In low-power switching power supplies, consumer electronic adapters, LED drivers, battery chargers and other circuits, rectifier diodes play a core role in AC-to-DC conversion and reverse blocking. The withstand voltage, leakage performance, surge tolerance and package reliability of the device directly affect the operational stability and service life of the power system. The Slkor SM4007PL (market model: A7) is a general-purpose plastic-encapsulated rectifier diode in a miniature SOD-123 package. It features a rated repetitive peak reverse voltage of 1000V, supports an average forward rectified current of 1.0A, and delivers low reverse leakage, high forward surge capability and high-temperature soldering compatibility. Suitable for various low-power rectification scenarios, it serves as a cost-effective rectifier solution for consumer electronics and industrial auxiliary power applications.

1. Core Product Parameters

• Device Type: General-purpose plastic-encapsulated rectifier diode
• Repetitive Peak Reverse Voltage (VRRM): 1000V
• DC Blocking Voltage (VDC): 1000V
• Average Forward Rectified Current (IO(AV), TA=75℃): 1.0A
• Peak Forward Surge Current (IFSM): 30A
• Typical Forward Voltage (VF, @1.0A): 1.1V
• Typical Reverse Recovery Time (trr): 30μs
• Operating Junction Temperature Range (TJ): -50℃ ~ +175℃
• Package: SOD-123 plastic encapsulation

2. Core Product Features

2.1 1000V Withstand Voltage for General Rectification Scenarios

With a rated reverse withstand voltage of 1000V, it covers the rectification input requirements of most low-power offline power supplies and adapters. It can be used in various topologies such as single-diode rectification and bridge rectification, and adapts to high-voltage rectification conditions on the AC input side with wide scenario applicability.

2.2 Low Reverse Leakage for Reduced Standby Loss

The device features low reverse leakage current, maintaining minimal leakage loss at rated blocking voltage. It helps reduce the standby power consumption of power systems and improve overall energy efficiency. Meanwhile, the increase in leakage current under high-temperature conditions is well controlled, ensuring rectification performance in high-temperature environments.

2.3 High Surge Withstand Capability Against Startup Inrush

With a peak forward surge current tolerance of 30A, it can withstand the inrush current at power-on, reduce the risk of device damage caused by startup spikes, and improve the long-term operational reliability of the whole equipment.

2.4 Reliable Molding Process for Mass Production

Adopting void-free molded plastic technology, the plastic body meets UL 94V-0 flammability rating with excellent safety performance. It supports high-temperature soldering at 250℃ for 10 seconds, compatible with standard wave soldering and reflow soldering processes, and meets relevant solderability standards, suitable for automated SMT mass production. The axial lead design allows flexible mounting positions, and the compact size and light weight fit compact PCB layouts.

2.5 Wide Junction Temperature Range for Strong Environmental Adaptability

Supporting a junction temperature range from -50℃ to +175℃, it adapts to temperature fluctuations in different regions and working conditions, meets the demands of both low-temperature startup and high-temperature full-load operation, and operates stably in consumer electronics, industrial auxiliary power and other scenarios.

3. Main Application Fields

With balanced electrical performance and reliable plastic package quality, the SM4007PL (A7) is widely used in various low-power rectification scenarios: low-power switching power supplies, power adapters, mobile phone chargers, LED driving power supplies, battery charging circuits, home appliance control board rectifier units, small appliance power modules, signal rectification circuits, input rectification of industrial auxiliary power supplies, etc.

4. Engineering Design Guidelines

Soldering Specifications: Refer to the high-temperature soldering condition of 250℃ for 10 seconds during soldering. Avoid prolonged high-temperature soldering to prevent plastic body damage and device performance drift. Voltage Margin: It is recommended to reserve an appropriate voltage margin in practical applications, avoid long-term operation close to the rated withstand voltage, and reduce the breakdown risk caused by surge voltage. Thermal Design: For 1.0A current rating, design the thermal scheme according to the actual duty cycle to ensure the device junction temperature is within the specified range and improve long-term operational stability. Parallel Operation: When multiple devices are used in parallel, it is recommended to select devices with good parameter consistency, and 搭配 current sharing measures if necessary to ensure balanced current distribution. Storage and Handling: As a plastic-encapsulated semiconductor device, pay attention to moisture protection and mechanical stress during storage and assembly to avoid lead deformation and plastic body damage.

5. Product Summary

The Slkor SM4007PL (A7) is a general-purpose plastic-encapsulated rectifier diode in SOD-123 package. It features 1000V reverse withstand voltage, 1.0A forward rectification capability and 30A surge tolerance, paired with low reverse leakage, reliable flame-retardant plastic package and wide-temperature operating characteristics. With balanced parameters and mature technology, it can be widely adapted to various low-power power supply and rectification circuits, serving as a reliable and cost-effective domestic device choice for low-power rectification scenarios.

Slkor introduction
According to Song Shiqiang, Slkor Semiconductor (https://www.slkormicro.com) grandly opened its third franchised store in Huaqiangbei on August 14, 2026. The store mainly offers MOSFETs, power-management ICs, Hall elements, optocouplers, IGBTs, SiC silicon-carbide components, AC/DC devices, TVS diodes, Schottky diodes, thyristors and other electronic components.



SM4007PL A7 To Product Pag