Bill of Materials for the NCP1521B Evaluation Board 6/1/2007 Designator Quantity Description Value Tolerance Footprint Manufacturer Manufacturer Part Number Substitution Allowed Lead Free U1 C1 C2 C3 R1, R2 R3 R4 L1 VIN, VOUT ENABLE SELECT 1 1 1 1 2 1 1 1 4 1 1 IC, Converter, DC/DC Ceramic capacitor Ceramic capacitor Ceramic capacitor SMD resistor SMD resistor SMD resistor Inductor Connector 3 Pin Jumper Header 3x2 Pin Jumper Header 4.7uF, 6,3V, X5R 10uF, 6,3V, X5R 18pF, 50V, COG 510kΩ 330kΩ 240kΩ 2.2µH - 10% 10% 5% 1% 1% 1% 20% - TSOP5 0603 0603 0603 0603 0603 0603 1605 2,54mm 2,54mm ON Semiconductor TDK TDK TDK Vishay Vishay Vishay Coilcraft Kontek Comatel TYCO/AMP TYCO/AMP NCP1521B C1608X5R0J475 C1608X5R0J106 C1608C0G1H180 CRCW0603510KFKEA CRCW0603330KFKEA CRCW0603240KFKEA DO1605T-222MLB 3110014000500 5-826629-0 4731955180470 No Yes No Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes GND1, GND2 2 Jumper for GND - - 10,16mm Harwin D3082-01 Yes Yes TPEN, TPLX, TPVIN, TPVOUT 4 Test point type 3 - - 1,60mm Keystone 5010 Yes Yes