High Voltage Switches
TTL control input and low power electronics replace expensive heater supplies and drivers found in vacuum tube based solutions. PPM supply a range of 300 standard devices manufactured by Behlke as well as custom designs.
Find the component you are looking for in the table below or call us on +44 (0)1793 784389 and talk to one of our technical sales team.
Extreme rise and fall times
The Behlke solid-state switches have extreme rise and fall times. If your application does not require the full switching speed we suggest you the use the speed limiting option S-TT (rise & fall times slower by approx. 50%) in combination with the input low pass filter option LP. The speed limiting options help to minimise the high frequency difficulties typical for fast high voltage pulse circuits e.g. self-oscillating, self re-triggering, ringing and simplify the EMC design in general.
Using a free-wheeling diode network to prevent reverse currents
Fast solid-state switches are sensitive to reverse currents from unclamped inductive loads. Reverse currents may turn on the slow intrinsic (parasitic) FET diodes in an undefined way and can lead to a catastrophic switch failure. In particular turn-off operation, in combination with high turn-off currents, a fast free-wheeling diode network (fast serial blocking diode + parallel fast free-wheeling diode) should be implemented. This can be integrated with the switching module as option I-FWDN. Please discuss with PPM Power technical support form more information.
For more information about high voltage switches please see choosing a high voltage switch.
Fixed On-Time Switches
On-Time Description | Maximum Voltage | Maximum Current | Switch On-time | |
---|---|---|---|---|
Fixed thyristor/SCR switches | Current Depending | 4 - 150 kV | 1 - 16 kA | > 35 us |
General Purpose Fixed MOSFET Switches | Fixed | 4 - 150 kV | 15 - 200 A | 100 - 300 ns |
Low Impedance MOSFET Switches | Fixed | 0.5 - 40 kV | 70 - 1600 A | 150 ns |
Ultra-Fast MOSFET Switches | Fixed | 3 - 12 kV | 60 - 200 A | 120 - 200 ns |
Low On-Resistance Fixed MOSFET Switches | Fixed | 3 - 24 kV | 60 - 1040 A | 150 - 250 ns |
Variable On-Time Switches
On-Time Description | Maximum Voltage | Maximum Current | Switch On-time | |
---|---|---|---|---|
General Purpose Variable MOSFET Switches | Variable | 0.5 - 36 kV | 12 - 640 A | > 50 ns |
High di/dt MOSFET Switches | Variable | 3 - 36 kV | 200 - 3200 A | > 300 ns |
Low Capacitance MOSFET Switches | Variable | 3 - 140 kV | 30 - 800 A | > 60 ns |
Low On-Resistance Variable MOSFET Switches | Variable | 0.5 - 21.6 kV | 125 - 3750 A | > 150 ns |
AC MOSFET Switches | Variable | 1.2 - 36 kV | 12 - 130 A | > 50 ns |
General Purpose IGBT Switches | Variable | 3 - 36 kV | 800 - 9600 A | > 0.2 us |
Variable Thyristor/MCT Switches | Variable | 4 - 18 kV | 3 kA | > 1 us |
Push-Pull MOSFET Switches | Variable | 2x 1.2 - 140 kV | 2x 12 - 200 A | > 50 ns |
Pulser Switches | Variable | (2x) 3 - 12 kV | (2x) 15 - 80 A | > 50 ns |
Pulsed Power Switch Assemblies
On-Time Description | Maximum Voltage | Maximum Current | Current Rise Rate | |
---|---|---|---|---|
Pulsed Power Stacks | Variable | 30 kV | 20 - 50 kA | 10 - 30 kA/us |
Showing 1–12 of 15 results
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AC MOSFET Switches
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Fixed Thyristor/SCR Switches
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General Purpose Fixed MOSFET Switches
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General Purpose IGBT Switches
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General Purpose Variable MOSFET Switches
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High di/dt MOSFET Switches
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Low Capacitance MOSFET Switches
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Low Impedance MOSFET Switches
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Low On-Resistance Fixed MOSFET Switches
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Low On-Resistance Variable MOSFET Switches
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Pulsed Power Stacks
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Pulser Switches
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