QFN Sockets For Probing
Into Open Cavity M-QFN
 
 
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Socket with top open window. Excellent for probing into the cavity of M-QFN while measuring outputs on bottom of QFN package.

Contactor: Replaceable Elastomer permits 10K cycles

Allows Universal pin count within same M-QFN outline size.
  • Screw lock top.
  • Open window top
  • Permits probing into the cavity of M-QFN
  • PCB positioning pegs
  • Current Rating ~ 2A (Depending on QFN pad dimensions)
  • Contact Resistance < 50 mΩ (each pad)
  • Quick Turn
    		•
     
     
     
    ELW Socket at a Glance
    Part Series ELW Elastomer Socket
    Description Exploded View
    Open Window on Top
    Screw Twist Lock    		 Universal Design
    Open Window on Top
    Screw Twist Lock
    Exploded
    View
    Install Solidworks e-Drawings software Version 10.
    Required to view rotatable models:        Download
     
     
    ELW Series with Window for Probing into M-QFN Cavity
    Socket
    Part
    Number    		 M-QFN
    Package
    Size    		 Window
    Opening    		 Sealing
    Method    		 Universal
    Fits All
    Pin Count
    Pitch    		 Use with
    QFN Series    		 Socket
    Outline
    Drawing
    PDF    		 360°
    Rotatable
    Model
    Solidworks
    ELW2 2x2mm Ø0.8mm Screw
    Twist Lock    		 6L - .5mm
    6L - 0.65mm
    8L - 0.4mm
    8L - 0.5mm
    8L - 0.65mm
    10L - 0.5mm
    		 M-QFN 171002  ELW2
    ELW3 3x3mm 2.5x2.5mm Screw
    Twist Lock    		 8L - 0.65mm
    10L - 0.5mm
    12L - 0.5mm
    12L - 0.65mm
    16L - 0.5mm
    20L - 0.4mm
    		 M-QFN 170003  ELW3
    ELW4 4x4mm 3x3mm Screw
    Twist Lock    		 12L - 0.65mm
    12L - 0.80mm
    16L - 0.65mm
    20L - 0.5mm
    24L - 0.5mm
    28L - 0.4mm    		 M-QFN 170004  ELW4
    ELW5 5x5mm 4x4mm Screw
    Twist Lock    		 16L - 0.80mm
    20L - 0.65mm
    20L - 0.80mm
    24L - 0.65mm
    28L - 0.5mm
    32L - 0.5mm
    36L - 0.4mm
    40L - 0.4mm    		 M-QFN 170005  ELW5
    ELW6 6x6mm 5x5mm Screw
    Twist Lock    		 20L - 0.80mm
    24L - 0.80mm
    28L - 0.65mm
    32L - 0.65mm
    36L - 0.5mm
    40L - 0.5mm
    48L - 0.4mm    		 M-QFN 170006  ELW6
    ELW7 7x7mm 6x6mm Screw
    Twist Lock    		 28L - 0.80mm
    32L - 0.65mm
    40L - 0.5mm
    44L - 0.5mm
    48L - 0.5mm
    56L - 0.4mm    		 M-QFN 170007  ELW7
    ELW8 8x8mm 7x7mm Screw
    Twist Lock    		 32L - 0.80mm
    40L - 0.65mm
    44L - 0.65mm
    52L - 0.5mm
    56L - 0.5mm
    64L - 0.4mm
    68L - 0.4mm    		 M-QFN 170008  ELW8
    ELW9 9x9mm 8x8mm Screw
    Twist Lock    		 64L - 0.5mm
    72L - 0.4mm
    76L - 0.4mm    		 M-QFN 170009  ELW9
    ELW10 10x10mm 9x9mm Screw
    Twist Lock    		 68L - 0.5mm
    72L - 0.5mm
    88L - 0.4mm    		 M-QFN 170010  ELW10
    ELW12 12x12mm 11x11mm Screw
    Twist Lock    		 80L - 0.5mm
    100L - 0.4mm    		 M-QFN 170012  ELW12
    Socket
    Part
    Number    		 LCC
    Package
    Size    		 Window
    Opening    		 Sealing
    Method    		 Pins & Pitch Use with
    LCC Series    		 Socket
    Outline
    Drawing
    PDF    		 360°
    Rotatable
    Model
    Solidworks
    ELW8.9 LCC20
    8.9mm
    0.35-inch    		 8x8mm Screw
    Twist Lock    		 20L - 1.27mm LCC20 170089
    ELW11 LCC28
    11.4mm
    0.45-inch    		 10x10mm Screw
    Twist Lock    		 28L - 1.27mm LCC28 170011
    ELW14 LCC32
    11.4x14mm
    0.45x.55-inch    		 10x13mm Screw
    Twist Lock    		 32L - 1.27mm LCC32 170014
    ELW15 LCC48
    14.2mm
    0.56-inch    		 11.5x11.5mm Screw
    Twist Lock    		 48L - 1.0mm LCC48 170015
    ELW16 LCC44
    16.5mm
    0.65-inch    		 15x15mm Screw
    Twist Lock    		 44L - 1.27mm LCC44 170016
    ELW19 LCC52
    19mm
    0.75-inch    		 18x18mm Screw
    Twist Lock    		 52L - 1.27mm LCC52 170019
    ELW24 LCC68
    24.13mm
    0.95-inch    		 23x23mm Screw
    Twist Lock    		 68L - 1.27mm LCC68 170024  ELW24
    ELW29 LCC84
    29.2mm
    1.15-inch    		 28x28mm Screw
    Twist Lock    		 84L - 1.27mm LCC84 170029
    Material: FR4: Retention Frame and Socket
    Install Solidworks e-Drawings software Version 10.
    Required to view rotatable models:        Download
     
