• Home
  • About Us
  • Contact Us
Semiconductor for You
  • Home
  • Semiconductor News
  • Technology
    • Automotive
    • Consumer Electronics
    • IoT
    • Lighting
    • Power Management
    • Wireless
    • Personal Electronics
    • Hardware & Software
    • Research
    • Medical Electronics
    • Embedded Design
    • Aerospace & Defence
    • Artificial Intelligence
  • DIY Projects
  • Market
  • Industries
    • Renesas Electronics
  • Knowledge Base
  • Events
  • Tools
    • Resistor Color Code Calculator
No Result
View All Result
  • Home
  • Semiconductor News
  • Technology
    • Automotive
    • Consumer Electronics
    • IoT
    • Lighting
    • Power Management
    • Wireless
    • Personal Electronics
    • Hardware & Software
    • Research
    • Medical Electronics
    • Embedded Design
    • Aerospace & Defence
    • Artificial Intelligence
  • DIY Projects
  • Market
  • Industries
    • Renesas Electronics
  • Knowledge Base
  • Events
  • Tools
    • Resistor Color Code Calculator
No Result
View All Result
Semiconductor for You
No Result
View All Result
Home Knowledge Base

2N2646 Uni Junction Transistor & Its Working

Mrinali Sharma by Mrinali Sharma
August 26, 2022
in Knowledge Base
0
  • N2646 is a general-purpose silicon PN Unijunction Transistor that is designed for general-purpose industrial applications.
  • This transistor is made out of n-type semiconductors, with the length of the p-type material controlled to help fix the intrinsic standoff ratio parameter. Emitter, base, and collector are the three terminals on a typical 2n2646 UJT.
2N2646 Uni Junction Transistor

Pin Configuration

Pin Name Description
1 Base 1 Normally connected to Power
2 Emitter An emitter is used for triggering transistor ON and OFF
3 Base 2 Normally connected to Load

Working

1. When the Emitter is Open

  • When the voltage VBB is applied with the emitter open, a potential gradient is established along the n-type silicon bar.
  • The voltage V1 (between emitter and B1) establishes a reverse bias on the PN-junction.
  • Emitter current is cut off, but a small leakage current flows from B2 to emitter due to minority charge carriers.
When the Emitter is Open
  • Thus, the device is said to be in an OFF state.

2. With Emitter at Positive Potential

  • When a positive voltage is applied at the emitter terminal, the PN-junction will remain reverse biased till the input voltage is less than V1.
  • The PN-junction becomes forward-biased when the input voltage at the emitter exceeds V1.
  • Under this condition, holes are supplied from the p-type region into the n-type bar, due to this saturation of charge carriers occur.
  • The emitter current is limited by the emitter power supply because of this saturation.
With Emitter at Positive Potential
  • Now, the device is conducting, hence said to be in ON state.

Characteristics of 2N2646 Uni Junction Transistor

  • Low Peak Point Current: 5mA (Max).
  • Low Emitter Reverse Current:005mA (Typ).
  • Maximum voltage between two bases (VB2B1): 35V.
  • Maximum emitters reverse voltage (VB2E): 30V.
  • Maximum RMS emitter current (Ie): 50mA.
  • Maximum peak emitter current (Ie): 2A.

Applications of 2N2646 Uni Junction Transistor

  • Timing circuit.
  • Voltage detector.
  • Phase control circuit.
  • General-purpose industrial applications.
Content Protection by DMCA.com
Mrinali Sharma

Mrinali Sharma

Browse by Category

  • Aerospace and Defence
  • Articles
  • Automotive
  • Consumer-Electronics
  • Hardware & Software
  • Interview
  • IoT
  • Knowledge Base
  • Lighting
  • Market
  • personal-electronics
  • Power Management
  • Research
  • Semiconductor Events
  • Semiconductor News
  • Technology
  • Wireless
Semiconductor for You

Semiconductor For You is a resource hub for electronics engineers and industrialist. With its blend of
technology features, news and new product information, Semiconductor For You keeps designers and
managers up to date with the fastest moving industry in the world.

Follow Us

Browse by Category

  • Aerospace and Defence
  • Articles
  • Automotive
  • Consumer-Electronics
  • Hardware & Software
  • Interview
  • IoT
  • Knowledge Base
  • Lighting
  • Market
  • personal-electronics
  • Power Management
  • Research
  • Semiconductor Events
  • Semiconductor News
  • Technology
  • Wireless

Recent News

Sentry Enterprises and Infineon collaborate to fuel biometric access control and cold storage crypto wallet platforms

Sentry Enterprises and Infineon collaborate to fuel biometric access control and cold storage crypto wallet platforms

January 26, 2023
Renesas Introduces New Gate Driver IC for IGBTs and SiC MOSFETs Driving EV Inverters

Renesas Introduces New Gate Driver IC for IGBTs and SiC MOSFETs Driving EV Inverters

January 26, 2023
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2022 Semiconductor For You

No Result
View All Result
  • Home
  • Semiconductor News
  • Technology
    • IoT
    • Wireless
    • Power Management
    • Automotive
    • Hardware & Software
  • Market
  • Knowledge Base
  • Tools
    • Resistor Color Code Calculator

© 2022 Semiconductor For You

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
Cookie settingsACCEPT
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT