| HVRM15 Low frequency high voltage diode Data Sheet | ||||
| Parameter | Symbol | Unit | Test Conditions | Value |
| Repetitive Peak Backward Voltage | Vrrm | KV | Ta=25℃ Ir=2.0μA | 15 |
| Peak Working Backward Voltage | Vrwm | KV | Ta=25℃ Ir=2.0μA | 15 |
| Average Forward Current | If(AV) | A | 50Hz Half-sine Wave , Resistance load @Tbreak=50℃ | 0.8 |
| Backward Recovery Time | Trr | nS | -- | |
| Surge Forward Current | Ifsm | A | 0.01S @ Half-Sine wave 50Hz | 80 |
| Operating Ambient Temperature | Ta | ℃ | -55～+175 | |
| Storage Temperature | Tstg | ℃ | -55～+150 | |
| Forward Peak Voltage | Vfm | V | ≥18.0 | |
| Backward Peak Current | Irrm1 | μA | @ Ta=25℃ VRM=VRRM | 2.0 |
| Irrm2 | μA | @ Ta=100℃ VRM=VRRM | 20.0 | |
| Absolute Maximum Ratings & Electrical Characteristics | ||||
Where the diode sits does much to decide how well a 15 kV part survives. Immersion in insulating oil is the strongest arrangement and the one we suggest first: the oil surrounds the body, holds back surface discharge and carries heat away from the chip. A sealed insulating gas atmosphere is the next preferred option and is common inside pressurised high-voltage enclosures. If the diode is wrapped or potted as a secondary package, thermal design becomes the limiting factor — the assembly around the diode, rather than the diode alone, sets how much current you can run. In exposed air a small high-voltage body can discharge across its own surface and heat rejection is only average, so fit insulated electrodes at both ends and add forced air where the layout allows. Tell us which environment applies and we will match the coating and the mounting advice to it.
Selection support starts before you order. Our technical team reviews your working voltage, forward current, surge and thermal conditions against the published datasheets, then recommends the closest high-voltage diode and confirms the matching part number. We also guide you through installation and insulation considerations, and help troubleshoot issues during qualification or after delivery. Suly Electronics manufactures these diodes directly, supplies them in bulk, and keeps answering technical questions for the parts you already use.
This is the top of the range: 15 kV blocking with the lowest current rating, 0.8 A average forward current and 80 A surge handling. Lower-voltage members of the family carry more current — up to 2 A at 5 kV and 6 kV — so the choice usually comes down to whether your stage needs maximum standoff or more current. All of them are low frequency high voltage diodes built for 50-60Hz rectification.
Yes. The average forward current is rated on a 50 Hz half-sine wave with a resistive load, which is the duty a bridge rectifier leg sees. Keep in mind that this is a low frequency rectifier and is not intended for high-frequency switching stages, so if your circuit switches well above mains frequency, ask us about a fast recovery part instead.
Vfm is specified as ≥18.0 V, so budget for a forward drop of that order across the diode while it is conducting. That drop becomes heat inside the body, which is why the mounting medium matters as much as the diode itself: oil or a potted assembly carries the heat away, while open-air mounting needs more care. Build the layout around that drop rather than assuming a low forward voltage.
This model uses an axial leaded connection, so it mounts through holes on a rectifier board. Other diodes in the HVRM family use gullwing surface-mount leads, so if your board is laid out for a surface-mount foot, send the footprint and we will confirm which version fits. Lead form is worth checking early, because it is the one detail that cannot be adjusted after the board is made.
Usually, if the ratings and the lead form line up: compare repetitive peak reverse voltage, average forward current, surge current and the physical lead arrangement against your existing part. We are high voltage diode manufacturers, so we can look at the part number you are running and tell you whether this 15 kV model matches it, or whether another member of the range is a closer fit.
The electrical characteristics are quoted at 25 °C, and reverse leakage current rises as temperature climbs, so thermal design is part of the electrical design at this voltage. The chip is built for a wide ambient range and the epoxy molding moves heat away from the junction. In an enclosure or an oil tank, keep the mounting surface and the surrounding medium doing their share of the work.
Here, suitable insulation adhesive materials can be selected based on the different usage situations of engineers.
