RN2903,LF(CT

Overview

The RN2903,LF(CT is a dual PNP digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates two pre-biased transistors within a compact US6 surface-mount package (equivalent to SC-88 or SOT-363). The device features a collector-emitter breakdown voltage of 50V and a maximum continuous collector current of 100mA per element. Internal biasing resistors are configured with R1 at 2.2 kΩ and R2 at 47 kΩ. Key electrical specifications include a DC current gain (hFE) of 80 minimum at 10mA and 5V, a saturation voltage of 300mV maximum at 250µA base current and 5mA collector current, and a transition frequency of 200MHz. Power dissipation is rated at 200mW.

Feature Summary

• Integrates two PNP bipolar junction transistors with built-in biasing resistors for simplified circuit design
• Utilizes a compact US6 surface-mount package suitable for high-density PCB layouts
• Provides high-speed switching capabilities with a 200MHz transition frequency

Applications

• Interface circuits requiring signal level translation or buffering
• Driver circuits for low-power loads such as LEDs or relays
• Switching applications in consumer electronics and industrial control systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Cross-reference the full part number including any trailing characters with official distributor catalogs to avoid discrepancies in component variants.

Selection Notes

Select this component when a dual PNP configuration with fixed internal biasing is required to reduce external component count. Ensure the 50V voltage rating and 100mA current capacity meet the load requirements. Verify that the 2.2kΩ input resistance aligns with the driving source impedance and logic levels. Consider the US6 package dimensions for board space constraints compared to alternative packages.

Part Context

The RN2903 belongs to Toshiba's RN series of digital transistors, which combine BJTs with integrated biasing networks. This series is designed to replace multiple discrete components, simplifying schematic design and reducing assembly costs. The RN2903 specifically offers a dual PNP configuration, contrasting with single-transistor or NPN-only variants within the same product family.

Replacement Considerations

The RN1904 is listed as a substitute part number in available documentation. Verify pin compatibility and electrical parameter equivalence before implementation.