CL04 Series Power Frequency Rectifier Diode
CL04-15 Low Frequency High Voltage Diode for Rectifier Circuit Applications
CL04-15 is a 15 kV, 500 mA low frequency high voltage diode for rectifier circuits, pulsed power support stages, test benches, voltage multiplier assemblies, and industrial power supply modules that require stable reverse voltage handling.
For engineering teams comparing high voltage diodes, this page summarizes the practical application fit, electrical limits, insulation considerations, and sourcing details for CL04-15 evaluation.
HVDIODE supports buyers who need repeatable component supply, sample review, documentation checks, and communication with a supplier experienced in high voltage diode manufacture for research, industrial, and power electronics projects.

Application Media and Technical Specifications
Description
The CL04-15 uses axial leaded connection, high thermal conductivity epoxy compound molding, optional quick connect terminals, and high temperature resistant chip protective glue. It is intended for low frequency high voltage rectifier work where the diode body, terminal spacing, insulation medium, and thermal path must be reviewed together before system approval.
Product Specifications
| Parameter | Symbol | Condition | Value |
|---|---|---|---|
| Repetitive Peak Backward Voltage | Vrrm | Ta = 25 C, Ir = 2.0 uA | 15 kV |
| Peak Working Backward Voltage | Vrwm | Ta = 25 C, Ir = 2.0 uA | 15 kV |
| Average Forward Current | If(AV) | 50 Hz half-sine wave, resistance load, Tbreak = 50 C | 500 mA |
| Backward Recovery Time | Trr | Product datasheet field | Not specified |
| Surge Forward Current | Ifsm | 0.01 s half-sine wave, 50 Hz | 30 A |
| Junction Temperature | Ta | Maximum range | -40 C to +150 C |
| Storage Temperature | Tstg | Storage condition range | -40 C to +125 C |
| Forward Peak Voltage | Vfm | Product datasheet field | >= 15.0 V |
| Backward Peak Current | Irrm1 | Ta = 25 C, VRM = VRRM | 2 uA |
| Backward Peak Current | Irrm2 | Ta = 100 C, VRM = VRRM | 20.0 uA |
Core Supply Advantages
Application Matching
Selection can be reviewed against waveform, insulation medium, terminal style, and module layout so the diode fits the real operating environment.
Stable Batch Review
Electrical ratings, body structure, and packaging expectations can be checked before sample approval and repeated purchasing.
Engineering Communication
Buyers can send voltage, current, frequency, thermal, and assembly data for practical review before confirming the CL04-15 supply path.
Technical Reading for Diode Selection
Applications of Low Frequency High Voltage Diodes in Pulsed Power Systems
A useful reference for buyers reviewing how low frequency high voltage diodes support rectification, charge paths, and transient handling in pulsed power equipment.
Read ArticleUnderstanding Thermal and Electrical Stability in High Voltage Diode Components
This article supports review of thermal paths, leakage current behavior, insulation stress, and component consistency in high voltage diode projects.
Read ArticleOverview of High Voltage Diode Product Lines for System Integrators
System integrators can use this product line overview to compare power frequency, fast recovery, pulsed, bridge, and stack options around CL04-15 requirements.
Read ArticleVerified Procurement Feedback
Five-star rating
"The CL04-15 sample review was clear enough for our rectifier module evaluation. The datasheet ratings and terminal notes helped us align the part with our insulation plan."
Senior Power Electronics Engineer
Germany, industrial power supply integrator
Five-star rating
"We needed a low frequency high voltage diode for bench testing and small-batch equipment builds. The 15 kV rating and application guidance made the internal review faster."
Procurement Manager
United States, laboratory equipment supplier
Five-star rating
"For pulsed circuit prototypes, we look for stable sourcing and practical answers on insulation and surge current. CL04-15 gave our team a useful starting point."
R&D Project Lead
South Korea, pulsed power research team
CL04-15 Technical FAQ
What circuit roles suit the CL04-15 low frequency high voltage diode?
The CL04-15 is suited for low frequency rectifier stages, pulsed power auxiliary circuits, laboratory test benches, voltage multiplier assemblies, and industrial power supply modules that need a 15 kV reverse voltage rating with a 500 mA average forward current rating.
How should engineers review the 15 kV reverse voltage rating?
The 15 kV Vrrm and 15 kV Vrwm ratings should be checked against the circuit peak reverse voltage, transient margin, insulation medium, creepage distance, and expected operating temperature. Engineers should validate the final circuit under the real waveform and enclosure conditions.
What does the 30 A surge forward current rating mean for pulsed systems?
The 30 A Ifsm value is specified for a 0.01 second half-sine condition at 50 Hz. It helps engineers judge short transient tolerance, but it should not be treated as a continuous current rating. Pulse width, repetition rate, cooling path, and junction temperature still need project-level review.
Why does the CL04-15 use epoxy molding and high temperature chip protection?
The high thermal conductivity epoxy molding and high temperature resistant chip protective glue support insulation, heat transfer, and mechanical stability around the diode body. These features are useful where rectifier modules face voltage stress, thermal cycling, and assembly handling.
Can the CL04-15 be used in exposed air?
High voltage diode use in exposed air requires careful insulation design, spacing, terminal protection, and possible air cooling. The product guidance also mentions insulating oil, insulating gases, and secondary packaging as application environments for high voltage diode selection.
What information should be prepared before requesting a CL04-15 quotation?
Useful request details include target reverse voltage, forward current, waveform, pulse or mains frequency, enclosure medium, ambient temperature, connection style, quantity range, sample evaluation needs, and any special terminal or packing requirements.

