Skip to content
Technical Assistance > Contact Technology > Spring-loaded contacts

NEWS

[June 2011] 49th Paris Air Show
More >>

 

[January 2010] ARROW CENTRAL EUROPE has been appointed as New Distributor Partner.
More >>

 

[January 2010] New Sales and Marketing Director
More >>

 

[November 2009] 74th China Electronics Fair
More >>

 

[October 2009] PRECI-DIP SA is proud to announce that it has been JETRO Certified.
More >>

 

[September 2009] 3rd Worldwide Distributors Days at Delémont
More >>

 

[July 2009] Anwenderkongress Steckverbinder 2009 The 3rd Anwenderkongress Steckverbinder took place from June 30th till July 1st, 2009 in Würzburg, Germany.
More >>

 

[June 2009] Paris Air Show Le Bourget PRECI-DIP chose PARIS AIR SHOW LE BOURGET to present its new line of MIL contact AS39029 using our new clip Eagle Grip.
More >>

 

[June 2009] MD&M East event The East Coast's Largest Event for Design, Manufacturing and Packaging...
More >>

 

[June 2009] Arrow Multi Solutions Paris ARROW Multi Solutions Paris took place on June 4th, 2009 in the Conference hall of Versailles.
More >>

 

SPRING-LOADED CONTACTS
Spring-loaded contacts were initially designed since 1995 for mobile phones. The application requires miniature, reliable, contacts with very high mating cycles count at low cost.
The basic design of spring-loaded contact with hollow piston consists of a contact body or barrel, a contact member or piston and an helical compression spring. The piston is retained in the barrel by a crimp.
The electrical contact is established by pressure between the piston and a fixed, flat, conducting area of the opposite part.

Based on this initial model, new contacts with improved characteristics were designed:
  • Low resistance spring-loaded contacts with shaped piston
  • High-reliable contacts with clip. This contact design is protected by international patents
MAIN ADVANTAGES
  • Very long life time
  • Many types of terminations available (see page Introduction)
  • Small dimensions for use in applications with limited space (min. contact height 3 mm, min. contact diameter 1 mm)
  • Very good resistance to shocks and vibrations
  • Best adapted where conventional connection solutions cannot satisfy the application requirements:
      • In case of important positioning tolerances of the connectors parts
      For compensation of errors of parallelism and flatness
      To make connection with pivoting, rotating or non parallel mating movement
      For connections with sliding mating action (push and lock)
 
HOLLOW PISTON
+ BARREL
SHAPE PISTON
+ BARREL
CLIP
COAXIAL DESIGN
CLIP
IN-LINE DESIGN
  HOLLOW PISTON + BARREL SHAPE PISTON + BARREL CLIP COAXIAL DESIGN CLIP IN-LINE DESIGN
      patented patented
MECHANICAL
Min. diameter
 1.8 mm 1.5 mm 1.8 mm 1.0 mm
Min. initial height
 3 mm 6 mm 5 mm 10 mm
Travel / height ratio
 Max. 0.3 Max. 0.2 Max. 0.2 Max. 0.15
Max. travel (stroke)
 2 mm 2 mm 1.5 mm 1.5 mm
Min. initial spring force
 0.2 N 0.2 N 0.2 N 0.2 N
Mechanical life
 Min. 100'000 cycles Min. 50'000 cycles Min. 40'000 cycles Min. 40'000 cycles
 
ELECTRICAL
Contact resistance
 Max. 15 mΩ* Max. 10 mΩ* Max. 20 mΩ Max. 20 mΩ
Max. operating current
 3.5 A cont.** / 7 A peak 2 A cont.** / 4 A peak

* Static measurement in halfway position of piston travel.
** Above max. current values are for single contacts in free air and for 10°C temperature rise.

<< Back

  Last update: 21 December 2006
Powered by Ivimédia