In-depth Analysis of SS34 Schottky Diode
08 March 2024
Ⅲ. Technical parameters of SS34 diode
Ⅴ. Working principle of SS34 diode
Ⅵ. Typical characteristics of SS34 diodes
Ⅶ. Case analysis of SS34 diode
Ⅷ. How to choose SS34 Schottky diode?
Ⅸ. What are the differences between SS14, SS24 and SS34?
The SS34 diode is a silicon-based P-N junction diode. It has many excellent properties, such as low forward resistance, low leakage current, fast recovery time, high on-current and high reverse voltage. This article will elaborate on the relevant information of SS34 diodes, including their uses, parameters, advantages, working principles and application areas, aiming to provide you with a comprehensive understanding.
SS34 is a chip Schottky diode, commonly used in small current (model) ESCs for instant rectification of circuits. The SS34 diodes are available in an SMB surface mount package and measure 3.6mm x 2.8mm x 1.95mm. It has the characteristics of high-speed response, high voltage endurance and high temperature endurance, and is widely used in communication equipment, power management, automotive electronics, industrial control and other fields.
Alternatives and equivalents:
• SS36
SS34 diodes are mainly used in high-frequency electronic circuits such as AC power supplies, circuit boards, power protection, switching power supplies, etc. Its fast recovery and high on-current characteristics make it an ideal choice for applications such as high-speed switches and rectifiers. In addition, SS34 diodes can also be used as terminal chips for ESD protection on PCB boards.
In AC power supply, SS34 diodes are mainly used for rectification and filtering, which can effectively convert high-frequency AC signals into stable DC power supply. In this process, it usually works together with the capacitor to effectively eliminate noise and improve the quality of the power supply. In switching power supplies, SS34 diodes are mainly used for current limiting and inversion. Its fast recovery feature enables the switching power supply to work efficiently and improve overall performance. In terms of power supply protection, SS34 diodes can protect sensitive components such as ICs from overvoltage impacts and instantaneous high voltage damage, greatly improving the reliability and life of the circuit. This feature is essential to protect the stable operation of the entire electronic system.
• Part Status: Active
• Manufacturer: onsemi
• Package / Case: SMC (DO-214AB)
• Packaging: Tape and Reel
• Configuration: Single
• If - Forward Current: 3 A
• Ir - Reverse Current: 500 uA
• Vf - Forward Voltage: 500 mV
• Vrrm - Repetitive Reverse Voltage: 40 V
• Operating Temperature: -55°C ~ 150°C
• Pin Count: 2
• Mounting Style: SMD/SMT
• Product Category: Schottky Diodes & Rectifiers
SS34 Schottky diodes show significant advantages in many aspects:
1. Miniaturized packaging: The SS34 model adopts SMA packaging, which is compact and suitable for use in various miniaturized devices.
2. Excellent thermal stability: SS34 still maintains stable performance in high temperature environments, making it possible to be used in various harsh environments.
3. High temperature endurance: SS34 can work normally at temperatures up to 150°C, which makes them very reliable for use in high temperature environments.
4. Fast-response switching characteristics: Its fast switching speed makes it perform well in high-frequency applications and pulse circuits, greatly improving the overall performance of the circuit.
5. Low forward voltage drop and high efficiency: The low forward voltage drop of SS34 means less energy loss when current passes through, thus improving the overall energy efficiency.
6. High surge current capability: This diode has a high surge current tolerance and can cope with instantaneous large current impacts in the circuit and protect other components from damage.
The working principle of SS34 is based on the rectification principle of PN junction. When a forward voltage is applied to the PN junction, electrons move from the N region to the P region, and holes move from the P region to the N region. These moving electrons and holes combine near the PN junction to form an electrical potential barrier. This electrical potential barrier prevents electrons and holes from moving further, causing current to flow in only one direction when flowing through the PN junction. And when a reverse voltage is applied to the PN junction, electrons and holes will not move, and the electrical potential barrier will be strengthened. If the reverse voltage is large enough, the electrical potential barrier will be broken down, causing diode damage. Fast recovery diodes are able to quickly return to their normal operating state because they have faster response times and higher reverse voltage tolerance.
