The 1Nx or 1N or 1N [2] series is a family of popular 1 A general-purpose silicon rectifier diodes commonly used in AC adapters for common household appliances. Its blocking voltage varies from 50 volts 1N to volts 1N These diodes are typically available in the larger DOAD axial package to dissipate heat better. The 1Nx series was originally introduced by Motorola 's Semiconductor Products Division and registered at JEDEC in , as silicon power rectifiers primarily for military and industrial applications. These devices are widely used and recommended for general-purpose use. The following table lists part numbers in the 1Nx, 1Nx, and other popular general-purpose silicon rectifier diode families.

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Interestingly, these devices are not consistently oriented. This 1N rectifier has the brim on the anode end, whereas most of the rest we found had it on the cathode end. All of them had the orientation clearly marked. This one really looks like a top hat.

It looks just like a candy button. According to radiomuseum. And finally, a package type that can still be found today. The red sections are surfaces of metal possibly kovar that are directly embedded within the glass. If you look very closely or click over to flickr for the huge version , you can see the S-shaped ribbon of gold, and even identify the shiny semiconductor die to the left of the ribbon.

To my Knowledge the 1N is a normal diode not a Zener diode. The Fairchild data sheet claims that this is a high speed diode with an operating reverse voltage of 25V and a breakdown voltage of 35V.

Actually I got confused with the 1N — 1N row more or less the same diode with different reverse-voltage ratings. I thought the row continues up to 9. Watch those current ratings, kids. Re: orientation of top hat and stud mounted diodes. It is not uncommon to find two diodes with the same specs, different number, and one of those two is reversed polarity. This enables you to bolt on in the case of top hat -pressure fit the tow together on a heat sink to for the top or bottom half of a bridge diode, using the mechanical connection as the electical connection.

The backwards diodes are called reverse polarity. Pretty diodes. Germainium diodes are real collectors items, but I imagine anyone who makes a hobby of collecting germainium diodes has a rather pathetic life.

There were several varieties of top hat diodes, like this 1N Bookmark the Permalink. Thanks- corrected. I turned a glass encapsulated diode, similar to that last one, into a LED, once.

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National Semiconductor



1N400x general-purpose diodes


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