Product Detail
- Product: high voltage diode.
- Voltage: 600V-1200V.
- Models: 1N4007, UF4007.
- Use case: PFC circuits.
Product Description
This high voltage diode page covers the 600V to 1200V range used in mains-connected rectifiers, PFC boost paths, high-bus supplies and industrial power boards. You can compare 1N4007, 1N5408, UF4007, HER108 and 1200V power diodes by reverse voltage, current, recovery speed, surge rating, package and heat path. In this range, a part may need to handle both line stress and switching behavior. Lian Tuo helps you separate standard, fast, ultrafast and power-package choices before the sample list is fixed. That keeps voltage margin and switching behavior reviewed together.
Our High Voltage Diode Options
| 1N4007 High Voltage Diode | 1A 1000V standard rectifier direction for compact low-frequency mains boards. |
| 1N5408 High Voltage Diode | 3A axial choice for stronger line-frequency rectifier and charger positions. |
| UF4007 High Voltage Diode | Ultrafast 1000V option for compact switching and snubber-related paths. |
| HER108 High Voltage Diode | High-efficiency fast-recovery route for 1A class converter positions. |
| 1200V Power High Voltage Diode | Power-package direction for bus rails needing stronger current and heat handling. |
Feature Box
- Mains Margin600V-1200V ratings support high-bus rectifier designs.
- Recovery ControlStandard, fast and ultrafast behavior can be matched.
- Current Range1A axial to power-package options can be compared.
- Thermal ReviewHeat path is checked with current and waveform.
Respect The Peak Bus
A high voltage diode in a mains-connected circuit must handle peak reverse voltage, spikes and tolerance on the DC bus. Choosing only by nominal AC input can leave too little margin. Share the real bus voltage and surge condition before samples are approved. It also helps avoid treating every 1000V diode as the same part.
Do Not Ignore Recovery
A 1N4007 may fit low-frequency rectification, but PFC or switching paths often need faster recovery. The high voltage diode recovery behavior affects heat, EMI and switch stress. Match the diode to waveform speed before deciding that voltage rating is enough. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
Scale Current And Package
1A axial parts, 3A axial parts and power packages solve different heat problems. A high voltage diode package should follow RMS current, surge current and available copper or heat-sink path. A stronger voltage number does not replace thermal review. It also helps avoid treating every 1000V diode as the same part.
Prepare Equivalent Notes
Purchasing may see 600V, 800V, 1000V and 1200V options with similar names. Lian Tuo can compare high voltage diode equivalents by voltage, recovery, package and current so replacement notes stay clear for engineering approval. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
Vertical Product Applications
Mains Rectifier Boards
Use a high voltage diode in mains rectifier boards when the design needs 600V to 1200V blocking margin. Standard recovery may be suitable at line frequency if surge current and package temperature are also checked. It also helps avoid treating every 1000V diode as the same part. That keeps voltage margin and switching behavior reviewed together.
PFC Boost Stages
PFC boost stages need a high voltage diode with recovery behavior matched to switching stress. Fast, ultrafast or power-package directions should be reviewed with boost frequency, current and heat path before sampling. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
Industrial High-Bus Supplies
Industrial high-bus supplies can run warm and see line transients. A high voltage diode should be selected by voltage margin, current duty, package body and cooling method so the supply remains stable in service. It also helps avoid treating every 1000V diode as the same part. That keeps voltage margin and switching behavior reviewed together.
FAQ
How do I choose a high voltage diode?
Start with peak reverse voltage, forward current, surge rating, recovery speed, package and operating temperature. Mains and switching circuits need different diode behavior even when voltage ratings look similar. It also helps avoid treating every 1000V diode as the same part.
Can 1N4007 be used in switching supplies?
Only in low-speed positions. For high-frequency switching, UF4007, HER108 or another faster high voltage diode may be more suitable because recovery loss and noise become important. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
When should I use a 1200V diode?
Use 1200V when the bus, surge or design margin requires more than 1000V parts can provide. Current, package and recovery speed still need review before choosing the exact model. It also helps avoid treating every 1000V diode as the same part.
What data helps quote 600V-1200V diodes?
Send reverse voltage, forward current, recovery requirement, circuit frequency, surge condition, package, old marking and quantity. A schematic note helps separate rectifier, clamp and PFC positions. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
Can 1N5408 replace 1N4007?
Not directly in every board. 1N5408 has higher current but a larger package. Lead spacing, body size, surge need and thermal condition must be checked before using it as a replacement. It also helps avoid treating every 1000V diode as the same part.
Does high voltage diode leakage matter?
Yes. Leakage can influence standby loss, heat and sensing circuits, especially at higher temperature. Glass passivated or suitable high-voltage families may help where stable blocking is important. That keeps voltage margin and switching behavior reviewed together. It also helps avoid treating every 1000V diode as the same part.
Can Lian Tuo support high voltage equivalents?
Yes. We can compare 1N4007, 1N5408, UF4007, HER108 and 1200V high voltage diode options by voltage, current, recovery and package. It also helps avoid treating every 1000V diode as the same part. That keeps voltage margin and switching behavior reviewed together.
