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PEM® surface mounted standoffs that eliminate the need for attaching screws

  • PEM® SMTSS™ fasteners feature a spring action to hold a P.C. Board securely without screw or threaded hardware, allowing for quick assembly.
  • Mount on P.C. Boards in the same manner and at the same time as other surface mount components prior to the automated reflow solder process.
  • Alleviated concerns about potential damage to P.C. Boards due to improper secondary installation operations.
  • Fasteners provided on tape and reel compatible with existing SMT automated installation equipment.
  • Benefits include reduced scrap, reduced handling and reduced risk of board damage.
    • Unit of Measure

    L - Length ± 0.13

    		 N/A 10 mm TYPE-SMTSSS-2.jpg

    Min. Sheet Thickness

    		 N/A 1.53 mm

    A Max.

    		 N/A 1.53 mm

    C Max.

    		 N/A 4.09 mm

    E ± 0.13

    		 N/A 6.35 mm

    B ± 0.13

    		 N/A 4.80 mm

    P ± 0.13

    		 N/A 3.58 mm

    øH - Hole Size in Sheet +0.08

    		 N/A 4.22 mm

    øD - Min. Solder Pad

    		 N/A 7 mm
    Parts per Reel1 N/A 200

    Fastener Material

    		 N/A Carbon Steel
    Standard Finish2 N/A Electro-Plated Tin, ASTM B 545, Class A with Clear Preservative Coating, annealed

    Top Mounting Hole A +0.08

    		 N/A 4 mm TYPE-SMTSSS-Application.jpg

    Bottom Mounting Hole B +0.08

    		 N/A 4.22 mm

    Min. Thickness - Panel 1 (Bottom)

    		 N/A 1.53 mm

    Thickness Range - Panel 2 (Top)

    		 N/A 1 to 1.8 mm

    Material - Panel 1 (Bottom)

    		 N/A PC Board

    Material - Panel 2 (Top)

    		 N/A PC Board or Metal

    Edge Distance C Min.

    		 N/A 2.54 mm

    Location Tolerance

    		 N/A ±0.13 mm

    Max. Hardness - Panel 1 (Bottom)

    		 N/A No Limit

    Max. Hardness - Panel 2 (Top)

    		 N/A No Limit

    CAD Supplier

    		 N/A PennEngineering® (PEM®)
    • 1 Packaged on 330mm recyclable reels. Tape width is 24 mm. Supplied with polyimide patch for vacuum pick up. Reels conform to EIA-481.
    • 2 (1) See PEM Technical Support section of our web site for related plating standards and specifications. (2) Optimal solderability life noted on packaging.