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Good News: Core Advantages of the 2CL Series Diodes
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Release Date:
2025-12-18
The 2CL series comprises silicon rectifier diodes characterized by high voltage and ultra‑fast reverse recovery, offering a wide range of models to suit diverse high‑voltage applications—from low‑voltage, low‑current circuits to high‑voltage, high‑power systems. They are extensively used in household appliances, industrial equipment, and specialized high‑voltage devices.
Common Models and Specifications
Small-current, high-voltage, standard model
For example, the 2CL02 boasts a reverse repetitive peak voltage of 10,000 V, with an average forward rectified current of only 10 mA; the 2CL71A has a reverse repetitive peak voltage of 8 kV, a forward average rectified current of 5 mA, and a reverse recovery time of 80 ns; and the 2CL2FM offers a reverse breakdown voltage of 20 kV, an average current of 100 mA, and a reverse recovery time of 100 ns. These types of devices are well suited for low‑current, high‑voltage rectification applications.
High-power, high-voltage custom model
Examples include models such as 2CL10KV/1A and 2CL20KV/1A, which offer a forward rectification current of up to 1 A. Certain variants, like 2CL100KV/1A and 2CL200KV/1A, even exceed 100 kV in reverse breakdown voltage. Additionally, the 2CL series includes high‑power versions with currents reaching 50 A; these devices are commonly employed as high‑voltage silicon stacks, well suited for industrial applications involving high voltage and large currents. Furthermore, the series features ultra‑fast recovery models such as 2CL12 and 2CL13, with reverse repetitive peak voltages of 10 kV and 12 kV, respectively, catering to the fast switching requirements of high‑frequency, high‑voltage circuits.
2CL Product Performance
Encapsulation and structural diversity
Small‑size models typically use epoxy resin encapsulation; for example, the 2CL2FM features a compact φ4.5×15 mm package, while the 2CL71A employs a DO‑206 axial lead package for convenient PCB soldering. High‑power models offer screw‑type mounting and custom dimensions, with some incorporating heat‑pipe cooling to accommodate high‑temperature, high‑power applications. Their operating temperature range generally spans −40°C to 120°C, and certain high‑power variants can sustain continuous operation up to 155°C.
Product Features
High‑voltage compatibility plus versatile performance: The series’ key advantage lies in its exceptionally wide reverse‑breakdown voltage range, spanning from several kilovolts to hundreds of kilovolts. Certain models also feature ultra‑fast reverse recovery, with reverse‑recovery times as low as tens to hundreds of nanoseconds, meeting the rapid switching requirements of high‑frequency circuits and minimizing energy losses. Moreover, most variants incorporate avalanche‑breakdown protection and exhibit low reverse leakage current, ensuring reliable operation under high‑voltage conditions.
Differences between models
2CL01
Key specifications: Repetitive peak reverse voltage 8 kV, non-repetitive peak reverse voltage 10 kV; average forward rectified current varies across different sources, with both 5 mA and 10 mA versions available; forward surge current peak 0.5 A; forward voltage 28 V; reverse leakage current at room temperature 2 μA, and 5 μA at 100 °C; reverse recovery time 0.05 μs.
Package and Applications: It is housed in a DO‑206 package, a plastic‑encapsulated axial‑lead type, with a weight of approximately 0.4 grams. It is suitable for rectification in the high‑voltage power supplies of color TVs and CRT monitors, and can also be used in rectification circuits associated with high‑voltage flyback transformers.
2CL02
This series features a typical low‑current, high‑voltage model, with the following key specifications: a repetitive peak reverse voltage of 10 kV, an average forward rectified current of 10 mA, and a forward surge current peak of 0.5 A; forward voltage of 35 V, reverse current as low as 2 μA, and fast switching speeds, making it well suited to meet the rapid rectification requirements of high‑voltage applications.
Package and Applications: It is housed in a DO‑210 package and is commonly used in the high-voltage power supplies of color TVs and CRT monitors. It can also be adapted for low‑current, high‑voltage rectification applications in devices such as negative ion generators and copiers.
2CL03
Key specifications: Two variants are available. The standard version features a reverse repetitive peak voltage of 3 kV and an average forward current of 5 mA. An alternative version in a DO‑210 package offers a reverse peak voltage of up to 12 kV and a forward current of 10 mA. Both versions have a forward surge current rating of 0.5 A; the standard version exhibits a forward voltage drop of 13 V and a reverse recovery time of 100 ns. At room temperature, the reverse leakage current is 2 μA, rising to 5 μA at 100 °C. The operating temperature range spans –40 °C to +100 °C.
Packaging and Applications: Available in T-03 and DO-210 packages, these devices exhibit excellent high‑temperature performance and are well suited for high‑voltage rectification in office equipment and small household appliances.
Axial leads and small standard packages are well suited for the 2CL series models in the medium‑to‑low power range; they are easy to mount and compatible with conventional PCB soldering, making them the most widely used package types in this series.
Bolt‑type packaging is specifically designed for high‑power applications, offering excellent thermal dissipation and high mechanical strength, which facilitates integration with heat‑dissipating structures. For example, the 2CL70A, a high‑power rectifier diode in bolt‑type封装, can be mounted directly onto a heatsink or the metal mounting bracket of the equipment, efficiently removing the substantial heat generated during operation and accommodating its 70 A current rating. It is commonly used in high‑power, high‑voltage rectification circuits.
In addition to the low‑voltage, low‑current 2CL01 and 2CL02, we offer a range of high‑quality models precisely tailored to diverse high‑voltage applications. To keep you promptly informed about the latest product releases, key technological advancements, and real‑world industry use cases, we will continue to update our official channels. We warmly invite you to stay tuned for our most recent news and to join us in seizing new opportunities in the high‑voltage electronics sector.
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Keywords:
2CL Series,Silicon rectifier diode
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