Slkor Micro SM4007PLA7: 1000V Withstand Voltage 1A SOD‑123FL General‑Purpose Plastic Rectifier Diode

SM4007PLA7 is the highest-reverse-voltage general-purpose plastic rectifier diode in Slkor Micro SM400xPL series with SOD-123FL package. Its rated parameters are calibrated under 25℃ ambient temperature. It features 1000V reverse withstand voltage and 1.0A average forward rectified current, with low reverse leakage current and high forward-surge-current resistance. It supports high-temperature soldering and has wide temperature adaptability, suitable for medium-low-power circuits for high-voltage rectification, protection and freewheeling.

I. Core Product Parameters

1. Maximum repetitive peak reverse voltage: 1000V
2. Maximum RMS voltage: 700V
3. DC blocking voltage: 1000V
4. Maximum average forward rectified current: 1.0A under 9.5 mm lead length and 75℃ ambient temperature
5. Peak forward surge current: 30.0A under test condition of 8.3 ms single half sine-wave
6. Maximum instantaneous forward voltage: 1.1V at 1.0A operating current
7. DC reverse current: maximum 5.0 μA at 25℃, maximum 50.0 μA at 100℃
8. Typical reverse recovery time: 30.0 μs
9. Typical junction capacitance: 15.0 pF
10. Thermal resistance: junction-to-ambient 50.0℃/W, junction-to-lead 25.0℃/W
11. Temperature parameters: maximum operating ambient temperature 150℃; junction and storage temperature range -50℃ ~ +175℃
12. Package and mechanical specifications: SOD-123FL molded plastic package; plated axial leads; color-band end is cathode; unrestricted mounting position; single-unit weight 0.3 gram.

II. Core Product Features

1. Plastic package complies with UL 94V-0 flammability grade and adopts void-free molded plastic construction.
2. Low reverse leakage current reduces static power consumption of circuits.
3. High capability of withstanding forward surge current to resist short-time large-current impulse.
4. Capable of 250℃ / 10 seconds high-temperature soldering under test condition of 9.5 mm lead length and 2.3 kg tension.
5. Terminals meet standard solderability requirements with no restriction on mounting angle during assembly.
6. Wide junction and storage temperature range to adapt high-low-temperature working conditions.

III. Main Application Fields

1. Rectifier circuits on high-voltage side or secondary side of switching power supplies and power adapters.
2. Anti-reverse-connection protection circuits for consumer electronics and small household appliances.
3. Freewheeling and voltage-clamping circuits for miniature industrial control boards and relay coils.
4. Half-wave high-voltage rectifier loops for chargers and battery-powered devices.
5. General-purpose high-voltage rectification and surge-suppression scenarios for instruments and security equipment.

IV. Suggestions for Engineering Design and Application

1. Rated parameters are measured at 25℃. Derate average forward current when actual ambient temperature rises, and select components referring to the derating curve in datasheet.
2. The 30.0A surge current is measured under 8.3 ms single half sine-wave condition. Do not directly adopt limit parameters under frequent heavy-impulse working conditions and keep sufficient design margin.
3. Reverse leakage current rises significantly with temperature increase. Evaluate power consumption caused by leakage current for high-temperature applications.
4. Strictly control soldering temperature, duration and lead tension to avoid physical damage to the device.
5. Distinguish polarity in assembly. The color-band end of component body is cathode to prevent device failure caused by reversed polarity.
6. Refer to junction-to-lead thermal resistance parameters in PCB layout, and properly design copper foil area to improve heat dissipation performance.
7. Reverse recovery time and junction capacitance are typical test values. Practical prototype verification shall be carried out for high-frequency circuits.

V. Product Summary

SM4007PL+A7 is a high-voltage general-purpose rectifier diode in SOD-123FL package with 1000V reverse withstand voltage and rated average forward current of 1.0A. With flame-retardant package, surge-resistance and wide operating-temperature range, it is mainly used for medium-low-power circuits requiring high reverse withstand voltage, such as rectification, freewheeling and clamping protection, widely applied in consumer electronics and miniature industrial equipment. In engineering practice, current derating and thermal design shall be completed according to operating temperature to guarantee long-term operational reliability.

About Slkor：

Slkor has research and development offices in Busan, South Korea, Beijing, China, and Suzhou, China. Most of the wafer manufacturing and packaging and testing are carried out within China. The company employs and collaborates with individuals and organizations worldwide, with a laboratory for product performance and reliability testing and a central warehouse located at its headquarters in Shenzhen. Slkor has filed for over a hundred invention patents, offers more than 2,000 product models, and serves over ten thousand customers globally. Its products are exported to countries and regions including Europe, the Americas, Southeast Asia, and the Middle East, making it one of the rapidly growing semiconductor companies in recent years. With well-established management systems and streamlined workflows, Slkor has rapidly enhanced the brand awareness and reputation of its "SLKOR" brand through its outstanding quality and standardized services. Its product range includes three major series: diodes, transistors, and power devices, with recent introductions of new products such as Hall elements and analog devices, expanding its presence in sensors, Risc-v microcontrollers, and other product categories.

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