Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Don Y Newsgroups: sci.electronics.design Subject: Declining datasheet quality Date: Tue, 30 Apr 2024 17:53:18 -0700 Organization: A noiseless patient Spider Lines: 17 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 01 May 2024 02:53:23 +0200 (CEST) Injection-Info: dont-email.me; posting-host="99480789149289728870ac0e36ed7d38"; logging-data="2928972"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+dPkI9PrBZpFmeSh1/vCV3" User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Cancel-Lock: sha1:6l6ZYl3OYOlRLMII/yo1Pji2VXw= Content-Language: en-US Bytes: 1675 A colleague teaching a STEM course asked me for some details on WS2812's. Digging through the datasheets I've been able to find seems like they are sold only to hobbyists -- or, at least not to folks who have to *design* with them! I can't seem to find any specification of Icc -- at MAX (255.255.255) intensity and "dark" (0.0.0). Nor anything giving thermal characteristics of the package beyond ambient (70C) and max junction temperature (80C) -- I suspect it wouldn't be hard to melt the things if they dissipate any appreciable amount of power! Is this the "typ" trend taken to its logical extreme (where we don't really care how it MIGHT work in a given environment, beyond "try it and see"?)