DTC144ESATP

Overview

The DTC144ESATP is a single NPN digital transistor from the ROHM DTC144E series, housed in an SPT (SC-72) surface-mount package. It integrates built-in bias resistors with R1 and R2 values of 47 kΩ each, providing a resistance ratio of 1. Key electrical parameters include a maximum collector current of 100 mA, a supply voltage rating of 50 V, and a power dissipation capacity of 300 mW at 25°C ambient temperature. The device features a minimum DC current gain (hFE) of 68 and a transition frequency of 250 MHz. It operates within a junction temperature range up to 150°C and supports storage temperatures from -55°C to +150°C.

Feature Summary

• Built-in bias resistors enable inverter circuit configuration without external input resistors.
• Thin-film resistors provide complete isolation, allowing negative input biasing and minimizing parasitic effects.

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify the specific suffix 'TP' against official documentation to confirm packaging details such as tape-and-reel specifications or quantity per unit. Ensure the component meets RoHS compliance requirements for the intended manufacturing process. Confirm that the SC-72 package dimensions align with the target PCB footprint design constraints.

Selection Notes

Select this component when a compact NPN digital transistor with integrated 47kΩ biasing is required. The SPT package offers a larger footprint compared to SOT-23 variants, which may facilitate manual assembly or improved thermal performance. Verify that the 300mW power dissipation rating suits the thermal environment of the application.

Part Context

This part belongs to the ROHM DTC144E family of digital transistors, which includes variants like DTC144EM, DTC144EE, and DTC144EUA. These devices share identical internal circuitry and electrical characteristics but differ primarily in their physical package types. The DTC144ESA designation specifically identifies the SPT (SC-72) package variant within this standardized series.

Replacement Considerations

Direct pin-compatible substitutes within the same series include DTC144EM, DTC144EE, and DTC144EUA, provided the package change is acceptable. Cross-manufacturer equivalents should be verified for matching hFE, VCEO, and resistor ratios.