2SC1740STPQ

Single Bipolar Transistors Overview

The 2SC1740STPQ is an NPN silicon epitaxial planar transistor manufactured by Rohm Semiconductor. It operates with a collector-emitter voltage of 50V and a maximum collector current of 150mA. The device features a transition frequency of 180MHz and a DC current gain ranging from 120 to 390 depending on the classification code. It dissipates up to 200mW of power and utilizes the SPT (EIAJ SC-72) through-hole package.

Single Bipolar Transistors Feature Summary

• Low output capacitance for signal integrity
• Designed as a replacement for legacy general-purpose transistors

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Audio visual equipment
• Office automation equipment
• Communication devices

Single Bipolar Transistors Procurement Notes

Verify the specific hFE binning code required for your circuit design, as the component is available in distinct gain classifications. Confirm that the SPT through-hole package aligns with your PCB footprint requirements. Ensure the 50V collector-emitter rating meets the operational voltage limits of your target application before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a low-cost, general-purpose NPN transistor is needed for standard electronic applications. Consider the specific hFE range required by your biasing network, as the part is offered in different gain bins. Verify that the 200mW power dissipation capability is sufficient for your thermal management strategy under expected operating conditions.

Single Bipolar Transistors Part Context

This component belongs to a family of general-purpose NPN silicon transistors produced by Rohm Semiconductor. It shares electrical characteristics and physical dimensions with other models in the series, such as the 2SC2412K and 2SC4617. These parts are designed for use in consumer electronics and office automation equipment requiring reliable small-signal performance.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly lists the 2SA1037AK, 2SA1576A, 2SA1774H, 2SA2029, and 2SA933AS as complementary PNP transistors. No direct NPN substitutes are documented within the provided source material.

Single Bipolar Transistors FAQ

What is the typical output capacitance of the 2SC1740STPQ?

The typical output capacitance (Cob) is 2.0pF.

How does the hFE classification affect the part number?

The suffix indicates the DC current gain range: 'QR' denotes 120 to 270, while 'T146' or 'T106' denote 180 to 390.

What is the maximum junction temperature for this transistor?

The maximum junction temperature (Tj) is 150°C.