Semikron Electronic Components
Key Takeaways
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A factory drive can outlive its parts list, but it cannot run without the right Semikron electronic components. These devices convert and control electrical power in motor drives, industrial controls, rectifiers, and power supplies. When one fails, MRO and repair teams need the correct part number or an approved equivalent.
Founded in Nuremberg in 1951, Semikron built power devices for equipment designed to run for years. Its original portfolio covered systems rated from about 2 kW to 10 MW.
The company combined with Danfoss Silicon Power in 2022, but Semikron-marked parts remain in older assemblies. Semikron’s history provides the background.
At Summit Electronics, we help OEMs, MROs, and repair buyers source current, allocated, hard-to-find, and discontinued parts. As an electronic parts supplier with more than 2 million parts in stock and a worldwide network, we work from your exact requirements.
Our company history began in 1961 as Thor Electronics. More than six decades of sourcing work have given our team deep knowledge of current and obsolete part numbers, along with supplier relationships that help us locate exact components for production and repair.
What Semikron Components Do
Semikron built power semiconductors for switching, controlling, and rectifying high electrical loads. Its diodes direct current flow, while thyristors provide controlled power switching in equipment such as DC drives and motor starters. IGBT power modules switch power in inverters and motor controls. Bridge rectifiers convert AC input to DC, and gate drivers send control signals to power switches.
These devices serve industrial automation, renewable energy equipment, transportation, UPS systems, and battery charging. The device type alone does not identify a usable replacement. Circuit configuration and physical connections matter.
Semikron Product Families
These are family identifiers, not a complete cross-reference. For example, SKD appears on products with different housings and ratings. Match the full printed number to the datasheet and equipment record before ordering.
SEMIPACK includes diode and thyristor modules with part prefixes such as SKKD, SKKT, and SKKH. These parts serve rectifiers, DC motor controls, and soft starters. SEMIPONT includes compact rectifier assemblies identified by SKB and SKD prefixes. You’ll find them in power supplies, drive inputs, and chargers.
SEMITRANS and SEMITOP include IGBT modules used in inverters, motor controls, and UPS systems. SKiM, SKiiP, and MiniSKiiP cover power module formats for drives and higher-power conversion. SKHI and SKYPER identify gate drivers and control hardware. For any family, use the complete part number and datasheet to check ratings, connections, and fit.
Why the Exact Part Number Matters
Semikron’s SEMIPACK technical guide dates the first insulated module to 1974. It documents a family spanning 600 to 2,200 V and up to 1,360 A. Those figures describe the family, not every device in it.
A suffix can change compatibility. The guide states that the “B” versions of certain SKKT modules rearrange the gate and auxiliary-cathode connectors. A part with the same current and voltage ratings can still require different wiring. Check these details before accepting an equivalent:
- Complete manufacturer number and suffix
- Voltage, current, and surge ratings
- Circuit diagram, terminal layout, and gate connections
- Housing dimensions, mounting, and heat transfer
- Condition, markings, lot details, and supporting documents
For power-control repairs, compare the switching and gate requirements. Legacy sourcing starts with the exact package and any approved alternate.
Current Production, Legacy Stock, and Discontinued Parts
An old Semikron number does not automatically mean production has ended. Confirm the status of each exact part. The manufacturer marks SKKH 250/12 E as discontinued, while other parts from the broader product family remain in production. A family name alone cannot establish availability.
When you need obsolete electronic components, original stock can preserve an approved design. A proposed substitute needs engineering review for electrical behavior, fit, and thermal performance. At Summit Electronics, we start with the complete part number and your requirements. Our counterfeit part checks explain why markings, condition, and source records matter when older stock changes hands.
Source Semikron electronic components through Summit
Send Summit Electronics the complete part number, quantity, equipment model, and required delivery date. Include a label photo or datasheet if the marking is unclear. As your electronic parts supplier, we can search our stocked inventory and worldwide network for the specified part.
If the original is unavailable, tell us if your engineering team permits an equivalent. We help you source obsolete electronic components and current parts with clear part details, responsive service, and competitive pricing. Contact our electronic parts supplier team to request a quote.
Click here or call us toll-free at (800) 226-6960.
