Jay, please keep us up to date. I would like to know how the Silver Ice performs.
________________________________ From: EV <ev-boun...@lists.evdl.org> on behalf of Jay Summet via EV <ev@lists.evdl.org> Sent: Wednesday, March 1, 2017 9:07 AM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Silicon heat sink grease - Actually bought non-silicon Silver Ice 710 NS For anybody interested, I received a reply from Loctite about the Silverstrate conductive pads. They have discontinued that product and do not offer a replacement that is conductive. I called Timtronics directly and was able to order a 3 cc syringe of the Silver Ice 710 NS for $43 (+ S/H) over the phone. For the record, the Silver Ice 710 (without the NS) is a resin based dry film, and the 710 NS is an oil based wet film. They both have the same performance if the film is the same thickness, but the wet film (oil based) product typically spreads out more, resulting in a thiner film and better performance. They recommend the dry film for larger parts where you wouldn't want to risk oil escaping out the sides, but for smaller parts like the TO-220 / TO-247 mosfets and diodes I'm using they said that the NS formulation should work best. Details about the silver ice at this website: http://www.timtronics.com/electricallyconductive.htm Electrically Conductive Thermal Compounds - Timtronics.com<http://www.timtronics.com/electricallyconductive.htm> www.timtronics.com Black Ice 700 series are electrically and thermally conductive greases engineered with highly conductive fillers, silicone and non silicone formulas. Thermal ... Jay On 02/28/2017 12:49 AM, ROBERT wrote: > Sorry Jay. I did not try to order the material. I walked down to my > workshop and found the material that I have used. It is call Silver Ice > 710 and is made by Timtronics out of NY. I had the stuff for a long > time. It is a gray grease and is not a change phase material. I looked > at the cut sheets on the Loctite and the Silver Ice 710. Looks like the > Silver Ice has a better electrical and thermal conductivity than the > Loctite. Tomorrow I will call my old company and get contact for Loctite. > > > > ------------------------------------------------------------------------ > *From:* Jay Summet <j...@summet.com> > *Sent:* Monday, February 27, 2017 7:26 PM > *To:* ROBERT; Electric Vehicle Discussion List > *Subject:* Re: [EVDL] Silicon heat sink grease > > Thanks for that link. Unfortunately, when I tried to order, it turns out > they are not in stock, have a minimum 53 piece order quantity, and a 5-6 > week shipping delay. > > [I also didn't know how many I'd need, because the 1.57 x 1.57 size does > not have any units on it, so I didn't know if it was mm, cm, or inches.] > > Ideally if I was to use Silverstrate, I'd like to buy pre-cut TO-220 and > TO-247 sized pads for the MOSFETS and DIODES. > > Jay > > On 02/27/2017 08:24 PM, ROBERT wrote: >> You can get the Loctite Silverstrate ECF1000 at Diverse Electronics. >> >> >> http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/ LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ...<http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> www.diverseelectronics.com LOCTITE Silverstrate is an electrically conductive phase change thermal interface material suitable for use between a heat sink and a variety of heat dissipating ... > > LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ... > <http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ...<http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> www.diverseelectronics.com LOCTITE Silverstrate is an electrically conductive phase change thermal interface material suitable for use between a heat sink and a variety of heat dissipating ... > www.diverseelectronics.com<http://www.diverseelectronics.com> Shop Electronics Products Online, Electronic Components ...<http://www.diverseelectronics.com/> www.diverseelectronics.com Diverse Electronics is an authorized electronic components and electromechanical parts distributor. In-stock inventory ready to ship. No minimums. Shop Today. > LOCTITE Silverstrate is an electrically conductive phase change thermal > interface material suitable for use between a heat sink and a variety of > heat dissipating ... > > >> >> LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ... >> <http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ...