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Diotec Semiconductor AG

Name: Diotec Semiconductor AG
Address: KreuzmattenStr. 4, Heitersheim, 79423, DE
Telephone: +49763452660
Price range: $

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Deutschland
Heitersheim
Diotec Semiconductor AG

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Semiconductors made in Germany

29/10/2026

A variable frequency drive turns a three-phase AC supply into a motor speed controller.

The drive inverter does the work.

It switches a high-voltage DC bus through an IGBT bridge, feeding a variable-frequency three-phase output back to the motor.

That switching has to be fast and clean.

The IGBT also has to survive 1,350 V on the bus.

Diotec’s DIW040F135 is a 40 A, 1,350 V IGBT in a TO-247 package.

It carries an integrated freewheeling diode and switches between 80 and 100 kHz.

Engineers first demonstrated three-phase AC at the 1891 Frankfurt Exhibition, moving power 176 km from Lauffen.

Every variable frequency drive since has worked on the same architecture.

Inside the drive, the IGBT is what makes the frequency variable.

28/10/2026

Social and environmental responsibility have become vital considerations in business relationships.

But how can companies evaluate whether their collaborators uphold these standards?

This is where sustainability analysis through ESG score, such as EcoVadis take effect.

ESG stands for Environmental, Social and Governance Data and rates how a company performs in terms of ethical and environmental subjects.

If you are curious to learn more about Diotec’s score, take a look at EcoVadis and Integrity Next:

https://ecovadis.com/
https://www.integritynext.com/

EcoVadis is a French platform that helps to guide companies to a positive impact for the environment by scoring their sent-in company data.

Integrity Next is a German scoring platform that inspires companies to “drive positive environmental and social impact throughout their supply chains”.

Come over and experience Diotec’s impact on company ethics and the environment!

27/10/2026

For decades, driving a high-power BLDC motor meant paralleling two or three silicon MOSFETs together.

That approach works, but each additional device adds complexity.

The gates all have to switch in sync.

The PCB layout has to be nearly symmetrical.

A 1 nH difference in source inductance between devices can create a 1 V voltage mismatch during switching.

Snubber circuits become necessary to suppress stray inductances.

Current must share evenly, or thermal runaway becomes a real risk.

A single 1200 V SiC MOSFET with sufficient current capability removes most of that complexity.

Diotec’s DIW120SIC028 is one such part.

28 mΩ maximum on-resistance, 300 A peak drain current, 517 W power dissipation, in a standard TO-247 3-lead package.

For BLDC motor drivers, EV charging systems, solar inverters, UPS and PFC circuits where the design previously called for paralleled silicon, a single device now does the job.

22/10/2026

Industrial control panels across the world use the same German-designed mounting rail.

The specification standardises a snap-on metal strip, usually a 35 mm top-hat profile.

Any component built to that profile fits the same mounting, from any manufacturer as the international version is IEC 60715.

Circuit breakers, power supplies, relays, PLCs and terminal blocks all mount on the same shape of rail, from the same original German concept.

Automation standards have been rewritten.

Communication protocols have been replaced.

The mechanical interface that holds everything in place has not.

Diotec makes discrete semiconductors for the modules that sit on it.

Industrial power supplies, motor drives, solar inverters, EV charging electronics.

The rail is standardised. The silicon inside the modules is not.

20/10/2026

A 12 volt car line can briefly jump to 87 volts.

That spike has a name. Load dump.

It happens when the alternator is still generating power and the battery connection suddenly breaks.

The number comes from ISO 7637-2, the automotive standard.

Modern vehicles clamp this to around 35 V with centralised suppression.

Older ones do not.

Either way, the MOSFET switching the headlight circuit has to survive it.

The DI009N10PQ-AQ is rated to 100 V, 9 A continuous, 103 mΩ typical on-resistance, 175°C max junction temperature.

PowerQFN 5x6 package. AEC-Q101 qualified.

In automotive power design, headroom is not a nice-to-have.

