UMD22NTR

Overview

The UMD22NTR is a complex transistor array from ROHM Semiconductor, integrating one NPN and one PNP digital transistor within a UMT6 (SOT-363) surface-mount package. It features built-in bias resistors with R1 values of 4.7 kΩ and R2 values of 47 kΩ for both polarities. The device supports a supply voltage of ±50V, a continuous collector current of ±100 mA, and a power dissipation of 150 mW. With a transition frequency of 250 MHz and a saturation voltage of 300 mV at low currents, it serves as a compact replacement for discrete components in high-frequency switching applications.

Feature Summary

• Integrates complementary NPN and PNP pre-biased transistors into a single ultra-small package to reduce circuit board space.
• Includes internal base and emitter-base resistors to simplify driver circuit design and improve switching speed stability.
• Offers high-speed performance with a transition frequency of 250 MHz suitable for RF and high-frequency signal processing.

Applications

• Differential amplifier circuits requiring matched or complementary transistor pairs.
• High-frequency crystal oscillators and starter circuits.
• General-purpose logic level shifting and switching interfaces.

Procurement Notes

Verify the specific suffix against official ROHM documentation to confirm automotive qualification status. The standard UMD22NTR lacks AEC-Q101 certification; only the UMD22NFHA variant holds this qualification. Ensure the ordering code matches the required reliability grade for the target application environment before procurement.

Selection Notes

Select the UMD22NTR when a compact dual-transistor solution with fixed biasing is required for non-automotive electronics. Compare the 4.7 kΩ input resistance against other series members if different drive currents are needed. Verify that the 150 mW power dissipation limit accommodates the thermal constraints of the final enclosure design.

Part Context

This component belongs to the UMD series of complex transistors designed for space-constrained portable devices. It functions as a direct pin-compatible alternative to discrete DTA143Z and DTC143Z transistor pairs, offering improved consistency and reduced assembly complexity in mass production environments.

Replacement Considerations

The UMD22NFHA is the automotive-grade equivalent featuring AEC-Q101 certification. For general consumer electronics, the UMD22NTR provides identical electrical characteristics without the automotive qualification requirements.