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1.5KE250A from GI

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1.5KE250A

Manufacturer: GI, F, VISHAY

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
1.5KE250A,15KE250A GI, F, VISHAY 4750 In Stock

Description and Introduction

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS The part 15KE250A is a Transient Voltage Suppressor (TVS) diode manufactured by General Instrument (GI). It is designed to protect sensitive electronic components from voltage transients and surges. The key specifications for the 15KE250A include:

- **Peak Pulse Power Dissipation (Pppm):** 1500W (for a 10/1000μs waveform)
- **Standoff Voltage (Vwm):** 213V
- **Breakdown Voltage (Vbr):** 237V (minimum) to 263V (maximum)
- **Clamping Voltage (Vc):** 343V (at 100A)
- **Maximum Reverse Leakage Current (Ir):** 5μA (at Vwm)
- **Operating Temperature Range:** -55°C to +175°C
- **Package Type:** DO-201AD (Axial Lead)

This TVS diode is commonly used in applications such as power supplies, communication systems, and industrial equipment to protect against transient voltage events like lightning strikes, inductive load switching, and electrostatic discharge (ESD).

Application Scenarios & Design Considerations

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS# Technical Documentation: 15KE250A TVS Diode

 Manufacturer : GI (General Instrument)

## 1. Application Scenarios

### Typical Use Cases
The 15KE250A is a bidirectional transient voltage suppression (TVS) diode designed for robust overvoltage protection in electronic circuits. Typical applications include:

-  Power Supply Protection : Safeguarding DC power lines from voltage transients and surges
-  Communication Interfaces : Protecting RS-232, RS-485, and Ethernet ports from ESD events
-  Automotive Electronics : Load dump protection and switching transient suppression in 12V/24V automotive systems
-  Industrial Control Systems : Shielding sensitive control circuitry from inductive load switching spikes
-  Telecommunications Equipment : Lightning surge protection for outdoor and indoor communication devices

### Industry Applications
-  Automotive : ECU protection, infotainment systems, lighting control modules
-  Telecommunications : Base station equipment, network switches, modems
-  Industrial Automation : PLCs, motor drives, sensor interfaces
-  Consumer Electronics : Power adapters, charging ports, audio/video equipment
-  Renewable Energy : Solar inverters, wind turbine control systems

### Practical Advantages and Limitations

 Advantages: 
-  High Surge Capability : Withstands 1500W peak pulse power (10/1000μs waveform)
-  Fast Response Time : Typically <1.0 picosecond reaction to transient events
-  Bidirectional Operation : Protects against both positive and negative voltage transients
-  Low Clamping Ratio : Provides effective voltage limiting during surge events
-  Robust Construction : Hermetically sealed glass package ensures reliability in harsh environments

 Limitations: 
-  Limited Energy Absorption : Not suitable for sustained overvoltage conditions
-  Parasitic Capacitance : ~150pF typical may affect high-frequency signal integrity
-  Voltage Derating : Requires careful consideration at elevated temperatures
-  Physical Size : DO-201 package may be bulky for space-constrained applications

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Incorrect Voltage Rating Selection 
-  Problem : Choosing a device with standoff voltage too close to normal operating voltage
-  Solution : Select TVS with working standoff voltage at least 15-20% above maximum normal operating voltage

 Pitfall 2: Poor Thermal Management 
-  Problem : Inadequate heat dissipation during repeated surge events
-  Solution : Ensure sufficient copper area around mounting pads and consider thermal vias

 Pitfall 3: Excessive Lead Length 
-  Problem : Long PCB traces increase parasitic inductance, reducing protection effectiveness
-  Solution : Minimize trace length between protected line and TVS diode

### Compatibility Issues with Other Components

 Positive Compatibility: 
- Works well with ferrite beads for enhanced EMI filtering
- Compatible with polymer-based overcurrent protection devices
- Effective when used in conjunction with gas discharge tubes for multi-stage protection

 Potential Conflicts: 
- May interact with active voltage clamping circuits
- Parasitic capacitance can affect high-speed digital signals (>100MHz)
- Requires coordination with fuse characteristics for proper coordination

### PCB Layout Recommendations

 Placement Strategy: 
- Position the 15KE250A as close as possible to the protected port or connector
- Use direct, short, and wide traces to minimize parasitic inductance
- Maintain minimum 0.5mm clearance from other components

 Routing Guidelines: 
- Trace width: Minimum 40 mil for power applications
- Ground connection: Use dedicated ground plane with multiple vias
- Signal lines: Keep protected traces away from noise sources

 Thermal Management: 
- Provide adequate copper pour around device pads (minimum 200mm² total)
- Consider thermal relief patterns for manufacturability
- For

Alternative Part Number

  • P6KE250A --: Same 250V standoff unidirectional TVS in a smaller DO-15 package; widely available and electrically compatible for lower surge ratings.
  • SMCJ250A --: 250V standoff unidirectional TVS diode in SMC package with comparable clamping voltage; good surface-mount alternative.
  • BZW06-250A --: 250V unidirectional transient voltage suppressor with similar breakdown and clamping characteristics, suitable drop-in replacement in many designs.
  • P6KE250A --: Same 250V standoff unidirectional TVS in a smaller DO-15 package; suitable when lower peak power (600W vs 1500W) is acceptable.
  • SMCJ250A --: 250V standoff unidirectional TVS diode in SMC surface-mount package, 1500W peak pulse power, direct functional equivalent for SMD designs.
  • 5KP250A --: 250V standoff unidirectional TVS with 5000W peak pulse power in P600 axial package, offering higher surge capability as a robust substitute.
  • P6KE250A --: Same 250V standoff unidirectional TVS in a smaller DO-15 package; suitable when lower peak pulse power is acceptable.
  • SMCJ250A --: 250V standoff unidirectional TVS in SMC surface-mount package, good drop-in for space-constrained designs with comparable clamping.
  • 5KP250A --: Higher-power 250V unidirectional TVS in P600 axial package, offering extra surge margin as a robust replacement.

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