DTB743XMT2L

Overview

The DTB743XMT2L is a PNP digital transistor from the ROHM DTB743X series, featuring built-in biasing resistors. It operates with a supply voltage of -30V and a maximum collector current of -200mA. The device incorporates thin-film resistors for complete isolation, allowing negative input biasing while eliminating parasitic effects. Key electrical parameters include an input resistance (R1) of 4.7kΩ and an emitter-base resistance (R2) of 10kΩ. It provides a DC current gain (GI) of 140 at -100mA output. The component is housed in a VMT3 (SC-105AA) surface-mount package with dimensions of 1.2x1.2mm.

Feature Summary

• Built-in biasing resistors enable inverter circuit configuration without external input components.
• Thin-film resistor construction allows negative input biasing and eliminates parasitic effects.
• Simplified circuit design by requiring only on/off condition settings.

Applications

• Switching circuits
• Inverter circuits
• Interface circuits
• Driver circuits

Procurement Notes

Verify the specific ordering suffix T2L to confirm taping packaging specifications. Ensure compatibility with the VMT3 footprint during PCB layout. Confirm RoHS compliance status for environmental regulations. Check for any recent datasheet revisions that may affect absolute maximum ratings or thermal characteristics before finalizing procurement.

Selection Notes

Select this PNP variant when complementary NPN types like the DTD743X series are required for push-pull configurations. Consider the -30V supply voltage limit and -200mA current capability against load requirements. Evaluate the 4.7kΩ input resistance for appropriate drive signal levels. Verify thermal dissipation limits within the 150mW power rating under operating conditions.

Part Context

This component belongs to the DTB743X series of standard digital transistors invented and marketed by ROHM. It serves as the PNP counterpart to the NPN DTD743X series. The product is designed for general electronic equipment applications, including consumer systems and communication devices. It represents a compact solution for integrating switching functions with minimal external components.

Replacement Considerations

Direct pin-compatible replacements within the same series should be verified against the latest ROHM documentation. Cross-reference electrical parameters such as VCC, IC(MAX), and R1/R2 values to ensure functional equivalence. Consult ROHM sales representatives for alternative packages or updated series designs if availability is constrained.

FAQ

What is the function of the built-in resistors in the DTB743XMT2L?

The built-in biasing resistors allow the configuration of an inverter circuit without connecting external input resistors, simplifying the circuit design.

Can the DTB743XMT2L handle negative input biasing?

Yes, the bias resistors consist of thin-film resistors with complete isolation, which allows for negative biasing of the input.

What is the complementary NPN type for the DTB743X series?

The complementary NPN type for the DTB743X series is the DTD743X series.