Varicon

®

Introduction

AVX’s Varicon product range is available as two-piece input /output and board level connectors (intermateable plugs and receptacles). Varicon contacts are also available in strips, on disposable carriers, ready for staking to p.c. cards. They all use the famous, fork-like Varicon
® (fixed) or Varilok
® (insertable / removable) hermaphroditic contact design.

VARICON DESIGN ADVANTAGES SHOCK AND VIBRATION RESISTANCE

AVX’s hermaphroditic Varicon contact utilizes a fork-like design incorporating four large mating surfaces that are coined to achieve exceptional hardness and smoothness. The mating surfaces are wedged together by the spring-like design of the contact and by the innate properties of the contact material. The Varicon contact has proven its reliabil- ity in innumerable applications and with over one-million con- tacts being produced daily, billions of successful, trouble-free operating hours have been logged. Should external forces cause any decrease in contact pres- sure between two of the four mating surfaces, it is automat- ically compensated by redistributing the contact pressure between the other two mating surfaces.

ECONOMY

Varicon contacts are stamped from sheet stock instead of screw-machined. Consequently, this industrial production method not only increases the production capacity but decreases pro- duction cost as there is little waste.

FEATURES

• Four intimate contact areas, electrically parallel•High current carrying capability, excellent heat dissipation•Self-cleaning, wiping action burnishes contacting surfacesreducing constrictive resistance•Low contact resistance 3 to 4 milliohms•Stable in vibration and adverse environments•High contact normal pressure achieved at low stresslevels

VERSATILITY

The Varicon concept can be used in a card-mounted plug that mates with a receptacle, or Varicon contacts can be staked directly to a pc board and soldered into place. This latter method eliminates the need for a conventional plug reducing the cost of the connection system while retaining the proven reliability of the Varicon interconnection.

CONTACT TYPES

Two basic sizes of our Varicon contact are available: stan- dard and miniature Varicon. And each size has two major variations: the fixed Varicon contact and the Varilok insertable / removable version. The standard size is rated at 8 amps and has a withdrawal force range of 2 to 16 ounces per contact. The miniature size is specifically for high densi- ty applications and is rated at 5 amps with a withdrawal force of 2 to 8 ounces per contact. (For exact specifications, check the individual series listing.)

HIGH RELIABILITY

The mating surfaces provide a gas-tight connection and resists corrosion caused by adverse environments. This seal is made possible by the spring-like properties of the Varicon contact and by the smoothness of the coined mating surfaces. After being mated for years, the contacts still retain clean, unoxidized mating surfaces.

LOW RESISTANCE

Because of the spring-like properties of the Varicon contact, both sides of the contact are always under considerable pressure when mated. Their sliding and wiping action burnishes the surfaces in a self-cleaning action reducing any constrictive resistance. The low contact resistance remains a permanent feature of the Varicon contact even after thou- sands of mating and unmating cycles.
Miniature Varicon ®

HIGH CURRENT CAPACITY

The low contact resistance contributes substantially to Varicon’s high current-carrying capacitor. Also, its heat-dissi- pating characteristics are enhanced by its flat configuration.
Standard Varicon ®

3