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Bügelelemente und Flachstecker teilweise mit Faston Anschlüssen



PowerFlex - Power Elements of Würth Elektronik are available in different variations: Clamp elements optional with Faston contacts to the cable connection, Faston flat male tabs for pressing in directly into the PCB, and corner connectors for 90° contacting of PCBs.

The PowerFlex Clamp Elements are designed with flexible press-fit pins.

Application Possibilities

  • Board-to-board over 90° or packaging
  • Wire-to-board screw connection of ring terminals
  • Faston contacts
  • Corner connection 90° Board-to-board


Würth Elektronik PowerFlex 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 pressed in 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
  • Plated through holes of the circuit board must be executed according to our indications
  • PowerFlex Power Elements are designed to be pressed into the circuit board. Soldering is not provided

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. The limiting factor therefore usually lies in the circuit board layout or in the connection of a feed line. Reference values for a pre-dimensioning can be found in the product details.