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SMDJ70A from LITTELFUSE

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SMDJ70A

Manufacturer: LITTELFUSE, CCD

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

Partnumber Manufacturer Quantity Availability
SMDJ70A LITTELFUSE, CCD 131000 In Stock

Description and Introduction

SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR VOLTAGE-5.0 TO 170 Volts 3000 Watt Peak Pulse Power The SMDJ70A is a Transient Voltage Suppressor (TVS) diode manufactured by LITTELFUSE. Below are its specifications, descriptions, and features:

### **Specifications:**
- **Voltage - Reverse Standoff (V_RWM):** 70V  
- **Voltage - Breakdown (V_BR):** 77.8V (Min)  
- **Voltage - Clamping (V_CL):** 113V at 10A  
- **Peak Pulse Current (I_PP):** 10A (8/20µs)  
- **Power - Peak Pulse (P_PP):** 1500W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AB (SMC)  

### **Descriptions:**
- The SMDJ70A is designed to protect sensitive electronics from high-voltage transients.  
- It provides bi-directional protection (for both positive and negative voltage transients).  
- Suitable for applications requiring high power dissipation in a compact surface-mount package.  

### **Features:**
- **Low Clamping Voltage:** Ensures effective protection for sensitive components.  
- **High Surge Capability:** Can handle large transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Fast Response Time:** Reacts quickly to transient events (typically in picoseconds).  

This device is commonly used in telecommunications, industrial, and automotive applications for ESD and surge protection.  

(Source: LITTELFUSE datasheet for SMDJ70A.)

Application Scenarios & Design Considerations

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

Alternative Part Number

  • 1.5SMC75A --: Same SMC (DO-214AB) package and unidirectional TVS function with a comparable standoff voltage; widely available and a common drop-in for SMDJ70A in surge protection designs.
  • SMCJ70A --: Directly comparable 70V standoff unidirectional TVS in the same SMC package with similar clamping and peak pulse ratings, offered by a major alternative supplier.
  • P6SMB75A --: Unidirectional TVS with similar standoff voltage in a smaller SMB package; suitable when board space is tight and slightly lower surge capability is acceptable.
  • 5.0SMDJ70A --: 5000W SMC TVS with the same 70V standoff and unidirectional configuration, offering higher surge capability as a robust drop-in replacement.

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