It is where the design starts.

15/10/2026

Two transistors of opposite polarity in one package.

While any circuit that handles both halves of a signal needs them.

The NPN side conducts when current flows one way, the PNP side when it flows the other.

For decades, designers have placed them as two separate parts.

The BC817BPN-AQ puts both in a single SOT-26 package.

45 V. 500 mA. AEC-Q101 qualified.

For motor control circuits that drive current in both directions, and signal amplification circuits that handle both halves of a waveform.

13/10/2026

Before 1866, generating electricity at any real scale meant lifting a permanent magnet the size of a person.

Then a German engineer worked out that a generator could feed itself.

A small part of the current it produced would build an electromagnet far stronger than any permanent magnet.

Within twenty years, cities across Europe were electrified.

Nearly every piece of electrical infrastructure in the world today traces back to that moment.

The job is still the same.

Something turns, electricity travels, and at the other end it gets converted into whatever a device actually needs.

Every one of those stages runs on discrete semiconductors. Rectifiers. MOSFETs. TVS diodes.

Diotec makes those components for industrial power, renewables, and consumer power conversion.

12/10/2026

Wide Bandgap 2026 | The Future of Power Is Now!

Diotec was pleased to be one of the exhibitors at the third Wide Bandgap conference in Verona on October 6–7!

Our Field Application Engineers represented Diotec at the event and enjoyed great conversations with customers, partners, and industry colleagues about SiC and GaN devices, application challenges, and the future of power electronics.

The two days were packed with opportunities for both suppliers and partners with technical presentations, sessions and exhibition time with customers.

A big thank you to for the excellent organization and for bringing the power electronics community together.

We look forward to seeing you again next year!

12/10/2026

Munich is calling | See you at electronica!

We are excited to see you at , the world’s leading trade fair and conference for electronics! 🚀

Visit us at our booth and discover our latest solutions in discrete semiconductors.

Explore our newest products, meet our team in person, and talk to us about your applications, challenges, and upcoming projects.

📅 10–13 November 2026
📍 Trade Fair Center Messe München
🏢 Hall C3 | Booth C3.359

Our visionary demoboards range from PFC Boards, HV Isolated Flyback Converters, and BMS to Automotive USB Power Delivery.

German Engineering. Global Impact.

Whether you're developing solutions for industrial electronics, automotive applications, e-mobility, artificial intelligence (AI) and data center power supplies, or smart home and factory automation systems, we are looking forward to connect with you!

Discuss with our competent team to find solutions tailored to your design ideas.

08/10/2026

A modern single-voltage AC-DC power adapter under 49 W is allowed to waste 100 milliwatts when nothing is plugged into it.

That number is EU law and it has been in force since 2020.

The next tightening is already set, dropping the limit to 75 mW from 2028.

The regulation does not stop at idle. It also sets a minimum average efficiency across every load point in between.

Clearing both limits is a MOSFET decision as much as a controller decision.

Every switching cycle, a MOSFET burns a small amount of energy just charging its own gate capacitance. At every active load point, that loss adds up.

Which is why low gate charge now sits at the top of a designer's spec list, alongside on-resistance.

These two decide how much of an adapter's input reaches the load, and how much is wasted in the switching itself.

Diotec's DID3A2N65 is a 650 V, 3.2 A N-channel MOSFET built for exactly this pressure.

Low gate charge, low on-state resistance, fast switching, in a TO-251/I-PAK package sized for the compact adapters modern regulation encourages.

Power adaptors. Switching power supplies. High-speed switching. Relay drivers.

Adresse

KreuzmattenStr. 4
Heitersheim
79423

Öffnungszeiten

Montag	07:45 - 16:30
Dienstag	07:45 - 16:30
Mittwoch	07:45 - 16:30
Donnerstag	07:45 - 16:30
Freitag	07:45 - 16:30

Telefon

+49763452660

Website

https://diotec.com/

Benachrichtigungen

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