EvilmonkeyzDesignz | JEDEC TO-121 NPN Bipolar Junction Transistor @EvilmonkeyzDesignz | Uploaded June 2023 | Updated October 2024, 12 hours ago.
In this video, I take a closer look at some odd looking devices. When I first got them from Ebay, I had no idea what they were, but I suspected them to be transistors because of the three leads present. I was able to confirm that these are NPN Bipolar Junction Transistors with the help of a component tester.
I had never seen a package like this before, so I started digging to find out more information about it. After not finding anything about them, I resorted to signing up for an account on the JEDEC website, the group responsible for maintaining and creating Transistor Outline specifications, among other things. On the JEDEC website they have links to almost all of the Transistor outline specifications, starting with TO-1.
Eventually I made it to TO-121 and I found a match! The specification here shows the outline of a four-terminal device, but does allude to three-terminal devices as well, which is what I have here. The most interesting thing that I saw on the spec was that it was first released in 1967, and I'm not sure if it was ever updated after that.
The chip inside is also very interesting. The wires that were used to bond the chip to the terminals are MASSIVE, and might be the biggest that I've seen in a component of this size.
Video Chapters:
0:26 - Transistor Outline
0:42 - Opening the device
1:23 - Looking at what's inside!
2:37 - Testing the device
4:17 - Support the channel!
Quick Links!
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https://bio.site/evilmonkeyz
🔬 Join the ChipChat Discord Server!
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discord.gg/jWqwvkJgRy
Check out my Social links!
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📷 Instagram:
instagram.com/evilmonkeyzdesignz
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🎥 TikTok:
tiktok.com/@evilmonkeyzdesignz
-
🐦Twitter:
twitter.com/evilmnkyzdsignz
Stop by my website to purchase some PCBcoins, Silicon wafers, and more! Each purchase helps fund the work I am doing to document more chips.
---------------------------------------------------
🛒Website Store:
evilmonkeyzdesignz.com/new-products
All music used in this video is AI generated and licensed through a Soundful Premium Subscription.
In this video, I take a closer look at some odd looking devices. When I first got them from Ebay, I had no idea what they were, but I suspected them to be transistors because of the three leads present. I was able to confirm that these are NPN Bipolar Junction Transistors with the help of a component tester.
I had never seen a package like this before, so I started digging to find out more information about it. After not finding anything about them, I resorted to signing up for an account on the JEDEC website, the group responsible for maintaining and creating Transistor Outline specifications, among other things. On the JEDEC website they have links to almost all of the Transistor outline specifications, starting with TO-1.
Eventually I made it to TO-121 and I found a match! The specification here shows the outline of a four-terminal device, but does allude to three-terminal devices as well, which is what I have here. The most interesting thing that I saw on the spec was that it was first released in 1967, and I'm not sure if it was ever updated after that.
The chip inside is also very interesting. The wires that were used to bond the chip to the terminals are MASSIVE, and might be the biggest that I've seen in a component of this size.
Video Chapters:
0:26 - Transistor Outline
0:42 - Opening the device
1:23 - Looking at what's inside!
2:37 - Testing the device
4:17 - Support the channel!
Quick Links!
---------------------------------------------------
https://bio.site/evilmonkeyz
🔬 Join the ChipChat Discord Server!
---------------------------------------------------
discord.gg/jWqwvkJgRy
Check out my Social links!
---------------------------------------------------
📷 Instagram:
instagram.com/evilmonkeyzdesignz
-
🎥 TikTok:
tiktok.com/@evilmonkeyzdesignz
-
🐦Twitter:
twitter.com/evilmnkyzdsignz
Stop by my website to purchase some PCBcoins, Silicon wafers, and more! Each purchase helps fund the work I am doing to document more chips.
---------------------------------------------------
🛒Website Store:
evilmonkeyzdesignz.com/new-products
All music used in this video is AI generated and licensed through a Soundful Premium Subscription.
