RN4901FE,LF(CT

Overview

The RN4901FE,LF(CT is a pre-biased digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP bipolar junction transistor within a single US6 surface-mount package. The device features built-in bias resistors with a ratio of 1:1, specifically R1 and R2 both at 4.7 kΩ. Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a total power dissipation (Pd) of 200 mW. The component exhibits a minimum DC current gain (hFE) of 30 at 10 mA and 5 V, with transition frequencies specified at 200 MHz for the NPN element and 250 MHz for the PNP element.

Feature Summary

• Integrates complementary NPN and PNP transistors with built-in bias resistors in a compact six-lead package to reduce component count.
• Features a 1:1 resistor ratio configuration where both base and emitter resistors are set to 4.7 kΩ for balanced circuit design.
• Designed for high-speed switching applications with transition frequencies reaching up to 250 MHz.

Applications

• Switching circuits requiring compact form factors
• Inverter logic circuits
• Interface driver circuits

Procurement Notes

Verify the specific suffix LF(CT against the manufacturer's latest documentation to confirm lead-free compliance and cut-tape packaging status. Confirm availability as distribution channels may list this part under varying stock statuses or end-of-life notifications. Ensure the ordering code matches the exact pinout and resistance values required for the target schematic.

Selection Notes

Select this component when a complementary NPN/PNP pair with integrated biasing is required in a minimal footprint. The 4.7 kΩ internal resistors suit standard logic interface levels. Verify that the 50 V voltage rating and 100 mA current capacity meet the load requirements. Consider thermal management for the 200 mW power dissipation limit in enclosed designs.

Part Context

This part belongs to the RN49xx series of pre-biased transistors from Toshiba. It shares the same internal circuit topology and electrical characteristics as the RN4901,LF but differs in packaging format. The FE variant typically denotes a specific tape-and-reel or cut-tape configuration intended for automated surface-mount assembly processes.

Replacement Considerations

Direct functional equivalents include the RN4901,LF and RN4901,LXHF(CT. These parts share identical electrical specifications and pinouts. Verify package compatibility, as the US6 footprint must match the PCB land pattern. Check for automotive qualification if the application requires AEC-Q101 certification, which may be present in LXHF variants.