1500 Watt peak power transient voltage suppressor. Reverse stand-off voltage VRWM = 171.00 V. Test current IT = 1 mA.# 15KE200CA TVS Diode Technical Documentation
## 1. Application Scenarios (45%)
### Typical Use Cases
The 15KE200CA is a bidirectional Transient Voltage Suppression (TVS) diode designed for robust overvoltage protection in electronic circuits. Typical applications include:
Primary Protection Applications:
- ESD Protection : Safeguards sensitive ICs from electrostatic discharge events up to 30kV
- Lightning Surge Protection : Provides secondary protection against induced lightning surges in communication lines
- Inductive Load Switching : Protects against voltage spikes from relay coils, motor windings, and solenoid valves
- Power Supply Transients : Suppresses voltage transients in DC power lines and switching power supplies
### Industry Applications
Telecommunications:
- DSL modems and routers
- Telephone line interface protection
- Network equipment I/O ports
- Base station equipment
Automotive Electronics:
- CAN bus protection
- ECU input/output protection
- Sensor interface circuits
- Infotainment systems
Industrial Control Systems:
- PLC I/O modules
- Motor drive circuits
- Process control instrumentation
- Data acquisition systems
Consumer Electronics:
- USB port protection
- HDMI interface protection
- Power supply input protection
- Audio/video equipment
### Practical Advantages and Limitations
Advantages:
- Fast Response Time : Reacts to transients in picosecond range (typically <1.0ns)
- High Surge Capability : Handles peak pulse power of 15000W (10/1000μs waveform)
- Bidirectional Operation : Protects against both positive and negative voltage transients
- Low Clamping Voltage : Typical Vc of 324V at 100A provides effective protection
- Compact Package : DO-201 package enables space-efficient PCB design
Limitations:
- Standby Power Consumption : Minimal leakage current (5μA maximum) at working voltage
- Voltage Rating : Fixed 200V working voltage limits flexibility
- Energy Handling : Limited by single-pulse rating; not suitable for continuous overvoltage conditions
- Temperature Sensitivity : Performance derates with increasing ambient temperature
## 2. Design Considerations (35%)
### Common Design Pitfalls and Solutions
Pitfall 1: Incorrect Voltage Rating Selection
- Problem : Selecting TVS with VWM too close to normal operating voltage
- Solution : Ensure VWM (200V) exceeds maximum normal operating voltage by 10-15%
Pitfall 2: Inadequate Current Handling
- Problem : Underestimating surge current requirements
- Solution : Calculate expected surge current and verify 15KE200CA's 100A peak pulse current rating suffices
Pitfall 3: Poor Thermal Management
- Problem : Overheating during repeated transient events
- Solution : Provide adequate copper area for heat dissipation and consider derating for high-temperature environments
Pitfall 4: Slow System Response
- Problem : TVS placement too far from protected component
- Solution : Place 15KE200CA as close as possible to protected interface or connector
### Compatibility Issues with Other Components
With Microcontrollers and ICs:
- Ensure clamping voltage (324V) doesn't exceed protected IC's absolute maximum ratings
- Coordinate with series resistors for current limiting
With Fuses and Circuit Breakers:
- TVS should react faster than protective fuses
- Consider fuse blow characteristics to prevent nuisance tripping
With Filter Components:
- Place TVS before LC filters to protect filter components
- Coordinate with common-mode chokes for EMI suppression
With Other Protection Devices:
- Can be used in coordinated protection schemes with GDTs or MOVs
- Ensure proper sequencing of protection device activation
