MOTOROLA MRF644 Nos Npn Fm Vhf Uhf

( Brand: Motorola ), ( Manufacturer Part Number: MRF644 ), ( Country/region Of Manufacture: Unknown )

Review MOTOROLA Nos Free Npn Qty Fm Tested Vhf Shipping Uhf

The MRF644 Motorola NOS (New Old Stock) NPN (Normally Open PNP) FM (Frequency Modulation) VHF (Very High Frequency) Transistor is a versatile electronic component that serves as a vital component in various radio frequency (RF) applications. This transistor boasts a frequency range of 54-108 MHz for VHF, making it an ideal choice for FM radio, television, and two-way radio systems.

The MRF644 is a NPN transistor, which means it is normally in an off state and requires an external signal to switch it on. It is constructed using the NPN silicon planar technology, ensuring excellent reliability and performance. The transistor features a maximum collector-emitter voltage (VCE) of 25V, a maximum collector current (IC) of 250mA, and a maximum collector-emitter power dissipation (PCE) of 0.625W.

The MRF644 is known for its low noise figure, which is critical in radio frequency applications. Its noise figure is typically less than 5dB, ensuring clear and crisp audio output. The transistor also has a high gain, which means it can amplify the input signal effectively, improving the overall performance of the system.

The MRF644 is a compact device, with a small footprint of 3mm x 2.2mm, making it easy to incorporate into various electronic designs. It is housed in a TO-92 plastic case, which is resistant to moisture and other environmental factors.

In summary, the MRF644 Motorola NOS NPN FM VHF Transistor is a reliable and high-performance electronic component that is ideal for various RF applications. Its low noise figure, high gain, and compact size make it a popular choice among electronic engineers and hobbyists. Whether you're building a FM radio, a television receiver, or a two-way radio system, the MRF644 is an excellent component to consider.

The MRF644 Motorola NOS NPN transistor is a popular choice for VHF and UHF applications due to its high power handling capability and excellent frequency response. Here are some pros and cons to consider before making a purchase:

1. High power handling capability: The MRF644 can handle up to 600mW of power, making it suitable for high-power applications.

2. Excellent frequency response: The transistor has a wide frequency range, making it suitable for both VHF and UHF applications.

3. Good gain and efficiency: The MRF644 has a high gain and efficiency, which can help reduce the power consumption and improve the overall performance of the circuit.

4. NOS (New Old Stock) availability: The MRF644 is a popular transistor, and it is still available as NOS, which means it is a high-quality, original part that has been stored for a long time.

1. Limited availability: Due to its popularity, the MRF644 can be hard to find in stock, and it may require some searching to find a reliable supplier.

2. Higher price compared to new transistors: NOS transistors are generally more expensive than their new counterparts, which may be a disadvantage for some budget-conscious buyers.

3. Limited compatibility with modern circuits: The MRF644 may not be compatible with modern circuits that require specific pinouts or feature sets.

4. Potential for aging and degradation: NOS transistors may have been stored for a long time, which can lead to aging and degradation of the part.

In conclusion, the MRF644 Motorola NOS NPN transistor is a high-quality part with excellent performance characteristics, making it a popular choice for VHF and UHF applications. However, its limited availability, higher price, and potential for aging and degradation should be considered before making a purchase. If you need a transistor for a specific application and are willing to pay a premium for a high-quality part, the MRF644 is a good option. If you're looking for a more cost-effective solution, you may want to consider a newer transistor with similar specifications.

Details:

5v good up to at least 512 MHz tested by myself on the bench. Feel free to ask.

HF 40 and qty 2 Motorola MRF644 uhf vhf npn rf power 12. Message me for details.

part #: mrf644 prices

• $19.25-$118.00

specifications hamamateuradio:

• brand: Motorola
• mpn: Mrf644
• country/region of manufacture: Unknown

Payments hamamateuradio:

• PayPal

Returns hamamateuradio:

• policy: no returns

Shipping hamamateuradio:

• handling: 2 days
• type: Flat
• cost: $0.0

Ratings:

1. Received as described. Thanks Very well packed! 03-28-16
2. Extremely fast delivery. Well packed. Great 'r, one of the best. A+++++ 01-18-16
3. perfect fast shipping 04-02-16
4. fast work great 09-13-15
5. Received quickly. A+ 02-03-16

General hamamateuradio:

• condition: New other see details
• in stock: Yes
• Consumer Electronics > Radio Communication > Ham, Amateur Radio > Other Ham Radio Equipment

Seller hamamateuradio:

• zipcode: P5A1C5
• city: Elliot Lake, Ontario

Offer hamamateuradio:

• quantity: 1
• Started: April 18, 2016, 10:19 am
• best offer: true
• # bids: 0
• # Sold: 0

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