Shenzhen Xunsiwei Circuit Co., Ltd.
| Layer Count | 4-Layer Heavy Copper |
| Supply Ability | 1 Million Square Feet per Month |
| Back Drilling Stub | < 0.2 mm |
| Packaging Details | Anti-static bag with desiccant, vacuum-packed, export-grade corrugated carton |
| Board Thickness | 1.6 mm (Customizable) |
| Thermal Vias | Copper-filled arrays |
| Min Line Width / Spacing | 0.15 mm / 0.15 mm |
| Delivery Time | 8-15 Days |
| Solder Mask Color | Green |
| Surface Finish | HASL Lead-Free |
| Material | FR-4 High-Tg 170 |
| Payment Terms | T/T, Western Union, PayPal |
| Outer / Inner Copper | 3 oz / 2 oz |
| Place of Origin | China |
| Model Number | XSW-PWR3 |
| Brand Name | XSW PCB |
| Certification | UL, ISO9001 |
View Detail Information
Explore similar products
6 Layer Drone PCB Board Assembly FR-4 TG150 Custom PCBA
OEM FR4 Double Sided PCB Board Prototype PCB Board For Drone
Custom Drone Receiver Circuit Board PCB Electronic Board One Stop SMT PCB
FR-4 Multilayer PCB Manufacturing Process HASL Surface Finish PCBA For Drone
Product Specification
| Layer Count | 4-Layer Heavy Copper | Supply Ability | 1 Million Square Feet per Month |
| Back Drilling Stub | < 0.2 mm | Packaging Details | Anti-static bag with desiccant, vacuum-packed, export-grade corrugated carton |
| Board Thickness | 1.6 mm (Customizable) | Thermal Vias | Copper-filled arrays |
| Min Line Width / Spacing | 0.15 mm / 0.15 mm | Delivery Time | 8-15 Days |
| Solder Mask Color | Green | Surface Finish | HASL Lead-Free |
| Material | FR-4 High-Tg 170 | Payment Terms | T/T, Western Union, PayPal |
| Outer / Inner Copper | 3 oz / 2 oz | Place of Origin | China |
| Model Number | XSW-PWR3 | Brand Name | XSW PCB |
| Certification | UL, ISO9001 | ||
| High Light | Heavy Copper 3oz Power PCB ，Back Drilling Power Board Fabrication ，Drone ESC Motor Drive PCB | ||
This heavy copper power PCB is purpose-built for drone electronic speed controllers (ESC), motor drivers and battery management boards. Featuring 3 oz outer copper, 2 oz inner copper and depth-controlled back drilling, it delivers the high current carrying capability and low thermal resistance demanded by high-power UAV propulsion systems.
| Layer Count | 4-Layer (heavy copper power stack-up) |
| Material | FR-4 High-Tg 170 |
| Board Thickness | 1.6 mm (Customizable 1.0-3.2 mm) |
| Outer / Inner Copper | 3 oz / 2 oz (up to 6 oz on request) |
| Min Line Width / Spacing | 0.15 mm / 0.15 mm |
| Back Drilling | Depth-controlled, stub length < 0.2 mm |
| Thermal Vias | Copper-filled thermal via arrays |
| Solder Mask | Green |
| Surface Finish | HASL Lead-Free |
3 oz copper is electroplated with consistent thickness across the whole panel, using optimized shield and current density to avoid over-plating and under-plating that cause uneven current paths.
Etching 3 oz copper demands tight side-etch control to protect fine features and minimize undercut, keeping trace width within tolerance for predictable current rating.
Back drilling removes via stubs to a controlled depth (< 0.2 mm stub) with high positional accuracy, reducing signal reflection and preventing copper burrs inside the via barrels.
Copper-filled thermal vias and heavy copper planes are combined to pull heat away from power MOSFETs, keeping ESC junction temperatures under control during aggressive throttle.
Uniform solder mask coating is achieved over the raised heavy copper surface, preventing mask skip, bubbles and exposed copper that lead to short risks during assembly.
| Application | Drone ESC, brushless motor driver, BMS and power distribution boards |
| Current Capability | Designed for high-current propulsion and power conversion circuits |
| Assembly Service | SMT assembly with high-mass soldering and selective solder available |
| Testing | Flying probe, thermal cycling, AOI and 100% electrical test |
Company Details
Business Type:
Manufacturer
Year Established:
2009
Total Annual:
600 million-1000 million
Employee Number:
500~800
Ecer Certification：
Verified Supplier
Shenzhen Xunsiwei Circuits Co., Ltd. is a professional manufacturer dedicated to the production of high-precision printed circuit boards. Our core product portfolio encompasses single-sided, double-sided, and multilayer PCBs, as well as advanced solutions such as blind/buried via and HDI boards. T... Shenzhen Xunsiwei Circuits Co., Ltd. is a professional manufacturer dedicated to the production of high-precision printed circuit boards. Our core product portfolio encompasses single-sided, double-sided, and multilayer PCBs, as well as advanced solutions such as blind/buried via and HDI boards. T...
Get in touch with us
Leave a Message, we will call you back quickly!