On Thursday, February 21, 2013 11:03:51 AM UTC-5, wrote:
On Wed, 20 Feb 2013 15:10:43 -0800 (PST), John-Del

wrote:



It's an smd device with six legs, three on each side, about the size of an SOT23 transistor. Here's what it looks like:



http://www.icbank.com/icbank_data/se.../tsop6_dim.pdf



It's used in the primary side of a smps regulator on a power supply board. The board legend calls it an IC, but I've seen similar devices marked as transistors, and it looks like a transistor array. The markings on the device are KP 358, with an "I" in a box preceding the KP. If I Google just that number, Google returns datasheet sites, but they don't have any information about it.



I have another identical working supply, but the IC in the same location has 6M944a on the device. The boards are otherwise identical, so these two devices appear to be interchangeable. Neither Mouser or DigiKey seem to have anything on it.



If anyone knows what this is, what it subs to, or even a missing prefix or suffix to help identify this thing, I'd really appreciate it.



That COULD be a smps controller. While they are usually 8 pin

devices, 6 pin devices are often found.



It's been said many times, many ways; a single picture is worth a

thousand words.



PlainBill

You're probably correct Bill. I took another look at that board today, and there is no discernible controller IC on that particular leg, so that six pinner could be the smps control. I sent Megmeet an email asking for a schematic and parts ID, but I know they're going to blow me off on this. Meanwhile, I found another junk power supply from Megmeet that is a different, older board, and it has what looks like the same IC, but has a different number (DP50A). It checks the same ohm wise and diode wise, so I'm going to toss that in the board I need to run. Thanks for the info.