TimesVano G170DM - transient overvoltage protection : weekend die-shot

TimesVano G170DM can be found in wired phone line protection circuit. Can survive 350A current for 2µs, clamps both positive and negative voltage spikes.
Die size 3148x2292 µm.

TL432 - Shunt voltage reference : weekend die-shot

Manufacturer currently unknown. Difference between TL432 and TL431 is pinout.
Die size 810x662 µm.

RCA CD4035A - CMOS Shift Register : weekend die-shot

RCA CD4035A is a CMOS 4-Stage Parallel in / out Shift Register.
Die size 1733x1804 µm.

Zeptolab upgrade - March 2023

Thanks to the support of Zeptobars patrons - several vital hardware upgrades finally happened which will increase image quality and will make work more streamlined : custom wavelength RGB illuminator and 2-axis goniometer. Finally, we've also got Mastodon - @zeptobars@techhub.social - let's keep in touch there (just in case).


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National LM3915N-1 - "Thermometer" LED driver : weekend die-shot

National LM3915N displays analog signal on LED bar with logarithmic 3 dB/steps. Multiple LM3915N's can be cascaded to expand display dynamic range.
Die size 2394x2545 µm.

Shenzhen Fuman LM358S - general purpose opamp : weekend die-shot

0.02$ each if buying full reel. Die size 560x440 µm. Quite a bit smaller than one from Ti.


Not sure manufacturer has a website. "Founded in 2001, Shenzhen Fuman Electronics Group Co., Ltd. is a state-level high-tech enterprise engaged in the research and development, packaging, testing and sales of high-performance analog and digital-analog integrated circuits. Currently has more than 400 kinds of IC products in the field of consumption including power management, LED driver, MOSFET and so on."

Toshiba 2SK369 - low noise JFET : weekend die-shot

Toshiba 2SK369 - is a classical low noise JFET with high gm0. Similar to BF862 we see lots and lots individual transistors in parallel.
Die size 765x765 µm.