SDTC144EET1G

Overview

The SDTC144EET1G is an NPN Bipolar Digital Transistor (BRT) from onsemi, designed to replace a single device and its external resistor bias network. It integrates a monolithic bias network consisting of two resistors: a series base resistor (R1) and a base-emitter resistor (R2). This component operates with a maximum collector-emitter voltage of 50 Vdc and a continuous collector current of 100 mAdc. The typical resistance values for both R1 and R2 are 47 kΩ. Packaged in the SC-75 (SOT-416) surface-mount format, it supports a junction temperature range of -55°C to +150°C.

Feature Summary

• Integrates a single transistor with a monolithic bias network comprising a series base resistor and a base-emitter resistor to eliminate individual components.
• AEC-Q101 qualified and PPAP capable, suitable for automotive and other applications requiring unique site and control change requirements.
• Designed to simplify circuit design while reducing overall board space and component count.

Applications

• Automotive electronics systems
• Industrial control circuits
• Power management interfaces

Procurement Notes

Verify the specific ordering suffix 'ET1G' corresponds to the SC-75 package and tape-and-reel shipping configuration as documented in the official datasheet. Confirm that the 'S' prefix requirement for automotive qualification aligns with the specific project needs, noting that the base part number indicates AEC-Q101 qualification capability.

Selection Notes

Select this component when a compact NPN digital transistor solution is required for logic inversion or switching applications. Ensure the 50 V collector-emitter voltage rating and 100 mA continuous current capacity meet the system load requirements. Verify compatibility with the SC-75 footprint during PCB layout planning.

Part Context

This device belongs to the DTC144E series of digital transistors manufactured by onsemi. It shares functional characteristics with related parts such as the DTC144EET1G and MUN2213, differing primarily in packaging and specific automotive qualification prefixes. The series is engineered to provide integrated biasing for simplified discrete transistor designs.

Replacement Considerations

The DTC144EET1G is listed alongside the SDTC144EET1G in the same package and marking configuration within the ordering information table. Designers should verify pinout compatibility and thermal dissipation characteristics against the original component before substitution.

FAQ

What is the internal resistor configuration of the SDTC144EET1G?

The device contains a monolithic bias network with a series base resistor (R1) and a base-emitter resistor (R2), both typically valued at 47 kΩ.

Is the SDTC144EET1G suitable for automotive applications?

Yes, the datasheet indicates that devices with the S and NSV prefixes are AEC-Q101 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.

What is the maximum power dissipation for the SC-75 package?

For the SC-75 package, the total device dissipation is 200 mW at an ambient temperature of 25°C, derating by 1.6 mW/°C above this temperature.