right, time for a game of What's In The Box?

I did a big LCSC order of random bits that were on offer back in 2022, and then promptly forgot I owned any of this stuff, as I often do.

let's see what's in here.

first up, three Alps Alpine EC20A1820407 rotary encoders.

https://www.lcsc.com/product-detail/Rotary-Encoders_ALPSALPINE-EC20A1820407_C470682.html

these are *very* satisfyingly clicky. Alps Alpine make some great stuff. at some point I wanna use these for a custom MagicQ control surface

three TVP5146M2PFP video encoders, and three TVP5151PBSR video decoders.

https://www.lcsc.com/product-detail/Video-Interface-ICs_Texas-Instruments-TVP5146M2PFP_C111865.html

https://www.lcsc.com/product-detail/Video-Interface-ICs_Texas-Instruments-TVP5151PBSR_C189189.html

I forgot all about the project I got these for! want to build a multi-channel videobending / glitching platform.

ten each of PI3PCIE3415ZHE and PI2SSD3212NCEX analog muxes. I believe these were also for that video project.

https://www.lcsc.com/product-detail/Analog-Switches-Multiplexers_Diodes-Incorporated-PI3PCIE3415ZHE_C212313.html

https://www.lcsc.com/product-detail/Analog-Switches-Multiplexers_Diodes-Incorporated-PI2SSD3212NCEX_C211362.html

ten SSR027000I3CH crystal oscillators, and ten ABM2-14.31818MHZ-D4Y-T 14.31818MHz crystals.

I think these were also for the video project? that seems like a vaguely video-ish frequency.

https://www.lcsc.com/product-detail/Oscillators_HELE-Harmony-Elec-SSR027000I3CH_C254230.html

https://www.lcsc.com/product-detail/Crystals_Abracon-LLC-ABM2-14-31818MHZ-D4Y-T_C313029.html

six of these KF206-7.5-7P spring clamp terminal blocks.

pay attention to the dimensions here. these are LARGEBOIS. each port can fit a 10AWG wire.

I got these on a 90%-off offer, so they were just $0.29/pc. I am a fan of big chungus power electronics and will definitely find a use for them.

https://www.lcsc.com/product-detail/Spring-Clamp-System-Terminal-Block_Cixi-Kefa-Elec-KF206-7-5-7P_C475244.html

an ZLG ZY0JGB05D-15W AC-DC module. 5V/3A out.

pretty large for that amount of power delivery tbh, given how compact modern GaN stuff is. but again I got it at 90% off, so an absolute bargain.

https://www.lcsc.com/product-detail/Power-Modules_ZLG-Zhiyuan-Elec-ZY0JGB05D-15W_C135914.html

two Heniper PA15G-220S12 and two Heniper PA20G-220S12, which are 15W and 20W respectively, AC/DC converters with 12V output.

no link 'cos they've since been discontinued at LCSC and the listings are gone.

same rough size as the 5V/3A one above. again got them extremely cheap.

being 12V out, these are pretty useful. much smaller than those cheap AliExpress supplies with similar power outputs.

three MAX11136ATI+ 8ch 12-bit 500kS/s SAR ADCs.

these are £5.34 ex.VAT from Mouser right now. I paid $0.56/pc!

https://www.lcsc.com/product-detail/Analog-To-Digital-Converters-ADCs_Maxim-Integrated-MAX11136ATI_C490306.html

@gsuberland Goddamn you really got those at a discount. Maxim chips are always hella expensive for what they do.

ten of these 2mΩ current sense resistors. they can handle 7W. if you do the maths, that's nearly 60A.

they're ±5% which is rather surprising. but pretty low thermal coefficient so that can be calibrated out.

https://www.lcsc.com/product-detail/Current-Sense-Resistors-Shunt-Resistors_Shenzhen-Yezhan-Elec-ASR-K-7-2J-t_C503786.html

ten each of SBB-M-1F-n-t5 and SBB-M-1J-n-t1.

again, big boi shunt resistors.

https://www.lcsc.com/product-detail/Current-Sense-Resistors-Shunt-Resistors_Shenzhen-Yezhan-Elec-SBB-M-1F-n-t5_C469461.html

https://www.lcsc.com/product-detail/Current-Sense-Resistors-Shunt-Resistors_Shenzhen-Yezhan-Elec-SBB-M-1J-n-t1_C503800.html

with all those fat shunt resistors you'd think I'd have bought some big power electronics parts too.

and you'd be correct.

exhibit A: an IXYS IXTQ170N10P MOSFET. it's 100V/170A and 9mΩ of Rds(on) @ 10V, in a hefty TO-3P-3 package.

https://www.lcsc.com/product-detail/MOSFETs_IXYS-IXTQ170N10P_C461330.html

@gsuberland Chonque

also an ST STB200NF04T4, which is rated for 40V/120A and 3.7mΩ of Rds(on) @ Vgs=10V.

this isn't a super remarkable MOSFET aside from having very low Rds(on). I think I ordered it with the idea of maybe sending it to someone for decapping, because I was intrigued by "Single Feature Size strip-based process" in the datasheet? can't remember though.

https://www.lcsc.com/product-detail/MOSFETs_STMicroelectronics-STB200NF04T4_C221455.html

@gsuberland The fact that those leads, whichever one happens to be the drain, can handle up to 120 amperes in that package is kind of mind-boggling.

a few* of these DMG7408SFG-7 30V/7A 23mΩ@10V N-ch FETs.

these are mostly notable for being quite small (3.2x3.2mm) given their high current rating. they're also reasonably fast (<11ns switch on + rise, <18ns switch off + fall).

I also just noticed they have a pretty low transconductance (11S typ) which makes them potentially interesting for linear operation (e.g. in a current balancing config) although the thermals would be a bit of a challenge in this package.

https://www.lcsc.com/product-detail/MOSFETs_Diodes-Incorporated-DMG7408SFG-7_C508199.html

also a few IGBTs for good measure.

onsemi HGTG40N60B3 and FGH60N60SMD-F085. paid under $1 for each.

I mostly got these 'cos I don't do enough with IGBTs and thought that buying these might give me a reason to build a little IGBT driver.

as you can tell by the fact this box arrived in 2022 and I'm only just getting round to looking at what's in the box, it was a very effective strategy.

https://www.lcsc.com/product-detail/IGBTs_onsemi-FGH60N60SMD-F085_C475772.html

https://www.lcsc.com/product-detail/IGBTs_onsemi-HGTG40N60B3_C463280.html

these are an interesting find.

onsemi NSV45060JDT4G 100mA / 45V LED drivers. they're basically chunkier versions of the classic TL431. I got ten of them for under $0.10/pc.

kinda wish I had bought more, these looks fun.

https://www.lcsc.com/product-detail/LED-Drivers_onsemi-NSV45060JDT4G_C457767.html

oh and apparently I bought a bunch of these 24x10x100mm heatsinks, which I vaguely recall thinking about thermal-epoxy'ing to a row of... something? I don't know which parts. probably the LED drivers.

https://www.lcsc.com/product-detail/Heat-Sinks_XSD-C35538_C35538.html