Overview
The SMBJ28CA-TR, produced by STMicroelectronics, is a Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients and electrostatic discharges. This device is part of the SMBJ series, which is known for its high reliability and stability in various applications. The SMBJ28CA-TR is specifically engineered to handle surges below 600 W (10/1000 μs) and is suitable for high-end equipment and Switch-Mode Power Supplies (SMPS) due to its low leakage current and high junction temperature capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (10/1000 μs) | 600 | W |
| Peak Pulse Power (8/20 μs) | 4 kW | |
| Stand-off Voltage (VRM) | 28 | V |
| Maximum Clamping Voltage (VC) | 59 | V |
| Directionality | Bidirectional | |
| Reverse Leakage Current (IR) at 25°C | 0.2 μA | |
| Reverse Leakage Current (IR) at 85°C | 1 μA | |
| Operating Junction Temperature (TJ) | -55 to 150 | °C |
| Storage Temperature Range (TSTG) | -65 to 175 | °C |
| Package Type | SMB | |
| Lead Finishing | Matte Tin Plating | |
| RoHS Compliance | Ecopack2 |
Key Features
- Excellent clamping capability to protect against voltage transients and electrostatic discharges (ESD) according to IEC 61000-4-2 and MIL STD 883, method 3015.
- Low incremental surge resistance and low leakage current (0.2 μA at 25°C and 1 μA at 85°C).
- Bidirectional and unidirectional types available, with the SMBJ28CA-TR being bidirectional.
- High power capability with a peak pulse power of 600 W (10/1000 μs) and up to 350 W at Tjmax.
- Operating junction temperature up to 150°C, ensuring reliability and stability in high-temperature environments.
- Compliant with RoHS and halogen-free, with matte tin lead-free plating.
- Fast response time, typically less than 1.0 ps from 0V to VBR min.
- UL Recognized compound meeting flammability classification V-0 and MSL level 1 per J-STD-020.
Applications
The SMBJ28CA-TR TVS diode is ideal for protecting I/O interfaces, VCC bus, and other vulnerable circuits in various electronic applications. These include:
- Telecommunications equipment
- Computer systems
- Industrial electronics
- Consumer electronics
It is particularly useful in scenarios where protection against lightning-induced surges, ESD, and electrical overstress is critical.
Q & A
- What is the peak pulse power capability of the SMBJ28CA-TR?
The SMBJ28CA-TR has a peak pulse power capability of 600 W (10/1000 μs) and 4 kW (8/20 μs).
- What is the stand-off voltage (VRM) of the SMBJ28CA-TR?
The stand-off voltage (VRM) of the SMBJ28CA-TR is 28 V.
- What is the maximum clamping voltage (VC) of the SMBJ28CA-TR?
The maximum clamping voltage (VC) of the SMBJ28CA-TR is 59 V.
- Is the SMBJ28CA-TR bidirectional or unidirectional?
The SMBJ28CA-TR is a bidirectional TVS diode.
- What is the operating junction temperature range of the SMBJ28CA-TR?
The operating junction temperature range of the SMBJ28CA-TR is -55°C to 150°C).
- Is the SMBJ28CA-TR RoHS compliant?
Yes, the SMBJ28CA-TR is RoHS compliant with an Ecopack2 designation).
- What are the typical applications of the SMBJ28CA-TR?
The SMBJ28CA-TR is used in telecommunications, computer systems, industrial electronics, and consumer electronics to protect against voltage transients and ESD).
- What is the lead finishing of the SMBJ28CA-TR?
The SMBJ28CA-TR has matte tin lead-free plating).
- Does the SMBJ28CA-TR meet any specific industry standards?
Yes, it meets standards such as IEC 61000-4-2 for ESD protection and UL Recognized compound meeting flammability classification V-0).
- What is the storage temperature range for the SMBJ28CA-TR?
The storage temperature range for the SMBJ28CA-TR is -65°C to 175°C).
