Diodes Incorporated
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Seam Sealed SMD

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Product Description

The 4-pad FL Series seam seal devices in corporate a sub-miniature AT-cut crystal resonator housed in a standard 3.2 x 2.5mm ceramic package. These compact crystals are ideal for surface mounting in densely populated or small form-factor PCB applications.


  • Rugged AT-cut crystal construction
  • Miniature 3.2 x 2.5mm ceramic package
  • Available on tape & reel; 8mm tape, 3000 units per reel
  • Pb-free and RoHS/Green compliant


  • PCMCIA Cards
  • Portable / hand-held PCs
  • Notebook PC
  • HDD
  • GPS
  • Bluetooth
  • Wireless LAN
  • UWB
  • ZigBee
  • Digital Tuner

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
ProductSeries FL
Family Crystal
Legacy PN NKS3
Freq Range (MHz) 8 to 66
Package Type Ceramic Seam
Package Size (mm) 3.2 x 2.5 x 0.65
Pads 4
NotRecommended 0

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2651 2023-11-13 2023-11-13 Qualified Additional Fab Source, Assembly Test Sites, Die Revision, BOM, Datasheet, Tape and Reel Packing Quantity.
PCN-2506 2021-02-09 2021-05-09 Qualified Additional FL Series Package