Electrical Control Box Assembly
The sealed enclosure holding the main logic board, compressor and fan inverters, and EMC filtering, with a refrigerant-cooled heat sink for the power stages. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
7 top-level lines · 18 rows shown · 628 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Main Control Board 5 parts | vrf-outdoor-unit-main-pcb | 1× | 1 | 277 | assembly |
| 1.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 1.2 | Microcontroller | mcu | 2× | 2 | — | part |
| 1.3 | SMD Passive (R/C/L) | smd-passives | 260× | 260 | — | part |
| 1.4 | Relay | relay | 4× | 4 | — | part |
| 1.5 | Connector | connector | 10× | 10 | — | part |
| 2 | Inverter Power Board 6 parts | vrf-outdoor-unit-inverter-pcb | 2× | 2 | 166 | assembly |
| 2.1 | Bare PCB | pcb-bare | 1× | 2 | — | part |
| 2.2 | IGBT Power Module | igbt-module | 1× | 2 | — | part |
| 2.3 | Power MOSFET | mosfet | 6× | 12 | — | part |
| 2.4 | SMD Passive (R/C/L) | smd-passives | 150× | 300 | — | part |
| 2.5 | Hall Sensor | hall-sensor | 2× | 4 | — | part |
| 2.6 | Connector | connector | 6× | 12 | — | part |
| 3 | Noise Filter Board | vrf-outdoor-unit-filter-pcb | 1× | 1 | — | part |
| 4 | DC Reactor | vrf-outdoor-unit-reactor | 2× | 2 | — | part |
| 5 | Communication Terminal Block | vrf-outdoor-unit-comms-terminal | 1× | 1 | — | part |
| 6 | Wire Bundle | wire-bundle | 1× | 1 | — | part |
| 7 | Connector | connector | 14× | 14 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $0.50–$100 · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| 🇨🇳Foxconn foxconn.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |