▓▓▓▓▓▓▓▓▓▓
▓▓▓▓▓▓▓▓▓▓▓▓▓▓
▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓
▓▓▓▓░░░░░░▓▓░░░░░░▓▓▓▓
░░░░▓▓░░░░░░░░░░░░░░░░░░▓▓░░░░
░░░░▓▓░░████░░░░░░████░░▓▓░░░░
░░▓▓░░██ ░░░░░░██ ░░▓▓░░
▓▓░░░░░░░░░░░░░░░░░░▓▓
▓▓░░░░░░░░░░░░░░▓▓
▓▓▓▓░░░░░░▓▓▓▓
▒░ ▓▓▓▓▓▓
▓▓ ▓▓▓▓▓▓▓▓▓▓
▓▓▓▓ ▓▓▓▓▓▓▓▓▓▓
▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓
▓▓▓▓░░▓▓░░▓▓▓▓
kicad monkey
kicad newstroke · modern webfont
ELECTRONICS REFERENCE
| Ohm's law | V = I×R |
| Power | P = V×I = I²R = V²/R |
| Capacitance | Q = C×V i = C ∂v/∂t |
| Inductance | v = L ∂i/∂t E = LI²/2 |
| Reactance | XC = 1/(2πfC) XL = 2πfL |
| Resonance | f₀ = 1/(2π√(LC)) |
| Time constant | τ = RC τ = L/R |
| Angular frequency | ω = 2πf |
| Wavelength | λ = c/f k = 2π/λ |
| Impedance | Z² = R² + (XL - XC)² |
| Thermal rise | ΔT = P × Rth |
FIELD EQUATIONS
| Acoustic wave | ∇²p = (1/c²) ∂²p/∂t² |
| Maxwell's equations | ∇·D = ρ(Gauss's Law) ∇·B = 0(Gauss's Law for Magnetism) ∇×E = -∂B/∂t(Faraday's Law) ∇×H = J + ∂D/∂t(Ampère-Maxwell Law) |
| Telegrapher | ∂V/∂x = -L ∂I/∂t - R·I ∂I/∂x = -C ∂V/∂t - G·V |
| Diffusion | ∂T/∂t = k∇²T |
| Navier-Stokes | ρ(∂v/∂t + v·∇v) = -∇p + µ∇²v |
| Einstein's field equations | Gμν + Λgμν = (8πG/c⁴)Tμν |
BILL OF MATERIALS
| Ref | Part number | Description |
|---|---|---|
| R1 | RC0603FR-0710KL | RES 10.0kΩ ±1% 100mW 0603 |
| R2 | ERJ-3EKF4992V | RES 49.9kΩ ±1% 100mW 0603 |
| R3 | WSL2512R0100FEA | RES SHUNT 10mΩ ±1% 1W 2512 |
| C1 | GRM188R71C104KA01D | CAP CER 0.1µF 16V X7R 0603 |
| C2 | C0805C475K8PACTU | CAP CER 4.7µF 10V X5R 0805 |
| C3 | UWT1V101MCL1GB | CAP ALUM 100µF 35V ±20% SMD |
| L1 | LQW18AN10NJ00D | IND 10nH ±5% Q=27 @ 250MHz 0603 |
| L2 | SRP6540-4R7M | IND PWR 4.7µH ±20% 8.5A SHIELDED |
| FB1 | BLM18AG601SN1D | FERRITE 600Ω @ 100MHz 500mA 0603 |
| Y1 | ABM8-8.000MHZ-B2-T | XTAL 8.000MHz ±20ppm 18pF SMD |
| D1 | SS34-E3/57T | DIODE SCHOTTKY 40V 3A DO-214AB |
| U1 | LMR33630ADDAR | BUCK REG 3.6-36V 3A 400kHz SO-8 |
FABRICATION NOTES
- OVERALL PCB DIMENSIONS: 47.0mm × 12.0mm. BOARD OUTLINE DEFINED ON LAYER Edge.Cuts. ALL ROUTED DIMENSIONS ±0.2mm UNLESS NOTED AS CRITICAL.
- BOARD THICKNESS: 1.6mm ±10%, 4-LAYER STACKUP, SINGLE LAMINATION.
- LAMINATE: FR-4 PER IPC-4101/126, TG ≥ 170°C, TD ≥ 340°C.
- COPPER WEIGHT: 1 OZ/FT² (35µm) OUTER LAYERS, 0.5 OZ/FT² (17µm) INNER LAYERS.
- SURFACE FINISH: ENIG PER IPC-4552, 2-4 µIN (0.05-0.10 µm) AU OVER 120-240 µIN (3-6 µm) NI.
- MINIMUM DRILL SIZE: 0.25mm (10 MIL). MINIMUM TRACE/SPACE: 0.127mm (5 MIL).
- CONTROLLED IMPEDANCE: 50Ω ±10% SINGLE-ENDED, 90Ω ±10% DIFFERENTIAL, REFERENCED TO L2.
- SOLDER MASK: BLACK LPI BOTH SIDES PER IPC-SM-840 CLASS T.
- SILKSCREEN: WHITE LPI INK, COMPONENT SIDE ONLY.
- NC DRILL FILE PROVIDED WITH .TXT EXTENSION.
- MOUSEBITES PERMITTED ON SHORT EDGES ONLY. LONG EDGES SHALL BE FREE OF PROTRUSIONS. FAB MAY USE ROUTING OR V-SCORE.
- PCB SHALL BE 100% ELECTRICALLY TESTED PER IPC-9252.
GREEK AND SYMBOLS
CapitalsΑ Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω
Lowercaseα β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω
Symbols° ± ² ³ ⁴ ₀ ₁ ₂ × ÷ · µ Ω ∂ ∆ ∇ √ ∑ ∫ ∞ ≈ ≠ ≤ ≥ ← → ↑ ↓ • Å ⏚
WEIGHTS
| Light | R7 4.7kΩ ±1% | C2 0.1µF 25V | L1 10µH |
| Regular | R7 4.7kΩ ±1% | C2 0.1µF 25V | L1 10µH |
| Bold | R7 4.7kΩ ±1% | C2 0.1µF 25V | L1 10µH |