Reference layout

281D Quad Function Generator

DunningtonAudio-281D-281D-layout

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DunningtonAudio-281D-281D-layout

The project archive carries the board, its project file and the upstream licence. The archive is zstd-compressed (tar.zst).

380Placed parts

268Nets

4Copper layers

104 × 158 mmBoard size

yesRouted

KiCad 5File format

Bill of materials

380 distinct parts

330 resolve to something in the catalog — click through to the footprint.

Ref	Value	Footprint
C1	22u	Capacitor_SMD:CP_Elec_5x5.3
C101	220n	Capacitor_SMD:C_2416_6041Metric
C102	47n	Capacitor_SMD:C_0805_2012Metric
C103	47n	Capacitor_SMD:C_0805_2012Metric
C111	100n	Capacitor_SMD:C_0805_2012Metric
C112	100n	Capacitor_SMD:C_0805_2012Metric
C113	100n	Capacitor_SMD:C_0805_2012Metric
C114	100n	Capacitor_SMD:C_0805_2012Metric
C115	100n	Capacitor_SMD:C_0805_2012Metric
C116	100n	Capacitor_SMD:C_0805_2012Metric
C117	100n	Capacitor_SMD:C_0805_2012Metric
C118	100n	Capacitor_SMD:C_0805_2012Metric
C199	47n	Capacitor_SMD:C_0805_2012Metric
C2	22u	Capacitor_SMD:CP_Elec_5x5.3
C201	220n	Capacitor_SMD:C_2416_6041Metric
C202	47n	Capacitor_SMD:C_0805_2012Metric
C203	47n	Capacitor_SMD:C_0805_2012Metric
C211	100n	Capacitor_SMD:C_0805_2012Metric
C212	100n	Capacitor_SMD:C_0805_2012Metric
C213	100n	Capacitor_SMD:C_0805_2012Metric
C299	47n	Capacitor_SMD:C_0805_2012Metric
C3	22u	Capacitor_SMD:CP_Elec_5x5.3
C301	220n	Capacitor_SMD:C_2416_6041Metric
C302	47n	Capacitor_SMD:C_0805_2012Metric
C303	47n	Capacitor_SMD:C_0805_2012Metric
C311	100n	Capacitor_SMD:C_0805_2012Metric
C312	100n	Capacitor_SMD:C_0805_2012Metric
C313	100n	Capacitor_SMD:C_0805_2012Metric
C314	100n	Capacitor_SMD:C_0805_2012Metric
C315	100n	Capacitor_SMD:C_0805_2012Metric
C316	100n	Capacitor_SMD:C_0805_2012Metric
C317	100n	Capacitor_SMD:C_0805_2012Metric
C318	100n	Capacitor_SMD:C_0805_2012Metric
C399	47n	Capacitor_SMD:C_0805_2012Metric
C4	100n	Capacitor_SMD:C_0805_2012Metric
C401	220n	Capacitor_SMD:C_2416_6041Metric
C402	47n	Capacitor_SMD:C_0805_2012Metric
C403	47n	Capacitor_SMD:C_0805_2012Metric
C411	100n	Capacitor_SMD:C_0805_2012Metric
C412	100n	Capacitor_SMD:C_0805_2012Metric

