NP043A200A

Overview

The Panasonic NP043A2 is a composite transistor featuring an NPN epitaxial planar type (Tr1) and a PNP epitaxial planar type (Tr2) within a single SSS-Mini 6-pin package. It integrates base resistors R1 and R2, both nominally 22 kΩ, with a resistance ratio of 1.0. The device supports a maximum collector-emitter voltage of 50 V for both transistors and a total power dissipation of 125 mW. Tr1 offers a forward current transfer ratio (hFE) of at least 60 and a transition frequency of 150 MHz, while Tr2 provides an hFE of at least 60 and a transition frequency of 80 MHz. The compact design reduces mounting area by half compared to discrete components.

Feature Summary

• Combines complementary NPN and PNP transistors in a single surface-mount package
• Integrates built-in bias resistors to simplify circuit design and reduce component count
• Ultra-thin profile with a maximum package height of 0.4 mm for space-constrained applications

Applications

• Digital logic circuits requiring level shifting or buffering
• General-purpose switching applications in consumer electronics
• Interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the current lifecycle status directly with Panasonic Electronic Components before procurement. The datasheet indicates this product falls under maintenance or discontinued categories. Confirm availability through official distributors and ensure the latest specifications are obtained prior to final design implementation to avoid obsolescence risks.

Selection Notes

Select the NP043A2 when a matched NPN/PNP pair with integrated biasing is required in a minimal footprint. Ensure the 50 V voltage rating and 125 mW power dissipation meet the system requirements. Consider the specific transition frequencies (150 MHz for NPN, 80 MHz for PNP) if high-speed switching performance is critical for the application.

Part Context

This component belongs to Panasonic's series of composite transistors designed for digital circuits. It serves as a direct replacement for discrete resistor-transistor networks, offering reduced assembly costs and smaller board space. The part is specifically engineered for general electronic equipment such as office machines, communications gear, and household appliances.

Replacement Considerations

The datasheet identifies UNR31A2 (NPN) and UNR32A2 (PNP) as the basic constituent parts. However, these do not provide the integrated composite functionality. No other specific substitute part numbers are documented in the provided source material.