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Zener Diode Part List

Chenxiang Hsu — Mon, 22 Feb 2010 04:59:37 +0000

Recently, I use some zener diode as a reference source to drive my comparator circuit.

So I made a Zener Diode List which from my "Search Job".

Here is the spreadsheet:

1N4099  ~ 1N4135
LOW CURRENT OPERATION 6.8V@250uA IZT
LOW REVERSE LEAKAGE AND LOW NOISE CHARACTERISTICS
1N4158 ~ 1N4193
6.8V@37mA IZT

1N4400 ~ 1N4426
6.8V@37mA IZT

1N4614 ~ 1N4627

1N4678 ~ 1N4717

1N4728 ~ 1N4763

1N5225 ~ 1N5281

1N5333B~1N5388B

They are all Zener Diode, which can be easily got the stores. Here is a PDF which covers all diode

Study Notes | Cadence Allegro SPB

Chenxiang Hsu — Tue, 05 Jan 2010 05:23:45 +0000

After nearly 3.5 years working in Creative, I finaly decided to change a job with more challenge which I never encoutered.

In a new company, I decide to use OrCAD + Allegro to finish all projects. In next 3~4 weeks, I will write some notes about how to use Allegro to draw a PCB Board. Orcad is somebit of easy job for me because of that I've used a lot with the pspice simulation jobs.

Topic which covers: (Updated 2010-03-29)

1. How to draw Component’s footprint in Allegro

2. How to link a Component’s footprint with a schematic's symbol

3. How to Draw a board outline

4. How to Import a netlist from Capture

Study Notes | High Speed PCB Layout Guideline

Chenxiang Hsu — Mon, 04 Jan 2010 08:53:24 +0000

As you all know, I am a heavy search-depent person which got almost information from Google. So in my last year, I give a present a KeyNote to my colleagues on the Topic of "How to Google Everything".

And as an electronics engineer myself, I also have collected many design rule from Internet. Most of them coming from Semiconductor Corp (TI, NSC, LT, Onsemi, ... ). So here I gave my version of PCB Design GuideLine.

It will be the first one of my series Guide Book called - TGuide Book Series.

So Here is the 1st one. High Speed PCB Layout Guide Book

High Speed PCB Layout Guide Book

Written by Chenxiang Hsu

Part 1: