Winchester Electronics Presents... QMA Subminiature RF Connectors RoHS Compliant TM Winchester manufactures the QMA series to utilize a quick connect mating system that does not require special tooling for mating/unmating. The QMA connector system was designed around the internal construction of an SMA, which allows the QMA to have excellent electrical/power characteristics. Winchester’s QMA is fully interchangeable with any other QMA connector and is equal in performance. The mechanical design of the QMA centers around a snap-on mating versus a threaded coupling like the SMA. This allows denser packaging and reduced installation labor. The QMA has an added benefit of being able to rotate 360° after mating, allowing flexibility during installation with no change in performance. Winchester’s QMA connectors have excellent PIM performance up to -120dBc. The QMA Plugs can be enhanced with an internal grounding feature, which will increase the PIM performance up to -135 dBc. We can also offer an internal seal for weatherproof applications. Product Benefits: Ø Snap-on interface for easy installation. Ø When mated, the connectors can rotate 360 degrees. Ø Electrical performance similar to an SMA up to 6 GHz. Ø Excellent PIM performance to -120dBc (enhanced version to -135 dBc). Ø Optional weatherproofing seal. July 2011 www.winchesterelectronics.com Electrical Mechanical Nominal Impedance: 50 Ohms Operating Frequency: DC to 6.0 GHz VSWR: Straight Right Angle 1.15 MAX 1.20 MAX Return Loss (dB MIN): Straight Right Angle -23 -20.8 Insertion Loss (dB MAX): .25 Insulation Resistance: 5,000 Megohms MIN Dielectric Withstanding Voltage (VRMSMIN): RG316, RD316, 188, 174, LMR100 or Equiv. 750 RG142, 55, 58, 141, 223, 303, 400, LMR195 or Equiv. 1000 .085 (RG405/U) Semi-rigid or Equiv. 750 .141 (RG402/U) Semi-rigid or Equiv. 1000 Contact Resistance (Milliohms MAX): Center Contact: 3.0 Outer Contact: 2.5 Braid to Body: 0.5 Passive Intermodulation (PIM): -120dBc @ 1.8 GHz (2 X 20W) Materials: Female contacts and outer contact: Copper Alloy Body components and male contacts: Brass Per ASTM B16 Insulators: PTFE (Teflon) Per ASTM D1710 Crimp Ferrules: Copper or Brass Alloy Finishes: Center Contacts: Gold Per ASTM B4888 over Copper Per ASTM B734 Other Metal Parts: Gold, or Tri-metal Plated to meet the corrosion requirements of MIL-PRF-39012 Mating Characteristics: Connector Mating Force: 20 N Connector Unmating Force: 20 N Connector Retention (Fully Mated): 60 N MIN Durability: 100 Cycles MIN Environmental Temperature Rating: -40°C to +85°C Corrosion Resistance:MIL-STD-202, Method 101, Cond B Vibration: MIL-STD-202, Method 204, Cond B Shock: MIL-STD-202, Method 213, Cond A Thermal Shock: MIL-STD-202, Method 107, Cond B, except High Temp shall be +85°C. Moisture Resistance: MIL-STD-202, Method 106, except Step 7b is omitted. No measurement at high humidity. QMA Jacks 661-500-0850R: Straight Jack for .085 Semi-rigid 661-500-1410R: Straight Jack for .141 Semi-rigid 661-900-0630R: Straight Jack for RG316 661-900-0631R: Straight Jack for RG316DB 661-975-2400R: Straight Bulkhead Jack for LMR240® 661-060-0040J: Straight PCB Jack 663-086-0040J: Right-angle PCB Jack 663-060-0040J: Right-angle PCB Jack (Thru-hole) 661-065-0040R: Straight 4-hole flange Jack QMA Plugs 660-500-0850R: Straight Plug for .085 Semi-rigid 660-500-1410R: Straight Plug for .141 Semi-rigid 660-900-0630R: Straight Plug for RG316 660-900-0631R: Straight Plug for RG316DB 660-900-2401R: Straight Plug for LMR240® Connecting Innovation to Application® 62 Barnes Industrial Road North Wallingford, CT 06492 Phone: (203) 741-5400 • Fax: (203) 741-5500