2N3906 Bi-Polar PNP ترانزستور

تكوين دبوس 2N3906

الميزات

• ترانزستور PNP ثنائي القطب
• DC الكسب الحالي (hFE) هو 300 كحد أقصى
• تيار المجمع المستمر (IC) هو ZKEEP0Z
• جهد قاعدة الباعث (VBE) هو ZKEEP0Z
• التيار الأساسي (IB) هو الحد الأقصى ZKEEP0Z
• جهد باعث المجمع (VCE) هو ZKEEP0Z
• الجهد الأساسي للمجمع (VCB) هو ZKEEP0Z
• متوفر في حزمة To-92

ملحوظة: يمكن العثور على التفاصيل الفنية الكاملة can على ورقة بيانات 2N3906  الواردة في نهاية هذه الصفحة.

وصف موجز عن 2N3906

2N3906 is a الترانزستور PNP hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to base pin. This is where a PNP transistor differs from a NPN transistor, a Logic state (blue colour) is used to toggle between Ground and Signal Voltage (Emitter-Base Voltage VBE) as shown below

2N3906 has a gain value of 110 to 300, this value determines the amplification capacity of the transistor. The maximum amount of current that could flow through the Collector pin is ZKEEP0Z, hence we cannot connect loads that consume more than ZKEEP1Z using this transistor. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to ZKEEP2Z.

When this transistor is fully biased then it can allow a maximum of ZKEEP0Z to flow across the collector and emitter. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (V­CE) or Base-Emitter (VBE) could be 40 and ZKEEP1Z respectively. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around ZKEEP2Z.

مكان استخدام 2N3906

The 2N3906 is a commonly used PNP transistor. It very much similar to the bc557 transistor except for that it has high collector to emitter voltage and hence high voltage loads can be toggled. This transistor has only a gain value of 300, hence not suitable for amplifier circuits.

لذلك إذا كنت تبحث عن PNP transistor that could switch high voltage loads within ZKEEP0Z then this 2N3906 transistor might be the right choice for you.

كيفية استخدام 2N3906

The 2N3906 transistor is commonly used as a switching device. When used as a switch, it can be operated in saturation region and cut-off region. In PNP transistor, by default it’s in ON state, but not to be said perfectly ON until the base pin is not grounded. If we provide ground to the base pin then the transistor will be in reverse biased and said to be turn ON. If supply is provided to the base pin it stops conducting current between emitter and collector and said to be in OFF state. For the protection of transistor a resistance added in series with it. For finding the value of that resistor you can use the formula:

Where, the value of VBE will be ZKEEP0Z for this transistor. The maximum value of providing base current is ZKEEP1Z. So, from that you can find the value of resistance to be added in series with it. In the below circuit the base emitter voltage (VBE) is ZKEEP2Z (Grounded) hence the PNP transistor conducts and the motor rotates. If made high (ZKEEP3Z) the motor will stop rotation. Note that for PNP transistors the loads should be connected in the collector side as shown below. Also note that the load current should be less than ZKEEP4Z (here ZKEEP5Z)

التطبيقات

• يستخدم لتبديل الأحمال ذات الجهد العالي والتيار المنخفض
• مثالي للأحمال ذات الجهد الأقصى العالي حتى ZKEEP0Z
• يتم استخدامه في تطبيقات التبديل المختلفة.
• تستخدم في دوائر العاكس والمحول
• تستخدم لصنع صفارة الإنذار أو Led المزدوج أو مصباح المتعري.
• يمكن استخدام Can في زوج دارلينجتون.

ورقة بيانات 2N3906