.0 Ω
15.0 Ω
20.0 Ω
25.0 Ω
27.0 Ω
30.0 Ω
33.0 Ω
40.0 Ω
47.0 Ω
50.0 Ω
56.0 Ω
75.0 Ω
100 Ω
120 Ω
150 Ω
200 Ω
250 Ω
300 Ω
330 Ω
400 Ω
470 Ω
500 Ω
560 Ω
750 Ω
1.00 K
1.50 K
2.00 K
2.50 K
3.00 K
3.30 K
4.00 K
5.00 K
7.50 K
10.0 K
MP825 and MP850 Power Film Resistors
Include an Integral Metal Mounting Surface
for Highly Efficient Thermal Transfer
MP825 TO-126StylePowerPackage
•
•
•
•
•
25 Wattsat+25°C CaseTemperaturederatedtozeroat+150°C.
CopperHeatSinkIntegralintheMoldedPackage.
ResistanceRangeof0.020ohmto10.0K.
Resistorelementiselectricallyisolatedfromthemountingsurface.
Non-inductiveDesign.
MP850 TO-220StylePowerPackage
•
•
•
•
•
50 Wattsat+25°C CaseTemperaturederatedtozeroat+150°C.
CopperHeatSinkIntegralintheMoldedPackage.
ResistanceRangeof0.20ohmto10.0K.
Resistorelementiselectricallyisolatedfromthemountingsurface.
Non-inductiveDesign.
MP825 Standard Resistance Values:
Tolerance MP825: ±1% standard (except as noted), (0.5%,
5%, and 20% are available for most resistance values).
0.020 Ω 5% 0.30 Ω
0.025 Ω 5% 0.33 Ω
0.030 Ω 5% 0.40 Ω
0.033 Ω 5% 0.50 Ω
0.040 Ω 5% 0.75 Ω
4.00 Ω
5.00 Ω
7.50 Ω
8.00 Ω
10.0 Ω
12.0 Ω
15.0 Ω
20.0 Ω
25.0 Ω
27.0 Ω
30.0 Ω
33.0 Ω
40.0 Ω
47.0 Ω
50.0 Ω
56.0 Ω
75.0 Ω
100 Ω
120 Ω
150 Ω
200 Ω
250 Ω
300 Ω
330 Ω
400 Ω
470 Ω
500 Ω
560 Ω
750 Ω
1.00 K
1.50 K
2.00 K
2.50 K
3.00 K
3.30 K
4.00 K
5.00 K
7.50 K
10.0 K
Construction of MP825 and MP850:
The MP825 and MP850 Kool-Pak® Power Film Resistors are constructed with Caddock's
Micronox® resistance film fired onto a flat ceramic substrate. The ceramic substrate is
bonded to a copper heat sink which becomes the metal mounting surface. This
assembly is molded with the copper heat sink flush with the back surface of the part. The
terminal attachment and resistance element geometry are configured to provide
outstanding non-inductive performance.
0.050 Ω
0.075 Ω
0.10 Ω
0.15 Ω
0.20 Ω
0.25 Ω
1.00 Ω
1.50 Ω
2.00 Ω
2.50 Ω
3.00 Ω
3.30 Ω
MP850 Standard Resistance Values:
Tolerance MP850: ±1% standard, (0.5%, 5%, and 20% are
available for most resistance values).
MP850 - 50.0 - 1%
Ordering Information:
Model Number:
Resistor Value:
Tolerance
2.50 K
3.00 K
3.30 K
4.00 K
5.00 K
7.50 K
10.0 K
0.20 Ω
0.25 Ω
0.30 Ω
0.33 Ω
0.40 Ω
0.50 Ω
0.75 Ω
1.00 Ω
1.50 Ω
2.00 Ω
2.50 Ω
3.00 Ω
3.30 Ω
4.00 Ω
5.00 Ω
7.50 Ω
8.00 Ω
10.0 Ω
12.0 Ω
15.0 Ω
20.0 Ω
25.0 Ω
27.0 Ω
30.0 Ω
33.0 Ω
40.0 Ω
47.0 Ω
50.0 Ω
56.0 Ω
75.0 Ω
100 Ω
120 Ω
150 Ω
200 Ω
250 Ω
300 Ω
330 Ω
400 Ω
470 Ω
500 Ω
560 Ω
750 Ω
1.00 K
1.50 K
2.00 K
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.
Sales and Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
ELECTRONICS, INC.
For Caddock Distributors listed by country see caddock.com/contact/dist.html
e-mail: caddock@caddock.com • web: www.caddock.com
Fax: (541) 496-0408
© 2003-2020 Caddock Electronics, Inc.
28_IL103.0420
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