MHP TO-220 Series Power Resistor MHP Series • • • • • • TO-220 housing Low inductance (<50nH) Available in 20W, 35W, or 50W High stability film resistance elements RoHS compliant Approved to DSCC drawings 07017 and 07018 IRC’s MHP series resistors satisfy demanding applications for accurate and stable power resistors housed in the convenient TO-220 case. The resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal resistance and ensuring high insulation resistance between terminals and tab. The non-inductive design makes these products especially useful in high frequency and high speed pulse applications. Electrical Data Power Rating1 Type Heatsink2 MHP-20 20W MHP-35 35W MHP-50 50W Free Air3 2.25W 2.25W 2.25W Voltage Rating4 500V 500V 500V Resistance Range Thermal Resistance 5.9°C/W 3.3°C/W 2.3°C/W Tolerances Nominal Resistance Typ. Temperature Coefficient5 Min Max 0.01Ω 0.09Ω ±5% E6 ±250 ppm/°C 0.1Ω 9.1Ω ±1%, ±5% E24 ±150 ppm/°C 10Ω 51KΩ ±1%, ±5% E24 ±50 ppm/°C 0.01Ω 0.09Ω ±5% E6 ±250 ppm/°C 0.1Ω 9.1Ω ±1%, ±5% E24 ±150 ppm/°C 10Ω 51KΩ ±1%,±5% E24 ±50 ppm/°C 0.01Ω 0.09Ω ±5% E6 ±250 ppm/°C 0.1Ω 9.1Ω ±1%, ±5% E24 ±150 ppm/°C 10Ω 51KΩ ±1%,±5% E24 ±50 ppm/°C Maximum current 25 amps 2 Power rating based on 25°C tab temperature 3 Power rating based on 25°C ambient temperature 4 Maximum voltage 500V or √P x R 5 See TCR Chart for resistance values below 1ohm 1 Frequency Characteristics Pulse Energy Durability Pulse Peak (Watts) MHP35 MHP50 10K Impedance (ohms) MHP20 10K Damage Level 1K 100 1K 100 MHP20LF 10K MHP20LF 1K00 MHP20LF 100R MHP20LF 50R0 Safety Zone MHP20LF 22R0 10 1µ 10µ 100µ 1m 10m 100m Pulse Width (seconds) 10 10K 100K 1M 10M 100M 1G Frequency(Hz) 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. 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 MHP TO220 Series Issue May 2009 MHP TO-220 Series Power Resistor Physical Data Note: Metal tab is electrically isolated. A G Dim in (nom) mm A 0.398 10.1 ±.2 B 0.590 15.0 ±0.2 C 0.177 4.5 ±0.2 ØD 0.142 3.6 ±0.1 E 0.610 15.5 ±1.0 F 0.157 4.0 ±0.5 G 0.118 3 ±0.2 H 0.108 2.75 ±0.2 J 0.020 0.5 ±0.05 K 0.029 0.75 ±0.05 L 0.059 1.5 ±0.05 M 0.200 5.08 ±0.1 ØD C L C L N B C P MHP35 10K0 F LF0815 L F E K C L M J C L H C L Lead Material Tin Plated Copper N 0.059 1.5 ±0.05 Tab Material Nickel Plated Copper P 0.630 16.0 ±0.1 Environmental Data Test Method Specification - Performance MIL-STD-202 Method 107 Condition F ±0.30% + 50mΩ MIL-STD-202 Method 106 ±1.0% + 50mΩ Vibration MIL-STD-202 Method 204 Condition D ±0.25% + 50mΩ Load Life MIL-STD-202 Method 108 1,000 Hours ±1.0% + 50mΩ Resistance to Solder Heat MIL-STD-202 Method 210 Condition B ±0.25% + 50mΩ Dielectric Withstanding Voltage MIL-STD-202 Method 301 2200 volts DC or 1500 volts AC; 60 seconds Insulation Resistance (between terminal and tab) MIL-STD-202 Method 302 >1000MW Solderability MIL-STD-202 Method 208 >95% coverage Thermal Shock Moisture Resistance Operating Temperature Range -55°C to +155°C * During soldering, the soldering temperature profile must not cause the metal tab of this device to exceed 220°C. Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com MHP TO-220 Series Issue May 2009 MHP TO-220 Series Power Resistor Power Derating Data Temperature Rise Data 140 50 MHP20 MHP50 MHP35 100 80 60 40 20 0 0 10 25° TCR (ppm/°C) 0 to 100°C Resistor Film Temp Rise with Respect to Flange Temp 120 ∆Tfilm (°C) % of Rated Power 100 Flange Temperature (°C) 155° 5 10 15 20 25 30 Power (Watts) 35 40 45 Typical TCR For Low Values Application Notes: 250 1. Insulating material is unnecessary between the heat sink and the tab, as the resistor film is isolated by the internal alumina substrate. 200 2. When mounting with a fastener, thermal grease is recommended. 150 3. Thermal design should satisfy the following equation: Case Temperature (Tc) + [Thermal Resistance (ROJC) x Power applied (Watts)] ≤ 155°C over the full operating temperature of the application. 100 50 0 0.01 0.1 Resistance (Ohms) 1.0 Ordering Data Prefix 50 4. Resistor film temperature is not to exceed 155°C during operation. 5. This product is RoHS compliant by exemption according to RoHS directive 2002/95/EC exemptions 5 & 7, as they apply to lead in glass and internal solder connections. TFP - MHP20LF - 1R50 - J Style MHP20LF = 20W, TO-220 style power resistor MHP35LF = 35W, TO-220 style power resistor 07017 = DSCC drawing (07017) ver. of above MHP50LF = 50W, TO-220 style power resistor 07018 = DSCC drawing (07018) ver. of above Resistance Code 4-digit resistance code. Ex: 10R0 = 10Ω, 1K00 = 1KΩ Absolute Tolerance Code J = ±5%; F = ±1% Standard Packaging RoHS compliant tube (50 pcs per tube) For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com MHP TO-220 Series Issue May 2009