P4KE18A is a high-reliability 400W transient voltage suppressor (TVS) diode in a DO-41 axial lead package, designed to protect sensitive electronic circuits from damaging voltage transients such as ESD (electrostatic discharge), lightning surges, inductive switching spikes, and power line overvoltage events. It provides fast and effective clamping of transient overvoltages, safely redirecting surge current away from critical components to ensure stable circuit operation and long-term reliability.
This device features a glass-passivated junction design, delivering excellent electrical stability, low leakage current, and consistent breakdown characteristics even under repetitive surge conditions. Its fast response time allows near-instant protection, effectively safeguarding ICs, microcontrollers, communication lines, and power management circuits from transient damage.
With a 400W peak pulse power rating (10/1000 μs waveform), the P4KE18A offers strong surge absorption capability, making it suitable for industrial, automotive, and harsh environment applications where reliable overvoltage protection is critical. The uni-directional configuration ensures efficient DC line protection and improves overall system safety.
The DO-41 package provides robust mechanical strength, easy PCB installation, and reliable thermal performance, making it ideal for both compact and heavy-duty electronic designs.
Key Features
- 400W peak pulse power dissipation (10/1000 μs)
- Fast response time for transient voltage suppression
- Glass-passivated junction for high reliability
- Low leakage current for energy-efficient operation
- Uni-directional TVS diode structure
- DO-41 axial lead package for easy mounting
- Strong ESD, surge, and lightning protection capability
Applications
- Power supply surge protection circuits
- Consumer electronics protection
- Telecom and communication equipment
- Industrial automation systems
- Automotive electronic modules
- General-purpose transient voltage suppression applications
