2SD1918-AQ

Single Bipolar Transistors Overview

The Diotec Semiconductor 2SD1918-AQ is an NPN epitaxial planar silicon transistor designed for high-speed switching applications. It features a collector-emitter voltage of 160 V and a continuous collector current of 1.5 A, with a maximum power dissipation of 1 W. The device utilizes a DO-213AB (SOD-128) surface-mount package, ensuring compact integration in space-constrained designs. Operating within a temperature range of -55 °C to +150 °C, it offers a DC current gain (hFE) ranging from 120 to 270. This component is suitable for relay drivers, high-speed inverters, converters, and general large-current switching tasks.

Single Bipolar Transistors Feature Summary

• NPN epitaxial planar silicon construction for reliable high-speed switching performance
• Compact SMD package design facilitating automated surface-mount assembly
• Wide operating temperature range supporting demanding environmental conditions
• High DC current gain optimized for efficient driver circuit applications

Single Bipolar Transistors Applications

• Relay driver circuits
• High-speed inverters
• DC-DC converters
• General large-current switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix against official Diotec documentation to confirm exact electrical tolerances and packaging variations. Ensure compatibility with existing PCB footprints for the DO-213AB package. Confirm RoHS compliance status through the manufacturer's latest declaration. Validate supply chain authenticity via authorized distributors only.

Single Bipolar Transistors Selection Notes

Select this component when a compact NPN transistor with 160 V blocking capability is required for high-speed switching. Consider the 1.5 A current rating and 1 W power dissipation limits relative to thermal management constraints. Evaluate the SOD-128 footprint availability against alternative packages if board space permits. Compare hFE ranges to ensure adequate drive requirements are met for the target load.

Single Bipolar Transistors Part Context

The 2SD1918 belongs to Diotec's lineup of small-signal and medium-power transistors intended for consumer and industrial electronics. It serves as a replacement for legacy components in established designs requiring robust NPN switching characteristics. The device aligns with industry standards for surface-mount reliability and performance in portable and fixed electronic systems.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers: 2SCR587D3.