Applications

Support and Information for Operating Nisene Equipment

On this page you will find support for decapsulation applications, a glossary of fixtures and terms, part numbers for etch fixtures, and other general information related to operating Nisene equipment.

Fixtures List

Know Your Fixtures!

Understanding the decapsulation fixtures for the JetEtch Pro and using them as intended is an essential step to maximizing the efficiency and decapsulation potential of your system. This page will illustrate the standard etching fixtures available, along with several different decapsulation stack-ups that one might encounter when using the JetEtch Pro. You might find that customized versions of these stack-ups work better for your application.

Have a look at the illustrations of several of our standard etch fixtures below. Feel free to rotate them and view larger images to get the full detail on each fixture.

Most of these etch fixtures are available for purchase at our online store, shop.nisene.com. Our online store is available for anyone with Nisene decap equipment as a small part of our value-added service. 

Gasket Types

Using the 3D carousels, have a look at our various types of gasket designs by dragging your mouse and spinning the image. You may also wish to enlarge the image and use the carousel in full-screen mode. Use the expansion arrows () to do that.

Location Gasket

Definition Gasket

Monolithic Gasket

Stepped Gasket

Various Etch Fixtures

Using the 3D carousels, have a look at our various types of etching fixtures by dragging your mouse and spinning the image. You may also wish to enlarge the image and use the carousel in full-screen mode. Use the expansion arrows () to do that.

Teflon® Blank

Aluminum Blank

Alignment Plate

Die-down Plate

BGA Alignment Plate

Locator Ring (1.00″)

Locator Ring (1.38″)

Glossary of Fixtures

Location Gasket

The Location Gasket is used to align the sample above the Definition Gasket during the etch process. It locates the sample in its place; hence the name “Location Gasket.”

Location Gaskets are just slightly larger than the perimeter of the IC device’s outermost sidewalls. Note, however, that some packages require location by way of sidewall, leads, or both — so inspect and measure your part carefully when choosing a Location Gasket. If you need help selecting the best Location Gasket for your application, just contact our applications department and we’ll gladly help.

Location Gaskets are approximately .032” thick.

9700028

 

Definition Gasket

The Definition Gasket is used as a mask for the sample during the etch process. It defines the etch cavity; hence the name “Definition Gasket.”

Choosing the correct size of Definition Gasket is a little bit of an art form and takes some experience, but is generally not difficult to do. A Definition Gasket is almost always the size of the die within a package, but not always. Sometimes the Definition Gasket may be smaller or larger than the die depending on the desired resultant etch cavity, package thickness, target area, and/or some combination of all of that. If you need help selecting the best Definition Gasket for your application, just contact our applications department and we’ll gladly help.

Definition Gaskets are approximately .070” thick.

9700033

 

Blank Gasket

The blank gasket is used to run a blank part and other etch and maintenance processes. They can even be used to create custom gaskets. They come in two outer dimensions (1.00″, 1.38″) and two thicknesses (Definition, .070″; Location, .032″). A pack of five of each type is included in each Basic Accessory Kit (0300600) that ships with every system.

9700034

 

Monolithic Gasket

The Monolithic Gasket is a singular gasket that combines a Definition Gasket and Location Gasket into one. Monolithic Gaskets are custom-designed and most effective for samples that require extreme precision in the decapsulation result. Monolithic Gaskets are approximately .115” thick.

9700081

 

Stepped Gasket

The Stepped Gasket is a raised-lip gasket used for the decapsulation of die-down BGA samples. Stepped Gaskets are approximately .115” thick.

9700083

 

Etch Head

The etch head is where the acid escapes the heat exchanger assembly on its way to the surface of the sample being etched. It also has ports for transporting the waste acid to the waste acid bottles.

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Teflon® Blank

The Teflon® blank spreads the force of the ram nose evenly across the backside of the sample during the etch process. The Teflon® blank also is used in the process of running a blank and other processes.

The Teflon® blank is included in the Basic Accessory Kit (0300600) that ships with every system.

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Aluminum Blank

Much like the Teflon® blank, the aluminum blank spreads the force of the ram nose evenly across the backside of the sample during the etch process. It is also a critical component to conducting the bias to complete the circuit during etches used with the CuProtect and TotalProtect where the bias is activated and copper wire preservation is desired.

The aluminum blank is included in the Basic Accessory Kit (0300600) that ships with every CuProtect and TotalProtect system.

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Ram Nose

The ram nose applies pressure to the stack-up during the etch and other processes. They come in three different lengths to allow for various package thicknesses and stack-up variations. All three are included in the Basic Accessory Kit (0300600) that ships with every system.

