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The 2SC4901YK-TR-E is an NPN silicon small-signal bipolar junction transistor designed for ultra-high frequency applications. It features a maximum collector current of 0.05 A and a collector-emitter voltage rating of 9 V. The device operates in the UHF band, supporting frequencies up to 9 GHz. Key electrical characteristics include a maximum base-collector capacitance of 1.3 pF. It is housed in a surface-mount MPAK-4 package with four terminals.
Verify component authenticity through authorized Renesas distributors or certified supply chain partners. Confirm orderable part number alignment with specific suffix requirements. Ensure compliance with EU RoHS and China RoHS standards as indicated by the official ordering designation. Request original manufacturer documentation for technical validation prior to integration into production designs.
Select this component for designs requiring NPN switching or amplification at ultra-high frequencies. Evaluate thermal management requirements against the 0.05 A current limit. Consider the MPAK-4 footprint for PCB layout constraints. Verify that the 9 V voltage rating meets circuit operating conditions. Assess compatibility with existing RF impedance matching networks.
This transistor belongs to the 2SC4901 series of small-signal bipolar transistors manufactured by Renesas Electronics Corporation. The series is specifically engineered for high-frequency performance. The YK-TR-E suffix denotes the specific packaging, tape-and-reel delivery format, and environmental compliance status associated with this variant.
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Renesas technical support for validated alternatives if this specific variant is unavailable.