wrist straps

All-Spec Industries offers a number of Desco Jewel® MagSnap wrist straps, providing increased protection to keep your components safe from accidental ESD damage.

Desco Jewel MagSnap Wrist Strap

Design:

MagSnap wrist straps are designed with magnetic clasps to help prevent accidental disconnects. All MagSnaps maintain a 1-5 pound release to allow for a safe breakaway connection to the ground. With the magnetic snap keeping you ESD-safe, you can work with even less worry of an accidental disconnect causing item damage and product failure.

 

Features:

  • Magnetic connection between wrist strap and cord eliminates intermittent failure of traditional snaps
  • Provides a consistent 1-5 pound release for safe breakaway connection without accidental disconnects
  • Works with many wrist strap testers and continuity monitors
  • Medical grade stainless steel clasps eliminate allergic skin reactions for most operators, and prevents bands from slipping
  • Right angled banana plug is designed to prevent wear on its springs, reducing accidental disconnects from the banana jack
  • Coiled cord has passed strain relief tests for over 1 million cycles, 62 times the minimum requirements (per ESD S1.1)

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Machined vs. Formed Snaps

by Andy on March 30, 2012

There are many considerations when creating an ESD-safe work place and one of the biggest is reducing static electricity from humans. Wrist straps are the most common method of grounding an operator at a workstation, but there are some options to look into when purchasing them. An important, but often overlooked, factor is how the snaps are made.

Desco Wrist StrapMachined snaps are made by grinding or cutting a piece of metal into the shape needed. They benefit from increased precision, but can cost more than formed snaps.

Formed snaps are made by stamping a shape into a piece of metal. These can be made much faster and easier, so they tend to be cheaper, but you lose out on the exactness of the machined snaps.

Overall, formed snaps are good for most non-critical applications, especially if you normally sit at your workstation. If precision is important or if you find that your wrist strap accidentally disconnects, then you may want to look into machined snaps.

By using wrist straps with machined snaps you can prevent many accidental disconnects, and also have assurance that the snap will consistently provide a path to ground. Gene Bliley wrote an article for Evaluation Engineering on reducing accidental release problems for his company. It is an interesting read and shows how effective using machined snaps can be if you are having problems with formed snaps. There are many options on the market to get machined snap wrist straps, and if you want more protection some companies offer magnetic snaps.

Has your company had any problems with their ESD-safe program? Leave a comment on what the problem was and how your company fixed it!

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Last week we went over what grounding does and why you need it, so this week we will start to look into methods of grounding. We noted before that static can come from two objects rubbing together. One of the biggest factors in creating an ESD-safe workplace is stopping static from the object that often moves the most: the human body. By walking, sitting down, moving your arms, or any number of other activities your body can generate static, so it is important to use personal grounding equipment to discharge this energy safely.

Heel Ground Shoe Grounds

If you stand or walk around while working with static sensitive equipment then shoe grounds are essential. These devices wrap around your shoes and create a path to ground from your body through the ground strap to the ground. However, in order for these to work properly you must have conductive or dissipative flooring and you must wear a shoe ground on each shoe. When you are walking one foot is off the ground a lot, so you need a continuous path through each shoe. Shoe grounds come in many styles, including heel grounds, toe grounds, and full sole grounds.

Wrist Strap Wrist Straps

When working at a desk shoe grounds are not as effective since your feet are not always touching a grounded surface and are often hanging from your chair or on a footrest. In this instance wrist straps are used to ground the operator, as they provide a constant ground path. Wrist straps can be plugged into an ESD-safe mat, as well as other ground points. Workstation monitors are one such ground, which have the added benefit of testing your equipment and notifying you if any part of your system fails. You can find workstation monitors that just test wrist straps or both wrist straps and ESD-safe mats at the same time.

That is all for this week, make sure to check in next Monday for more information on grounding your workstation!

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