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Discussion History

Power Distribution Unit

Assembly

Switches and protects 28 VDC buses to all subsystems. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Power Distribution Unit parts and their functions

7 top-level parts · 390 parts in total · full bill of materials below
Power Distribution Unit parts diagram: 1 bare PCB, 2 power MOSFET, 3 power inductor, 4 relay, 5 microcontroller, 6 SMD passive (R/C/L), 7 connector. 390 parts in 7 top-level items.
Power Distribution Unit parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Bare PCB 2× Unpopulated printed circuit board: copper traces etched on an FR-4 glass-epoxy laminate that carry current between the components later soldered to it.
2 Power MOSFET 24× Power MOSFET: a voltage-controlled semiconductor switch that turns high currents on and off at high speed in converters and motor drives.
3 Power Inductor 6× Wound magnetic component that stores energy in switching converters, smoothing current and filtering ripple.
4 Relay 16× Electromechanical switch in which a small coil current closes or opens contacts rated for a much larger load, isolating control circuits from what they switch.
5 Microcontroller 2× Single-chip microcontroller combining a processor core, flash memory, RAM, and peripherals such as timers, ADCs, and serial ports to run the device's control firmware.
6 SMD Passive (R/C/L) 300× Surface-mount resistors, capacitors, and inductors, typically in 0402 to 1206 packages, that set voltages, filter noise, and time signals on a circuit board.
7 Connector 40× Mating plug-and-socket pair that joins two lengths of wiring or a cable to a board so a circuit can be assembled, serviced, and separated without soldering.

3D model

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Build & assembly graph

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Bill of materials for Power Distribution Unit

7 top-level lines · 7 rows shown · 390 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Bare PCB pcb-bare 2× 2 · part
2 Power MOSFET mosfet 24× 24 · part
3 Power Inductor power-inductor 6× 6 · part
4 Relay relay 16× 16 · part
5 Microcontroller mcu 2× 2 · part
6 SMD Passive (R/C/L) smd-passives 300× 300 · part
7 Connector connector 40× 40 · part

Where the power distribution unit is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Electrical Power System

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks