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R1511S090B-E2-FE Datasheet(PDF) 6 Page - RICOH electronics devices division |
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R1511S090B-E2-FE Datasheet(HTML) 6 Page - RICOH electronics devices division |
6 / 20 page R1511x 6 Power Dissipation (TO-252-5-P2) This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the measurement at the condition below: Measurement conditions Standard Land Pattern High Wattage Land Pattern Environment Mounting on board (Wind velocity 0m/s) Mounting on board (Wind velocity 0m/s) Board Material Glass cloth epoxy plastic (Double-layers) Glass cloth epoxy plastic (Four-layers) Board Dimensions 50mm * 50mm * 1.6mm 76.2mm * 114.3mm * 0.8mm Copper Ratio Top side: Approx. 50%, Back side: Approx. 50% Top, Back side: Approx. 96%, 2nd, 3rd: 100% Through - hole φ 0.5mm * 24pcs φ 0.4mm * 30pcs Measurement Results (Ta=25 °C) Standard Land Pattern High Wattage Land Pattern Power Dissipation 1900mW 3800mW θja=(125-25°C)/1.9W= 53°C/W θja= (125-25°C)/3.8W = 26°C/W Thermal Resistance θjc= 17°C/W θjc= 7°C/W 0 1000 2000 3000 4000 5000 0 25 50 75 100 125 150 Ta (°C) 1900 3800 105 On Board (High W attage Land Pattern) On Board (Standard Land Pattern) Power Dissipation 50 Standard IC Mount Area Unit: mm High Wattage IC Mount Area Unit: mm 76.2 50 |
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