EMA3T2R

Overview

The EMA3T2R is a dual PNP digital transistor from the ROHM Semiconductor EMA3 series, housed in an SOT-553-5 surface-mount package. It integrates two PNP transistors with typical input resistors of 4.7 kOhms each. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of -50 V and a continuous collector current of -100 mA. The device features a DC current gain (hfe) minimum of 100 at -1 mA and -5 V, with a maximum operating frequency of 250 MHz. Power dissipation is rated at 150 mW, and it supports operation up to a maximum temperature of +150 C.

Feature Summary

• Integrates dual PNP transistors with built-in bias resistors for simplified circuit design
• Optimized for high-speed switching applications with a maximum operating frequency of 250 MHz
• Compact SOT-553-5 surface-mount package suitable for space-constrained PCB layouts

Applications

• General-purpose switching circuits
• Driver circuits for relays and solenoids
• Logic level translation interfaces

Procurement Notes

Verify component authenticity through authorized ROHM distributors or certified suppliers. Confirm RoHS compliance status via official documentation before integration. Ensure storage conditions adhere to specified limits to maintain reliability. Check for obsolescence notices or lifecycle changes prior to final procurement decisions.

Selection Notes

Select this component when dual PNP switching with integrated base resistors is required in a compact form factor. Verify that the -50 V voltage rating and -100 mA current capacity meet circuit demands. Consider the 4.7 kOhm input resistance for drive current calculations. Compare against other EMA3 variants if different resistor values or NPN configurations are needed.

Part Context

The EMA3T2R belongs to ROHM's EMA3 series of digital transistors, which combine bipolar junction transistors with internal biasing networks. This series is designed to reduce external component count and simplify layout in consumer and industrial electronics. The SOT-553-5 package provides a small footprint while maintaining adequate thermal performance for low-power applications.

Replacement Considerations

Check ROHM datasheets for direct pin-compatible alternatives within the EMA3 series. Verify equivalent electrical characteristics such as VCEO, IC, and hfe when considering substitutes from other manufacturers.