# 555 Timer Astable ## Description The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. ## Project Details - **Owner:** breyson - **Created:** 6/2/2025 - **Last Updated:** 6/2/2025 - **Visibility:** Public - **Forks:** 1 ## Key Components ### D1 — [1N4005W](https://www.flux.ai/lcsc/1n4005w~nzwg.md) - Manufacturer Part Number: 1N4005W - LCSC Part Number: C437593 - Manufacturer Name: 晶导微电子 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-1N4005W_C437593.pdf - Package or Case Code: SOD-123FL_L2.7-W1.8-LS3.8-RD - Part Type: Diodes - General Purpose - JLCPCB Part Class: Extended Part **Pins:** - A [pin 2] - K [pin 1] ### D2 — [1N4005W](https://www.flux.ai/lcsc/1n4005w~nzwg.md) - Part Type: Diodes - General Purpose - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 1N4005W - Manufacturer Name: 晶导微电子 - LCSC Part Number: C437593 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-1N4005W_C437593.pdf - Package or Case Code: SOD-123FL_L2.7-W1.8-LS3.8-RD **Pins:** - A [pin 2] - K [pin 1] ### D3 — [1N4005W](https://www.flux.ai/lcsc/1n4005w~nzwg.md) - Part Type: Diodes - General Purpose - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 1N4005W - LCSC Part Number: C437593 - Manufacturer Name: 晶导微电子 - Package or Case Code: SOD-123FL_L2.7-W1.8-LS3.8-RD - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-1N4005W_C437593.pdf **Pins:** - A [pin 2] - K [pin 1] ### D4 — [1N4005W](https://www.flux.ai/lcsc/1n4005w~nzwg.md) - Package or Case Code: SOD-123FL_L2.7-W1.8-LS3.8-RD - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-1N4005W_C437593.pdf - Manufacturer Name: 晶导微电子 - Manufacturer Part Number: 1N4005W - LCSC Part Number: C437593 - JLCPCB Part Class: Extended Part - Part Type: Diodes - General Purpose **Pins:** - A [pin 2] - K [pin 1] ### D5 — [1N4005W](https://www.flux.ai/lcsc/1n4005w~nzwg.md) - LCSC Part Number: C437593 - Manufacturer Name: 晶导微电子 - Manufacturer Part Number: 1N4005W - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-1N4005W_C437593.pdf - Package or Case Code: SOD-123FL_L2.7-W1.8-LS3.8-RD - Part Type: Diodes - General Purpose - JLCPCB Part Class: Extended Part **Pins:** - A [pin 2] - K [pin 1] ### D7 — [1N4744A](https://www.flux.ai/lcsc/1n4744a~u447.md) - LCSC Part Number: C238928 - JLCPCB Part Class: Extended Part - Manufacturer Name: onsemi(安森美) - Package or Case Code: DO-41_BD2.4-L4.7-P8.70-D0.9-RD - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010400_onsemi-1N4744A_C238928.pdf - Product Info Url: https://lcsc.com/product-detail/Zener-Diodes_ON-Semicon_1N4744A_ON-Semicon-ON-1N4744A_C238928.html - Part Type: Zener Diodes - Manufacturer Part Number: 1N4744A **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Part Number: 691137710002 - Part Type: Connector - Manufacturer Name: Würth Elektrik **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Part Number: 691137710002 - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Part Type: Connector - Manufacturer Name: Würth Elektrik **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — Generic 555 Timer - Part Type: Integrated Circuit **Pins:** - 1 (GND) - 2 (TRIG) - 3 (OUT) - 4 (RESET) - 5 (CONT) - 6 (THRES) - 7 (DISCH) - 8 (Vcc) *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/breyson/555-timer-astable~qx](https://www.flux.ai/breyson/555-timer-astable~qx).* --- *Generated from [https://www.flux.ai/breyson/555-timer-astable~qx](https://www.flux.ai/breyson/555-timer-astable~qx)*