2 layers107 × 92 mm
2 layers54 × 94 mm
Timer display digit
ScotteC/timer-display- Size
- 54 × 94 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 75
- Pads
- 197
- Tracks, vias
- 218, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 16 Aug 2023
- Updated
- 21 Feb 2024
Overview
Timer display digit is an open-source printed circuit board by ScotteC, from the ScotteC/timer-display repository on GitHub. It is a 2-layer board of 54 × 94 mm with 62 parts on 75 nets, routed with 218 tracks and 11 vias.
It is built around the SN74LS08D, LTST-C171KRKT and IRLML6346, with the MBT3904DW1 among its other parts. Its parts include 21 resistors, 21 diodes, 14 transistors, 3 capacitors and 3 ICs. It belongs with the lEDs and displays boards of this library.
Main components
4
SN74LS08D
SOIC-140℃~+70℃ 2 2.7V~3.4V 20ns@5V,15pF 250mV~400mV、350mV~500mV 2V 4 4.75V~5.25V 400uA 74LS Series 800mV 8mA AND Gate SOIC-14 Logic Gates ROHSTexas InstrumentsLogic Gates
LTST-C171KRKT
0805-55℃~+85℃ 130° 20mA 2V 54mcd 631nm 639nm 75mW Discrete Diode Red Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
IRLML6346
SOT-23MOSFETsLeiditech
MBT3904DW1
SOT-363-55℃~+150℃ 100 150mW 2 NPN 200mA 300MHz 300mV 40V 50nA 6V NPN SOT-363 Bipolar (BJT) ROHSonsemiBipolar (BJT)
README
README.mdtimer-display
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | LTST-C171KRKT | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +5 |
| 7 | 10 | Resistor_SMD:R_0603_1608Metric | R2, R5, R8, R11, R14, R17, R20 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R4, R7, R10, R13, R16, R19 |
| 7 | 36 | Resistor_SMD:R_0603_1608Metric | R3, R6, R9, R12, R15, R18, R21 |
| 7 | IRLML6346 | Package_TO_SOT_SMD:SOT-23 | Q2, Q4, Q6, Q8, Q10, Q12, Q14 |
| 7 | MBT3904DW1 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q1, Q3, Q5, Q7, Q9, Q11, Q13 |
| 3 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3 |
| 2 | SN74LS08 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U2 |
| 1 | SN74HC595DT | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3 |
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Questions
How big is the Timer display digit PCB?
It measures 54 × 94 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Timer display digit use?
62 parts, built around the SN74LS08D, LTST-C171KRKT, IRLML6346 and MBT3904DW1. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Timer display digit KiCad files?
From the ScotteC/timer-display repository on GitHub, at the commit this page was made from: the board is timer-display-digit.kicad_pcb and its schematic segment.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Timer display digit design in my own project?
Its repository states no licence, so its author keeps all rights: ask ScotteC before reusing the design.