ESD mats portable set for safe soldering

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ESD mats portable set for safe soldering

Postby ok1rp » 08 Aug 2012 10:38

Hi all,

I have to say that I am very satisfied with my Juma RX1 receiver. For its simplicity
the performance is great and it comes to be my favourable toy.
After bad experiences with electronic parts soldering I decided to solve my
ESD protection in the kitchen "lab" a bit better...

I would like to share my experiences with ESD mats for safe, ESD protective
soldering as it can help to others. I looked for long time on the eBay and other
shops for possibility to purchase small portable ESD mats including the cables
to connect for same el. potential or directly to common ground.

All mats I found were big and expensive or small but expensive or small, not
high quality and expensive etc.

Requested parameters were: two layers, oil, grease and solvent resistant, high
temp resistant, acid proof and knife cut proof material.

After long time I returned back to Czech market where I found the company where
they has exactly what I looked for but unfortunately the mats are too big.
Standard size is 80cm x 160cm for high price dedicated for professional
industrial usage. So I tried to call them and after some negotiation they
promised to cut it for me to preffered size 40x60cm and install the cables and
bananas for ground connection.

We also reached after some phone calls negotiation an excellent price.

Parameters:
- thickness: 2mm
- RTG = 10^6 – 10^8

ESD Rubber Mats have two layers; the top one is a blue static dissipative rubber
layer laminated to a black conductive rubber bottom layer. Surface resistivity
of the top layer is 106 – 108 and bottom layer is 105 – 106. This ESD Rubber
material offers excellent resistance to oil, grease and most common solvent.

These ESD Rubber Mats are very light compared to single layer and three
layer mats.

After ordering and arrival at home 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.

Finaly I tried to cut it using standard knife and make the hole thru using drill
and it proved very high resistance.

All these tests results are so great that I am really happy with this new ESD
mat and I am sure that it will make great job.

RESUME:
If You would like to get this ESD mats also then let me know OFF-LIST to
indians@xsmail.com
I am ready to help You with purchasing, repacking and shipping to you worldwide
as NON-profit help.

...and one more think

Sorry for a bit longer message and bothering other people but I guess it can
help to many of us with ESD issue and hope it will help to some of You as same
as to me with safe soldering in the kitchen property...

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic

Re: ESD mats portable set for safe soldering

Postby ok1rp » 27 Aug 2012 15:50

Hello,

thank You for off-list emails regarding the ESD theory and usage in the field. I decided to share most important...

Yes, both coiled wires has 1MOhms resistors included so no additional grounding point with resistor needed to limit the current thru body!
It is ready to use without any additional h/w. Just put on the table and connect to wristband and common ground. That's it.

To get best price from supplier we ordered with local friends higher amount of the sets so I have rest of them available for sale.
Let me know if You want to get it.

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic

Re: ESD mats portable set for safe soldering

Postby ok1rp » 13 Sep 2012 14:47

ESD mat surface resistivity...

Hello all,
thank You very much again for another few off-list emails regarding the ESD mat surface resistivity.
In fact I did not measured surface resistivity of this R2 Ultra ESD mat for the first time because I had not any appropriate probes available to make serious measurement.

According to Your kind comment in an emails I called to my friend who is working in the industrial corporation and he allowed me to use their professional surface resistivity tester with actual calibration certificate.

Measured in harmony with IEC 61000 standard I tested this ESD mat and with 6cm distance measured the resistivity of 12.1x10^6 Ohms which corresponding to better than 10^7 Ohms. It seems to be perfect result as the suppliers datasheet is talking about the 10^6 to 10^8 Ohms range.

So finally I am really happy with it and hope it really help in order to protect ESD-sensitive circuits/equipment or parts when handling or soldering etc.

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic

Re: ESD mats portable set for safe soldering

Postby ok1rp » 21 May 2014 20:54

Hi all,

upon few email requests I am posting over here that mentioned ESD mat sets are still available (in few pcs).
Do not hesitate to email me if You need them for safe Juma kits building/soldering.

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic

Re: ESD mats portable set for safe soldering

Postby ok1rp » 29 Jul 2014 07:28

Hello,

I got during last weeks few emails regarding the different ESD mat size. So yes, I can confirm that it is aslo possible to provide different size of the ESD mats. Any kind of ESD mats sizes are avaiable upon request. Most common sizes are 800x1600mm, 800x1200mm, 900x1400mm etc. Let me know the size needs for Your lab or ham shack and I will try to help You.

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic

Re: ESD mats portable set for safe soldering

Postby ok1rp » 20 Jan 2015 16:49

Hello,

after long time the ESD mat set (see above) are again available for the same price.

Do not hesitate to ask or send me an email regarding the ordering.
I asked the supplier to sell me bigger amount of the mat role and I cutted several mats 40x60cm size (hard work :)...)
So set are completed and readyif someone needed for building the Juma radios or other Juma kits.
(Of course it willl work also for other electronics but JUMA preffered :)

73 - Petr, OK1RP
ok1rp
 
Posts: 55
Joined: 27 Feb 2012 23:20
Location: Czech Republic


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