Schottky diodes are widely used in fields such as power rectification, circuit protection, and signal processing due to their low forward voltage drop, fast switching speed, and high-frequency performance. Different models are designed for specific scenarios. The following introduces mainstream models and their characteristics by power level and application scenario classification for reference:
1、 Small SMD package (for low-power applications)
Suitable for portable devices, high-frequency circuits, and space constrained designs:
1. BAS4007 (NXP)
Key parameters: 120mA forward current, 40V reverse voltage VF=500mV
Packaging: SOT143B (3mm × 1.4mm)
Features: Dual diode isolation structure, suitable for signal clamping and high-speed switching.
2. 1PS76SB21Q (Nexperia)
Key parameters: 200mA current, 40V withstand voltage, capacitance<50pF
Packaging: SOD323 (1.7mm × 1.25mm)
Features: AECQ101 vehicle specification certification, used for polarity protection and voltage clamping.
3. RB717FFH (ROHM)
Key parameters: 30mA current, 40V withstand voltage VF≤0.37V
Packaging: SOT323 (2.0mm × 2.1mm)
Features: Ultra low leakage current (1 μ A @ 10V), suitable for battery monitoring circuits.
2、 Medium power plastic packaging (universal rectifier and power supply)
Suitable for scenarios such as power conversion and industrial control:
1. BAT54S (GOODWORK)
Key parameters: 200mA current, 30V withstand voltage VF= 1V@200mA
Encapsulation: SOT23
Features: Dual series structure, low cost, suitable for high-frequency rectification.
2. SS510 (DO214AB package)
Key parameters: 5A current, 100V withstand voltage VF=550mV
Packaging: DO214AB (SMC)
Features: Strong surge resistance and support for high-frequency DCDC conversion.
3. ROHM RBxx8LAM40 series (such as RB088LAM40)
Key parameters: 1A~2A current, 40V withstand voltage IFSM=40~90A
Package: SOD128
Features: Low reverse current (<3.6 μ A @ 30V), used for photovoltaic inverters and small rectifiers.
3、 High power module (high current rectification)
For high voltage and high current scenarios such as industrial power supplies and automotive electronics:
1. MBRF1050CT
Key parameters: 10A current, 50V withstand voltage VF=0.95V
Packaging: TO220F (fully plastic sealed)
Features: 150A surge resistance, suitable for car starting systems and server power supplies.
2. MBR3045CS (YFW)
Key parameters: 30A current, 45V withstand voltage
Packaging: TO252 (DPAK)
Features: Low thermal resistance design, used for battery protection circuits and fast charging adapters.
3. HRW36 (Renesas)
Key parameters: 10A current, 90V withstand voltage VF=0.8V
Packaging: TO220AB
Features: Silicon Schottky structure, high temperature resistance (125 ℃), suitable for high-frequency rectification.
4. SDS20045JEBZKS
Key parameters: 20A current, 45V withstand voltage VF=0.7V
Packaging: TO259AA (metal shell)
Features: Common cathode dual diode, supporting 380A surge current, used for industrial power modules.
4、 Model Quick Check Table
The following table summarizes the key model parameters for easy and quick selection:
|Model | Brand | Current | Voltage | VF Typical Values | Packaging | Applicable Scenarios|
| BAS4007 | NXP | 120mA | 40V | 500mV | SOT143B | Signal clamp, high-speed switch|
| 1PS76SB21Q | Nexperia | 200mA | 40V | 300mV | SOD323 | Polarity protection for vehicles|
| BAT54S | GOODWORK | 200mA | 30V | 1V | SOT23 | High frequency rectification, logic circuit|
| SS510 | | 5A | 100V | 550mV | DO214AB | DCDC Conversion and inverter|
| MBRF1050CT | SZXYL | 10A | 50V | 0.95V | TO220F | Automotive charging system, industrial power supply|
| MBR3045CS | YFW | 30A | 45V | 0.6V | TO252 | Battery management, fast charging adapter|
5、 Selection suggestions
1. Low power scenario: Select SOT/SOD packaging models (such as BAS4007, RB717FFH), focusing on low VF and leakage current;
2. Power conversion: Choose SS510 or ROHM SOD128 series for medium power, balancing efficiency and cost;
3. High reliability requirements: 1PS76SB21Q for automotive grade and MBRF1050CT for industrial grade;
4. Heat dissipation challenge: TO220/TO252 package (such as MBR3045CS) with heat sink, suitable for continuous high current scenarios.
The actual selection needs to be comprehensively considered based on working frequency, temperature rise limitations, and cost. It is recommended to consult the manufacturer's manual to verify parameter details such as temperature drift and transient response, and prioritize selecting AECQ101 certified models for use in automotive or industrial environments.