Genuine Texas Instruments BUF634P High-Speed Buffer Amplifier DIP-8

The BUF634P is a high-speed, unity-gain, open-loop buffer designed to enhance output current, eliminate thermal feedback, and drive capacitive loads when paired with operational amplifiers.


Parameter                    Specification
Output Current            250mA continuous
Slew Rate    2000V/μs
Adjustable Bandwidth    30MHz to 180MHz (via resistor)
Quiescent Current            1.5mA (30MHz mode)
Supply Voltage Range    ±2.25V to ±18V

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for diverse applications. It can be integrated within the feedback loop of operational amplifiers to increase output current, eliminate thermal feedback, and enhance capacitive load drive capability.

For low-power applications, the BUF634 operates with a quiescent current of 1.5mA while delivering 250mA output current, achieving a slew rate of 2000V/µs and a base bandwidth of 30MHz. The bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between the V– and BW pins.

The output circuit is fully protected through internal current limiting and thermal shutdown, making this device exceptionally robust and easy to implement.

About Us?

We specialize in manufacturing and supplying high-quality vacuum tubes (valves) and tube amplifier components for audiophiles, musicians, and vintage audio enthusiasts. Our product range includes premium 6H2, 12AX7, EL34, 300B, and other popular tubes, along with matched pairs, capacitors, resistors, transformers, and sockets for tube amp builders and restorers.

With strict quality control, we offer NOS (New Old Stock) tubes, modern reproductions, and hard-to-find replacements for classic amplifiers. Whether you need a single tube or a complete BOM (Bill of Materials) for your DIY or repair project, we provide expert matching, testing, and custom sourcing to ensure optimal performance.

Trusted by audio professionals worldwide, we are committed to preserving the warm, rich sound of tube technology. Contact us for bulk orders, custom solutions, and technical support—your perfect tone starts here!


FAQs

1. What types of vacuum tubes do you sell?
We offer a wide range of new production and NOS (New Old Stock) tubes, including 6H2, 12AX7, EL34, 300B, KT88, 5U4G, and many more. Our inventory covers preamp, power, rectifier, and driver tubes for Hi-Fi audio, guitar amps, and vintage equipment.


2. Do you provide matched pairs or quads?
Yes! We carefully test and match tubes for balanced performance in push-pull amplifiers. Matched pairs and quads are available for popular models like EL34, 6L6, and 300B to ensure optimal sound quality.


3. Can you help me find a rare or discontinued tube?
Absolutely. We specialize in sourcing hard-to-find and vintage tubes. Contact us with your requirements, and we’ll check our stock or global supplier network for replacements.


4. Do you sell complete component kits for tube amp builds?
Yes! We offer custom BOMs (Bill of Materials) with all necessary parts—tubes, capacitors, resistors, transformers, ICs, sockets, and chassis components—for DIY builders and restorers.


5. How do I know if a tube is compatible with my amplifier?
Check your amp’s manual for the required tube type (e.g., 12AX7, 6V6). If unsure, send us your amp’s model, and we’ll recommend suitable tubes or equivalents.


6. Do you offer testing and warranty on tubes?
All tubes undergo rigorous testing before shipment. We provide a warranty period (varies by product) to ensure reliability. NOS tubes are tested for emissions and noise.


7. What’s the difference between NOS and new production tubes?
NOS (New Old Stock): Vintage tubes from original manufacturers (e.g., Mullard, Telefunken, RCA)—prized for their classic sound.

New Production: Modern-made tubes (e.g., JJ, Electro-Harmonix, Tung-Sol) with consistent quality and availability.


8. Do you ship internationally?
Yes! We ship worldwide with reliable carriers. Free shipping with tracking number.


9. Can I get a discount for bulk orders?
We offer wholesale pricing for dealers, studios, and large projects. Contact us for a quote.


10. How do I store spare tubes to prolong their life?
Keep them in a cool, dry place, preferably in original boxes. Avoid humidity and extreme temperatures to prevent degradation.

Why Choose Us?
✅ Expert technical support for tube selection & troubleshooting.
✅ High-quality components for audiophiles and professionals.
✅ Global sourcing of rare and vintage tubes, components.
✅ Custom solutions for DIY and restoration projects.