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SMDJ78A from CCD

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SMDJ78A

Manufacturer: CCD, LITTELFUSE

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR VOLTAGE-5.0 TO 170 Volts 3000 Watt Peak Pulse Power

Partnumber Manufacturer Quantity Availability
SMDJ78A CCD, LITTELFUSE 131000 In Stock

Description and Introduction

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR VOLTAGE-5.0 TO 170 Volts 3000 Watt Peak Pulse Power The SMDJ78A is a transient voltage suppressor (TVS) diode manufactured by CCD (Comchip Technology). Here are the factual details about its specifications, descriptions, and features:

### **Specifications:**
- **Peak Pulse Power (PPP):** 1500W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 86.5V to 95.7V (at 1mA)  
- **Clamping Voltage (VC):** 125V (at 16.7A)  
- **Standoff Voltage (VRWM):** 78V  
- **Reverse Leakage Current (IR):** 1μA (max) at VRWM  
- **Junction Capacitance (CJ):** 200pF (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions:**
- The SMDJ78A is a surface-mount bidirectional TVS diode designed to protect sensitive electronics from voltage transients, including ESD, lightning, and inductive switching.  
- It is compliant with RoHS standards and halogen-free.  
- The device is housed in a DO-214AB (SMC) package.  

### **Features:**
- **Bidirectional TVS Diode** – Protects against both positive and negative transient voltages.  
- **Low Clamping Voltage** – Ensures effective protection for sensitive circuits.  
- **High Surge Capability** – Withstands large transient currents.  
- **Fast Response Time** – Reacts quickly to transient events (typically <1ns).  
- **Surface-Mount Design** – Suitable for automated PCB assembly.  

For exact application details, refer to the official datasheet from CCD (Comchip Technology).

Application Scenarios & Design Considerations

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR VOLTAGE-5.0 TO 170 Volts 3000 Watt Peak Pulse Power

Alternative Part Number

  • 1.5SMC78A --: Same 78V standoff unidirectional TVS in the SMC (DO-214AB) package with comparable 1500W peak pulse rating, widely available and pin-compatible.
  • SMCJ78A --: 1500W unidirectional TVS diode with 78V reverse standoff in SMC package, a common drop-in replacement for SMDJ series parts.
  • 5.0SMDJ78A --: Higher 5000W surge-rated unidirectional TVS with 78V standoff in SMC package, offering extra margin while keeping the same footprint.

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