     
    About Elastomer Interposers
    Flammability UL 94V-0  •  Operating Temperature -35°C to +125°C
    Contact Resistance < 50mΩ  •  Insulation Resitance > 1000 MΩ
    Capacitance < 0.3pF  • Inductance <0.6nH
    Breakdown Voltage: 500VDC
    Current Rating > 2A at 0.1mm (min) compression (Depending on dimensions of the pad)
    Elastomer Life: 10K cycles (min) for QFN devices
    Typical dimensions of Elastomer Interposer Location of elastomer in the socket.
    P1 = 0.05mm
    P2 = 0.05mm
    T = 0.50mm (±0.05mm)
    Gold Wire Offset = 0.25mm (±0.05mm)
    L * W = 3mm to 12mm (Depending on size of QFN)
     
     
    Current Rating (Amp) Elastomer Interposers
    Refer to the dimension table below for the current rating per pin.
    Based on compression depth of 0.1mm into elastomer.
    QFN Pin dimensions Current Rating per QFN Pin
    0.4mm x 0.35mm 2.7A
    0.4mm x 0.30mm 2.4A
    0.4mm x 0.25mm 1.9A
    0.4mm x 0.20mm 1.6A
    0.35mm x 0.20mm 1.2A
    0.30mm x 0.30mm 1.1A
     
     
    Thermal Conductivity of Elastomer Interposer
    Refer to table below.
    Material Thermal Conductivity
    Elastomer Material (ASTM 5470) 1.0 ~ 2.2W/m-K
    Gold Wires in Elastomer ~310W/m-K
     
     
    Socket Part Numbering System
    E LW 5
    Contactor Model Size
    Elastomer
    E = Elastomer Contactor    		 LW = Screw Twist Lock

    S = Spare Elastomer    		 Size 3~29 mm
     
     
     
    Socket Drawing Numbering System
       17       0       0       05   
    Series Contactor Lid Type QFN Size
    17 = Socket 0 = Elastomer Contactor

    1 = Spare Elastomer    		 0 = Screw Twist Lock
    Window for probing into die cavity    		 Size (mm):
    03 to 29
     

    Mirror Semiconductor
    17595 Harvard Ave, Suite 509, Irvine, CA 92614, USA
    Tel: 1-866-404-8800
    email to Info@MirrorSemi.com


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