Show the other 340

C413	100n	Capacitor_SMD:C_0805_2012Metric
C499	47n	Capacitor_SMD:C_0805_2012Metric
C5	22u	Capacitor_SMD:CP_Elec_5x5.3
C6	100n	Capacitor_SMD:C_0805_2012Metric
C7	100n	Capacitor_SMD:C_0805_2012Metric
C8	100n	Capacitor_SMD:C_0805_2012Metric
C_101	220n	Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm
C_201	220n	Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm
C_301	220n	Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm
C_401	220n	Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm
D1	Red_3mm	LED_THT:LED_D3.0mm
D101	BAT54C	Package_TO_SOT_SMD:SOT-23
D102	SZMM3Z10VST1G	Diode_SMD:D_SOD-323
D103	BAT54WS	Diode_SMD:D_SOD-323
D104	BAT54WS	Diode_SMD:D_SOD-323
D105	Red_3mm	LED_THT:LED_D3.0mm
D106	Yel_3mm	LED_THT:LED_D3.0mm
D107/207	BAT54C	Package_TO_SOT_SMD:SOT-23
D108	BAT54WS	Diode_SMD:D_SOD-323
D109	BAT54WS	Diode_SMD:D_SOD-323
D199	BAT54WS	Diode_SMD:D_SOD-323
D201	BAT54C	Package_TO_SOT_SMD:SOT-23
D202	SZMM3Z10VST1G	Diode_SMD:D_SOD-323
D203	BAT54WS	Diode_SMD:D_SOD-323
D204	BAT54WS	Diode_SMD:D_SOD-323
D205	Red_3mm	LED_THT:LED_D3.0mm
D206	Yel_3mm	LED_THT:LED_D3.0mm
D208	BAT54WS	Diode_SMD:D_SOD-323
D299	BAT54WS	Diode_SMD:D_SOD-323
D301	BAT54C	Package_TO_SOT_SMD:SOT-23
D302	SZMM3Z10VST1G	Diode_SMD:D_SOD-323
D303	BAT54WS	Diode_SMD:D_SOD-323
D304	BAT54WS	Diode_SMD:D_SOD-323
D305	Red_3mm	LED_THT:LED_D3.0mm
D306	Yel_3mm	LED_THT:LED_D3.0mm
D307/407	BAT54C	Package_TO_SOT_SMD:SOT-23
D308	BAT54WS	Diode_SMD:D_SOD-323
D309	BAT54WS	Diode_SMD:D_SOD-323
D399	BAT54WS	Diode_SMD:D_SOD-323
D401	BAT54C	Package_TO_SOT_SMD:SOT-23
D402	SZMM3Z10VST1G	Diode_SMD:D_SOD-323
D403	BAT54WS	Diode_SMD:D_SOD-323
D404	BAT54WS	Diode_SMD:D_SOD-323
D405	Red_3mm	LED_THT:LED_D3.0mm
D406	Yel_3mm	LED_THT:LED_D3.0mm
D408	BAT54WS	Diode_SMD:D_SOD-323
D499	BAT54WS	Diode_SMD:D_SOD-323
FIX_1	M3	MountingHole:MountingHole_3.2mm_M3_Pad_Via
FIX_2	M3	MountingHole:MountingHole_3.2mm_M3_Pad_Via
FIX_3	M3	MountingHole:MountingHole_3.2mm_M3_Pad_Via
H101	M2.5	MountingHole:MountingHole_2.5mm
H102	M2.5	MountingHole:MountingHole_2.5mm
J1	Q	Connector_Wire:SolderWirePad_1x01_Drill1.2mm
J101	108-0906-001	Buchla_Connectors:Johnson_108-09XX-001
J102	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J103	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J104	108-0902-001	Buchla_Connectors:Johnson_108-09XX-001
J105	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
J106	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
J2	-15V	Connector_Wire:SolderWirePad_1x01_Drill1.2mm
J201	108-0906-001	Buchla_Connectors:Johnson_108-09XX-001
J202	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J203	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J204	108-0902-001	Buchla_Connectors:Johnson_108-09XX-001
J205	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
J3	+15V	Connector_Wire:SolderWirePad_1x01_Drill1.2mm
J301	108-0906-001	Buchla_Connectors:Johnson_108-09XX-001
J302	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J303	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J304	108-0902-001	Buchla_Connectors:Johnson_108-09XX-001
