Diodes

A comprehensive range of discrete diodes and assemblies, including high-voltage silicon rectifiers, silicon carbide varistors, MOVs and bridge rectifiers, is available to support your power supplies, X-ray systems, inverters, and induction heating applications. With advanced manufacturing, custom packaging, and short lead times, these products meet your high-voltage and high-current requirements while providing reliable performance. Expert assembly and encapsulation services allow replication of competitive or discontinued parts to match your precise specifications.

Discrete High Voltage Diodes

Designed to deliver reliable performance in discrete and high voltage power electronics applications, our diode range includes axial lead high-temperature, low current, power, XOE and surface mount options. Whether you require rugged through-hole devices for harsh environments or compact SMD solutions for dense PCB layouts, you can achieve efficient rectification, circuit protection and fast switching. Built for consistency and durability, these diodes support industrial, automotive and advanced power system designs.

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Encapsulated Rectifier Assemblies

Designed to convert AC to DC in a compact, protected format, encapsulated rectifier assemblies give you a reliable and easy-to-integrate power conversion solution. The sealed construction provides insulation, mechanical strength, and environmental protection, helping you improve durability and simplify installation. Within this category, you can choose from axial lead and flat pack rectifiers, full-wave bridges, high-voltage modules, modular HI-BEL assemblies, and rectifier blocks with multiple mounting options to suit your application.

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High Voltage Diode Assemblies

Designed for demanding high-voltage AC-to-DC conversion, these high-voltage diode assemblies provide reliable rectification where electrical stress, heat, and insulation challenges are critical. Built to withstand high peak inverse voltages and deliver stable, low-ripple DC output, they help you achieve long-term performance in industrial, power conversion, and high-energy applications. Solutions include channel stack rectifiers, column rectifiers, high-voltage full-wave bridges, and spiral rectifier designs.

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High Current Diode Assemblies

Engineered for heavy-duty AC to DC conversion where high current capacity and thermal management matter, high current diode assemblies give you robust, dependable rectification for power-intensive systems. These assemblies are engineered to handle sustained high currents, reduce losses, and manage heat effectively, helping you achieve reliable performance in industrial, power conversion, and energy systems.

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Open Board Rectifier assemblies

Open board rectifier Open board rectifier assemblies deliver precise AC-to-DC conversion in demanding x-ray systems, giving you stable, high-voltage performance where accuracy and consistency are critical. Engineered for controlled electrical characteristics and dependable operation, they help you maintain image quality, reduce ripple, and ensure reliable system performance. Their compact board-level format lets you integrate high-voltage rectification easily into your medical, analytical, or industrial x-ray equipment.

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Octocoupler / Optical Switch Diodes

Optocoupler / optical switch diodes give you safe, reliable signal isolation and fast switching performance, allowing you to transfer signals without a direct electrical connection. This helps you protect sensitive control circuits from high voltage, electrical noise, and transients while maintaining precise logic-level control. Ideal for your power electronics, industrial controls, and high-voltage system interfacing applications.

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If you have certain specification requirements for diodes, please complete a copy of the questionnaire here.

We can also help you with a multiplier design. For specification requirements for voltage multiplier stacks, please complete a copy of the questionnaire here.

Please email your completed questionnaires to sales@ppm.co.uk.

Discrete High Voltage Diodes

	Peak Inverse Voltage	Maximum Average Forward Current	Maximum Forward Voltage Drop	Minimum Reverse Recovery Time	Maximum Surge Current
Axial Lead High Temperature Diodes	3 - 7 kV	25 - 800 mA	3.2 - 25 V	100 ns	3 - 30 A
Axial Lead Low Current Diodes	2 - 40 kV	20 - 75 mA	8 - 54 V	20 ns	0.5 - 3 A
Axial Lead Medium Current Diodes	1 - 35 kV	1.5 - 2500 mA	2 - 52 V	40 ns	8 - 300 A
Surface Mount Diodes	3 - 30 kV	40 - 900 mA	3.2 - 18 V	65 ns	3 - 15 A
Axial Lead XOE Diodes	10 - 20 kV	80 - 100 mA	11.5 - 28.6 V	80 ns	15A

Encapsulated Rectifier Assemblies

	Peak Inverse Voltage	Maximum Average Forward Current	Maximum Forward Voltage Drop	Maximum Leakage Current	Maximum Surge Current
Axial Lead Flat Pack Rectifiers	2.5 - 30 kV	500 - 2000 mA	3.3 - 40 V	0.5 - 5 uA	35 - 150 A
Axial Lead Rectifier Assemblies	1.2 - 150 kV	15 - 1500 mA	2.6 - 275 V	0.2 - 10 uA	3 - 50 A
Full Wave Bridge Rectifiers	2 - 20 kV	0.25 - 5 A	3 - 32 V	0.3 - 5 uA	15 - 150 A
High Voltage Modules	8 - 15 kV	0.275 - 1.1 A	8 - 37.5 V	1 - 10 uA	30 - 80 A
Modular "Hi-Bel" Rectifier Assemblies	1 - 20 kV	0.6 - 10 A	2 - 22 V	0.5 - 10 uA	35 - 400 A
Rectifier Blocks with Insert Mounting	3 - 60 kV	0.5 - 10 A	4.5 - 100 V	0.5 - 500 uA	10 - 950 A
Rectifier Blocks with Mounting Slots	3 - 30 kV	0.5 - 3.6 A	4.5 - 29 V	0.5 - 500 uA	35 - 400 A

High Voltage Diode Assemblies

	Peak Inverse Voltage	Maximum Average Forward Current	Maximum Forward Voltage Drop	Maximum Leakage Current	Maximum Surge Current
Channel Stack Rectifiers	3 - 145 kV	1 - 33 A	3.3 - 208 V	100 uA	150 - 3000 A
Column Rectifiers	24 - 216 kV	3 - 8 A	20 - 180 V	1500 - 5300 uA	370 - 1500 A
High Voltage Full Wave Bridge Rectifiers	4 - 48 kV	4 - 40 A	4 - 48 V	100 uA	400 - 1500 A
Spiral Rectifiers	8 - 56 kV	3.25 - 12 A	8 - 56 V	100 uA	370 - 1500 A

High Current Diode Assemblies

	Peak Inverse Voltage	Maximum Average Output Current	Maximum Forward Voltage Drop	Maximum Leakage Current	Maximum Surge Current
Modular Three-Phase SCR Assemblies	400 - 1200 kV	47 - 160 A	1.49 - 1.95 V	15 - 50 mA	1310 - 5350 A
Rectipoint Silicon Power Rectifiers	0.2 - 1.6 kV	14 - 65 A	1.2 V	5000 uA	370 - 1500 A
Single & Three-Phase High Current Bridges	0.4 - 1.6 kV	70 - 700 A	1.5 V	1000 uA	500 - 10960 A
Water Cooled Assemblies	1 - 2.6 kV	-	-	-	7.5 - 60 kA

Open Board Rectifier Assemblies

	Peak Inverse Voltage Per Leg	Maximum Average Forward Current	Maximum Forward Voltage Drop	Maximum Leakage Current	Maximum Surge Current
X-Ray Board Rectifiers	75 - 600 kV	220 mA	110 - 1050 V	2 uA	10 - 20 A