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1.5SMC250CA from VISHAY

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1.5SMC250CA

Manufacturer: VISHAY, ON

Surface Mount TRANSZORB?Transient Voltage Suppressors, Peak Pulse Power 1500W

Partnumber Manufacturer Quantity Availability
1.5SMC250CA,15SMC250CA VISHAY, ON 153000 In Stock

Description and Introduction

Surface Mount TRANSZORB?Transient Voltage Suppressors, Peak Pulse Power 1500W The part 15SMC250CA is a Transient Voltage Suppressor (TVS) diode manufactured by ON Semiconductor. It is designed to protect sensitive electronics from voltage transients and electrostatic discharge (ESD). Key specifications include:

- **Voltage - Reverse Standoff (Typ):** 213V
- **Voltage - Breakdown (Min):** 237V
- **Voltage - Clamping (Max) @ Ipp:** 385V
- **Current - Peak Pulse (10/1000µs):** 35.4A
- **Power - Peak Pulse:** 250W
- **Operating Temperature:** -55°C to +150°C
- **Package / Case:** DO-214AB, SMC
- **Mounting Type:** Surface Mount
- **RoHS Status:** RoHS Compliant

This TVS diode is commonly used in applications requiring robust overvoltage protection, such as in telecommunications, industrial equipment, and automotive systems.

Application Scenarios & Design Considerations

Surface Mount TRANSZORB?Transient Voltage Suppressors, Peak Pulse Power 1500W# 15SMC250CA Transient Voltage Suppressor (TVS) Diode Technical Documentation

 Manufacturer : ON Semiconductor

## 1. Application Scenarios

### Typical Use Cases
The 15SMC250CA is a 15kW surface mount TVS diode designed for robust transient voltage protection in demanding applications. Typical use cases include:

-  Industrial Equipment Protection : Safeguarding PLCs, motor drives, and control systems from voltage transients
-  Telecommunications Infrastructure : Protecting base stations, switching equipment, and network interfaces from lightning-induced surges
-  Power Supply Units : Providing secondary protection in AC/DC and DC/DC power converters
-  Automotive Electronics : Guarding against load dump and other high-energy transients in vehicle systems
-  Renewable Energy Systems : Protecting solar inverters and wind turbine control electronics

### Industry Applications
-  Industrial Automation : Machine control systems, robotic controllers, and sensor interfaces
-  Telecommunications : DSL modems, routers, and network interface cards
-  Automotive : ECU protection, battery management systems, and charging infrastructure
-  Energy Sector : Smart meters, grid monitoring equipment, and power distribution systems
-  Consumer Electronics : High-end audio/video equipment and gaming consoles

### Practical Advantages and Limitations

 Advantages: 
-  High Surge Capability : 15kW peak pulse power (10/1000μs waveform)
-  Fast Response Time : Typically <1.0 ps response to transient events
-  Low Clamping Ratio : Provides effective voltage limiting during surge events
-  Surface Mount Package : SMC (DO-214AB) package enables automated assembly
-  Wide Operating Range : -55°C to +150°C junction temperature range

 Limitations: 
-  Physical Size : SMC package requires adequate PCB space (7.1mm × 6.2mm)
-  Thermal Management : High-power dissipation requires proper thermal design
-  Voltage Margin : Requires careful selection to avoid interference with normal operation
-  Cost Consideration : Higher cost compared to lower-power TVS devices

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Incorrect Standoff Voltage Selection 
-  Problem : Selecting VRWM too close to normal operating voltage
-  Solution : Ensure VRWM is at least 15-20% above maximum operating voltage

 Pitfall 2: Inadequate Thermal Management 
-  Problem : Overheating during repeated surge events
-  Solution : Implement proper thermal vias and consider heatsinking for high-surge environments

 Pitfall 3: Poor Placement 
-  Problem : TVS located too far from protected circuit
-  Solution : Place TVS as close as possible to the protected interface or connector

### Compatibility Issues with Other Components

 Power Supply Compatibility: 
- Ensure TVS VBR minimum exceeds power supply maximum output voltage
- Coordinate with input filters to avoid interaction with normal operation

 Signal Line Considerations: 
- Account for TVS capacitance (typically 1500-2500pF) in high-speed circuits
- Use lower-capacitance TVS devices for high-frequency signal lines (>10MHz)

 Protection Coordination: 
- Coordinate with primary protection devices (GDTs, MOVs) in multi-stage protection schemes
- Ensure proper sequencing with fuses and circuit breakers

### PCB Layout Recommendations

 Placement Strategy: 
- Position immediately adjacent to protected connectors or interfaces
- Minimize trace length between TVS and protected circuit (<25mm recommended)

 Routing Guidelines: 
- Use wide traces (≥1.5mm) for high-current surge paths
- Avoid vias in the primary surge current path when possible
- Maintain adequate clearance (≥2.5mm) between high-voltage nodes

 Ther

Alternative Part Number

  • SMCJ250CA --: Same SMC (DO-214AB) package, 250V bidirectional standoff, 1500W peak pulse power; direct functional equivalent from a different series.
  • P6SMB250CA --: Bidirectional 250V TVS in SMB package with 600W rating; lower power but usable in space-constrained designs needing similar clamping.
  • 5.0SMDJ250CA --: Higher 5000W surge rating in SMC package, 250V bidirectional; provides extra margin where the 1500W part is marginal.
  • SMCJ250CA --: Same SMC (DO-214AB) package, 250V bidirectional standoff, 1500W peak pulse power; direct functional equivalent from a different series.
  • P6SMB250CA --: Bidirectional 250V TVS in SMB package with 600W rating; lower power but usable in many clamping applications where 1500W is not strictly required.
  • SMAJ250CA --: Bidirectional 250V TVS diode in SMA package, 400W; smaller power rating but same working voltage and bidirectional protection function.

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