J305	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
J306	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
J4	+12V	Connector_Wire:SolderWirePad_1x01_Drill1.2mm
J401	108-0906-001	Buchla_Connectors:Johnson_108-09XX-001
J402	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J403	108-0903-001	Buchla_Connectors:Johnson_108-09XX-001
J404	108-0902-001	Buchla_Connectors:Johnson_108-09XX-001
J405	108-0910-001	Buchla_Connectors:Johnson_108-09XX-001
L1	10u	Inductor_SMD:L_0805_2012Metric
L2	10u	Inductor_SMD:L_0805_2012Metric
L3	10u	Inductor_SMD:L_0805_2012Metric
M1	Logo_150mil	Dunnington:Logo_150mil
M2	Mod_Indicator_1-10_150mil	Dunnington:Mod_Indicator_1-10_150mil
M3	Serial_Box_150mil	Dunnington:Serial_Box_150mil
Q1	MMBT3904	Package_TO_SOT_SMD:SOT-23
Q101	DMMT3906W	Package_TO_SOT_SMD:SOT-363_SC-70-6
Q102	MMBFJ201	Package_TO_SOT_SMD:SOT-23
Q103	MMBT3904	Package_TO_SOT_SMD:SOT-23
Q201	DMMT3906W	Package_TO_SOT_SMD:SOT-363_SC-70-6
Q202	MMBFJ201	Package_TO_SOT_SMD:SOT-23
Q203	MMBT3904	Package_TO_SOT_SMD:SOT-23
Q301	DMMT3906W	Package_TO_SOT_SMD:SOT-363_SC-70-6
Q302	MMBFJ201	Package_TO_SOT_SMD:SOT-23
Q303	MMBT3904	Package_TO_SOT_SMD:SOT-23
Q401	DMMT3906W	Package_TO_SOT_SMD:SOT-363_SC-70-6
Q402	MMBFJ201	Package_TO_SOT_SMD:SOT-23
Q403	MMBT3904	Package_TO_SOT_SMD:SOT-23
R1	6k8	Resistor_SMD:R_0805_2012Metric
R101	100k	Resistor_SMD:R_0805_2012Metric
R102	4k7	Resistor_SMD:R_0805_2012Metric
R103	15k	Resistor_SMD:R_0805_2012Metric
R104	47k	Resistor_SMD:R_0805_2012Metric
R105	49k9	Resistor_SMD:R_0805_2012Metric
R106	5k6	Resistor_SMD:R_0805_2012Metric
R107	49k9	Resistor_SMD:R_0805_2012Metric
R108	47k	Resistor_SMD:R_0805_2012Metric
R109	47k	Resistor_SMD:R_0805_2012Metric
R110	1k	Resistor_SMD:R_0805_2012Metric
R111	100k	Resistor_SMD:R_0805_2012Metric
R112	100k	Resistor_SMD:R_0805_2012Metric
R113	47k	Resistor_SMD:R_0805_2012Metric
R114	47k	Resistor_SMD:R_0805_2012Metric
R115	49k9	Resistor_SMD:R_0805_2012Metric
R116	1k	Resistor_SMD:R_0805_2012Metric
R117	49k9	Resistor_SMD:R_0805_2012Metric
R118	4M7	Resistor_SMD:R_0805_2012Metric
R119	4k7	Resistor_SMD:R_0805_2012Metric
R120	4M7	Resistor_SMD:R_0805_2012Metric
R121	47k	Resistor_SMD:R_0805_2012Metric
R122	150k	Resistor_SMD:R_0805_2012Metric
R123	680R	Resistor_SMD:R_0805_2012Metric
R124	680R	Resistor_SMD:R_0805_2012Metric
R125	47k	Resistor_SMD:R_0805_2012Metric
R126	10k	Resistor_SMD:R_0805_2012Metric
R127	680R	Resistor_SMD:R_0805_2012Metric
R128	22k	Resistor_SMD:R_0805_2012Metric
R129	4k7	Resistor_SMD:R_0805_2012Metric
R130	4k7	Resistor_SMD:R_0805_2012Metric
R131	4k7	Resistor_SMD:R_0805_2012Metric
R132	4k7	Resistor_SMD:R_0805_2012Metric
R133	22k	Resistor_SMD:R_0805_2012Metric
R134	6k8	Resistor_SMD:R_0805_2012Metric
R135	49k9	Resistor_SMD:R_0805_2012Metric
R136	10k	Resistor_SMD:R_0805_2012Metric
R137	470k	Resistor_SMD:R_0805_2012Metric
R138	100k	Resistor_SMD:R_0805_2012Metric
R139	1M	Resistor_SMD:R_0805_2012Metric
R140	22k	Resistor_SMD:R_0805_2012Metric
R141	100k	Resistor_SMD:R_0805_2012Metric
R142	11k	Resistor_SMD:R_0805_2012Metric
