PCM-39-B2 IGBT Inverter Power Board with 4× 40T120 for ZX7-250GS/250G/315GS Welding Machine
The PCM-39-B2 IGBT Inverter Power Board is a replacement power-stage circuit board designed for compatible ZX7 series inverter welding machines, including ZX7-250GS, ZX7-250G, and ZX7-315GS models. It forms an important part of the welding machine’s inverter power conversion section, where high-voltage DC power is switched at high frequency before being transferred through the machine’s power conversion circuitry.
The board is equipped with four 40T120 power IGBTs that perform the high-speed switching required by the inverter system. These switching devices work together with the surrounding resistors, capacitors, diodes, and power connection points to handle the electrical energy used by the welding machine. The PCB carries the model marking PCM-39-B2, which helps technicians compare the replacement board with the original board installed inside the machine.
Features:
- Designed for compatible ZX7 inverter welding machines.
- PCM-39-B2 PCB model.
- Equipped with four 40T120 power IGBTs.
- High-frequency inverter power switching design.
- Integrated power resistors, capacitors, and diodes.
- Heavy-duty power connection terminals.
- Suitable as a replacement inverter power board.
- Designed for welding machine repair and maintenance.
- PCB reference markings for easier servicing.
- Compact integrated power-stage construction.
Specifications:
| Parameter | Value |
|---|---|
| Product Type: | IGBT Inverter Power Circuit Board |
| PCB Model: | PCM-39-B2 |
| Compatible Welding Machine Models: | ZX7-250GS / ZX7-250G / ZX7-315GS |
| Power Switching Device: | 40T120 IGBT |
| Number of IGBTs: | 4 |
| Switching Technology: | IGBT High-Frequency Inverter |
| IGBT Reference Positions: | Q1, Q2, Q3, Q4 |
| Power Resistors: | 22Ω, 5W |
| Gate/Drive Resistors: | 10Ω, 1/4W |
| High-Voltage Capacitors: | 472 (4.7nF), 3kV |
| PCB Function: | Inverter Power Switching Stage |
| Connection Type: | PCB Connectors and High-Current Screw Terminals |
| Installation Type: | Internal Welding Machine Replacement Board |
| Board Marking: | PCM-39-B2 |
| Condition of IGBTs: | Pre-installed on Board |
Applications:
- Inverter Welding Machine Repair.
- ZX7-250GS Welding Machine Maintenance.
- ZX7-250G Welding Machine Maintenance.
- ZX7-315GS Welding Machine Maintenance.
- IGBT Power Stage Replacement.
- Welding Equipment Servicing.
Package Contents:
- 1× PCM-39-B2 IGBT Inverter Power Board
- 4× 40T120 IGBT Power Transistors – Pre-installed on the Board