Product overview
The HOBBYWING Platinum 120A V5 is an electronic speed controller for brushless aircraft propulsion. Its stated application covers 420–520 class electric helicopters with 420–520mm main blades, plus fixed-wing aircraft. Procurement therefore concerns a propulsion-control component rather than a complete flight platform or airframe kit. The published electrical envelope combines a 3–8S LiPo input with 120A continuous and 150A peak current ratings. A 32-bit processor, an RPM accuracy algorithm and adjustable constant-speed sensitivity form the manufacturer's described speed-control architecture.
Installation planning should use the qualified dimensions of 83.2 × 37.1 × 22.5mm without a fan and the 150.4g weight with wires but without a fan. The housing uses a double-sided hollow cooling structure and a side window to pass air through the electronics. The listed wiring comprises two 150mm 10AWG input leads and three 100mm 12AWG output leads. Input connectors are absent, while the outputs have 4.0mm female gold connectors.
The integrated switch BEC is specified at 5–12V, with 10A continuous and 30A peak output. The overview separately states a maximum up to 35A. Programming provisions include a separate port, LCD program box and OTA programmer support, and firmware upgrades. The table excludes transmitter and LED programming methods, while the overview describes VBar parameter adjustment. Telemetry lists Mikado VBar and Futaba S.Bus2. Accessory inclusion is unconfirmed, and the telemetry adapter specifically requires compatibility checks against the ESC manual.
Specifications
| Specification | Value & conditions |
|---|---|
| Product name | Platinum 120A V5 |
| Product number | 30203402 |
| Motor type | Brushless (BL) |
| Voltage class | Regular |
| Continuous / peak current | 120A / 150A |
| Input voltage | 3–8S LiPo |
| BEC output | Switch mode; 5–12V; continuous 10A, peak 30ASpecification-table rating; the overview separately states a maximum output current up to 35A. Confirm the applicable BEC rating. |
| Input wires | One red 10AWG wire, 150mm; one black 10AWG wire, 150mm |
| Output wires | Three black 12AWG wires, 100mm each |
| Input connectors | None |
| Output connectors | 4.0mm female gold connectors |
| Transmitter programming | Not supportedApplies to the specification table's ESC programming method; the overview separately describes parameter adjustment through VBar. |
| LED program card | Not supported |
| LED program box | Not supported |
| LCD program box | Supported |
| OTA programmer | Supported |
| Programming port | Separate programming port |
| Firmware upgrade | Supported |
| Telemetry | Mikado VBar; Futaba S.Bus2; other protocols unspecifiedNamed protocols are manufacturer-listed examples; confirm the intended telemetry integration. |
| Dimensions | 83.2 × 37.1 × 22.5mm, without fanDimensions exclude the fan. |
| Weight | 150.4g, with wires and without fanWeight includes wires and excludes the fan. |
| Application scope | 420–520 class electric helicopter with 420–520mm main blades, or fixed-wing aircraftHelicopter scope is qualified by main blade length; fixed-wing scope has no further size qualification. |
| S.Bus2 telemetry adapter for Futaba | Part number 30850500; 25 × 13 × 6mm; compatibility requires manual confirmationListed accessory; inclusion is not established. |
| Multifunction LCD program box | Part number 30502001; 91 × 51 × 17mm (L × W × H)Listed accessory for Platinum brushless aircraft ESCs; inclusion is not established. |
| OTA programmer accessory specifications | Product number 30850400; working voltage 5–12.6V; Bluetooth ≥4.0; effective range 0–5m in an open fieldListed accessory for Platinum aircraft ESCs; effective range applies in an open field. Inclusion is not established. |
| LCD Program Box Pro | Product number 30502002; DC 5–12.6V input; brushless ESC application; 85g; LCD displayListed accessory with a general brushless ESC application statement; inclusion and exact compatibility are not established. |
| Physical architecture | Double-sided hollow heat-dissipation structure with a side window and airflow through the ESC interiorCooling architecture; fan inclusion is not established. |
| Speed-control architecture | 32-bit processor, RPM accuracy algorithm and adjustable constant-speed sensitivityControl features. |
| BEC overview and external-battery provision | Built-in programmable switch BEC; adjustable 5–12V; overview maximum current up to 35A; anti-reverse circuit described for parallel operation with external batteriesConfirm the applicable rating and external-battery arrangement. |
| Protection functions | Start-up, current, temperature, overload, throttle-signal-loss and abnormal-input-voltage protectionManufacturer-listed protection functions. |
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