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Raspberry Pi 5 HAT Design Discussion

flux

1:07

Checking if I can make the changes for you.

Here’s the components change plan to add the core parts you requested. This turn focuses only on enumerating the parts to add (no wiring yet). I selected specific, industrial-friendly MPNs. If you prefer alternatives (e.g., eFuse vs PTC), say so and I’ll adjust.
Added components

Table

Part NamePurposeManufacturer Part NumberQuantityFootprintDatasheet link
40-pin Pass-through Header (RPi HAT stackable)Provides stackable GPIO connection to Raspberry Pi 5 and pass-through to other HATsM20-610204512×20 THPDF
HAT+ ID EEPROM (3.3 V)Stores HAT identification; connected only to GPIO0/1 with 3.3 V pull-ups24LC32A-I/P1DIP-8/ SOIC-8 (prefer SOIC-8)PDF
I2C Pull-up Resistor 4.7 kΩPull-up on 3.3 V ID bus (GPIO0/1)RC0603FR-074K7L20603PDF
Decoupling Capacitor 100 nFLocal decouple for ID EEPROMCL10B104KB8NNNC10603PDF
I2C Level TranslatorBidirectional I2C translation between Pi 3.3 V and device 5 V bussesPCA9306DCUR1VSSOP-8PDF
I2C Pull-up Resistor 4.7 kΩPull-up on Pi-side I2C1 (3.3 V)RC0603FR-074K7L20603PDF
I2C Pull-up Resistor 4.7 kΩPull-up on device-side I2C (5 V)RC0603FR-074K7L20603PDF
Decoupling Capacitor 100 nFLocal decouple for PCA9306CL10B104KB8NNNC10603PDF
PWM Controller (16-ch, 12-bit)Core PWM engine at 5 V; exposes 6 buffered channels + 10 sparePCA9685PW1TSSOP-28PDF
Address Solder Jumpers (A0..A5)Configure PCA9685 I2C address; default 0x40SJ-3523-SMT63-pad SJPDF
OE Pull-up Resistor 10 kΩHolds OE deasserted by default; optional link to GPIORC0603FR-0710KL10603PDF
Decoupling Capacitor 100 nFLocal decouple for PCA9685CL10B104KB8NNNC10603PDF
Bulk Capacitor ≥47 µFLocal bulk for PCA9685 5 V railEEE-FT1V470AP1SMD ElecPDF
Inverting Schmitt Buffer (hex)Robust 5 V output buffering for 6 primary channelsSN74HC14D1SOIC-14PDF
Series Resistor 47 ΩDamping resistor at each buffered output (CH1..CH6)RC0603FR-0747RL60603PDF
Optional RC Cap Pad 0–100 pF (DNP)Edge-rate tuning near connector per channelCL10C100JB8NNNC60603PDF
Low-cap ESD TVS (2-line)Per-channel ESD protection at connector edgeESD9M5V-DL6SOD-923 or DFNPDF
Screw Terminal 3-pos, 5.0 mm, verticalField I/O for each primary channel: PWM, +5 V, GND6911377100036TH 5.0 mmPDF
Spare Channel Series Resistor 220 ΩSeries limit for 10 spare outputs to padsRC0603FR-07220RL100603PDF
Test/Expansion Thru-hole PadsExpose spare channels (DNP connectors)TP_TH_1.0mm10TH pad___
Decoupling Capacitor 100 nFLocal decouple for SN74HC14CL10B104KB8NNNC10603PDF
External 5 V Input Terminal (2-pos)Optional field power entry for terminals6911377100021TH 5.0 mmPDF
Resettable Fuse PTC (hold ~1.1 A)Protect external 5 V input pathMF-MSMF110/16X11206PDF
TVS Diode SMBJ5.0ASurge/ESD at external 5 V entrySMBJ5.0A1SMBPDF
Power Inductor 1 µH ≥1 ALC filter for external 5 VSRN4018-1R0M14.0×4.0 mmPDF
Ceramic Capacitor 10 µF, 25 V X7RLC filter output decouplingCL10A106MQ8NNNC10603PDF
Bulk Capacitor 100 µFExternal 5 V bulk after filterEEE-FT1E101AP1SMD ElecPDF
0 Ω Link (DNP)Backfeed link between filtered 5 V and Pi 5 V (default open)RC0603JR-070RL10603PDF
Solder Bridge (OE to GPIO option)Optional route OE to Pi GPIO for global muteSJ-3523-SMT13-pad SJPDF
Notes
  • If you’d rather use an eFuse (integrated OCP/OVP) instead of a PTC, I can swap the PTC line item for a common eFuse (e.g., TPS2595x family) and add its passives.
  • If you prefer SN74AHC14 for sharper edges, I can substitute it one-for-one.
  • Test pad symbol is a placeholder; we’ll place 10 labeled pads for spare channels.
Would you like me to proceed with wiring the connection skeleton in the next step after these components are added?
214 days
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Sign up to send
J1
+5V
PCIE_PWR_EN
PCIE_CLK_N
PCIE_RX_P
PCIE_RX_N
PCIE_CLK_P
PCIE_TX_P
PCIE_CLKREQ_N
PCIE_TX_N
PCIE_DET_WAKE
PCIE_RST_B

Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M

Raspberry Pi 5 Hat with PCIe Template

Raspberry Pi 5 Hat with PCIe Template thumbnail
Template for Raspberry Pi 5 Model Shield. Include an official pinout so you will always know Raspberry Pi names, the alternative roles of pins, which one is SDA, or SCL, etc. On PCB you can find the 3D model of the Raspberry Pi itself along with the board outline on the silkscreen. #RaspberryPi #Raspberry #RaspberryPi5 #raspberry #Pi #RPi #Shield #template #project #project-template

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