Overview
The SMF33AT1G is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc. This component is designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It features excellent clamping capability, high surge current handling, and a fast response time, making it ideal for various applications in consumer electronics and industrial settings.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Peak Pulse Power Dissipation at 10/1000µs | PPPM | 200 | W |
| Peak Pulse Power Dissipation at 8/20µs | PPPM | 1200 | W |
| Thermal Resistance Junction-to-Ambient | RθJA | 220 | °C/W |
| Thermal Resistance Junction-to-Lead | RθJL | 100 | °C/W |
| Operating Temperature Range | TJ | -55 to 150 | °C |
| Storage Temperature Range | TSTG | -55 to 150 | °C |
| Breakdown Voltage (VBR) @ IT | VBR | 33 V | V |
| Reverse Stand-off Voltage (VR) | VR | 33 V | V |
| Maximum Reverse Leakage @ VR | IR | 0.5 µA | µA |
| Maximum Peak Pulse Current (10/1000µs) | Ipp | 30 A | A |
| Maximum Clamping Voltage @ Ipp (10/1000µs) | VC | 53.3 V | V |
| Maximum Peak Pulse Current (8/20µs) | Ipp | 120 A | A |
| Maximum Clamping Voltage @ Ipp (8/20µs) | VC | 53.3 V | V |
| Package Type | SOD-123FL |
Key Features
- Excellent clamping capability and high surge current handling.
- Fast response time: typically less than 1.0 ns from 0 Volts to VBR min.
- Low profile: maximum height of 1.08 mm, ideal for surface mount applications to optimize board space.
- Compatible with industrial standard package SOD-123FL.
- High temperature soldering: 260°C/40 seconds at terminals.
- Meet MSL level 1, per J-STD-020C, with a maximum peak of 260°C.
- Matte tin lead–free plated, halogen-free, and RoHS compliant.
- ESD protection of data lines in accordance with IEC 61000-4-2 (30kV Air, 30kV Contact).
- EFT protection of data lines in accordance with IEC 61000-4-4.
Applications
The SMF33AT1G is ideal for the protection of various electronic devices and systems, including:
- Portable devices and hard drives.
- Notebooks and VCC busses.
- POS terminals and SSDs.
- Power supplies and monitors.
- Vulnerable circuits in other consumer applications.
Q & A
- What is the peak pulse power dissipation of the SMF33AT1G at 10/1000µs?
The peak pulse power dissipation at 10/1000µs is 200 W.
- What is the maximum operating temperature range for the SMF33AT1G?
The operating temperature range is -55°C to 150°C.
- What is the breakdown voltage (VBR) of the SMF33AT1G?
The breakdown voltage (VBR) is 33 V.
- What is the maximum reverse leakage current at the stand-off voltage?
The maximum reverse leakage current at the stand-off voltage is 0.5 µA.
- What is the response time of the SMF33AT1G?
The response time is typically less than 1.0 ns from 0 Volts to VBR min.
- Is the SMF33AT1G RoHS compliant?
Yes, the SMF33AT1G is RoHS compliant and halogen-free.
- What package type does the SMF33AT1G use?
The SMF33AT1G uses the SOD-123FL package type.
- What are the ESD protection capabilities of the SMF33AT1G?
The SMF33AT1G provides ESD protection in accordance with IEC 61000-4-2 (30kV Air, 30kV Contact).
- What is the thermal resistance junction-to-ambient of the SMF33AT1G?
The thermal resistance junction-to-ambient is 220 °C/W.
- What are the soldering parameters for the SMF33AT1G?
The SMF33AT1G can be soldered at a temperature of up to 260°C for 40 seconds at the terminals.
