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1.5KE36A from GS

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1.5KE36A

Manufacturer: GS, MOTOROLA

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
1.5KE36A,15KE36A GS, MOTOROLA 1594 In Stock

Description and Introduction

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS The part number **15KE36A** is a **Transient Voltage Suppressor (TVS) Diode** manufactured by **Motorola**. Below are the factual specifications from Ic-phoenix technical data files:

1. **Type**: Bidirectional TVS Diode (Transient Voltage Suppressor).
2. **Voltage - Reverse Standoff (Vr)**: 30.8V.
3. **Voltage - Breakdown (Vbr)**: 34.2V (min) to 37.8V (max).
4. **Voltage - Clamping (Vc)**: 49.9V at 23.2A.
5. **Peak Pulse Current (Ipp)**: 23.2A (8/20µs waveform).
6. **Power - Peak Pulse (Pppm)**: 1500W.
7. **Operating Temperature Range**: -55°C to +175°C.
8. **Package**: DO-201AA (DO-15).
9. **Mounting Type**: Through Hole.
10. **Applications**: Designed for surge protection in electronic circuits, particularly for protecting sensitive components from voltage transients and spikes.

These specifications are based on Motorola's datasheet for the 15KE36A TVS diode.

Application Scenarios & Design Considerations

1500 WATT PEAK POWER TRANSIENT VOLTAGE SUPPRESSORS# 15KE36A TVS Diode Technical Documentation

## 1. Application Scenarios

### Typical Use Cases
The 15KE36A is a unidirectional transient voltage suppression (TVS) diode designed for robust overvoltage protection in electronic circuits. Its primary applications include:

 ESD Protection : Provides effective electrostatic discharge (ESD) protection for sensitive ICs, particularly in interface circuits exposed to human contact or external connections. The device responds to ESD strikes within nanoseconds, clamping voltages to safe levels.

 Inductive Load Switching : Protects circuits from voltage spikes generated by inductive loads such as relays, motors, and solenoids. When these loads are switched off, the collapsing magnetic field generates high-voltage transients that the 15KE36A effectively suppresses.

 Lightning/Surge Protection : Used in telecommunication equipment, power lines, and data lines to protect against lightning-induced surges and other high-energy transients.

### Industry Applications
-  Automotive Electronics : Protects CAN bus, LIN bus, and other automotive communication networks from load dump and other automotive transients
-  Industrial Control Systems : Guards PLC I/O modules, sensor interfaces, and motor control circuits in harsh industrial environments
-  Telecommunications : Provides surge protection for DSL modems, routers, and base station equipment
-  Consumer Electronics : Protects USB ports, HDMI interfaces, and other external connectors from ESD events
-  Power Supplies : Used in switch-mode power supplies to protect against voltage spikes and ringing

### Practical Advantages and Limitations

 Advantages: 
-  Fast Response Time : Reacts to transients in picoseconds, significantly faster than MOVs or gas discharge tubes
-  High Peak Pulse Power : Capable of handling 1500W peak pulse power (10/1000μs waveform)
-  Low Clamping Voltage : Typical clamping voltage of 49.2V at 27.1A, providing excellent protection for downstream components
-  Repeatable Performance : Maintains consistent clamping characteristics over multiple transient events
-  Compact Package : DO-201 package offers good power handling in a relatively small footprint

 Limitations: 
-  Energy Handling : Limited compared to MOVs for very high-energy transients; may require additional protection devices for extreme conditions
-  Voltage Derating : Operating voltage must be derated at elevated temperatures
-  Leakage Current : Exhibits small leakage current (5μA maximum) at working voltage
-  Unidirectional Nature : Only protects against positive voltage transients; bidirectional protection requires additional components

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Incorrect Standoff Voltage Selection 
-  Problem : Selecting a TVS with standoff voltage too close to normal operating voltage can cause unnecessary triggering or excessive leakage
-  Solution : Ensure 15KE36A's 30.8V standoff voltage exceeds maximum normal operating voltage by 10-20%

 Pitfall 2: Inadequate Current Handling 
-  Problem : Underestimating the peak current during transient events
-  Solution : Verify that expected surge currents don't exceed the 15KE36A's 27.1A peak pulse current rating

 Pitfall 3: Poor Thermal Management 
-  Problem : Repeated transient events can cause thermal buildup in high-frequency surge environments
-  Solution : Provide adequate copper area around the device and consider heat sinking for applications with frequent transients

### Compatibility Issues with Other Components

 Microcontrollers and Digital ICs 
- The 15KE36A's clamping voltage (49.2V) is well above typical IC operating voltages (3.3V-5V)
-  Solution : Use series resistors or additional lower-voltage TVS devices for direct IC protection

 Power Supply Integration 
- May interact with power supply feedback loops if placed incorrectly

Alternative Part Number

  • P6KE36A --: Same 36V standoff unidirectional TVS diode in a smaller DO-15 package; widely available and electrically compatible for lower-power surge protection.
  • SMAJ36A --: 36V standoff unidirectional TVS in SMA surface-mount package; suitable drop-in alternative when board space or SMD assembly is preferred.
  • SMBJ36A --: 36V standoff unidirectional TVS in SMB package with comparable clamping performance; good alternative when a slightly larger SMD package is acceptable.
  • P6KE36A --: Same 36V standoff unidirectional TVS in a smaller DO-15 package; widely available and a common drop-in for lower surge ratings.
  • SMAJ36A --: 36V unidirectional TVS diode in SMA surface-mount package; suitable when board space is limited and peak pulse power requirements are moderate.
  • SMBJ36A --: 36V unidirectional TVS in SMB package with 600W peak pulse power; good functional match for general transient protection.
  • P6KE36A --: Same 36V standoff unidirectional TVS in a smaller DO-15 package; widely available and a common drop-in for lower-power surge requirements.
  • SMAJ36A --: 36V standoff unidirectional TVS in SMA surface-mount package; suitable when board space is limited and peak pulse power needs are moderate.
  • SMBJ36A --: 36V standoff unidirectional TVS in SMB package with 600W peak pulse rating; good alternative when a surface-mount device with higher surge capability than SMAJ is needed.

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