Overview
The SMAJ30A-TR is a Transil TVS (Transient Voltage Suppressor) diode manufactured by STMicroelectronics. This component is specifically designed to protect sensitive electronic equipment against transient overvoltages, such as those induced by lightning and other transient voltage events. The SMAJ30A-TR is part of the SMAJ series, known for its high reliability and robust protection capabilities.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Peak Pulse Power Dissipation at TA=25°C by 10/1000µs Waveform | PPPM | 400 | W |
| Peak Forward Surge Current, 8.3ms Single Half Sine Wave | IFSM | 60 | A |
| Maximum Instantaneous Forward Voltage at 25A for Unidirectional Only | VF | 3.5/5.0 | V |
| Operating Temperature Range | TJ | -65 to 150 | °C |
| Storage Temperature Range | TSTG | -65 to 175 | °C |
| Typical Thermal Resistance Junction to Lead | RθJL | 30 | °C/W |
| Typical Thermal Resistance Junction to Ambient | RθJA | 120 | °C/W |
| Reverse Stand-off Voltage | VR | 30 | V |
| Breakdown Voltage | VBR | 33.3 | V |
| Maximum Clamping Voltage | VC | 43.5 | V |
| Maximum Peak Pulse Current | Ipp | 36 | A |
| Package | SMA (DO-214AC) |
Key Features
- 400W Peak Pulse Power capability at 10/1000µs waveform, with a repetition rate (duty cycle) of 0.01%.
- Excellent clamping capability to protect against transient overvoltages.
- Surface mount footprint for compact PCB layout and low profile package.
- Typical IR less than 1μA when VBR min > 12V.
- Fast response time: typically less than 1.0ps from 0 Volts to VBR min.
- Glass passivated junction and low inductance.
- High temperature to reflow soldering guaranteed: 260°C/30sec.
- ESD protection of data lines in accordance with IEC 61000-4-2 and EFT protection in accordance with IEC 61000-4-4.
- Plastic package is flammability rated V-0 per UL-94 and meets MSL level 1, per J-STD-020.
- Matte tin, lead–free plated, halogen free, and RoHS compliant.
Applications
The SMAJ30A-TR TVS diode is ideal for protecting I/O interfaces, VCC bus, and other vulnerable circuits in various applications, including:
- Telecom equipment
- Computer systems
- Industrial electronics
- Consumer electronics
Q & A
- What is the peak pulse power dissipation of the SMAJ30A-TR?
The peak pulse power dissipation of the SMAJ30A-TR is 400W at 10/1000µs waveform.
- What is the maximum forward surge current for the SMAJ30A-TR?
The maximum forward surge current is 60A for an 8.3ms single half sine wave.
- What is the operating temperature range of the SMAJ30A-TR?
The operating temperature range is -65°C to 150°C).
- What type of package does the SMAJ30A-TR use?
The SMAJ30A-TR uses an SMA (DO-214AC) package).
- Is the SMAJ30A-TR RoHS compliant?
- What are the ESD and EFT protection standards met by the SMAJ30A-TR?
The SMAJ30A-TR meets ESD protection according to IEC 61000-4-2 and EFT protection according to IEC 61000-4-4).
- What is the typical thermal resistance junction to ambient for the SMAJ30A-TR?
The typical thermal resistance junction to ambient is 120°C/W).
- What is the breakdown voltage of the SMAJ30A-TR?
The breakdown voltage (VBR) is 33.3V).
- What is the maximum clamping voltage of the SMAJ30A-TR?
The maximum clamping voltage (VC) is 43.5V).
- Is the SMAJ30A-TR suitable for high-temperature soldering?
