MOTOROLA 2N4127 Power Npn Transistors Qrp Homebrew Up Watts To 13.5 Hf Uhf

( Brand: Motorola ), ( Model: 2N4127 ), ( Supported Modes: Am ), ( Frequency Band S : Hf )

Review MOTOROLA Power Npn Transistors Qty Qrp Homebrew Up 13.5 Watts Output Hf Uhf

The 2N4127 Power NPN Transistors are a versatile and reliable choice for various applications, particularly in the realm of QRP (Quite Portable, quite Powerful) homebrew projects, including operation in the HF (High Frequency) and UHF (Ultra High Frequency) bands. These transistors are widely used in Motorola and other communication systems due to their robust performance and reliability.

The 2N4127 is a general-purpose NPN (Negative-Positive-Negative) power transistor. It features a collector-emitter voltage rating of 40V, a collector current rating of 1.2A, and a maximum power dissipation of 75W. This combination of specifications makes it an excellent choice for power amplifiers, switch-mode power supplies, and other applications where high power and voltage handling are required.

The transistors have a typical forward current gain (beta) of 100, ensuring efficient current amplification. They also feature a high-frequency cutoff frequency (fT) of 100MHz, enabling them to handle high-frequency signals with minimal distortion.

The 2N4127 transistors are known for their low noise and excellent linearity, which are essential qualities in communication systems. They also have a high-temperature coefficient of beta, ensuring stable performance even under extreme temperature conditions.

These transistors are packaged in a TO-39 metal can, which provides excellent heat dissipation, ensuring the transistor stays cool even under high power operation. The TO-39 package also allows for easy mounting and wiring.

In summary, the 2N4127 Power NPN Transistors are a reliable and robust choice for QRP homebrew projects, communication systems, and other applications requiring high power and voltage handling. Their low noise, excellent linearity, and high-frequency capabilities make them a preferred choice for many engineers and hobbyists.

1. Wide Bandwidth: The 2N4127 transistors have a wide bandwidth, making them suitable for a variety of frequencies in the HF and UHF bands.

2. High Power Handling: These transistors can handle up to 13.5 watts of power, making them suitable for QRP (low power) applications.

3. Low Cost: Compared to other power transistors, the 2N4127 is relatively inexpensive, making it a cost-effective option for hobbyists and amateur radio operators.

1. Limited Current Handling: While the 2N4127 can handle up to 13.5 watts of power, its current handling is limited to around 500mA, which may not be sufficient for high current applications.

2. Limited Linearity: The 2N4127 transistors may exhibit some distortion at high power levels, which can affect the quality of the transmission.

3. Availability: The 2N4127 transistors may not be as widely available as other power transistors, which could make it more difficult to find them in stock or at a reasonable price.

Overall, the 2N4127 power NPN transistors are a cost-effective and suitable option for QRP homebrew applications up to 13.5 watts of power in the HF and UHF bands. While they may have some limitations in terms of current handling and linearity, these issues are typically not a concern for low power applications. If you are looking for a transistor that can handle more current or offer better linearity, you may want to consider other options. However, if you are on a budget or looking for a reliable option for low power applications, the 2N4127 is a good choice.

If you are looking to build a QRP homebrew transmitter up to 13.5 watts of power in the HF or UHF bands, I would recommend considering the 2N4127 power NPN transistors. They are widely available, have a good power handling capacity, and are relatively inexpensive. However, be sure to consider the limitations of the transistor and ensure that it is suitable for your specific application. You may want to consider using multiple transistors in parallel to increase the current handling capacity or use a linear amplifier to improve the linearity of the transmission.

Details:

Local sale some items are concurrently offered for locally. They are and that is normal.

When feasible, combined shipping may be utilized.

Domestic shipping: standard first class package 5 watts power output from hf through 300mhz vhf uhf. The pictures are of actual items in this offer.

This call before turn on requirement avoids many set up mistakes that might cause a component to fail prematurely. Buyer satisfaction is my number one priority.

Good buying luck. This sale is for quantity 5 - 2N4127 RF power amp, driver, silicon npn transistor with gold plated ribbon leads.

This transistor is rated at 13. Combined shipping - important.

Items will not be marked as ts.

PDF the physical condition of this item is new excellent. You are buying on exactly what is shown in the pictures.

Even with excellent packing, these vintage items may be exposed to severe vibration or shock during transit which cause a connection separate component break.

SDI spl transis retrain RF transistors.

specifications hamamateuradio:

• brand: Motorola
• model: 2n4127
• supported modes: Am
• frequency band s : Hf

Offer hamamateuradio:

• quantity: 100
• Sold: 0
• best offer: true
• Started: May 18, 2018, 7:52 am
• bids: 0

Ratings:

1. Great communication. A pleasure to do business with. 05-06-18
2. I bought they nice price 04-27-18
3. great seller 04-28-18
4. I am completely satisfied. 05-02-18
5. Great seller, Very Pleased, Rapid shipping, Highly recommended, Thank You, AA 05-09-18

Shipping hamamateuradio:

• handling: 1 days
• type: Flat
• cost: $3.0

Payments hamamateuradio:

• PayPal

Seller hamamateuradio:

• city: Placerville, California
• zipcode: 95667

Returns hamamateuradio:

• policy: no returns

General hamamateuradio:

• condition: New other see details
• in stock: Yes
• consumer electronics > radio communication electronics > ham amateur radio communication

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