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SM4T22CA from ST,ST Microelectronics

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SM4T22CA

Manufacturer: ST

TRANSIL

Partnumber Manufacturer Quantity Availability
SM4T22CA ST 56700 In Stock

Description and Introduction

TRANSIL The SM4T22CA is a Transil™ bidirectional TVS (Transient Voltage Suppressor) diode manufactured by STMicroelectronics.  

### **Specifications:**  
- **Type:** Bidirectional TVS Diode  
- **Peak Pulse Power (PPP):** 400W (8/20μs)  
- **Breakdown Voltage (VBR):** 24.4V (min) to 27V (max)  
- **Clamping Voltage (VC):** 38.9V (max) at 1A  
- **Standoff Voltage (VRWM):** 22V  
- **Leakage Current (IR):** 1μA (max) at VRWM  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AC (SMA)  

### **Descriptions and Features:**  
- Designed to protect sensitive electronics from high-voltage transients.  
- Bidirectional configuration for clamping both positive and negative voltage spikes.  
- Low clamping voltage for effective protection.  
- Fast response time to transient events.  
- RoHS compliant and halogen-free.  

This diode is commonly used in applications such as power supplies, communication systems, and automotive electronics for ESD and surge protection.

Application Scenarios & Design Considerations

TRANSIL

Alternative Part Number

  • SMAJ22CA --: Same SMA package bidirectional TVS diode with 22V standoff voltage and similar clamping performance, widely available and pin-compatible.
  • P6SMB22CA --: Bidirectional 22V TVS in SMB package offering comparable surge rating and clamping voltage, suitable drop-in replacement with slightly larger footprint.
  • 1SMB22CA --: Bidirectional 22V TVS diode in SMB package with similar peak pulse power and clamping characteristics, good alternative when SMAJ is unavailable.

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