<p dir="ltr">Will Kapton tape work?</p>
<br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 29, 2025, 1:57 PM Ben Stuyts via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="line-break:after-white-space">And upon checking the Sil-Pad and pointing out that the specs were in error:<div><br></div><div>"Apologies for any confusion in my earlier response. Upon reviewing the specifications for Bergquist Sil-Pad 400, here are the accurate details:<div><br></div><div>Breakdown Voltage:</div><div>0.007-inch thickness: 3,500 VAC</div><div>0.009-inch thickness: 4,500 VAC</div><div>Thermal Conductivity: 0.9 W/m-K</div><div>Operating Temperature Range: -60°C to +180°C</div><div>Given your requirement for a thermal pad that can withstand 130 VDC without arcing, the Sil-Pad 400's breakdown voltage ratings are more than sufficient. For instance, the 0.007-inch version can handle up to 3,500 VAC, which is significantly higher than 130 VDC. Additionally, this silicone-based pad does not require any thermal compound, aligning well with your preferences.</div><div><br></div><div>Therefore, Bergquist Sil-Pad 400 should be a suitable choice for your application.”</div><div><br></div><div>Sigh…</div><div><br></div><div>Ben</div><div><br></div><div><br><blockquote type="cite"><div>On 29 Jan 2025, at 21:51, Ben Stuyts <<a href="mailto:ben@stuyts.nl" target="_blank" rel="noreferrer">ben@stuyts.nl</a>> wrote:</div><br><div><div style="line-break:after-white-space">I’m having fun asking these kind of things on ChatGPT 4o, so beware, the following is unverified :-)<div><br></div><div>“For a TO-220 package that needs to withstand 130VDC without arcing and without using mica or thermal compound, silicone-based thermal pads are an excellent choice. These pads provide electrical insulation while maintaining good thermal conductivity.</div><div><br></div><div>### Recommended Options:</div><div>1. **Bergquist Sil-Pad 400**</div><div> - Breakdown Voltage: >4kV</div><div> - Thermal Conductivity: 1.1 W/m-K</div><div> - Operating Temperature: -60°C to +180°C</div><div> - No additional compound required</div><div><br></div><div>2. **3M 5590H**</div><div> - Breakdown Voltage: >5kV</div><div> - Thermal Conductivity: 3.0 W/m-K</div><div> - Operating Temperature: -60°C to +150°C</div><div> - Self-adhesive and no compound needed</div><div><br></div><div>3. **Keratherm Red T-441**</div><div> - Breakdown Voltage: >6kV</div><div> - Thermal Conductivity: 1.8 W/m-K</div><div> - Operating Temperature: -40°C to +200°C</div><div> - High electrical insulation and no compound required</div><div><br></div><div>These materials are widely available from electronics distributors like Digi-Key, Mouser, or RS Components. When choosing a thermal pad, ensure that it meets your thermal dissipation needs in addition to the voltage requirements.”</div><div><br></div><div>Ben</div><div><br></div><div><div><br><blockquote type="cite"><div>On 29 Jan 2025, at 19:58, Jean-Pierre Desrochers via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank" rel="noreferrer">synth-diy@synth-diy.org</a>> wrote:</div><br><div><div style="font-family:Helvetica;font-size:14px;font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif">Need a TO220 thermo pad that can withstand 130vdc without arcing..<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif">I sillicon made type that does not need any compound would do best.<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif">No mica/compound stuff.<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif">I searched on Digikey and they have a lot available but nothing stated<br>about their voltage breakdown..<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif">Any idea ?<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> 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