ETI-438
About the ETI-438 PCB
ETI-438 is an open source PCB design by eyalo-dev, published on GitHub. It is a 2-layer board measuring 102.9 × 79.4 mm, with 44 components from 23 distinct parts.
Other key parts include the LM3900 and LM339. By type, the board carries 22 resistors, 8 LEDs, 5 capacitors, 3 ICs, 3 diodes and 2 transistors.
From the project
my public CAD/PCB files
Source reference: - ETI-1975-12.pdf p.51 (49) (without PCB) - ETI-1976-Top Projects 4.pdf, p. 17 (26) (reprint with PCB image - small)
This is functional similar but not exact copy. All dimension were estimated by eye. Tried to use similar component placment as much as posible, but using only Kicad standard PCB component footprint library, so dimentions may very.
Main components on the ETI-438
ETI-438 bill of materials (BOM)
44 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM3900 | DIP-14_W7.62mm_Socket_LongPads | U1 |
| 2 | LM339 | DIP-14_W7.62mm_Socket_LongPads | U2, U3 |
| 1 | BD140 | TO-126-3_Horizontal_TabUp | Q1 |
| 1 | BC557 | TO-39-3 | Q2 |
| 1 | 5.1V | D_DO-35_SOD27_P7.62mm_Horizontal | DZ1 |
| 8 | LED | LED_D5.0mm_Clear | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 |
| 2 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 1 | 1N4007 | D_DO-35_SOD27_P7.62mm_Horizontal | D3 |
| 4 | 1uF | CP_Radial_D8.0mm_P5.00mm | C1, C2, C3, C4 |
| 1 | 47uF/35V | CP_Radial_D8.0mm_P5.00mm | C5 |
| 7 | 1M | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R3, R4, R7, R8, R9 |
| 1 | * | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R5 |
| 3 | 100K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R6, R10, R11 |
| 2 | 3K3 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12, R22 |
| 1 | 2K7 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R13 |
| 1 | 2K2 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R14 |
| 1 | 1K5 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R15 |
| 1 | 1K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R16 |
| 1 | 680 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R17 |
| 1 | 560 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R18 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 390 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R19 |
| 1 | 820 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R20 |
| 1 | 68R | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R21 |
ETI-438 design files
The KiCad project lives in the eyalo-dev/cad-public repository on GitHub; these links point at the commit this page was built from.
ETI-438: common questions
How big is the ETI-438 PCB?
The ETI-438 measures 102.9 × 79.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ETI-438?
44 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the ETI-438 design files?
From the eyalo-dev/cad-public repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ETI-438 design in my own project?
The repository has no license, so all rights stay with eyalo-dev. Use it as a reference, and ask the author before reusing the design.
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