Regarding your documentation it is recomended to use heat sink HS 4003 for kit K8042. Can I have information about its thermal resistance (°C/W), perhaps manufacturer to?
I also need the same data for heat sink supplied with kit K7203.
Thank you.
Sorry, for K8042 this data does not seem to be available.
For K7203:
RTH: 2.5°C/W
dimensions: 75 x 88 x 35mm
Supplier: LDS systems.
I ordered kit K8042 with heatsink HS4003. When those were delivered, there was no M3 bolts and nuts, insulation tubes and plates etc. I forgot to put those in my order.
By the way, do I have to specify when oredering heatsinks that I need mounting and insulating devices?
Anyway, I manage to find those materials at local dealers but couldn’t find screws and spacers to mount heatsink on to the PCB. Can you please tell me what kind of screw it is used for that purpose?
Also, can I order your products directly or you supply only by local dealers? Live in Croatia, local dealer is Chipoteka.
Yes, every item has its own part number. Heatsinks are not sold as a set of parts.
You can use M3 bolts and nuts.
Sorry, no direct sales, please turn to a distributor.
I’m planning to order your kit K4003 (2 x 30 W stereo amplifier), perhaps even make my own pcb, but there’s one thing that bothers me - heatsink that looks like HS 4003, the same that I’m trying to mount unsuccessfully on a symmetric power supply pcb (K8042) using M3 bolts supplied from local dealer. But it just don’t fit. The hole on heatsink is just to big for M3 that I’ve received. Local dealer said it is M3 bolt.
Can someone please explain what’s the problem, am I making some mistake or is it manufacturing error with this sink. Btw, no one seem to know the amount of its thermal resistance - how did one select it if this data is unknown? I don’t want to be pain in someones ass, it’s Christmass and allof that, but I have tried to solve this problem last few weeks and got me nowhere. Probably something simple (stupid:-) but I’m not able to solve it. Please help. Thank you and good bless you.
Kit K4003 is supplied with heatsink and all necessary fastening hardware.
Most likely the bolts that your distributor supplied are not M3 bolts.
As for the heatsink, the data seems to be unavailable. The performance was tested under worst case conditions.