DTB543ZE3TL

Overview

The DTB543ZE3TL is a PNP digital transistor from ROHM Semiconductor, featuring built-in bias resistors in an SOT-416 (EMT3) surface-mount package. It operates with a collector-emitter voltage of -300 mV and a continuous collector current of -500 mA. The device includes a typical input resistance of 4.7 kOhms and a resistor ratio of 10. Key electrical parameters include a minimum DC current gain (hFE) of 140 at -100 mA and -2 V, a maximum operating frequency of 260 MHz, and a power dissipation rating of 150 mW. The emitter-base voltage is rated at -2.5 V, with a saturation output voltage of -60 mV.

Feature Summary

• Integrates bias resistors to simplify circuit design and reduce component count.
• Provides high-speed switching capabilities suitable for digital logic applications.
• Features low saturation voltage for efficient power consumption.

Applications

• General-purpose digital switching circuits
• Interface circuits between logic gates and loads
• Driver stages for small-signal applications

Procurement Notes

Verify the specific suffix '3TL' against the manufacturer's latest datasheet to confirm RoHS compliance status and tape-and-reel specifications. Ensure the ordering quantity aligns with the standard factory packaging quantity of 3000 units if full reels are required. Cross-reference the part number with authorized distributors to confirm current availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kOhm base resistor is required. The SOT-416 package is suitable for space-constrained PCB layouts. Compare the -300 mV VCEO rating against the application's voltage requirements to ensure adequate headroom. Consider the 260 MHz transition frequency for high-speed switching needs.

Part Context

This part belongs to the ROHM DTB543ZE series of bias resistor built-in transistors. It is the PNP variant within the SOT-416 package family, distinguished by its specific resistor ratio and polarity. It serves as a direct replacement for older discrete resistor-transistor combinations in digital logic interfaces.

Replacement Considerations

Check for equivalent parts such as DTD543ZE3TL for NPN alternatives or other ROHM PNP variants like DTB513ZE3TL if different resistor values are acceptable. Verify pinout compatibility and thermal characteristics before substituting.