Antistatic Silicon Mat?
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Found on Amazon, looks very handy but is it really antistatic (ESD safe)
for our purposes? 500 ℃ Heat-resistant silicone repair mat for soldering iron, telephone and computer repair, anti-slip desk repair mat with BGA welding repair station by XOOL <https://www.amazon.co.uk/s/ref=bl_dp_s_web_0?ie=UTF8&field-keywords=XOOL&index=automotive&search-type=ss> 73, F5VJC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Antistatic Silicon Mat?
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Hi,
it is not about the antistatic only... It is about the conductivity and dissipation etc. Generally speaking, the performance of ESD mats depends on the material from which they are constructed. That material can include: • Homogenous mats are comprised of either vinyl or rubber. These mats typically offer the highest amount of electrical absorption because they are composed of a single, solid block of the same material. • Three-layer mats, usually made with vinyl, offer a decent level of electrical absorption. Their strongest advantage comes in the form of an increased level of comfort to the worker standing on the mat. • Two-layer vinyl mats offer the electrical absorption capabilities of three-layer mats at a significantly reduced cost. • Two-layer rubber mats provide both a high level of electrical absorption and an immense level of comfort to workers. Two-layer rubber mats are also extremely chemical-resistant. However, this multipurpose mat comes at a somewhat higher cost than others. Vinyl mats tend to be preferred in situations where cost is the ultimate priority, whereas rubber mats are better for situations where a high level of chemical or heat resistance is required. With that in mind, it’s likely that many companies will require both vinyl and rubber mats for use in different parts of their manufacturing facilities. I posted some info here: http://www.eham.net/ehamforum/smf/index.php/topic,84533.0.html Best regards, 73 - Petr, OK1RP ----- http://ok1rp.blogspot.com -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
73 - Petr, OK1RP
"Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt |
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In reply to this post by Deni F5VJC
I don't believe the mat is anti-static any more than my wife's silicone baking sheets.
They claim the tweezers "adopts anti-static design to prevent static damage to electronic components", whatever that means. No wire attachments are shown for the tweezers. I don't think this is what you want for ESD sensitive work. __________ 73, Jim - N4ST -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of F5vjc Sent: Friday, January 12, 2018 01:32 To: Elecraft Reflector <[hidden email]> Subject: [Elecraft] Antistatic Silicon Mat? Found on Amazon, looks very handy but is it really antistatic (ESD safe) for our purposes? 500 ℃ Heat-resistant silicone repair mat for soldering iron, telephone and computer repair, anti-slip desk repair mat with BGA welding repair station by XOOL <https://www.amazon.co.uk/s/ref=bl_dp_s_web_0?ie=UTF8&field-keywords=XOOL&index=automotive&search-type=ss> 73, F5VJC ______________________________________________________________ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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If there's no ground connection to the mat itself, then for ESD it's about
as useful as a chocolate coffee pot! Google for groups on the 'net who sell mats and have properly evaluated them. The ideal thing is a proper mat with a (resistive) ground connection and a stud to connect wrist strap. That way if you pick up ungrounded tweezers or any other conductive tool, you will be (ESD) grounded and so will the tool. Unless you can find the correct item elsewhere, then purchase the exact same thing via Amazon, I would not trust ANY claims by Amazon sellers. You get what you pay for! 73, Alan. G4GNX -----Original Message----- From: Jim - N4ST Sent: Friday, January 12, 2018 2:28 PM To: 'F5vjc' ; 'Elecraft Reflector' Subject: Re: [Elecraft] Antistatic Silicon Mat? I don't believe the mat is anti-static any more than my wife's silicone baking sheets. They claim the tweezers "adopts anti-static design to prevent static damage to electronic components", whatever that means. No wire attachments are shown for the tweezers. I don't think this is what you want for ESD sensitive work. __________ 73, Jim - N4ST -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of F5vjc Sent: Friday, January 12, 2018 01:32 To: Elecraft Reflector <[hidden email]> Subject: [Elecraft] Antistatic Silicon Mat? Found on Amazon, looks very handy but is it really antistatic (ESD safe) for our purposes? 500 ℃ Heat-resistant silicone repair mat for soldering iron, telephone and computer repair, anti-slip desk repair mat with BGA welding repair station by XOOL <https://www.amazon.co.uk/s/ref=bl_dp_s_web_0?ie=UTF8&field-keywords=XOOL&index=automotive&search-type=ss> 73, F5VJC ______________________________________________________________ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Antistatic Silicon Mat?
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Hi,
yes, exactly. The silicone only means insulating with low charging but there is no way to dissipate nor conduct the charge away to ground. The standard ESD mats has the top dissipative layers and bottom conductive layers mats connected to central ground and equipped with wrist strap. 73 - Petr, OK1RP ----- http://ok1rp.blogspot.com -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
73 - Petr, OK1RP
"Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt |
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In reply to this post by Deni F5VJC
On 2018-01-12 01:32 AM, F5vjc wrote:
> Found on Amazon, looks very handy but is it really antistatic (ESD safe) > for our purposes? I wouldn't touch that type of mat if you are working with static sensitive electronics. For a proper ESD mat take a look at this: https://www.ebay.ca/sch/i.html?_nkw=272253182084 A top half that is dissapative, can't easily be punctured, can handle high temperature for a short time without burning for a short term. The bottom half is conductive. It has attachment points for a wrist strap and for the wire that should be connected to ground to get rid of any charge build up. -- Cheers! Kevin. http://www.ve3syb.ca/ |"Nerds make the shiny things that distract Owner of Elecraft K2 #2172 | the mouth-breathers, and that's why we're | powerful!" #include <disclaimer/favourite> | --Chris Hardwick ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I think might (in some way) OT except that folks here build kits…..
