QLC - Miniature Zero Insertion Force

ITT expands its DL Family of Connectors with the Miniature QLC device to meet size, reliability, and mating requirements for Portable Medical Equipment. Similar to the DL Series connectors, the QLC connector is highly reliable, easily assembled during harnessing and features a high pin count, 260 contacts in PC Board-mount style. The receptacle is available in both standard solder tail and press-fit contacts. The QLC employs rugged nickel-plated aluminum housing and features a minimum rated life of 20,000 mating cycles with no performance loss. The interface of the QLC connector utilizes EMI springs and a shield-locking mechanism to ensure uniform mating pressure around the perimeter of the mated connector, creating an EMI/RFI shield.  With the current technology advances requiring smaller connection systems, ITT reduced the size from the current DL by more than 60% with the same number of contacts.


  • Over 20K mating cycles
  • 260 & 440 pin configuration available
  • Fully intermateable design
  • Solder to PCB through hole or press-fit factory termination

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DL Series ZIF Connectors for Test & Measurement - Technical Article


DL Series ZIF Connectors Catalog


Medical Product Selection Guide


DL Series Sell Sheet


QLC Solderless Plug Sell Sheet


Hertz Stress Whitepaper

Product Specification


Shell Style Panel, PCB or cable mounted
Durability 20000 Mating Cycles
Power & Signal In Same Layout No
Contact Style / Termination Stamped PCB, Solder and Press-fit


Shell Zinc Alloy
Shell Plating Nickel
Insulator Glass filled thermoplastic, UL 94V-1
Contact Copper-Alloy
Contact Plating Gold over Nickel & Tin


Operating Voltage 100 VAC
Current Rating 0.5 Amp
Number of Signal Contacts (Min/Max) 260
Gauge Wire Size N/A


Sealing N/A
Operation Temperature -55°C to +85°C