Engineering

Gel-Pak Tack Levels

Gel-Pak retention levels for semiconductor and component handling.

Gel-Pak Tack Levels

Gel-Pak produces gel-based carriers and trays for handling delicate semiconductor components, MEMS devices, optics, and other small parts. The gel provides controlled retention through surface adhesion.

Retention Chart

Gel Elastomer

Retention LevelDescriptionADBDCDVRPFWFDGL
XTUltra Low Tack Gel
XLLow Tack Gel
X0Low Tack Gel
X4Medium Tack Gel
X5Medium Tack Gel
X6High Tack Gel
X8High Tack Gel

ESD Gel

Retention LevelDescriptionADBDCDVRPFWFDGL
ER0Low Tack ESD Gel
ER4Medium Tack ESD Gel
ER6Medium Tack ESD Gel

Vertec Elastomer

Retention LevelDescriptionADBDVRPFWF
FP64Low Tack Vertec
FM71Medium Tack Vertec
FK79High Tack Vertec

ESD Vertec Elastomer

Retention LevelDescriptionADBDVRPFWF
EH01Ultra Low Tack ESD Vertec
EH02Low Tack ESD Vertec
EH04Medium Tack ESD Vertec
EH06High Tack ESD Vertec
EH07High Tack ESD Vertec
FE70Medium Tack ESD Vertec

Product Types

  • AD — Adhesive Die (individual cavities)
  • BD — Bare Die (open gel surface)
  • CD — Chip Die
  • VR — Vacuum Release
  • PF — Peel Film
  • WF — Wafer Film
  • DGL — Gel-covered lid

Selection Guide

  • Heavier/larger components → lower tack level
  • Thinner/smaller components → higher tack level
  • Rough surfaces → lower tack (more mechanical grip)
  • Smooth/polished surfaces → higher tack needed
  • ESD-sensitive components → use ER or EH series

Tips

  • Components should release cleanly with tweezers or vacuum pickup
  • If parts fly off during transport → increase tack level
  • If parts are hard to pick up → decrease tack level
  • Store gel trays covered to prevent dust contamination
Gel-Pak official retention chart