BD131 Transistor Pinout, Equivalent, Applications, Features and More

BD131 is a TO-126 package NPN general purpose transistor, in this article we are going to understand BD131 transistor pinout, equivalent, applications, features and more.

Absolute Maximum Ratings:

• Package Type: TO-126
• Transistor Type:  NPN
• Max Collector Current(I_C): 3A
• Max Collector-Emitter Voltage (V_CEO): 45V
• Max Collector-Base Voltage (V_CBO): 70V
• Max Emitter-Base Voltage (V_EBO): 6V
• Max Collector Power Dissipation (P_C): 15W
• Max Transition Frequency (f_T): 60 MHz
• Minimum & Maximum DC Current Gain (h_FE): 40 (Minimum)
• Max Storage & Operating temperature Should Be: -65 to +150 Centigrade

 

PNP Complimentary:

The PNP complimentary of BD131 is BD132

 

Replacement and Equivalent:

BD133, 2SD487, 2SD2038, 2SD2035, 2SD1813, 2SD1716, 2SD1714, 2SD1712, 2SD1706, 2SD1704, 2SD1311, 2SD1289, MJE803G, MJE802G.

 

BD131 Transistor Explained / Description:

BD131 is a TO-126 package NPN transistor designed to be used in general purpose power applications. The transistor features good collector-emitter voltage, good collector current, upto 150W total power dissipation, and availability of its complimentary pair.

Looking at the pin layout of the transistor the first pin is emitter, second pin is collector and third pin is base.

Understanding the absolute maximum ratings of the transistor:

Absolute maximum ratings are the maximum limits of the transistor and we should always stay under these limits. Going beyond these limits can immediately damage the transistor or weak its performance. The max collector current is 3A DC and 6A peak. The collector current is the maximum load current the transistor can drive. The maximum collector-emitter voltage is 45V, means the transistor can drive load voltage of upto 45V, the collector-base voltage is 70V which means that voltage between collector and base should be under this limit. The max emitter-base voltage is 6V means it should not exceed this limit. The total power dissipation of 15W shows how much heat dissipation this transistor can survive.

 

Applications:

Battery charger circuits

Switching Circuits

Audio Amplifiers

Solar Circuits

Motor Driver Circuits

PWM controller Circuits

Voltage Regulators

Variety of General Purpose Applications

 

Safe Operating Guidelines:

Here are some guidelines to use the transistor wisely.

• To safely operate the transistor always use it 20% below from its absolute maximum ratings.
• The max collector-emitter voltage is 45V but as the above 20% rule we will not drive load of more than 36V.
• The max collector current is 3A but we will stay under 2.4A.
• Storage temperature should be between -65°C to 150°C.

 

Datasheet:

To download the datasheet just copy and paste the below link in your browser.

https://www.alldatasheet.com/datasheet-pdf/view/16167/PHILIPS/BD131.html