# 555 discrete V2 ## Description A discrete 555 timer plug-in replacement composed of 26 transistors and 16 resistors. #N555 #transistor #resistor ## Project Details - **Owner:** vasyl - **Created:** 9/27/2023 - **Last Updated:** 9/27/2023 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Stars:** 2 - **Copies:** 1 ## Key Components ### Q1 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Name: onsemi - Part Type: Transistor - Manufacturer Part Number: MMBT4403 - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q10 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT4403 - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q11 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Part Number: MMBT4403 - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Manufacturer Name: onsemi **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q12 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Part Type: Transistor - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - Manufacturer Part Number: MMBT4403 **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q13 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - Manufacturer Part Number: MMBT4403 - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q14 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q15 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q16 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q17 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Part Type: Transistor - Manufacturer Name: onsemi - Manufacturer Part Number: MMBT4403 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q18 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT4403 - Part Type: Transistor - Manufacturer Name: onsemi **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q19 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: onsemi **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q2 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Name: onsemi - Part Type: Transistor - Manufacturer Part Number: MMBT4403 - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q20 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Name: onsemi - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - Manufacturer Part Number: MMBT4403 **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q21 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: onsemi **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q22 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Part Type: Transistor - Manufacturer Name: onsemi - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT4403 **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q23 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q24 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT4403 - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q25 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 - Manufacturer Name: onsemi **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q29 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Name: onsemi - Part Type: Transistor - Manufacturer Part Number: MMBT4403 - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q3 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 - Manufacturer Name: onsemi **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q4 — [MMBT4403](https://www.flux.ai/adrian95/mmbt4403~nvf.md) - Manufacturer Part Number: MMBT4403 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.snapeda.com/parts/MMBT4403/ON%20Semiconductor/datasheet/ - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - B [pin B] - C [pin C] - E [pin E] ### Q5 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q6 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q7 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q8 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT5551 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Part Type: Transistor **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q9 — [MMBT5551](https://www.flux.ai/adrian95/mmbt5551~1w8.md) - Manufacturer Part Number: MMBT5551 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ON%20Semiconductor%20PDFs/2N5551,MMBT5551.pdf - Manufacturer Name: onsemi **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/555-discrete-v2~m5f](https://www.flux.ai/vasyl/555-discrete-v2~m5f).* --- *Generated from [https://www.flux.ai/vasyl/555-discrete-v2~m5f](https://www.flux.ai/vasyl/555-discrete-v2~m5f)*