jelly bean MOSFET - Page 1
Forum section: electronics / general

author: PerranOak
author_rank: Frequent Contributor
timestamp: October 08, 2020, 05:03:40 pm
content: I use 2N2222 and 2N2907 all the time as jelly bean BJTsWhat are the equivalent jelly bean (for low power digital stuff) MOSFETs?Cheers.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: October 08, 2020, 05:58:55 pm
content: Recent thread:https://www.eevblog.com/forum/projects/jelly-bean-logic-level-fast-switching-transistor-bjtfet/Tim

author: David Hess
author_rank: Super Contributor
timestamp: October 10, 2020, 10:00:11 pm
content: Except for the 2N7000, I do not think any reached jelly bean status.

author: PerranOak
author_rank: Frequent Contributor
timestamp: October 11, 2020, 09:40:15 am
content: Ah. Then ... any recommendations?

author: magic
author_rank: Super Contributor
timestamp: October 11, 2020, 10:00:10 am
content: BSS138/84 are somewhat common in hobby projects as far as SMD goes. Not extraordinarily great.

author: Whales
author_rank: Super Contributor
timestamp: October 11, 2020, 10:31:29 am
content: TO-92 N-channel: 2n7000TO-92 P-channel: nothing cheap or common!My guess is that good discrete mosfets started coming out after SMD became the popular commercial target. TO-92 BJTs have kept going becausepartlybecause of momentum.SOT23 P-channels are really cheap but of course are not breadboard compatible. This sucks because one of the primary use cases of discrete transistors is analog circuits, which tend to require a lot of tweaking. I've had some consolation in findingsot23 are much easier to quickly solder into prototypes than I thought, but it's still not as fast or convenient as solderless.

author: exe
author_rank: Unknown
timestamp: October 11, 2020, 01:26:16 pm
content: I use sot23 breakout boards when prototyping, such ashttps://www.aliexpress.com/item/1378346623.html.As of "jelly bean", I just buy those from lcsc that have the cheapest price with parameters I need. I have quite a few fets from Alpha&Omega, such as AO3400A (nfet), AO3403 (pfet), etc. I also have devices from vishay, onsemi, ti, etc... Mosfets are cheap, and variety is huge, so wouldn't bother with hunting a particular part number.

author: Peabody
author_rank: Super Contributor
timestamp: October 11, 2020, 02:11:18 pm
content: So far as I know, there aren't any TO92 mosfets with low RDSon. So if you need that, an SOT part with a breakout DIP adapter is the way to go. But in TO92, I think the 2N7000 and the higher current BS170 are widely used N-channels. I don't think any specific P-channels have reached that level of popularity. The Wikipedia entry for the 2N7000 says the BS250P is a complement for it, but I usually use the TP2104.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: October 11, 2020, 09:31:36 pm
content: There's a few, the classics being the VN something or other. Also there was that TO-92 with metal tab sticking out the top, I forget what that package number is. Some new parts:https://www.digikey.com/short/znc0dbTim

author: WattsThat
author_rank: Frequent Contributor
timestamp: October 11, 2020, 09:55:52 pm
content: Quote from: T3sl4co1l on October 11, 2020, 09:31:36 pmThat was the TO-237. VN10KM and others.http://pdf.datasheetcatalog.com/datasheets/newjerseysemiconductor/VN10KM.pdf