Voltage 50V ~ 1000V 25.0 Amp Glass Passivited Bridge Rectifiers # GBJ2510 Bridge Rectifier Technical Documentation
## 1. Application Scenarios
### Typical Use Cases
The GBJ2510 is a 25A, 1000V single-phase bridge rectifier commonly employed in:
Power Supply Units
- AC-to-DC conversion in switching power supplies
- Input rectification stages for industrial power systems
- Battery charger circuits requiring high-current rectification
Motor Control Systems
- DC motor drive circuits
- Servo motor power stages
- Industrial automation equipment power conversion
Welding Equipment
- Primary rectification in arc welding power sources
- Resistance welding machine power supplies
### Industry Applications
- Industrial Automation : Machine tool power supplies, PLC power modules
- Renewable Energy : Solar inverter input stages, wind turbine control systems
- Transportation : Electric vehicle charging systems, railway power electronics
- Consumer Electronics : High-power audio amplifiers, large display power supplies
### Practical Advantages
- High Current Capacity : 25A continuous forward current rating
- Voltage Robustness : 1000V peak repetitive reverse voltage
- Thermal Performance : Low thermal resistance junction-to-case (typically 1.5°C/W)
- Compact Design : GBJ package saves PCB space compared to discrete diodes
### Limitations
- Heat Dissipation : Requires adequate heatsinking at full load current
- Frequency Limitations : Not suitable for high-frequency switching applications (>20kHz)
- Voltage Drop : Typical 1.1V forward voltage per diode leg affects efficiency in low-voltage applications
## 2. Design Considerations
### Common Design Pitfalls and Solutions
Thermal Management Issues
- Pitfall : Inadequate heatsinking leading to thermal runaway
- Solution : Calculate thermal requirements using:
```
Tj = Ta + (P × Rθj-a)
Where P = Vf × If × 2 (for bridge configuration)
```
- Implementation : Use thermal interface material and proper mounting torque
Voltage Spikes
- Pitfall : Unsuppressed voltage transients exceeding 1000V rating
- Solution : Implement snubber circuits and TVS diodes
- Implementation : Place 0.1µF ceramic capacitors across AC inputs
Current Surge Protection
- Pitfall : Inrush currents during startup
- Solution : Add negative temperature coefficient (NTC) thermistors
- Implementation : Series NTC with typical 5-10Ω cold resistance
### Compatibility Issues
With Filter Capacitors
- High ripple current compatibility required with electrolytic capacitors
- Ensure capacitor RMS current rating exceeds calculated ripple current
With Transformers
- Consider transformer secondary voltage derating due to diode voltage drop
- Account for 2.2V total forward voltage in voltage calculations
Control Circuits
- Compatible with standard gate drivers and microcontroller interfaces
- No special drive requirements for passive rectification
### PCB Layout Recommendations
Power Routing
- Use wide copper traces (minimum 100 mil width for 25A current)
- Implement power planes where possible
- Maintain minimum 60 mil clearance for 1000V isolation
Thermal Management
- Dedicate large copper area for heatsinking
- Use multiple vias for heat transfer to inner layers
- Consider thermal relief patterns for soldering
EMI Considerations
- Place decoupling capacitors close to AC terminals
- Implement ground planes for noise reduction
- Route AC and DC lines separately to minimize coupling
Component Placement
```
AC Input → Fuse → GBJ2510 → Filter Caps → Load
```
- Keep AC input filtering close to bridge rectifier
- Position heatsink with adequate airflow
## 3. Technical Specifications
### Key Parameter Explanations
Absolute Maximum Ratings
- Vrrm : 1000V (