R143	10k	Resistor_SMD:R_0805_2012Metric
R144	1k	Resistor_SMD:R_0805_2012Metric
R145	11k	Resistor_SMD:R_0805_2012Metric
R146	10k	Resistor_SMD:R_0805_2012Metric
R147	1k	Resistor_SMD:R_0805_2012Metric
R148	5k6	Resistor_SMD:R_0805_2012Metric
R149	47k	Resistor_SMD:R_0805_2012Metric
R150	100k	Resistor_SMD:R_0805_2012Metric
R151	11k	Resistor_SMD:R_0805_2012Metric
R152	10k	Resistor_SMD:R_0805_2012Metric
R153	1k	Resistor_SMD:R_0805_2012Metric
R199	4M7	Resistor_SMD:R_0805_2012Metric
R2	22k	Resistor_SMD:R_0805_2012Metric
R201	100k	Resistor_SMD:R_0805_2012Metric
R202	4k7	Resistor_SMD:R_0805_2012Metric
R203	15k	Resistor_SMD:R_0805_2012Metric
R204	47k	Resistor_SMD:R_0805_2012Metric
R205	49k9	Resistor_SMD:R_0805_2012Metric
R206	5k6	Resistor_SMD:R_0805_2012Metric
R207	49k9	Resistor_SMD:R_0805_2012Metric
R208	47k	Resistor_SMD:R_0805_2012Metric
R209	47k	Resistor_SMD:R_0805_2012Metric
R210	1k	Resistor_SMD:R_0805_2012Metric
R211	100k	Resistor_SMD:R_0805_2012Metric
R212	100k	Resistor_SMD:R_0805_2012Metric
R213	47k	Resistor_SMD:R_0805_2012Metric
R214	47k	Resistor_SMD:R_0805_2012Metric
R215	49k9	Resistor_SMD:R_0805_2012Metric
R216	1k	Resistor_SMD:R_0805_2012Metric
R217	49k9	Resistor_SMD:R_0805_2012Metric
R218	4M7	Resistor_SMD:R_0805_2012Metric
R219	4k7	Resistor_SMD:R_0805_2012Metric
R220	4M7	Resistor_SMD:R_0805_2012Metric
R221	47k	Resistor_SMD:R_0805_2012Metric
R222	150k	Resistor_SMD:R_0805_2012Metric
R223	680R	Resistor_SMD:R_0805_2012Metric
R224	680R	Resistor_SMD:R_0805_2012Metric
R225	47k	Resistor_SMD:R_0805_2012Metric
R226	10k	Resistor_SMD:R_0805_2012Metric
R227	680R	Resistor_SMD:R_0805_2012Metric
R228	22k	Resistor_SMD:R_0805_2012Metric
R229	4k7	Resistor_SMD:R_0805_2012Metric
R230	4k7	Resistor_SMD:R_0805_2012Metric
R231	4k7	Resistor_SMD:R_0805_2012Metric
R232	4k7	Resistor_SMD:R_0805_2012Metric
R233	22k	Resistor_SMD:R_0805_2012Metric
R234	6k8	Resistor_SMD:R_0805_2012Metric
R235	49k9	Resistor_SMD:R_0805_2012Metric
R236	10k	Resistor_SMD:R_0805_2012Metric
R237	470k	Resistor_SMD:R_0805_2012Metric
R238	100k	Resistor_SMD:R_0805_2012Metric
R239	1M	Resistor_SMD:R_0805_2012Metric
R240	22k	Resistor_SMD:R_0805_2012Metric
R241	100k	Resistor_SMD:R_0805_2012Metric
R242	11k	Resistor_SMD:R_0805_2012Metric
R243	10k	Resistor_SMD:R_0805_2012Metric
R244	1k	Resistor_SMD:R_0805_2012Metric
R245	11k	Resistor_SMD:R_0805_2012Metric
R246	10k	Resistor_SMD:R_0805_2012Metric
R247	1k	Resistor_SMD:R_0805_2012Metric
R299	4M7	Resistor_SMD:R_0805_2012Metric
R301	100k	Resistor_SMD:R_0805_2012Metric
R302	4k7	Resistor_SMD:R_0805_2012Metric
R303	15k	Resistor_SMD:R_0805_2012Metric
R304	47k	Resistor_SMD:R_0805_2012Metric
R305	49k9	Resistor_SMD:R_0805_2012Metric
R306	5k6	Resistor_SMD:R_0805_2012Metric
R307	49k9	Resistor_SMD:R_0805_2012Metric
R308	47k	Resistor_SMD:R_0805_2012Metric
R309	47k	Resistor_SMD:R_0805_2012Metric
R310	1k	Resistor_SMD:R_0805_2012Metric
R311	100k	Resistor_SMD:R_0805_2012Metric
R312	100k	Resistor_SMD:R_0805_2012Metric
R313	47k	Resistor_SMD:R_0805_2012Metric
R314	47k	Resistor_SMD:R_0805_2012Metric
