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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
    Items
    TYPE SMTSS

    SMTSS™ REELFAST® Surface Mount SNAP-TOP® Standoffs - Unified
    TYPE SMTSS

    SMTSS™ REELFAST® Surface Mount SNAP-TOP® Standoffs - Unified
    L - Length ± .005
    		N/A .250 in TYPE-SMTSSS-2.jpg N/A .375 in TYPE-SMTSSS-2.jpg
    Min. Sheet Thickness N/A .060 in
    A Max. N/A .060 in
    C Max. N/A .161 in
    E ± .005 N/A .250 in
    B ± .005 N/A .188 in
    P ± .005 N/A .141 in
    øH - Hole Size in Sheet + .003 - .000 N/A .166 in
    øD - Min. Solder Pad N/A .276 in
    Parts per Reel1 N/A 280 N/A 220
    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 + .003 -.000 N/A .156 in TYPE-SMTSSS-Application.jpg
    Bottom Mounting Hole B + .003 -.000 N/A .166 in
    Min. Thickness - Panel 1 (Bottom) N/A .060 in
    Thickness Range - Panel 2 (Top) N/A .040 to .070 in
    Material - Panel 1 (Bottom) N/A PC Board
    Material - Panel 2 (Top) N/A PC Board or Metal
    Edge Distance C Min. N/A .100 in
    Location Tolerance N/A ±.005 in
    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.