No knocks on ebay - like everywhere else, if you are careful, you can get what you pay for. I’ve found great things there for very little money on ebay. For comparison, a range of bench mats from Newark: http://www.newark.com/c/static-control-site-safety-clean-room-products/esd-protection-products/anti-static-mats I’ve installed and used a wide range of antistatic mats on benches (and far less optimum locations including on the deck, in the snow, and the ground) in lots of places for work. I bought a pair for my benches at home and a 3M portable (field kit): https://www.cdw.com/shop/products/3M-TELCOM-STATIC-FIELD-SERVICE-KIT/2316620.aspx with seems to come from SCS these days (are they spun off of 3M?) Whatever you buy, don’t forget (the obvious, but often overlooked): - at least one wrist strap - and you have to ground the mat I’m relatively new to the amateur radio hobby and I find it fascinating that many of us (this is the Elecraft list after all) are willing to pay nontrivial money for the best radios but at least some find it hard to justify paying for quality for the supporting infrastructure/equipment. YMWV, -Dale KB1ZKD > On Jan 12, 2018, at 12:00 , Kevin Cozens <[hidden email]> wrote: > > On 2018-01-12 01:32 AM, F5vjc wrote: >> Found on Amazon, looks very handy but is it really antistatic (ESD safe) >> for our purposes? > > I wouldn't touch that type of mat if you are working with static sensitive electronics. > > For a proper ESD mat take a look at this: > https://www.ebay.ca/sch/i.html?_nkw=272253182084 > > A top half that is dissapative, can't easily be punctured, can handle high temperature for a short time without burning for a short term. The bottom half is conductive. It has attachment points for a wrist strap and for the wire that should be connected to ground to get rid of any charge build up. > > -- > Cheers! > > Kevin. > > http://www.ve3syb.ca/ |"Nerds make the shiny things that distract > Owner of Elecraft K2 #2172 | the mouth-breathers, and that's why we're > | powerful!" > #include <disclaimer/favourite> | --Chris Hardwick > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Also, I believe ESD wrist straps should have something like a 1 meg ohm resistor in the ground connection to mitigate direct (and potentially fatal) shock to ground while allowing the bleed off static charge. A direct connection to ground is hazardous!
Steve aa8af > On Jan 12, 2018, at 1:19 PM, Dale Chayes <[hidden email]> wrote: > > > > Whatever you buy, don’t forget (the obvious, but often overlooked): > - at least one wrist strap > - and you have to ground the mat > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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An antistatic mat 'worth its salt' will have a ground connection and the
distributed conductance of the mat material provides safety from the direct ground. Yes, wrist straps are different, they have a large resistor (about 1 megohms) in series with the ground connection. Mine connect to a 'button' on the rear corner of the mat. I have a quality mat covering much of my workbench as well as a wrist strap. My commonly used tools rest on the mat as well as the radio being worked on. Other less commonly used tools do not live on the mat but are brought into contact with the mat for a bit of time before touching them to any internal part of the radio. I believe these are good antistatic work practices. 73, Don W3FPR On 1/12/2018 3:23 PM, SteveL wrote: > Also, I believe ESD wrist straps should have something like a 1 meg ohm resistor in the ground connection to mitigate direct (and potentially fatal) shock to ground while allowing the bleed off static charge. A direct connection to ground is hazardous! > > Steve > aa8af > > > >> On Jan 12, 2018, at 1:19 PM, Dale Chayes <[hidden email]> wrote: >> >> >> >> Whatever you buy, don’t forget (the obvious, but often overlooked): >> - at least one wrist strap >> - and you have to ground the mat >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Antistatic Silicon Mat?
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Just FYI,
https://www.ebay.com/itm/232431490283?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649 ... surpluses selling by our local radio club until sellout. 73 - Petr, OK1RP ----- http://ok1rp.blogspot.com -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
73 - Petr, OK1RP
"Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt |
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I can thoroughly recommend these kits. I do all my ESD work on one. 73, Alan. G4GNX -----Original Message----- From: Petr, OK1RP/M0SIS Sent: Monday, January 15, 2018 9:15 AM To: [hidden email] Subject: Re: [Elecraft] Antistatic Silicon Mat? Just FYI, https://www.ebay.com/itm/232431490283?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649 ... surpluses selling by our local radio club until sellout. 73 - Petr, OK1RP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Silicon is great, doesn’t melt if you drop hot solder on it.
----- Chuck, KE9UW -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
Chuck, KE9UW
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Re: Antistatic Silicon Mat?
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In reply to this post by Alan - G4GNX
Thanks for comment Alan,
we still have some of them as we had to purchase large role of that material in order to get nice price from the seller. So we cut them for these mats and completed the set which they are fit to labs as same as to kitchen :) Some of these set are still available in radioclub. After ordering and arrival I decided to make several tests: Several oils, greases and different solvents and mat survived without any damages. The flare-up point and it seems to be higher than 1000 C which is corresponding to almost 2000 F. (I was limited by temp sensors and thermometer over here) The burning thru temperature and it survived 450 C for 2mins which is corresponding to 850 F. (I was limited by my soldering station, hi) The max of the temp without any noticeable damage of the top layer. It survived 200 C for 2mins which is corresponding to 400 F. Best regards, 73 - Petr, OK1RP ----- http://ok1rp.blogspot.com -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
73 - Petr, OK1RP
"Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt |
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