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| MP808 / MP825 (TO-126 style) and MP816 / MP850 (TO-220 style) Kool-Pak(R) Power Film Resistors Page 1 of 2 TO-126 and TO-220 Style Power Packages - Non-Inductive Designs Use your thermal design experience with power semiconductors in the TO-220 and TO-126 style power package. This experience will 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. MP825 and MP850 Power Packages Include an Integral Metal Mounting Surface for Highly Efficient Thermal Transfer MP 825 Kool-Pak(R) Power Resistors TO-126 Style Power Package * * * * 25 W atts MP 850 Kool-Pak(R) Power Resistors TO-220 Style Power Package * * * * 50 W atts 25 Watts at +25C Case Temperature derated to zero at +150C Copper Heat Sink Integral in the Molded Package Resistance Range of 0.020 ohm to 10.0K Resistor element is electrically isolated from the mounting surface 50 Watts at +25C Case Temperature derated to zero at +150C Copper Heat Sink Integral in the Molded Package Resistance Range of 0.20 ohm to 10.0K Resistor element is electrically isolated from the mounting surface Construction of MP825 and MP850: The MP825 and MP850 Kool-Pak(R) Power Film Resistors are constructed with Caddock's Micronox(R) resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance. The ceramic substrate is bonded to a copper heat sink which becomes the metal mounting surface. This assembly is molded in a high thermal conductivity molding compound with the copper heat sink flush with the back surface of the part. MP808 and MP816 with an All Molded Package Configuration 8W atts MP 808 Kool-Pak(R) Power Resistors TO -126 Style Power Package * * * * * 8 Watts at +25C Case Temperature derated to zero at +150C Thermally Conductive Molded Package Lower Cost Resistance Range of 0.020 ohm to 10.0K Resistor element is electrically isolated from the mounting surface 16 W atts MP 816 Kool-Pak(R) Power Resistors TO-220 Style Power Package * * * * * 16 Watts at +25C Case Temperature derated to zero at +150C Thermally Conductive Molded Package Lower Cost Resistance Range of 0.10 ohm to 10.0K Resistor element is electrically isolated from the mounting surface Construction of MP808 and MP816: The MP808 and MP816 Kool-Pak(R) Power Film Resistors are constructed with Caddock's Micronox(R) resistance film fired onto a flat ceramic substrate. The terminal attachment and resistance element geometry are configured to provide outstanding non-inductive performance. The resistor body is completely surrounded by a high thermal conductivity molding compound to finish this cost effective power resistor package. RHOPOINT COMPONENTS LTD. Holland Road Hurst Green Oxted, Surrey, RH8 9AX (c) 1999 Caddock Electronics, Inc. CADDOCK Tel: +44 (0)1883 717988 Fax: +44 (0)1883 712938 Email: components@rhopoint.co.uk Website: www.rhopoint.co.uk/components/ IL-103.039 MP808 / MP825 (TO-126 style) and MP816 / MP850 (TO-220 style) Kool-Pak(R) Power Film Resistors Model No. MP 808 MP 816 Page 2 of 2 Power Rating Package TO-126 Style TO-220 Style Dimensions Figure 1 Figure 2 Dielect. Strength VRMS AC 1,500 1,500 Max. Voltage 300 300 Resistance Min. Max. 0.020 0.10 10.0 K 10.0 K Terminal Solderable Solderable Solderable Solderable Comments All Molded Package All Molded Package MP 825 MP 850 * 16 Watts* 25 Watts* 50 Watts* 8 Watts TO-126 Style TO-220 Style Figure 1 Figure 2 1,500 1,500 300 300 0.020 0.20 10.0 K 10.0 K Integral Metal Mounting Surface in Molded Package Integral Metal Mounting Surface in Molded Package TYPICAL TEMPERATURE COEFFICIENT CURVE (5 and above) Specifications: Temperature Coefficient: TC referenced to +25C, R taken at +150C 5.00 ohms and above, -20 to +50 ppm/C 0.50 ohm to 4.99 ohms, -20 to +80 ppm/C 0.050 ohm to 0.49 ohm, 0 to +200 ppm/C 0.020 ohm to 0.049 ohm, 0 to +300 ppm/C ResistanceTolerance: 1% for 