SRV05-4 datasheet, pdf & price EVVO

SRV05-4

When you’re designing your circuit, using an SRV05-4 is a great way to protect your data lines. It provides strong ESD protection, handling up to ±15kV air discharge and ±8kV contact discharge, so typical static shocks won’t harm your devices.

The chip’s channel capacitance is very low—only around 3pF—so it won’t interfere with high-speed signals. It’s perfect for interfaces like USB, HDMI, and Ethernet. Also, it has an extremely low leakage current, under 1μA, making it ideal for low-power applications.

It offers 4-channel protection in a compact SOT23-6 package, which helps save PCB space. Plus, with a working voltage of up to 5V, it’s suitable for most common low-voltage data interfaces.

SRV05-4 Pinout And Schematic

When you use SRV05-4 for ESD protection, each IO pin (IO1~IO4) connects to the data lines you’re protecting. Keep these lines short to minimize interference. Ground (GND) should connect firmly with short, wide paths to quickly dissipate static charges. For the VCC pin, hook it directly to your system’s power line—usually 5V. Never leave this pin floating, or you’ll lose effective protection.

Position the SRV05-4 close to your connectors to achieve the best protection. Keep the diode-to-pin traces short in your PCB design to reduce interference. Lastly, double-check your signals match the SRV05-4’s voltage range, typically safe for signals up to 5V.

SRV05-4 Equivalent ESD Diode Array

When picking a replacement for the SRV05-4, make sure the voltage range matches your signal lines exactly, or you won’t get proper protection.

If your project needs extra strong ESD protection, like industrial or outdoor setups, choose a model with higher ESD ratings, such as USBLC6-2SC6.

Also, consider your signal speed—if you’re protecting high-speed interfaces like USB 3.0 or HDMI, pick a chip with lower capacitance like TPD4E05U06 to maintain signal integrity. For slower signals, slightly higher capacitance is usually fine.

All these chips use the same SOT23-6 package, making replacements easy. Just choose carefully based on your specific application needs, signal speed, voltage requirements, and protection level to ensure the best performance.

SRV05-4 ESD Protection Circuit Example

When you’re designing a USB interface circuit, using a protection chip like the SRV05-4 is very useful. Basically, it protects your USB port from ESD (static) damage. The USB data lines (D+ and D-) and the power line (VBUS) connect to this chip. When a static discharge hits, the internal diode network instantly clamps that high voltage safely to ground, protecting your USB controller and other electronics behind it.

For best results, place the SRV05-4 close to the USB connector. You’ll typically also have a terminating resistor (R_T) and a decoupling capacitor (C_T) in your circuit. These help with impedance matching and noise filtering, making your signals stable and clean.

SRV05-4 Transient Voltage Suppression

When designing high-speed interfaces like USB, HDMI, or Ethernet, you might face static (ESD) or sudden voltage spikes. That’s where the SRV05-4 TVS diode array comes in handy.

Normally, it’s in a high-resistance state, quietly letting your signals pass. But if a sudden voltage spike hits—like static shock or surge—it instantly switches to a low-resistance mode, clamps down the voltage, and safely redirects it to ground, all in under 1 nanosecond. It’s perfect for protecting signals up to 5V, handling ESD up to ±8kV (contact) and surge currents up to about 17A.

Whether you’re working with consumer electronics, computer ports, or automotive electronics, this little chip helps protect your devices effectively.

SRV05-4 USB Protection Wiring

Connecting SRV05-4 for USB protection is straightforward. Hook your USB chip’s D+ and D- lines to IO1 and IO2 on SRV05-4, and then connect those to the corresponding USB port pins. VBUS (5V) connects directly to VCC. For extra protection, IO3 can safeguard the power line too. Lastly, securely connect SRV05-4’s GND pin to your system ground with the shortest possible path for optimal ESD performance.

SRV05-4 Diode Array In HDMI Circuit

When you’re setting up an HDMI circuit, using an SRV05-4 diode array can effectively protect your lines from static shocks (ESD). It’s ideal for safeguarding HDMI’s differential signals like data lines D0+/D0- and clock lines CLK+/CLK-.

Connecting it is straightforward: link HDMI transmitter data and clock signals directly to SRV05-4’s IO pins. The HDMI +5V line goes to the VCC pin, and ground connects to GND. For extra signals, just add more SRV05-4 chips or use a multi-channel diode array.

Place the SRV05-4 as close as possible to your HDMI connector, keep the ground path short and wide for better ESD protection, and rest assured—the chip’s low capacitance (~3pF) won’t disturb your high-speed signals.

SRV05-4 Signal Integrity And Application

When you’re designing circuits for high-speed data lines, static electricity (ESD) can disrupt your signals or even damage components. That’s why using the SRV05-4 diode array can be super helpful.

Its extremely low capacitance (around 3pF) ensures your high-speed signals, like USB, HDMI, or Ethernet, remain clear and distortion-free. It barely affects signal quality or timing. With very low leakage current (under 1µA), it also won’t add unwanted load to your circuits.

Plus, SRV05-4 responds incredibly fast—under 1ns—quickly clamping voltage spikes back to safe levels. This protects your data lines from interference or damage during static discharges.

Whether it’s a USB port on your smartphone, HDMI outputs on TVs, or industrial RS485 communication lines, the SRV05-4 effectively protects your devices without compromising signal integrity.