Transistor BF336 NPN, Video Output TO-39

Transistor BF336 NPN, Video Output TO-39

Transistors

Reference: TRBF336

Part.No: BF336

€1.20

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The BF336 is a high-voltage NPN Bipolar Junction Transistor (BJT) in a metal TO-39 package. Designed for video output amplification stages in CRT displays and vintage television circuits, capable of handling voltages exceeding 150V.

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Description
Product Details

BF336 NPN Video Transistor - High-Voltage Output Amplifier for CRT Displays

The BF336 is a specialized NPN transistor engineered for the demanding final picture amplification stage of color television circuits. With its ability to withstand voltages well above 150V, it directly drives CRT tube deflection and brightness control without risk of breakdown.

Functions & Applications

High Voltage Rating: Withstands operating voltages exceeding 150V, essential for CRT video output stages.
Metal TO-39 Package: Robust construction with integrated heatsink mounting for thermal dissipation in high-power video circuits.
Video Output Optimized: Engineered specifically for picture amplification and brightness/contrast control in televisions.
Direct Tube Drive: Capable of directly supplying the high voltages required for CRT deflection and tube excitation.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-39
Collector-Emitter Voltage (Vceo)	>150V
Mounting Type	Through-Hole (THT)
Package Material	Metal with Heatsink Tab

Frequently Asked Questions

Q: Can the BF336 be replaced by a standard NPN transistor like BC547?
A: Absolutely not. A standard NPN transistor (e.g., BC547 rated at 45V) will fail catastrophically if placed in a CRT circuit demanding voltages over 150V. The BF336 is specifically designed for this high-voltage environment.

Q: Does the BF336 require a heatsink in CRT applications?
A: Yes. The metal TO-39 package has a heatsink tab designed for mounting a circular aluminum heatsink to manage thermal dissipation during continuous video amplification.

Notes

Vintage/NOS component. Used in classic CRT television circuits. Not recommended for modern applications—use modern MOSFETs or power transistors with equivalent voltage ratings if retrofitting.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-39

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