# Transistor Diagram & Facts PCB Coaster [NPN, PNP]

Drink Coaster Made Out of PCB With Transistor Diagrams and Facts

- **Seller:** [JC Devices](https://www.lectronz.com/stores/jcdevices), Palm Harbor, Florida, United States
- **Price:** $24.95 (USD, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Technology
- **Product page:** https://www.lectronz.com/products/transistor-diagram-facts-pcb-coaster-npn-pnp

## Options

**Choose Type of Coaster**

- ALL 4 Coasters - (2) Green & HASL, (2) Black & Gold [Add $11.00]
- Premium Black & Gold (2 coasters - BJT & NPN) [Add $4.00]
- Standard Green & Lead-Free HASL (2 coasters - BJT & NPN)

## Images

![Transistor Diagram & Facts PCB Coaster [NPN, PNP]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTc4MjAsInB1ciI6ImJsb2JfaWQifX0=--ec0b327d4cc7ce8fea8704959e13c5baef64e07d/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2025-04-03T19-29-10.709Z-DSC08365-enh.png)
![Transistor Diagram & Facts PCB Coaster [NPN, PNP]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTc4MjEsInB1ciI6ImJsb2JfaWQifX0=--cae37facf15d5d0417c1de9d12005b7b5d0fa332/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2025-04-03T19-31-55.007Z-DSC08366-crop-enh.png)
![Transistor Diagram & Facts PCB Coaster [NPN, PNP]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTc4MjIsInB1ciI6ImJsb2JfaWQifX0=--88d2e9b46f46424a508793cc9ff7540b0fa3da3f/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2025-03-14T14-57-41.972Z-back-callout.jpg)
![Transistor Diagram & Facts PCB Coaster [NPN, PNP]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTc4MjMsInB1ciI6ImJsb2JfaWQifX0=--4e7036a067d806a1c0b96c433f43487dec7da27e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2025-03-14T14-57-41.972Z-logo-template-coaster.jpg)
![Transistor Diagram & Facts PCB Coaster [NPN, PNP]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTc4MjQsInB1ciI6ImJsb2JfaWQifX0=--fec48b22a73b4ca5e21dbaf46f841007036b6d37/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2025-04-03T19-28-43.671Z-DSC08360-crop-enh.png)

## Description

#### What is it?

Drink Coasters Made Out of an 85x85mm PCBs, with Transistor Diagrams and Facts printed on it. Available in standard green/lead-free HASL or premium matte black & (actual) gold ENIG.

Comes as a 2-pack with one BJT NPN transistor and one BJT PNP transistor, or as a 4-pack with NPN/PNP coasters in both green and black. Originally [funded here on Kickstarter](https://www.kickstarter.com/projects/291892408/transistor-pcb-coasters).

#### Why did you make it?

I needed a place to put my drinks. I also often get confused about how transistors work. These coasters solve both problems and look awesome.

#### What makes it special?

The premium black & gold coasters feature actual gold for extra sparkle. At the same time, the green PCBs are more obviously PCBs if you want to make sure to get that fact out there. Or you can get 4-pack with all four variations (NPN/PNP green/HASL, NPN/PNP black/ENIG), giving you the correct coaster for any situation.

It's sure to impress those that are technically minded, and it keeps tables/desks dry to satisfy those that respect wood.