Looking for N-channel mosfet, 30V, 1A in SOT-23 or slightly larger package - Page 1
Forum section: electronics / projects

author: AndersJ
author_rank: Frequent Contributor
timestamp: November 01, 2020, 04:34:27 pm
content: I’m searching for a logic level (5V) N-channel mosfet transistor.Uds >= 30VIds >= 1ASOT-23 or slightly largerLike a 2N7002, but lower RdsonI have found the IRLML2803.There are others, but not that many.I want a fairly common jelly bean type,that is easy to purchase and preferably easily second sourced.What type would be a wise choice?

author: ogden
author_rank: Super Contributor
timestamp: November 01, 2020, 04:47:06 pm
content: You open parametric search page of your preferred distributor (digikey, mouser, arrow, farnell to name few) and find *yourself* what you need.

author: AndersJ
author_rank: Frequent Contributor
timestamp: November 01, 2020, 05:00:02 pm
content: I am familiar with parametric searches."common jelly bean type,that is easy to purchase and preferably easily second sourced"is however and unfortunately not a searchable parameter.

author: ogden
author_rank: Super Contributor
timestamp: November 01, 2020, 05:21:49 pm
content: Common jellybean MOSFET like venerable 2n7000 or 2n7002 while ago do not exist anymore . There is no single best transistor anymore but dozen of good choices. This week good choice with best price/performance in particular shop is one particular transistor but next week it could be another transistor, another shop. If I suggest you anything, other forum members will come with other suggestions and in general everybody will be right.

author: exe
author_rank: Unknown
timestamp: November 01, 2020, 05:38:24 pm
content: (my prefered one because of price and availability)http://www.aosmd.com/pdfs/datasheet/AO3400A.pdfhttps://www.onsemi.com/pub/Collateral/FDT457N-D.PDFI don't think there is a need for second source as there are plenty of similar devices on the market.

author: ogden
author_rank: Super Contributor
timestamp: November 01, 2020, 05:43:38 pm
content: Quote from: exe on November 01, 2020, 05:38:24 pmHere we go. Cheaper, smaller, higher current capacbility, lower rdson:https://www.onsemi.com/pub/Collateral/NTGS4141N-D.PDF

author: Siwastaja
author_rank: Super Contributor
timestamp: November 01, 2020, 05:45:30 pm
content: Quote from: AndersJ on November 01, 2020, 05:00:02 pmRelevant parameters: number in stock, manufacturer standard lead time.Also check at another distributor. If both Digikey and Mouser show same part with good stock, it's OKSOT-23 itself makes it second sourceable; the pinout is the same so in worst case scenario you can use another common part.

author: exe
author_rank: Unknown
timestamp: November 01, 2020, 08:57:08 pm
content: Quote from: ogden on November 01, 2020, 05:43:38 pmWhat's the price of NTGS4141N? The official site says it's $0.1273 in 3000qty. My device costs US$0.032563 in 20qty:https://lcsc.com/search?q=AO3400A. Anyway, for sure there are cheaper devices. AO3400A is not the newest or cheapest, I just have plenty of them.

author: ogden
author_rank: Super Contributor
timestamp: November 01, 2020, 10:00:57 pm
content: Quote from: exe on November 01, 2020, 08:57:08 pmYou did prove my point with flying colors