CPH3456-TL-H

Overview

The CPH3456-TL-H is a single N-channel enhancement mode power MOSFET manufactured by onsemi. It utilizes the proprietary CPH package, which corresponds to SC-59, SOT-23, and TO-236 form factors. The device features a Drain-to-Source Voltage (V_DSS) of 20 V and supports a continuous Drain Current (I_D) of 3.5 A. Key electrical characteristics include an on-resistance (R_DS(on)) of 71 mΩ at V_GS = 4.5 V, 103 mΩ at V_GS = 2.5 V, and 156 mΩ at V_GS = 1.8 V. The component operates with a maximum junction temperature of 150 °C and offers low gate charge for efficient switching.

Feature Summary

• Supports 1.8 V logic-level drive capability for direct interface with low-voltage control circuits.
• Optimized low on-state resistance across multiple gate voltage thresholds to minimize conduction losses.
• Integrated body diode provides inherent reverse current path capabilities.

Applications

• DC/DC converter applications
• Motor driver circuits
• Load switch implementations

Procurement Notes

Verify the specific suffix against official documentation before procurement. The -H suffix indicates tape and reel packaging, while -W denotes cut tape. Confirm that the required quantity aligns with the standard shipping unit of 3,000 pieces per reel if ordering the -H variant. Ensure compatibility with RoHS and halogen-free compliance requirements for the target assembly process.

Selection Notes

Select this component when a compact surface-mount solution is required for 20 V systems. The CPH package facilitates miniaturization compared to traditional leaded packages. Consider the R_DS(on) values at the intended operating gate voltage to ensure thermal performance meets design constraints. Verify that the 3.5 A continuous current rating accommodates peak load demands within the specified ambient temperature limits.

Part Context

This part belongs to the CPH series of small-signal and power transistors designed for high-density mounting. The CPH package integrates the die into a plastic encapsulated mold compound with gull-wing leads, allowing for automated surface-mount assembly. It serves as a drop-in replacement for legacy SOT-23 devices where higher current handling or improved thermal dissipation is necessary.

Replacement Considerations

Direct substitutes must match the 20 V rating, N-channel configuration, and CPH/SC-59 footprint. Verify pinout alignment (Gate, Source, Drain) to prevent circuit damage during installation. Cross-reference datasheets for equivalent R_DS(on) and Qg specifications to maintain switching performance.