1. Breakthrough application in solar inverters
In the solar industry, the use of SS34 Schottky diodes has brought a significant technological breakthrough to a leading solar company. SS34 has been successfully used in the design of inverters, with the main purpose of improving energy conversion efficiency. The excellent thermal stability of SS34 ensures continued efficient operation of the inverter under extreme environmental conditions. This advantage not only increases the output power of solar panels, but also enhances the economic benefits and environmental adaptability of the entire system. The application of SS34 in solar inverter design has set a new industry standard and demonstrated its broad application prospects in the field of renewable energy.
2. Innovative applications of power management systems
A high-tech company recently adopted SS34 Schottky diodes in its advanced power management system. This initiative aims to improve the efficiency and performance of the system. The application of SS34 in this system successfully reduced energy loss and significantly improved the response speed of the system. Especially when the system is subjected to high loads, the efficient performance of SS34 ensures system stability and reliability. This case effectively demonstrates the huge potential of SS34 in reducing operating costs and improving system stability.
1. Clarify application requirements: First, a deep understanding of what our project or product requires is key. We need to consider factors such as operating frequency, current handling capabilities, and voltage requirements. Since the SS34 is designed specifically for high frequency, low voltage drop, and high efficiency applications, make sure it meets our specific needs.
2. Choose trustworthy suppliers: Supplier selection cannot be ignored. A good supplier should have good market reputation, strict quality control system and complete after-sales support.
3. Weigh price vs. performance: We should look for SS34 Schottky diodes with the best performance within our budget. Keep in mind that the cheapest is not always the best choice, performance and long-term stability are the deciding factors.
The only difference between SS14, SS24 and SS34 is their maximum forward rectified current. Specifically, the maximum forward rectified current of SS14 is 1A, SS24 is 2A, and SS34 is 3A.
The specific parameters of these three models are as follows:
• SS14: Maximum reverse peak voltage VRRM=40V, maximum forward rectification current I(AV)=1A, maximum forward voltage drop VF=0.5V, maximum reverse leakage current IR=20mA.
• SS24: Maximum reverse peak voltage VRRM=40V, maximum forward rectification current I(AV)=2A, maximum forward voltage drop VF=0.5V, maximum reverse leakage current IR=20mA.
• SS34: Maximum reverse peak voltage VRRM=40V, maximum forward rectification current I(AV)=3A, maximum forward voltage drop VF=0.5V, maximum reverse leakage current IR=20mA.
SS14, SS24 and SS34 are all Schottky diodes, also known as fast recovery diodes, with unidirectional conductivity. Their most notable feature is the extremely short reverse recovery time, so they are often used as high-frequency, low-voltage, high-current rectifier diodes, freewheeling diodes and protection diodes.
Frequently Asked Questions
1. What is SS34?
SS34 is a surface mount high power Schottky Diode with a low voltage drop of 0.5V and a high forward current of 3A. This diode has high efficiency and high surge current capability of 100A. It is suited for freewheeling, DC/DC converter and reverse polarity protection applications.
2. What is the SMD diode equivalent of SS34?
This is SS34 3A 40V Schottky Diode. This is a SMD version of 1N5822. It has current rating of 3A, with max repetitive voltage of 40V. It is available in SMA and SMB Package.
3. What are the uses of SS14?
SS14 features over-voltage protection with low power losses and high efficiency. SS14 is also know for its low forward voltage drop and high surge capability. These are commonly used in low voltage, high frequency inverters, freewheeling, DC/DC converters and polarity protection applications.
4. What is the voltage drop of SS34 diode?
SS34 Diode has a minimum voltage drop of around 0.2V across it when 0.1A is flowing through it, as the current increases the Voltage drop across the diode also increases. The maximum current through the diode is 3A during when the voltage drop is only 0.5V and the maximum reverse voltage is 40V.
