Need European Rep.

1998-06-08 Thread Gary Labadie
I have a product that is CE marked. It is designed exclusively for an OEM to be sold into the European Union. The OEM wishes not to be the holding company at this point. Since, it is designed for an OEM account, I cannot use are standard sales channels of reps and distributors to hold

Re: isolation of TO-220 package

1998-06-08 Thread Dwight Hunnicutt
Edward/Doug/et.al.- Any sources for those special clips? I've seen metal spring clips also... And how about sources for the grey insulating sleeving/tubing that slips over the entire TO-220 package, providing insulation and good thermal transfer, and allowing use of a metal clip? The sleeving

Re: isolation of TO-220 package

1998-06-08 Thread HMellberg
There used to be a special plastic shoulder washer used in exactly this application (The washer has a crossection resembling the letter T). This solved the clearance and creepage problem. It fits inside the hole of the TO-220. Hans

isolation of TO-220 package

1998-06-08 Thread Edward Eszlari
Moshe, The best way that I have seen is to use a thermally conductive isolation pad between the rear of the transistor and the chassis. The pad should extend beyond the conductive part of the component so creepage distances are maintained. The transistor would be held tight to the chassis by a

RE: isolation of TO-220 package

1998-06-08 Thread POWELL, DOUG
Moshe, I also have used an number of TO-220 transistor packages. In the past to get the isolation I used thin ceramic substrate. Several things were done to provide the 1.5 MM required. 1) a shoulder washer was used on the screw, 2) there was a counter-bore in the heat sink to provide a

RE: isolation of TO-220 package

1998-06-08 Thread James, Chris
Somewhat depending on what creepage and clearance you are trying to acheive I'd have thought it difficult to maintain good thermal conductivity and meet cc requirements. Better to have an isolated heatsink for the high voltage parts. -Original Message- From:

RE: covers over connectors (IEC1010)

1998-06-08 Thread James, Chris
For EN 60065 or 60950 Covers or access to hazardous voltages must not be accessible without the use of a tool, so clips etc. are not satisfactory. A screwdriver constitutes a tool so screws are the simplest fixing. -Original Message- From: moshe_valdman_at_isr-rhv...@mail.nsix.co.il

covers over connectors (IEC1010)

1998-06-08 Thread moshe_valdman_at_isr-rhv-p1
Hello everyone, To avoid contact with hazardous voltage in some connectors I need to cover them. I have 2 questions regarding this: 1. Is it OK for the covers to be removed without a tool? (i.e. held not by a screw but with some kind of reliable clip) 2. What should be marked/written on the

isolation of TO-220 package

1998-06-08 Thread moshe_valdman_at_isr-rhv-p1
Hello everyone, The following problem has probably several solutions, some of which I've seen implemented in power supplies. PROBLEM: In many applications the metal part of the TO220 package (that's the square with metal backing and 3 legs in a row) is (or should be considered) under live