Overview
The SMA4F5.0AY is a Transil TVS (Transient Voltage Suppressor) diode produced by STMicroelectronics. This component is designed to protect sensitive automotive and industrial circuits against surges and electrostatic discharges. It is part of the SMA4FxxAY series, which utilizes planar technology to ensure low leakage current and high junction temperature, providing long-term reliability and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reverse Standoff Voltage (VRM) | 5.0 | V |
| Breakdown Voltage (VBR) at IR (1 mA) | 6.4 | V |
| Peak Pulse Voltage (VPP) | 30 | kV (contact and air discharge, ISO10605) |
| Peak Pulse Power Dissipation (PPP) | 400 | W (10/1000 µs, Tj initial = Tamb) |
| Maximum Peak Current (IPP) | 174 | A (8/20 µs) |
| Storage Temperature Range | -65 to +175 | °C |
| Operating Junction Temperature Range | -55 to +175 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C (during 10 s) |
| Package Type | DO-221AC (SMA Flat) |
Key Features
- High Surge Capability: The SMA4F5.0AY can withstand peak pulse voltages up to 30 kV for both contact and air discharges according to ISO10605 and IEC 61000-4-2 standards.
- Low Leakage Current: It features a low leakage current, which is essential for high-end circuits requiring long-term reliability and stability.
- Planar Technology: Utilizes planar technology to ensure high junction temperature and low leakage current.
- Automotive and Industrial Compliance: Designed to protect against surges defined in ISO 7637 series and electrostatic discharges according to ISO 10605, making it suitable for automotive and industrial applications.
- Compact Package: Available in the DO-221AC (SMA Flat) package, which is compact and suitable for space-constrained designs.
Applications
- Automotive Systems: Protects sensitive circuits in automotive systems against voltage surges and electrostatic discharges.
- Industrial Control Systems: Used in industrial control systems to protect against power line surges and other transient voltages.
- Power Supplies: Can be used in power supply units to protect against voltage spikes and surges.
- Communication Equipment: Suitable for protecting communication equipment such as Ethernet and USB interfaces.
Q & A
- What is the primary function of the SMA4F5.0AY TVS diode?
The primary function of the SMA4F5.0AY is to protect sensitive circuits against voltage surges and electrostatic discharges.
- What are the key standards that the SMA4F5.0AY complies with?
The SMA4F5.0AY complies with ISO 7637 series for automotive surges and ISO 10605 for electrostatic discharges.
- What is the peak pulse voltage rating of the SMA4F5.0AY?
The SMA4F5.0AY is rated for 30 kV for both contact and air discharges according to ISO10605 and IEC 61000-4-2 standards.
- What is the maximum peak current (IPP) the SMA4F5.0AY can handle?
The SMA4F5.0AY can handle a maximum peak current of 174 A (8/20 µs).
- What is the operating junction temperature range of the SMA4F5.0AY?
The operating junction temperature range is -55 to +175 °C.
- What type of package does the SMA4F5.0AY come in?
The SMA4F5.0AY comes in the DO-221AC (SMA Flat) package.
- Why is planar technology important in the SMA4F5.0AY?
Planar technology ensures low leakage current and high junction temperature, providing long-term reliability and stability.
- Can the SMA4F5.0AY be used in industrial applications?
- What is the storage temperature range for the SMA4F5.0AY?
The storage temperature range is -65 to +175 °C.
- How does the SMA4F5.0AY protect against electrostatic discharges?
The SMA4F5.0AY protects against electrostatic discharges by clamping the voltage to a safe level, preventing damage to sensitive circuits.
