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Zweiteilige Powerelemente, kein Stress der Leiterplatte (patentiert), konfigurierbar



Two-piece Power Elements are a Würth Elektronik patented solution for through screw technologies on circuit boards. These high current terminal blocks and spacers enable a durable and reliable connection and mounting on the PCB without stressing it. Depending on the pin arrangement and the layout, currents of up to 500 ampere are possible. The assembly method allows individual adaptions regarding design and dimensions. That is the reason why Power Elements perfectly qualify as connecting elements for fuses, retainers/fasteners and IGBTs.

Application Possibilities

  • Board-to-board stackable
  • Wire-to-board screw connection of ring terminals
  • Electro mechanics, through screw technology, spacers
  • Retainers/fastenings of switches, fuses, IGBTs
  • Any combination of all these and much more


Würth Elektronik PowerTwo Power Elements are pressed in into the circuit board. Soldering is not necessary. Therefore, the PCBs are not exposed to temperature stress. This processing step easily blends in to the processing chain and is highly cost efficient. With the aid of the corresponding Press Fit tools, several Power Elements can be Press Fit simultaneously.

  • For assembling prototypes, no special equipment is needed for pressing in, a simple toggle press is sufficient
  • The circuit board needs support during the pressing procedure
  • The pressing force must be executed in a 90° angle to the circuit board
  • After the pressing process the pins should stand out of the drilled hole (ca. 0.2 - 0.5 mm)
  • Plated through holes of the circuit board must be executed according to our indications
  • PowerTwo high current terminal blocks and spacers are manufactured for pressing, soldering is not intended
Schematic view of the pressing process

Circuit Board Design

For the massive Press Fit Technology the PCBs are to be finished according to the Würth Elektronik ICS Press Fit specifications (see product details). Particular attention should be paid to the drill diameter and the copper thickness. Due to the different layer thicknesses of Hot Air Levelling compared to chemical surfaces, the final diameters vary.


The torques indicated in the table are based on DIN 267 part 25. Different material combinationsor different thread lengths of the connectors are not regarded here.

Torque values for brass
Thread size M 2,5 M 3 M 4 M 5 M 6 M 8 M 10 M 12
(Nm) 0,3 0,5 1,2 2,2 3,9 9,0 17,0 35,0

Current Carrying Capacity

The current carrying capacity of a Press Fit connection needs to be seen in the context of the overall system. The Press Fit zone has a very low electrical contact resistance of 100 - 200 μOhm. The limiting factor therefore usually lies in the circuit board layout or in the connection of a feed line.

Data sheet-Download

In the product data sheet you will find all the information about PowerTwo in PDF format.