This welding practice board aims to improve welding level and speed. Welding skill levelInternational standard board, high-strength fire-resistant and anti fall material, can be disassembled and reassembled repeatedly.Suitable for students majoring in electronics and electronics enthusiasts Board size: 80x60MMBoard thickness: 1.6mmCommunication interface: SPIPower supply voltage: 5VPower supply current: 800mAThere are 9 major categories of surface mount components for matching welding, totaling 110 pieces, and corresponding testing points are set up:1.Resistance class - packaged as 0805 (20 pieces, all in series, total resistance R1)2.Resistance class - packaged as 0603 (34 pieces, all in series, total resistance of R2)3.Resistance class - packaged as 0402 (10 pieces, all in series, total resistance R3)4.Exclusion type - packaged as 0603 (6 pieces, all connected in series, with test points)5.Capacitor class - packaged as 0805 (20 pieces, all in series, total capacity of C1)6.Diode class - packaged as 3216 (10 pieces, all connected in series, with testing point Da)7. istor class - packaged as SOT-23 (6 pieces, with test points)8.Integrated chip class - packaged as SO-14 (2 pieces, with testing points)9.Integrated chip class - packaged as LQFP44 (2 pieces, with testing points)note: Please contact customer service about download or installation information before placing order. Colour:As ShownMaterial:Electronic components Package Contents:10 x Welding Practice Circuit Board Kit Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.