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2SD2018 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists Panasonic Electronic Components. Its product description is TRANS NPN DARL 60V 1A TO-126B-A1. Review the specifications below when checking this part for your BOM.
The Panasonic 2SD2018 is a silicon NPN epitaxial planar type darlington power transistor designed for low-frequency amplification. It features a high forward current transfer ratio (hFE) ranging from 6,500 to 40,000 at IC = 1.0 A and VCE = 10 V. The device incorporates a built-in 60 V Zener diode between the base and collector terminals. Absolute maximum ratings include a collector-emitter voltage (VCEO) of 60 V, a continuous collector current (IC) of 1 A, and a peak collector current (ICP) of 1.5 A. Collector power dissipation is rated at 1.2 W at an ambient temperature of 25°C with a specified heat sink.
Verify the specific lifecycle status on the manufacturer's official website before procurement, as this component may be subject to maintenance or discontinuation plans. Confirm that the TO-126B-A1 package dimensions match your PCB footprint requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards.
Select this component when high gain is required for low-frequency applications without external feedback networks. The integrated Zener diode provides base-collector protection, simplifying circuit design for inductive loads. Consider thermal management requirements, as power dissipation drops significantly above 25°C ambient temperature without a heat sink.
This part belongs to the Panasonic 2SD series of silicon NPN transistors. It utilizes a darlington configuration within a single package to achieve high current gain. The TO-126B-A1 package allows for easy automatic and manual insertion onto printed circuit boards.
No public confirmed substitute part numbers are available in the provided documentation.
A 60 V Zener diode is built-in between the base and collector to provide protection.
The minimum hFE is 6,500 under conditions of IC = 1.0 A and VCE = 10 V.
The maximum collector-emitter voltage (VCEO) is 60 V.
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