IMT4T108

Overview

The IMT4T108 is a dual PNP complex transistor manufactured by ROHM Semiconductor, housed in an SMT6 (SOT-457/SC-74) surface-mount package. It features two integrated PNP transistors with a collector-emitter voltage (VCEO) of 120 V and a continuous collector current (IC) of 0.05 A per element. The device has a maximum power dissipation (Pd) of 300 mW and operates within a junction temperature range up to +150°C. The DC current gain (hFE) is specified at a minimum of 120 under standard test conditions.

Feature Summary

• Dual PNP configuration integrated into a compact surface-mount footprint
• High collector-emitter voltage rating suitable for elevated potential applications
• Integrated biasing resistors simplify circuit design and reduce component count

Applications

• General-purpose switching circuits requiring dual PNP control
• Logic interface stages for microcontroller output buffering
• Driver circuits for low-power loads or relay coils

Procurement Notes

Verify the specific ordering suffix and tape/reel specifications against the official datasheet before procurement. Confirm that the 120V rating aligns with system requirements. Check for any end-of-life notices or recommended replacement parts if designing new equipment. Ensure ESD handling protocols are followed during assembly due to the small package size.

Selection Notes

Select this component when a dual PNP solution is required in a minimal footprint. Compare the 120V breakdown voltage against peak transient voltages in the application. Evaluate the 300mW thermal dissipation limit relative to ambient temperature and PCB copper area. Consider equivalent single-transistor alternatives if only one channel is needed to optimize cost.

Part Context

This part belongs to ROHM's line of complex transistors, which integrate multiple semiconductor elements with built-in resistors into a single package. These devices are designed to replace discrete resistor-transistor networks, saving board space and simplifying soldering processes in consumer and industrial electronics.

Replacement Considerations

Check for active equivalents such as the IMT1 series variants if lower voltage ratings are acceptable. Verify pinout compatibility with existing footprints. Consult ROHM documentation for any officially recommended substitute part numbers.