CPDT-5V0 vs PRTR5V0U4AD,125
| Part Number |
|
|
| Category | TVS - Diodes | TVS - Diodes |
| Manufacturer | Comchip Technology | NXP USA Inc. |
| Description | TVS DIODE 5VWM 15VC SOT23 | TVS DIODE 5.5VWM 6TSOP |
| Package | TO-236-3, SC-59, SOT-23-3 | SC-74, SOT-457 |
| Series | - | - |
| Type | Zener | Steering (Rail to Rail) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | SC-74, SOT-457 |
| Supplier Device Package | SOT-23-3 | 6-TSOP |
| Applications | General Purpose | General Purpose |
| Voltage - Reverse Standoff (Typ) | 5V | 5.5V (Max) |
| Voltage - Breakdown (Min) | 5.1V | 6V |
| Voltage - Clamping (Max) @ Ipp | 15V | - |
| Current - Peak Pulse (10/1000µs) | 5A (8/20µs) | - |
| Power - Peak Pulse | 75W | - |
| Power Line Protection | No | Yes |
| Bidirectional Channels | 2 | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) |
| Unidirectional Channels | - | 4 |
| Capacitance @ Frequency | - | 1pF @ 1MHz |
-
1. TVS is the abbreviation of diode. What does it mean?
TVS is the abbreviation of Transient Voltage Suppressor, also known as Transient Voltage Suppression Diode.
How TVS diodes work
TVS diodes work using the avalanche breakdown effect. When the TVS diode receives a reverse voltage, the depletion layer near its PN junction will increase, causing the electric field intensity to increase, which in turn triggers the avalanche effect and causes the reverse current to increase sharply. Unlike ordinary diodes, TVS diodes can recover after avalanche breakdown and continue to work normally. -
2. Are TVS diodes and Zener diodes the same?
TVS diodes and Zener diodes have significant differences in functionality and characteristics, so they are not identical.
Definition and purpose
Zener diode: Zener diode is a diode that uses a PN junction for reverse breakdown. It is mainly used to ensure voltage stability. It has a high resistance state before the reverse breakdown voltage and is in a low resistance state after exceeding this critical point. It is widely used in various voltage stabilizing circuits and reference voltage components.
TVS Diode: TVS diode (Transient Suppression Diode) has surge absorption capability and is mainly used to protect circuits from damage caused by transient high voltages such as surges and electrostatic discharge (ESD). It can absorb a large amount of instantaneous current and voltage in a short period of time, protecting the subsequent equipment or circuits from damage.
-
3. What is the difference between TVS and ESD diodes?
The main difference between TVS diodes and ESD diodes is their working principle, application scenarios and characteristics.
Working principle and application scenarios
TVS diodes (Transient Voltage Suppressors): TVS diodes are mainly used to suppress transient voltages and prevent components in the circuit from being damaged by surge voltages. When the two poles of the TVS diode are impacted by reverse transient high energy, it can change the high impedance to low impedance in a very short time, absorb the surge power, and protect the precision components in the circuit1. TVS diodes are suitable for protection against various surge pulses, such as lightning strikes, large-capacity load switching, etc.
ESD diode (Electro-Static discharge): ESD diode is mainly used to prevent static electricity and prevent damage to electronic equipment caused by electrostatic discharge. ESD diodes have low capacitance values, typically between 1 and 3.5 picofarad (PF), to accommodate the rapid changes in electrostatic discharge. ESD diodes are suitable for board-level protection, especially in high-speed USB and I/O interfaces, which have higher requirements for electrostatic discharge.
-
4. How fast are TVS diodes?
TVS diodes are very fast and can respond within 10^-12 seconds (i.e. 1 nanosecond). When the two poles of the TVS diode are impacted by reverse transient high energy, it can change the high impedance between its two poles into low impedance in a very short time, while absorbing surge power up to several kilowatts, reducing the voltage between the two poles. It is clamped to a predetermined safe value, thereby effectively protecting precision components in electronic circuits from damage by various surge pulses.
This fast response characteristic of TVS diodes allows them to play an important role in various electronic systems, especially where precision electronic components need to be protected from transient voltage impacts. For example, in the fields of computer systems, communication equipment, automotive electronics, household appliances, etc., TVS diodes are widely used to protect circuits from electrostatic discharge, surge voltage, and electromagnetic interference.
