Germanium Point Contact Diode OA90
The OA90 is a vintage germanium diode used in radio frequency detection and vintage electronics restoration. It offers low forward voltage for crystal radio detectors, classified under HTS 8541.10.00 for non-photosensitive diodes regardless of semiconductor material.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for repair of obsolete electrical equipment
Replacement parts for old machinery not specified elsewhere.
If incorporated in complete radio receivers
Detector diodes in finished communication apparatus.
If calibrated as precision measuring diode
Diodes functioning as part of instruments for electrical quantities.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Specify germanium material and detector function to distinguish from silicon types for proper valuation
• Import in small quantities to avoid anti-dumping scrutiny on legacy components
• Include test data showing low leakage current typical of point-contact construction
Related Products under HTS 8541.10.00
1N4007 Rectifier Diode
The 1N4007 is a standard silicon rectifier diode designed for general-purpose rectification in power supplies and chargers. It allows current to flow in one direction only, blocking reverse voltage up to 1000V, classifying it under HTS 8541.10.00 as a non-photosensitive, non-LED diode. This component is essential for converting AC to DC in electronic circuits.
1N4148 Switching Diode
The 1N4148 is a high-speed silicon switching diode used in signal processing, protection circuits, and high-frequency applications. It features fast switching times under 4ns, fitting HTS 8541.10.00 as a non-photosensitive diode. Commonly found in computers, telecommunications, and consumer electronics.
Zener Diode 1N4733A
The 1N4733A is a 5.1V Zener diode used for voltage regulation and reference in power supplies and stabilizers. It maintains constant voltage across its terminals under reverse bias, qualifying under HTS 8541.10.00 for non-light-emitting diodes. Critical for protecting circuits from voltage spikes.
Schottky Barrier Diode BAT54
The BAT54 is a Schottky diode with low forward voltage drop (0.3V) ideal for high-efficiency rectification in switch-mode power supplies and RF detectors. Its metal-semiconductor junction enables fast switching, placing it under HTS 8541.10.00 as a non-photosensitive diode.
Bridge Rectifier Diode GBU4J
The GBU4J is a 4-pin silicon bridge rectifier diode rated for 600V/4A, used in AC-DC power adapters and battery chargers. It contains four diodes in one package for full-wave rectification, still classified under HTS 8541.10.00 as diodes.
Varicap Tuning Diode BB131
The BB131 varicap (varactor) diode varies capacitance with reverse bias voltage, used in radio tuners and voltage-controlled oscillators. As a voltage-variable capacitor diode, it falls under HTS 8541.10.00 for non-photosensitive diodes.