MOTOROLA 2N4429 Power Npn Transistors Qrp Homebrew Up Hf Uhf

( Brand: Motorola ), ( Model: 2N4429 ), ( Supported Modes: Am ), ( Frequency Band S : Hf )

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

The 2N4429 Power NPN Transistors are a versatile and popular choice for various applications, particularly in the realm of QRP (Low Power) Homebrew projects, as well as in High Frequency (HF) and Ultra High Frequency (UHF) communications, including those using Motorola equipment.

These transistors are NPN type, which means they have three layers: a P-type base sandwiched between two N-type layers. The 2N4429 specifically is known for its high power handling capability, making it suitable for applications that require significant current and voltage. The collector-emitter junction can handle up to 800mA of continuous current and up to 25W of power, which is quite impressive for a small transistor.

The 2N4429 transistors have a low collector-emitter saturation voltage (Vce(sat)) of approximately 0.25V at a collector current of 100mA. This low saturation voltage means that the transistor can switch quickly and efficiently, which is beneficial in high-frequency applications.

The transistors have a maximum collector-emitter voltage (Vce(max)) of 50V, which is more than enough for most applications. The maximum collector-emitter breakdown voltage (Vce(BV)) is 100V, ensuring excellent protection against voltage spikes.

The base-emitter junction of the 2N4429 has a typical forward current gain (hFE) of 100, which means that for every 1mA of current through the base, 100mA will flow through the collector. This high gain makes the transistor an excellent amplifier in both linear and switching applications.

The 2N4429 transistors are available in a TO-92 package, which is a standard and widely used small-outline transistor package. This makes them easy to use and integrates well into most circuits.

In summary, the 2N4429 Power NPN Transistors are a powerful and versatile component, well-suited for a wide range of applications, from QRP Homebrew projects to high-frequency communication systems, including those using Motorola equipment. Their high power handling, low saturation voltage, and high gain make them an excellent choice for amplifiers and switching applications.

Pros of buying 2N4429 power NPN transistors for QRP (Quite-Powerful Radio) homebrew projects in the HF (High Frequency) and UHF (Ultra-High Frequency) bands for Motorola radios:

1. Widely available and affordable: 2N4429 transistors are commonly used and readily available in electronics stores and online marketplaces, making them an affordable option for hobbyists.

2. Robust and reliable: The 2N4429 transistor is known for its durability and reliability, making it a popular choice for radio amateurs and DIY enthusiasts.

3. Suitable for high power applications: With a maximum collector-emitter voltage of 100V and a maximum collector current of 1.2A, the 2N4429 transistor is well-suited for power amplifier applications in QRP projects.

4. Easy to use: The 2N4429 transistor is a common type and has well-documented specifications, making it easy to use and understand for beginners.

1. Limited gain: The 2N4429 transistor has a relatively low gain, which may require additional amplification stages to achieve the desired output power.

2. Limited bandwidth: The 2N4429 transistor has a limited bandwidth, which may affect its performance in high-frequency applications.

3. Limited linearity: The 2N4429 transistor has limited linearity, which may result in distortion at high power levels.

Conclusion: The 2N4429 power NPN transistor is a widely available, affordable, and reliable option for QRP homebrew projects in the HF and UHF bands. Its durability and suitability for high power applications make it a popular choice for radio amateurs and DIY enthusiasts. However, its limited gain, bandwidth, and linearity may require additional amplification stages and careful design to achieve the desired output power and performance.

Recommendation: If you are looking for a reliable and affordable power transistor for QRP homebrew projects, the 2N4429 is a good option. However, consider the project's specific requirements and design carefully to ensure that the transistor's limitations do not impact the project's performance. Additionally, you may want to consider alternative transistors with higher gain, bandwidth, and linearity if your project requires it.

Details:

Items will not be marked as ts.

You are buying on exactly what is shown in the pictures.

When feasible, combined shipping may be utilized. Combined shipping - important.

Buyer satisfaction is my number one priority.

No observed defects. Up for sale: quantity 5 2N4429 RF power amp, driver, silicon npn transistors with gold plated ribbon leads and stud.

Use in applications from hf through 1000 MHz.

The pictures are of actual items in this offer. Domestic shipping: standard first class package Local sale some items are concurrently offered for locally.

There is a spec information sheet at: insert URL here starting with remove brackets the physical condition of this item excellent. This transistor is rated at 1 watts power output MHz.

specifications hamamateuradio:

• brand: Motorola
• model: 2n4429
• supported modes: Am
• frequency band s : Hf

Shipping hamamateuradio:

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

Seller hamamateuradio:

• zipcode: 95667
• city: Placerville, California

Payments hamamateuradio:

• PayPal

General hamamateuradio:

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

Ratings:

1. Nice items AAA 01-12-18
2. Great service!!! Fast shipping!!!! 01-10-18
3. Well packed and well very well done. 5 Stars 01-20-18
4. Thanks! Purchase of OldHeathkitParts has been mailed out. AAA 01-20-18
5. Perfectly as described. Very well packed. 100% positive experience. 01-08-18

Returns hamamateuradio:

• policy: no returns

Offer hamamateuradio:

• Started: January 21, 2018, 12:36 pm
• best offer: false
• bids: 0
• Sold: 0
• quantity: 1

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