WikiCards · Card list · Science cards · Bipolar junction transistor
Uncommon card · Science
Bipolar junction transistor, an Uncommon card
A bipolar junction transistor is a type of transistor that uses both electrons and electron holes as charge carriers.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 77
- DEF
- 71
- Power
- 148
- Wikipedia reads a year
- 130,000
Power 148 (ATK + DEF): stronger than 75 % of WikiCards cards.
Bipolar junction transistor quiz: 3 questions
Three questions on the Bipolar junction transistor card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
In contrast, a ______ transistor, such as a field-effect transistor, uses only one kind of charge carrier.
Answer
unipolar. In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier. From the Bipolar junction transistor article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Valparaíso. Valparaíso 84 · Bipolar junction transistor 77 · Metallurgy 74 · Wilhelm Röntgen 70 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier.
- A bipolar transistor allows a small current injected at one of its terminals to control a much larger current between the remaining two terminals, making the device capable of amplification or switching.
- BJTs use two p–n junctions between two semiconductor types, n-type and p-type, which are regions in a single crystal of material.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Bipolar junction transistor article was read about 130,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 77 and blocks with 71: each hit it takes is cut by 28 %.
How to get Bipolar junction transistor
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Bipolar junction transistor in the power ranking, all domains together.
- ValparaísoUncommon · Society · ATK 84 DEF 64
- BalladUncommon · Arts · ATK 70 DEF 78
- MetallurgyUncommon · Science · ATK 74 DEF 74
- BatamUncommon · Society · ATK 75 DEF 73
- BurgasUncommon · Society · ATK 76 DEF 72
- Civil serviceUncommon · Society · ATK 79 DEF 69
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Bipolar junction transistor (revision), CC BY-SA 4.0. Photo : Mister rf at English Wikipedia, CC BY-SA 3.0, Wikimedia Commons.




