2N3904 NPN Switching Transistor
The 2N3904 is a widely used NPN silicon transistor for general-purpose switching and amplification in low-frequency circuits up to 30 MHz. Commonly found in hobbyist projects, audio amplifiers, and simple logic circuits. Meets HTS 8541.29.00.55 criteria for transistors with operating frequency less than 30 MHz.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If operating frequency 30 MHz or greater
Higher frequency transistors (>30 MHz) are classified separately under 8541.29.00.85.
If imported as part of computer motherboard assemblies
Transistors incorporated into computer parts fall under Chapter 84 as computer accessories.
If for use specifically in measuring or checking instruments
Transistors designed exclusively for instruments/meters may classify under 9030 series.
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Import Tips & Compliance
• Provide frequency response curves from manufacturer data to confirm operation below 30 MHz threshold
• Ensure proper ESD protection packaging during shipping to prevent damage claims at customs
• Label shipments with exact part numbers and quantities matching commercial invoice precisely
Related Products under HTS 8541.29.00.55
BC547 NPN Bipolar Junction Transistor
The BC547 is a general-purpose NPN bipolar junction transistor designed for low to medium power amplification and switching applications in audio circuits and signal processing. It operates at frequencies below 30 MHz with a maximum transition frequency (fT) of 300 MHz but typically used in low-frequency ranges under 30 MHz. Classified under HTS 8541.29.00.55 as a non-photosensitive transistor with operating frequency less than 30 MHz.
2N3906 PNP Complementary Transistor
The 2N3906 PNP transistor serves as the complementary pair to 2N3904 for push-pull amplifier circuits and switching applications operating below 30 MHz. Used extensively in low-power audio and control circuits. Classified as a discrete non-photosensitive transistor under HTS 8541.29.00.55.
TIP41C NPN Power Transistor
TIP41C is a medium-power NPN bipolar transistor rated for 100V and 6A, used in power audio amplifiers and motor control circuits operating below 30 MHz. Its TO-220 package suits through-hole mounting in industrial electronics. Falls under HTS 8541.29.00.55 for low-frequency transistors.
BC337-40 NPN Medium Power Transistor
BC337-40 NPN transistor with hFE grouping 40, optimized for medium current switching and driver applications in control circuits below 30 MHz frequency range. Popular in automotive and industrial control boards. HTS 8541.29.00.55 classification for low-frequency discrete semiconductors.
2N5551 NPN High Voltage Switching Transistor
2N5551 NPN transistor rated 160V for high-voltage switching applications in relay drivers and telecom circuits operating under 30 MHz. Features high fT of 100-300 MHz but specified for low-frequency use. Discrete transistor under HTS 8541.29.00.55.
TIP42C PNP Power Darlington Transistor
TIP42C PNP Darlington transistor providing high current gain for power switching in audio output stages and motor drivers, operating below 30 MHz. TO-220 package for heat sinking applications. Classifies under HTS 8541.29.00.55 as low-frequency power transistor.