0.050 up to10.0k, 5% for 0.020 up to 0.049 (0.5%, 2%,5%,10% and 20% are available for most resistance values). Insulation Resistance: 10,000 Megohms, min. The resistor element is electrically isolated from the mounting surface. Terminal Strength: Mil-Std-202, Method 211, Cond. A (Pull Test) 5 lbs. MP808, MP816, MP825: R (0.2 percent + 0.001 ohm) max. MP850: R (0.2 percent + 0.01 ohm) max. Thermal Shock: Mil-Std-202, Method 107, Cond. F. MP808, MP816, MP825: R (0.3 percent + 0.001 ohm) max. MP850: R (0.3 percent + 0.01 ohm) max. Momentary Overload: MP816 and MP850: 2 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds. MP816: R (0.3 percent + 0.001 ohm) max. MP850: R (0.3 percent + 0.01 ohm) max. MP808 and MP825: 1.5 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds. MP808, MP825: R (0.3 percent + 0.001 ohm) max. Moisture Resistance: Mil-Std-202, Method 106. MP808, MP816, MP825: R (0.5 percent + 0.001 ohm) max. MP850: R (0.5 percent + 0.01 ohm) max. Load Life: 2,000 hours at rated power. Power rating dependent upon case temperature. See derating curve. MP808, MP816, MP825: R (1.0 percent + 0.001 ohm) max. MP850: R (1.0 percent + 0.01 ohm) max. Shock: 100G, Mil-Std-202, Method 213, Cond. I. MP808, MP816, MP825: R (0.2 percent + 0.001 ohm) max. MP850: R (0.2 percent + 0.01 ohm) max. Vibration, High Frequency: Mil-Std-202, Method 204, Cond. D. MP808, MP816, MP825: R (0.2 percent + 0.001 ohm) max. MP850: R (0.2 percent + 0.01 ohm) max. Measurement Note: For these specifications, resistance measurement shall be made at a point 0.2 inch (5.08 mm) from the resistor body. 1 % R 0 1 55 25 100 o 150 CASE TEMPERATURE, C be establishing the * The case temperature is toSee used for purposes of case temperature maximum applied power. Derating Curve. The DERATING CURVE 100 80 RATED LOAD, % measurement is made with the thermocouple contacting the bottom insulated mounting surface of the package (center of bottom surface), the device mounted on a heat sink, thermal grease applied at a mounting torque of up to 8 in-lbs (0.90 N-m) maximum. Without a heat sink, when in free air at +25C, the MP808 and the MP825 are rated for 1.25 watts, the MP816 and the MP850 are rated for 2.25 watts. Derating ( thermal resistance ) for each MP808: 0.064 W/C MP816: 0.128 W/C MP825: 0.200 W/C MP850: 0.400 W/C model is as follows: ( 15.63C/W ) ( 7.81C/W ) ( 5.00C/W ) ( 2.50C/W ) 60 40 20 0 25 100 o 150 CASE TEMPERATURE, C Mounting Note: The MP Kool-Pak(R) Resistors must be mounted using a screw and compression washer mounting technique. This will provide sufficient pressure on the package over time and through large temperature variations to maintain the maximum power dissipation capability. Mounting torque to avoid package damage is 8 in-lbs (0.90 N-m). .094 .004 (2.39 .10) DIA. Figure 1 TO-126 Style MP808, MP825 .320 .010 (8.12 .26) C L + .110 .010 (2.79 .26) .080 .020 (2.03 .51) MP808 0.10 1% .115 .010 (2.92 .26) .053 .007 (1.35 .18) .030 .004 (.76 .10) .200 .010 (5.08 .26) .440 .010 (11.18 .26) .450 .050 (11.43 1.27) .023 .004 (.58 .10) .058 .007 (1.47 .18) Figure 2 TO-220 Style MP816, MP850 .125 .004 (3.18 .10) DIA. .410 .010 (10.41 .26) C L .125 .010 (3.18 .26) .125 .010 (3.18 .26) .130 .030 (3.30 .76) MP850 10.0 1% .053 .007 (1.35 .18) .030 .004 (.76 .10) .200 .010 (5.08 .26) .640 .010 (16.26 .26) .500 .050 (12.70 1.27) .025 .004 (.64 .10) .070 .010 (1.78 .26) DIMENSIONS IN INCHES AND (MILLIMETERS) Ordering Information: Model Number: Resistor Value: MP816 - 50.0 - 1% Tolerance RHOPOINT COMPONENTS LTD. Holland Road Hurst Green Oxted, Surrey, RH8 9AX (c) 1999 Caddock Electronics, Inc. CADDOCK Tel: +44 (0)1883 717988 Tel: +44 (0)1883 717988 Email: components@rhopoint.co.uk Website: www.rhopoint.co.uk/components/ IL-103.019 |
Price & Availability of MP850
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