EML17T2R

Overview

The EML17T2R is a pre-biased PNP transistor manufactured by ROHM Semiconductor, housed in an EMT5 surface-mount package. It integrates a single NPN transistor with internal biasing resistors (R1 and R2), each rated at 47 kOhms. Key electrical specifications include a collector-emitter breakdown voltage of 50 V, a continuous collector current of 30 mA, and a transition frequency of 250 MHz. The device features a minimum DC current gain (hFE) of 68 at 5 mA and 5 V, with a maximum power dissipation of 120 mW.

Feature Summary

• Integrates dual resistors within a compact SMD footprint to simplify circuit design
• Optimized for high-speed switching applications with a 250 MHz transition frequency
• Provides stable biasing characteristics through integrated base and emitter resistors

Applications

• High-frequency oscillator circuits
• Switching regulator control stages
• Logic interface buffering

Procurement Notes

Verify the specific suffix T2R confirms tape-and-reel packaging when sourcing. Confirm RoHS compliance status directly with the manufacturer or authorized distributor documentation prior to integration. Ensure the component meets environmental regulations applicable to the target deployment region.

Selection Notes

Select this component for designs requiring a compact PNP solution with built-in biasing. Verify that the 30 mA collector current limit and 120 mW power dissipation meet the thermal requirements of the application. Compare against alternative EMT5 packages if pin compatibility is critical.

Part Context

This part belongs to ROHM's line of pre-biased transistors designed to replace discrete resistor-transistor networks. The EML17 series specifically targets space-constrained applications where board area reduction and simplified assembly are priorities. It serves as a direct replacement for complex discrete configurations in signal processing paths.

Replacement Considerations

Check for equivalent parts from other manufacturers offering the same EMT5 footprint and 47 kOhm resistor values. Ensure the replacement maintains the 50 V VCEO rating and 250 MHz fT specification to avoid performance degradation in high-speed circuits.