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SMDJ43CA from CCD

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SMDJ43CA

Manufacturer: CCD, LITTELFUSE

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

Partnumber Manufacturer Quantity Availability
SMDJ43CA CCD, LITTELFUSE 131000 In Stock

Description and Introduction

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR The SMDJ43CA is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by LITTELFUSE. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Voltage - Reverse Standoff (V_RWM):** 38.5V  
- **Voltage - Breakdown (Min) (V_BR):** 42.8V  
- **Voltage - Clamping (Max) @ I_PP (V_C):** 69.4V @ 38.6A  
- **Current - Peak Pulse (10/1000µs) (I_PP):** 38.6A  
- **Power - Peak Pulse (10/1000µs):** 3000W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package / Case:** DO-214AB (SMC)  
- **Mounting Type:** Surface Mount  

### **Description:**
The SMDJ43CA is designed to protect sensitive electronics from high-voltage transients, including ESD, lightning, and inductive switching surges. It offers bidirectional protection, meaning it clamps both positive and negative voltage spikes.

### **Features:**
- **Bidirectional TVS Diode** – Protects against both positive and negative transients.  
- **High Surge Capability** – Handles peak pulse currents up to 38.6A.  
- **Low Clamping Voltage** – Limits voltage spikes to safe levels (69.4V max).  
- **Fast Response Time** – Reacts quickly to transient events (picosecond range).  
- **RoHS Compliant** – Meets environmental standards.  

This device is commonly used in power supplies, communication systems, and industrial electronics for surge protection.  

(Source: LITTELFUSE datasheet for SMDJ43CA)

Application Scenarios & Design Considerations

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

Alternative Part Number

  • SMCJ43CA --: Same 1500W bidirectional TVS class in SMC package with 43V standoff, widely available and electrically close to the original.
  • 1.5SMC43CA --: 1500W bidirectional transient voltage suppressor with 43V standoff in SMC outline, a common cross for SMDJ43CA.
  • TPSMD43CA --: 1500W bidirectional TVS diode with matching 43V standoff and SMC package, suitable as a functional replacement.
  • 1SMB43CAT3G --: Bidirectional 43V TVS diode in SMB package with similar 400W-class surge rating, widely available and pin-compatible for SMDJ43CA replacement.
  • SMAJ43CA --: Same manufacturer bidirectional 43V TVS in SMA package; lower power rating but same clamping concept and easy drop-in for lower-surge designs.
  • P6SMB43CAT3G --: Bidirectional 43V TVS in SMB package with 600W peak pulse power, offering comparable or higher surge capability than the original.

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