<http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> www.diverseelectronics.com LOCTITE Silverstrate is an electrically conductive phase change thermal interface material suitable for use between a heat sink and a variety of heat dissipating ... > > LOCTITE ECF1000 Silverstrate AK Phase Change Material 1.57 ... > <http://www.diverseelectronics.com/products/Loctite-ECF1000-Silverstrate-AK-Phase-Change-Material-1-57-x-1-57-p7562/> > www.diverseelectronics.com<http://www.diverseelectronics.com> > LOCTITE Silverstrate is an electrically conductive phase change thermal > interface material suitable for use between a heat sink and a variety of > heat dissipating ... > > >> www.diverseelectronics.com<http://www.diverseelectronics.com> >> <http://www.diverseelectronics.com> > Shop Electronics Products Online, Electronic Components ... > <http://www.diverseelectronics.com/> > www.diverseelectronics.com<http://www.diverseelectronics.com> > Diverse Electronics is an authorized electronic components and > electromechanical parts distributor. In-stock inventory ready to ship. > No minimums. Shop Today. > > >> LOCTITE Silverstrate is an electrically conductive phase change thermal >> interface material suitable for use between a heat sink and a variety of >> heat dissipating ... >> >> >> I just did a google search and got this supplier. This compound is >> electrically conductive. I would be careful. Very seldom have I used a >> conductive thermal compounds. I would check conductivity between the >> lead and the device. And for sure, I would check conductivity after I >> installed the Diodes and Mosfets. >> >> >> ------------------------------------------------------------------------ >> *From:* EV <ev-boun...@lists.evdl.org> on behalf of Jay Summet via EV >> <ev@lists.evdl.org> >> *Sent:* Monday, February 27, 2017 6:13 PM >> *To:* ev@lists.evdl.org >> *Subject:* Re: [EVDL] Silicon heat sink grease >> >> That depends upon your application. Between the controller's outside and >> the base plate, I agree with you. >> >> However, I'm using this between the MOSFETS and DIODES and the interior >> heatsync, which also doubles as one of the power rails. The circuit is >> designed such that the mosfets and diode cases must be electrically >> connected to the heatsync. (The heatsync is electrically isolated from >> the case by a SiPad.) >> >> So I'm looking specifically for something that will conduct electricity >> AND heat. (The MOSFET's and DIODES are connected via a screw, which will >> conduct electricity, but I figure the lower the resistance the better.) >> >> The carbon grease is electrically and thermally conductive, but it >> appears to be designed for switch contacts more than simiconductor >> heatsync applications, and is probably not as conductive as a silver >> grease, so I'm still poking around looking at what my options are to >> purchase. >> >> >> Jay >> >> On 02/27/2017 04:55 PM, Mark Hanson via EV wrote: >>> Hi folks >>> Heat sink grease should be NON conductive electrically but thermally >>> conductive white grease. You can also use thermosil less thermally >>> conductive but less messy or Kapton. >>> Best regards >>> Mark >>> >>> Sent from my iPhone >>> _______________________________________________ >>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > <http://www.evdl.org/help/index.html#usub> > > EVDL Subscription Information and Help > <http://www.evdl.org/help/index.html#usub> > www.evdl.org<http://www.evdl.org> > About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by > EV enthusiast Clyde Visser, is an active and vital source of information > and help for people ... > > >> <http://www.evdl.org/help/index.html#usub> > <http://www.evdl.org/help/index.html#usub> > > EVDL Subscription Information and Help > <http://www.evdl.org/help/index.html#usub> > www.evdl.org<http://www.evdl.org> > About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by > EV enthusiast Clyde Visser, is an active and vital source of information > and help for people ... > > >> >> EVDL Subscription Information and Help >> <http://www.evdl.org/help/index.html#usub> > <http://www.evdl.org/help/index.html#usub> > > EVDL Subscription Information and Help > <http://www.evdl.org/help/index.html#usub> > www.evdl.org<http://www.evdl.org> > About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by > EV enthusiast Clyde Visser, is an active and vital source of information > and help for people ... > > >> www.evdl.org<http://www.evdl.org> <http://www.evdl.org> > EVDL - The Electric Vehicle Discussion List <http://www.evdl.org/> > www.evdl.org<http://www.evdl.org> > The Electric Vehicle Discussion List (EVDL), founded in 1991 by EV > enthusiast Clyde Visser PE, is the Internet's oldest and most > comprehensive resource supporting EV ... > > >> About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by >> EV enthusiast Clyde Visser, is an active and vital source of information >> and help for people ... >> >> >>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > EV -- Electric Vehicle Discussion List - lists.evdl.org ... > <http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > lists.evdl.org > The Electric Vehicle Discussion List is a forum for discussing the > current state of the art and future direction of electric vehicles > (EVs). 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