20W Class A Amp - EasyEDA open source hardware lab

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STD 20W Class A Amp

Mode: Editors' pick

Update time： 2023-07-14 19:51:51

Creation time： 2021-03-25 13:19:13

Description

class A amp.

Design Drawing

schematic diagram

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PCB

（ 1 / ）

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BOM

ID	Name	Designator	Footprint	Quantity
1	47uF	C1,C3,C4,C12	CAP-D5.0-F2.0	4
2	820pF	C2	1206	1
3	100nF	C5,C6,C9,C13	1206	4
4	470uF	C7,C14	CAP-D10.0-F5.0	2
5	220uF	C8	CAP-D8.0-F3.5	1
6	1000uF	C10	CAP-D12.5-F5.0	1
7	100pF	C11	1206	1
8	150nF	C15	13612/P=10	1
9	1N4148WS	D1,D2	SOD-323F_L1.7-W1.3-LS2.5-R-RD	2
10	5X20MM_FUSE_HOLDER	F1,F2	3554 FUSE HOLDER	2
11	Heatsink	HS1,HS2	TO220 HEATSINK	2
12	6.8uH	L1	VLS6045AF	1
13	7 Pin Connector	P1	7 PIN VIAS	1
14	2SA1312	Q1,Q2	SOT-346_L2.9-W1.5-P1.90-LS2.5-TR-CW	2
15	BC856	Q3,Q4,Q5	SOT23-3	3
16	BD139	Q6,Q10	TO-225-3_L7.6-W2.8-P2.54-R	2
17	MJL21193	Q7	TO-264-3_L20.0-W5.0-P5.45-L	1
18	BD140	Q11	TO-225-3_L7.6-W2.8-P2.54-R	1
19	MJL21194	Q12	TO-264-3_L20.0-W5.0-P5.45-L	1
20	10	R1	1206	1
21	1M	R2	1206	1
22	10k	R3,R10,R11,R19	1206	4
23	100	R4,R5,R6,R8,R16,R17,R28,R29	1206	8
24	1k	R7	1206	1
25	2.2k	R9,R12,R26	1206	3
26	68	R13,R24,R25	1206	3
27	680	R14	1206	1
28	16	R15	1206	1
29	510	R18	1206	1
30	270	R20	1206	1
31	0.1	R21,R22	SMW5R10JT	2
32	6.8	R23	R2010	1
33	10	R27	R2010	1
34	EMI SHIELD	U1	MS593-20	1
35	1k	VR1	PV36W	1
36	BC846S	Q8,Q9	SOT363	2

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Project Members

Shaun G.