USBLC6-4SC6 Detailed explanation of pin function specifications and circuit principle instructions

The model you mentioned, "USBLC6-4SC6," is a transient voltage suppressor ( TVS ) diode produced by STMicroelectronics, designed for protecting electronic circuits against voltage spikes or surges, typically caused by electrostatic discharge (ESD) or other transient events.

Regarding the packaging, the USBLC6-4SC6 comes in a SC-6 package, which is commonly a 6-pin SMD (Surface Mount Device) type.

I'll now provide the detailed explanation of each of the 6 pins of the USBLC6-4SC6, followed by common FAQ-style questions and answers related to its usage and pin functions.

Pin Function Table:

Pin Number Pin Name Function Description 1 Vcc Positive supply voltage input. This pin should be connected to the positive side of the circuit's power supply. It acts as the main power input for the device. 2 I/O1 Input/Output Pin 1. This pin is typically used for the primary signal or power line, and it is protected against transient voltages by the TVS diode. 3 I/O2 Input/Output Pin 2. Similar to I/O1, this pin also acts as a signal or power input/output and is similarly protected by the TVS diode. 4 GND Ground pin. This pin should be connected to the circuit’s ground. It completes the current path and provides a reference voltage for the device. 5 Vcc Another Positive supply voltage input. Like Pin 1, this pin should be connected to the positive supply for the second voltage rail or for redundancy. 6 I/O3 Input/Output Pin 3. This pin is part of the TVS diode protection mechanism, safeguarding against transient spikes on connected signals or power lines.

Pin Count: 6 pins

FAQ for USBLC6-4SC6:

Q: What is the primary function of the USBLC6-4SC6 diode? A: The USBLC6-4SC6 is primarily designed to protect electronic circuits against voltage spikes caused by electrostatic discharge (ESD) and other transient events.

Q: How many pins does the USBLC6-4SC6 have? A: The USBLC6-4SC6 has 6 pins in total.

Q: What type of package does the USBLC6-4SC6 come in? A: The USBLC6-4SC6 comes in an SC-6 package, which is a small surface-mount type.

Q: What is the maximum reverse working voltage of the USBLC6-4SC6? A: The maximum reverse working voltage is typically around 5.5V.

Q: Can the USBLC6-4SC6 be used in low-voltage circuits? A: Yes, it is designed to protect circuits in low-voltage applications, with the breakdown voltage typically around 6V.

Q: What happens if the USBLC6-4SC6 exceeds its maximum voltage rating? A: Exceeding the voltage rating can result in failure of the device, either through thermal breakdown or permanent damage to the protection diode.

Q: Does the USBLC6-4SC6 have a specific polarity? A: No, the USBLC6-4SC6 is designed to be bidirectional and can protect both positive and negative voltage transients.

Q: Is the USBLC6-4SC6 suitable for USB port protection? A: Yes, the USBLC6-4SC6 is commonly used for protecting USB data lines and power rails.

Q: What is the capacitance of the USBLC6-4SC6? A: The typical capacitance of the USBLC6-4SC6 is around 5pF, which is very low and does not significantly impact signal transmission.

Q: How does the USBLC6-4SC6 protect the circuit from voltage spikes? A: The device works by clamping the transient voltage to a safe level, thus preventing it from reaching and damaging sensitive components.

Q: Can the USBLC6-4SC6 be used for automotive applications? A: Yes, the USBLC6-4SC6 can be used in automotive applications where transient protection is needed for circuits like USB power lines.

Q: Is the USBLC6-4SC6 RoHS compliant? A: Yes, the USBLC6-4SC6 is RoHS compliant, meaning it is free from hazardous substances like lead, mercury, and cadmium.

Q: What is the power dissipation rating of the USBLC6-4SC6? A: The USBLC6-4SC6 has a power dissipation rating of around 200W for short-duration pulses.

Q: Can the USBLC6-4SC6 be used for both power and signal protection? A: Yes, it is suitable for both power and signal line protection against transient voltage surges.

Q: What is the response time of the USBLC6-4SC6 during a voltage spike? A: The response time is typically in the range of nanoseconds, making it ideal for fast-transient protection.

Q: Can the USBLC6-4SC6 protect against ESD on data lines? A: Yes, the USBLC6-4SC6 is highly effective at protecting data lines from electrostatic discharge (ESD).

Q: Is the USBLC6-4SC6 a unidirectional or bidirectional device? A: The USBLC6-4SC6 is bidirectional, meaning it can protect both positive and negative voltage transients.

Q: What are the typical applications for the USBLC6-4SC6? A: Typical applications include USB ports, communication lines, and other sensitive electronic circuits that require ESD protection.

Q: How is the USBLC6-4SC6 connected in a circuit? A: The USBLC6-4SC6 is connected in parallel with the protected circuit, with its I/O pins connected to the lines that require protection, and its ground pin connected to the circuit ground.

Q: Can the USBLC6-4SC6 be used in both AC and DC circuits? A: Yes, the USBLC6-4SC6 can be used in both AC and DC circuits, as long as the voltage does not exceed its specified ratings.

This detailed explanation of the USBLC6-4SC6 and its pins, along with the FAQ section, provides an extensive overview of the component’s specifications and functionality. Let me know if you need further clarifications or more detailed technical information!