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MHP20S TO-126 Series Power Resistor
MHP20S Series * * * * * TO-126 housing Low inductance (<50nH) Power dissipation up to 20W High stability film resistance elements RoHS compliant
IRC's TO-126 power film resistors satisfy demanding applications for accurate and stable power resistors housed in the convenient TO-126 case. The resistance element is isolated from the mounting tab by an alumina ceramic layer, providing high thermal conductivity and excellent insulation resistance between terminals and tab. The low inductance design makes these products especially useful in high frequency and high speed pulse applications.
Specification Data
TypePower MHP20SLF MHP20SLF
1 2 3
Power Rating1 Heatsink2 20W 20W Free Air3 1W 1W
Voltage Rating4 500
Thermal Resistance 5.9C/W
Resistance Range (W) 0.01 - 0.09 0.1 - 51K
Tolerances 5% 1%, 5%
Preferred Values E6 E24
Temperature Coefficient 250ppm/C 100ppm/C
Maximum current 25 amps Power rating based on 25C case temperature Power rating based on 25C ambient temperature 4 Maximun voltage or PxR
Physical Data
Dimensions (mm) A B C D E F G H J K L M
General Note
8.5 12.0 3.1 3.1 17.0 3.2 3.8 1.75 0.5 0.6 1.4 5.08
0.2 0.2 0.2 0.1 1.0 0.5 0.2 0.1 0.05 0.05 0.05 0.1
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.
Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
A subsidiary of TT electronics plc MHP20S Series Issue July 2008
MHP20S Series TO-126 Power Resistor
Frequency Response Data
1000
Pulse Power Data
100 50 10 5
Power Derating Data
Temperature Rise Data
Environmental Data
Item Operating Temperature Range Dielectric Withstanding Voltage Load Life
100 50 1000
Test Conditions
Specification - Performance -55C to 155C
60 seconds, between leads connected together and metal back plate 25C, 90 min. ON, 30 min. OFF, 1000 hours 40C, 90-95% RH, DC 0.1W, 1000 hours 230 5C, 3 sec. Between leads and metal back plate IEC60068-2-6
2000VDC R 1.0% + 0.05W R 1.0% + 0.05W >75% coverage > 1000MW R 0.25%
10 Moisture Resistance
Solderability*
5
Insulation Resistance Vibration
* During soldering, the soldering temperature profile must not cause the metal back plate of this device to exceed 220C
Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
MHP20S Series Issue July 2008
MHP20S Series TO-126 Power Resistor
Ordering Data
Prefix Style Resistance Code
4-digit resistance code. Ex: 10R0 = 10W, 1K00 = 1KW
TFP - MHP20SLF - 1R50 - J
Tolerance Code
J = 5%; F = 1%
Packaging
Standard packaging is RoHS PS/PE tube packaging (60 pieces per tube).
Application Notes:
1. Insulating material is unnecesaary between the heat sink and the tab as the resistor film is insulated by the internal alumina substrate. 2. When mounting with a fastner, thermal grease is recommended. 3. Thermal design should satisfy the following equation: Case Temperature (Tc) + [Thermal Resistance (R0JC) x Power applied (Watts)] 155C over the full operating temperature range of the application. 4. Leads are lead free. Internal connections contain Pb that are exempted under RoHS directive 2002/95/EC, exemption 7.
Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
MHP20S Series Issue July 2008

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