R315	49k9	Resistor_SMD:R_0805_2012Metric
R316	1k	Resistor_SMD:R_0805_2012Metric
R317	49k9	Resistor_SMD:R_0805_2012Metric
R318	4M7	Resistor_SMD:R_0805_2012Metric
R319	4k7	Resistor_SMD:R_0805_2012Metric
R320	4M7	Resistor_SMD:R_0805_2012Metric
R321	47k	Resistor_SMD:R_0805_2012Metric
R322	150k	Resistor_SMD:R_0805_2012Metric
R323	680R	Resistor_SMD:R_0805_2012Metric
R324	680R	Resistor_SMD:R_0805_2012Metric
R325	47k	Resistor_SMD:R_0805_2012Metric
R326	10k	Resistor_SMD:R_0805_2012Metric
R327	680R	Resistor_SMD:R_0805_2012Metric
R328	22k	Resistor_SMD:R_0805_2012Metric
R329	4k7	Resistor_SMD:R_0805_2012Metric
R330	4k7	Resistor_SMD:R_0805_2012Metric
R331	4k7	Resistor_SMD:R_0805_2012Metric
R332	4k7	Resistor_SMD:R_0805_2012Metric
R333	22k	Resistor_SMD:R_0805_2012Metric
R334	6k8	Resistor_SMD:R_0805_2012Metric
R335	49k9	Resistor_SMD:R_0805_2012Metric
R336	10k	Resistor_SMD:R_0805_2012Metric
R337	470k	Resistor_SMD:R_0805_2012Metric
R338	100k	Resistor_SMD:R_0805_2012Metric
R339	1M	Resistor_SMD:R_0805_2012Metric
R340	22k	Resistor_SMD:R_0805_2012Metric
R341	100k	Resistor_SMD:R_0805_2012Metric
R342	11k	Resistor_SMD:R_0805_2012Metric
R343	10k	Resistor_SMD:R_0805_2012Metric
R344	1k	Resistor_SMD:R_0805_2012Metric
R345	11k	Resistor_SMD:R_0805_2012Metric
R346	10k	Resistor_SMD:R_0805_2012Metric
R347	1k	Resistor_SMD:R_0805_2012Metric
R348	5k6	Resistor_SMD:R_0805_2012Metric
R349	47k	Resistor_SMD:R_0805_2012Metric
R350	100k	Resistor_SMD:R_0805_2012Metric
R351	11k	Resistor_SMD:R_0805_2012Metric
R352	10k	Resistor_SMD:R_0805_2012Metric
R353	1k	Resistor_SMD:R_0805_2012Metric
R399	4M7	Resistor_SMD:R_0805_2012Metric
R401	100k	Resistor_SMD:R_0805_2012Metric
R402	4k7	Resistor_SMD:R_0805_2012Metric
R403	15k	Resistor_SMD:R_0805_2012Metric
R404	47k	Resistor_SMD:R_0805_2012Metric
R405	49k9	Resistor_SMD:R_0805_2012Metric
R406	5k6	Resistor_SMD:R_0805_2012Metric
R407	49k9	Resistor_SMD:R_0805_2012Metric
R408	47k	Resistor_SMD:R_0805_2012Metric
R409	47k	Resistor_SMD:R_0805_2012Metric
R410	1k	Resistor_SMD:R_0805_2012Metric
R411	100k	Resistor_SMD:R_0805_2012Metric
R412	100k	Resistor_SMD:R_0805_2012Metric
R413	47k	Resistor_SMD:R_0805_2012Metric
R414	47k	Resistor_SMD:R_0805_2012Metric
R415	49k9	Resistor_SMD:R_0805_2012Metric
R416	1k	Resistor_SMD:R_0805_2012Metric
R417	49k9	Resistor_SMD:R_0805_2012Metric
R418	4M7	Resistor_SMD:R_0805_2012Metric
R419	4k7	Resistor_SMD:R_0805_2012Metric
R420	4M7	Resistor_SMD:R_0805_2012Metric
R421	47k	Resistor_SMD:R_0805_2012Metric
R422	150k	Resistor_SMD:R_0805_2012Metric
R423	680R	Resistor_SMD:R_0805_2012Metric
R424	680R	Resistor_SMD:R_0805_2012Metric
R425	47k	Resistor_SMD:R_0805_2012Metric
R426	10k	Resistor_SMD:R_0805_2012Metric
R427	680R	Resistor_SMD:R_0805_2012Metric
R428	22k	Resistor_SMD:R_0805_2012Metric
R429	4k7	Resistor_SMD:R_0805_2012Metric
R430	4k7	Resistor_SMD:R_0805_2012Metric
R431	4k7	Resistor_SMD:R_0805_2012Metric
R432	4k7	Resistor_SMD:R_0805_2012Metric
R433	22k	Resistor_SMD:R_0805_2012Metric
R434	6k8	Resistor_SMD:R_0805_2012Metric
R435	49k9	Resistor_SMD:R_0805_2012Metric