The ram nose also acts as an electrical conductor for the bias process seen in the CuProtect and TotalProtect models.

0602322

 

Alignment Plate

The Alignment Plate aligns the sample to the Definition Gasket during the etch process. The Alignment Plate is usually used for samples with larger package dimensions that don’t fit within the perimeter of the standard Location Gaskets (1” or 1.38” OD), but not necessarily always. Sometimes they’re just more convenient, as they are a universal fixture that can fit many samples.

The example rendering shows an Alignment Plate with a recess for a QFP-type sample.

0700032

 

Alignment Plate, BGA

The Alignment Plate aligns the sample to the Definition Gasket during the etch process. The Alignment Plate is usually used for samples with larger package dimensions that don’t fit within the perimeter of the standard Location Gaskets (1” or 1.38” OD), but not necessarily always. Sometimes they’re just more convenient, as they are a universal fixture that can fit many samples.

The BGA Alignment Plate has a recess for the solder balls on the BGA package, as well as a crossbar that applies pressure to the plate — and therefore the edges of the package without touching the solder balls — while etching. See BGA stack-up below. (coming soon)

0700101

 

Alignment Plate, Die-down BGA

The Alignment Plate aligns the sample to the Definition Gasket during the etch process. The Alignment Plate is usually used for samples with larger package dimensions that don’t fit within the perimeter of the standard Location Gaskets (1” or 1.38” OD), but not necessarily always. Sometimes they’re just more convenient, as they are a universal fixture that can fit many samples.

The Die-down BGA Alignment Plate features extra thickness when compared to our standard Alignment Plates. The oversized radii on the corners of the aperture ensure easy alignment before the etch process, and easy package removal once the etch has completed. See die-down BGA stack-up below. (coming soon)

0600812

 

Locator Ring, 1.00″ OD

The Locator Ring aligns the gaskets to the etch head. The 1.00″ OD Locator Ring is for the smaller gaskets (1.00″ OD) and is used for most parts, but not necessarily all of them. For larger gaskets, use the 1.38″ OD Locator Ring (see next section).

Note that the 1.00″ OD and 1.38″ OD mount on the etch head slightly differently from each other. Sometimes JetEtch operators try to install the 1.00″ OD version upside-down — and it doesn’t fit that way.

Locator Rings are included in the Basic Accessory Kit (0300600) that ships with every system. They rarely need replacement, but in the event that you find yourself in need of a new one, they can be purchased on our online store.

0600832

 

Locator Ring, 1.38″ OD

The Locator Ring aligns the gaskets to the etch head. The 1.38″ OD Locator Ring is for the larger gaskets (1.38″ OD) and is used less frequently than the 1.00″ Locator Ring, but is still fairly common. For smaller gaskets, use the 1.00″ OD Locator Ring (see previous section).

Note that the 1.00″ OD and 1.38″ OD mount on the etch head slightly differently from each other. Sometimes JetEtch operators try to install the 1.00″ OD version upside-down — and it doesn’t fit that way.

Locator Rings are included in the Basic Accessory Kit (0300600) that ships with every system. They rarely need replacement, but in the event that you find yourself in need of a new one, they can be purchased on our online store.

0600833

 

Teflon® Etch Cup

The Teflon® Etch Cup is used to aid in the etching of very small (e.g. SOT-23) samples. Use in conjunction with the Teflon® Etch Cup Cap (next section).

The Teflon® Etch Cup, its cap, and a variety of gaskets comes with our SOIC Accessory Kit (0300603).

See stack-up for small devices below (coming soon).

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Teflon® Etch Cup Cap

The Teflon® etch cup is used in conjunction with the Teflon® Etch Cup to apply pressure to the backside of the sample during the etch process.

The Teflon® Etch Cup Cap, its cup, and a variety of gaskets comes with our SOIC Accessory Kit (0300603).

See stack-up for small devices below (coming soon).

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Wide Ram Nose

The wide ram nose is an alternative fixture to the standard ram nose. Some end users prefer this ram nose to the traditional ram nose, as its built-in pressure-spreading design may eliminate the need for the Teflon® Blank.

The wide ram nose was originally designed and is usually used primarily for smart card etching.

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Smart Card Holder

The Smart Card Holder is used exclusively for the etching of smart cards. This fixture aligns the smart card directly over the center of the etch head. Used in conjunction with a Definition Gasket, the Smart Card Holder offers the user a simple and repeatable way of etching all smart cards.

Choose between the 8-contact or 6-contact smart card or purchase them both together along with several popular Definition Gasket sizes in our Smart Card Accessory Kit (0300375).

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