Overview
The SM15T33AY is a Transient Voltage Suppressor (TVS) diode produced by STMicroelectronics, designed to protect sensitive automotive circuits against surges and electrostatic discharges. This component is part of the SM15TxxAY series, which utilizes planar technology to ensure high reliability and stability in high-end circuits. It is AEC-Q101 qualified, making it suitable for automotive applications where robust protection against electrical hazards is crucial.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power Dissipation (10/1000 µs) | 1500 | W |
| Peak Pulse Power Dissipation (8/20 µs) | 10 kW | W |
| Stand-off Voltage | 33 V | V |
| Maximum Junction Temperature | 150 °C | °C |
| Leakage Current at 25 °C | 0.2 µA | µA |
| Leakage Current at 85 °C | 1 µA | µA |
| Storage Temperature Range | -65 to +150 °C | °C |
| Maximum Lead Temperature for Soldering | 260 °C | °C |
| Package Type | SMC (Surface Mount) | |
| Lead Finishing | Matte Tin Plating |
Key Features
- AEC-Q101 qualified for automotive applications.
- High peak pulse power dissipation: up to 1500 W (10/1000 µs) and 10 kW (8/20 µs).
- Low leakage current: 0.2 µA at 25 °C and 1 µA at 85 °C.
- Operating junction temperature range: -55 to +150 °C.
- Unidirectional and bidirectional types available.
- Compliance with various standards: UL94 V0, J-STD-020 MSL level 1, J-STD-002, JESD 22-B102 E3, MIL-STD-750 method 2026, and more.
- High power capability at maximum junction temperature.
- Lead finishing: matte tin plating.
Applications
The SM15T33AY is designed to protect sensitive automotive circuits against electrical surges and electrostatic discharges. It is particularly useful in applications such as:
- Automotive electronics protection (e.g., infotainment systems, safety systems).
- Protection against ISO 7637-2 surges and ISO 10605 electrostatic discharges.
- High-reliability circuits requiring low leakage current and high junction temperature stability.
Q & A
- What is the peak pulse power dissipation of the SM15T33AY?
The peak pulse power dissipation is up to 1500 W (10/1000 µs) and 10 kW (8/20 µs).
- What is the stand-off voltage of the SM15T33AY?
The stand-off voltage is 33 V.
- What is the maximum junction temperature for the SM15T33AY?
The maximum junction temperature is 150 °C.
- Is the SM15T33AY AEC-Q101 qualified?
- What are the leakage current values at different temperatures?
The leakage current is 0.2 µA at 25 °C and 1 µA at 85 °C.
- What package type does the SM15T33AY come in?
The SM15T33AY comes in an SMC (Surface Mount) package.
- What is the lead finishing of the SM15T33AY?
The lead finishing is matte tin plating.
- What standards does the SM15T33AY comply with?
The SM15T33AY complies with standards such as UL94 V0, J-STD-020 MSL level 1, J-STD-002, JESD 22-B102 E3, MIL-STD-750 method 2026, and more.
- What are the typical applications of the SM15T33AY?
The SM15T33AY is used to protect sensitive automotive circuits against electrical surges and electrostatic discharges.
- How should the SM15T33AY be soldered?
The recommended soldering reflow profile is provided in the datasheet, following the latest IPC/JEDEC J-STD-020 standards.