R436	10k	Resistor_SMD:R_0805_2012Metric
R437	470k	Resistor_SMD:R_0805_2012Metric
R438	100k	Resistor_SMD:R_0805_2012Metric
R439	1M	Resistor_SMD:R_0805_2012Metric
R440	22k	Resistor_SMD:R_0805_2012Metric
R441	100k	Resistor_SMD:R_0805_2012Metric
R442	11k	Resistor_SMD:R_0805_2012Metric
R443	10k	Resistor_SMD:R_0805_2012Metric
R444	1k	Resistor_SMD:R_0805_2012Metric
R445	11k	Resistor_SMD:R_0805_2012Metric
R446	10k	Resistor_SMD:R_0805_2012Metric
R447	1k	Resistor_SMD:R_0805_2012Metric
R499	4M7	Resistor_SMD:R_0805_2012Metric
SW1	SPDT_ON-OFF-ON	NKK:M201xSS1x01
SW101	SPDT_ON-OFF-ON	NKK:M201xSS1x01
SW102	SPDT_ON-ON	NKK:M201xSS1x01
SW201	SPDT_ON-OFF-ON	NKK:M201xSS1x01
SW301	SPDT_ON-OFF-ON	NKK:M201xSS1x01
SW302	SPDT_ON-ON	NKK:M201xSS1x01
SW401	SPDT_ON-OFF-ON	NKK:M201xSS1x01
TR101	50k	Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical
TR201	50k	Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical
TR301	50k	Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical
TR401	50k	Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical
U1	L78L10	Package_TO_SOT_SMD:SOT-89-3
U101	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U102	4001	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U103/203	4066	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U104/204	LM13700	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
U105/205	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U2	TL072	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
U201	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U202	4001	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U301	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U302	4001	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U303/403	4066	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U304/404	LM13700	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
U305/405	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U401	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U402	4001	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
VR101	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR102	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR201	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR202	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR203	100kB	Alpha_Potentiometers:RD901F-40-00D
VR301	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR302	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR401	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR402	10kB	Alpha_Potentiometers:RV16AF-41-(L)R1-XXX
VR403	100kB	Alpha_Potentiometers:RD901F-40-00D

Provenance

Repository: DunningtonAudio/281D ↗
Commit: unknown
Licence: CC-BY-4.0

How it is used

Trace's agent reads this design as context — what parts a board like this carries, how they are grouped across sheets, what a plausible layer stack and board size look like for the job. It is not copied. The licence above is permissive, and it, the repository and the commit are recorded so the origin of anything derived from it is always answerable.