# Car Audio Power Transfer Switch Manager 287e ## Description Automatic 5V relay/telemetry manager for high-power car audio power-transfer control using a LilyGO T-Display-S3 module. ## Project Details - **Owner:** audioplanta - **Created:** 5/20/2026 - **Last Updated:** 5/20/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### D1 — [1N4007_AY_10001](https://www.flux.ai/lcsc/1n4007ay10001~56d.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811061711_PANJIT-International-1N4007-AY-10001_C115999.pdf - Manufacturer Name: PANJIT(强茂) - Part Type: Diodes - General Purpose - Package or Case Code: DO-41_BD2.4-L4.7-P8.70-D0.9-RD - Manufacturer Part Number: 1N4007_AY_10001 - JLCPCB Part Class: Extended Part - LCSC Part Number: C115999 - Product Info Url: https://lcsc.com/product-detail/Diodes-General-Purpose_1N4007_C115999.html **Pins:** - A [pin 2] - C [pin 1] ### J1 — [Pin Socket 01x14 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x14-254mm-vertical~h24.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J2 — [Pin Socket 01x14 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x14-254mm-vertical~h24.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J3 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Connector Positions: 2 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - JLCPCB Part Class: Extended Part - LCSC Part Number: C474952 - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Connector Pitch: 5.08mm - Part Type: Screw terminal - Manufacturer Name: KEFA(科发) - Current Rating: 24A - Connector Rows: 1 - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Manufacturer Part Number: KF128-5.08-2P-AA - Operating Temperature: -40℃~+105℃ **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Current Rating: 24A - Connector Rows: 1 - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Part Type: Screw terminal - Manufacturer Name: KEFA(科发) - Operating Temperature: -40℃~+105℃ - Manufacturer Part Number: KF128-5.08-2P-AA - LCSC Part Number: C474952 - Connector Positions: 2 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - JLCPCB Part Class: Extended Part - Connector Pitch: 5.08mm - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J5 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Connector Positions: 2 - LCSC Part Number: C474952 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Connector Type: Screw terminal - Connector Gender: Female - Connector Pitch: 5.08mm - Manufacturer Name: KEFA(科发) - Part Type: Screw terminal - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Rows: 1 - Current Rating: 24A - Manufacturer Part Number: KF128-5.08-2P-AA - Operating Temperature: -40℃~+105℃ **Pins:** - 1 [pin 1] - 2 [pin 2] ### J6 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Connector Positions: 2 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - JLCPCB Part Class: Extended Part - LCSC Part Number: C474952 - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Connector Pitch: 5.08mm - Part Type: Screw terminal - Manufacturer Name: KEFA(科发) - Current Rating: 24A - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Rows: 1 - Manufacturer Part Number: KF128-5.08-2P-AA - Operating Temperature: -40℃~+105℃ **Pins:** - 1 [pin 1] - 2 [pin 2] ### J7 — [B2B-PH-K-S](https://www.flux.ai/adrian95/b2b-ph-k-s~fx.md) - Package or Case Code: JST_B2B-PH-K-S - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Name: JST **Pins:** - 1 [pin 1] - 2 [pin 2] ### K1 — [SRD-05VDC-SL-C](https://www.flux.ai/vasy_skral/srd-05vdc-sl-c~go1.md) - Part Type: Relay - Datasheet URL: https://www.circuitbasics.com/wp-content/uploads/2015/11/SRD-05VDC-SL-C-Datasheet.pdf - Manufacturer Name: Ningbo Songle Relay - Manufacturer Part Number: SRD-05VDC-SL-C **Pins:** - A1 [pin A1] - A2 [pin A2] - COM [pin COM] - NC [pin NC] - NO [pin NO] ### Q1 — [2N7000-D26Z](https://www.flux.ai/lcsc/2n7000-d26z~lln1.md) - Part Type: MOSFETs - Manufacturer Name: onsemi(安森美) - LCSC Part Number: C258193 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302136_onsemi-2N7000-D26Z_C258193.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_ON-Semicon_2N7000-D26Z_ON-Semicon-ON-2N7000-D26Z_C258193.html - JLCPCB Part Class: Extended Part - Package or Case Code: TO-92-3_L4.8-W3.7-P2.54-L - Manufacturer Part Number: 2N7000-D26Z **Pins:** - D [pin 3] - G [pin 2] - S [pin 1] ### U1 — [EL817](https://www.flux.ai/jecstronic/el817~bez.md) - Manufacturer Name: Everlight Electronics Co Ltd - Part Type: Isolator - Manufacturer Part Number: EL817 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://componentsearchengine.com/Datasheets/1/EL817.pdf **Pins:** - ANODE [pin 1] - CATHODE [pin 2] - COLLECTOR [pin 4] - EMITTER [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/audioplanta/car-audio-power-transfer-switch-manager-287e~8n](https://www.flux.ai/audioplanta/car-audio-power-transfer-switch-manager-287e~8n).* --- *Generated from [https://www.flux.ai/audioplanta/car-audio-power-transfer-switch-manager-287e~8n](https://www.flux.ai/audioplanta/car-audio-power-transfer-switch-manager-287e~8n)*