NXP Semiconductors PHP32N06LT,127

Overview

PHP32N06LT from Philips Semiconductors is an N-channel enhancement-mode TrenchMOS™ power MOSFET in SOT78 (TO-220AB) package, rated for 60 V V_DS, 34 A continuous drain current at T_mb = 25 °C, and 40 mΩ maximum R_DS(on) at V_GS = 5 V. It serves as a logic-level-compatible high-current switching device in DC-DC converters and primary-side SMPS switches.

For engineers reviewing the PHP32N06LT datasheet, PHP32N06LT pinout, PHP32N06LT application, or PHP32N06LT equivalent, key selection criteria include its 1.55 K/W junction-to-mounting-base thermal resistance, avalanche energy rating of 100 mJ, and gate threshold voltage range of 1–2 V at 25 °C - critical for robust gate drive design and thermal management in high-reliability power stages.

Technical Context

This discrete power transistor uses TrenchMOS™ technology to achieve low on-resistance and fast switching with 17 nC total gate charge and 8.5 nC Miller charge. Its gate-source threshold voltage (1–2 V) ensures compatibility with 3.3 V and 5 V logic controllers without level-shifting circuitry.

The device integrates a source-drain diode with 1.2 V forward voltage at 25 A and 36 ns reverse recovery time, supporting synchronous rectification and freewheeling in hard-switched topologies. Thermal performance is defined by R_th(j-mb) = 1.55 K/W and R_th(j-a) = 60 K/W (vertical still air), enabling direct heatsink mounting via the electrically connected mounting base.

Key Specifications

Pinout & Package

SOT78 (TO-220AB) package with electrically active mounting base connected to drain; pin 1 = gate, pin 2 = drain, pin 3 = source; mounting base serves as both thermal path and high-current drain terminal.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Compared with STP36NF06L and IRFZ44NPBF, PHP32N06LT uniquely delivers true logic-level operation (1–2 V V_GS(th)) within a 60 V rating, making it optimal for microcontroller-driven switching where gate drive simplicity and voltage margin are jointly critical - without sacrificing avalanche ruggedness or thermal performance.

Availability

PHP32N06LT is available at Aetrix Electronics and suitable for switched-mode power supplies, motor drives, and industrial solid-state relays requiring stable component supply and long-term manufacturability.

Supply support for PHP32N06LT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Philips Semiconductors (now NXP Semiconductors) is a Dutch semiconductor pioneer known for power management, RF, and automotive ICs, with legacy leadership in discrete power devices.

The PHP32N06LT belongs to Philips' TrenchMOS™ power MOSFET family, engineered for high-efficiency, high-reliability switching in industrial and consumer power conversion where logic-level drive, avalanche tolerance, and thermal robustness are essential.

FAQ

What is the maximum continuous drain current rating for PHP32N06LT at 100 °C mounting base temperature?

The PHP32N06LT supports 24 A continuous drain current at T_mb = 100 °C with V_GS = 5 V, per Table 3 limiting values. This derating reflects thermal constraints - the device's 1.55 K/W R_th(j-mb) and 175 °C T_j max allow sustained operation in thermally demanding environments when heatsinked appropriately. Always verify actual board-level thermal performance using the normalized derating curve in Figure 2.

Is PHP32N06LT pin-compatible with PHB32N06LT?

No - PHP32N06LT uses SOT78 (TO-220AB) packaging while PHB32N06LT uses SOT404 (D2-PAK); their footprints, thermal interfaces, and mechanical mounting differ significantly. Though electrically identical in parameters, PCB layout, heatsinking, and assembly processes are not interchangeable. PHP32N06LT requires through-hole mounting with vertical heatsink attachment; PHB32N06LT is surface-mounted with exposed pad soldering.

Does PHP32N06LT have integrated avalanche protection, and how is it specified?

Yes - PHP32N06LT is rated for 100 mJ non-repetitive avalanche energy (W_DSS) under unclamped inductive load conditions (ID = 20 A, tp = 0.11 ms, V_DS ≤25 V, V_GS = 5 V). This specification confirms single-pulse ruggedness during inductive turn-off transients, such as those in relay drivers or flyback transformer reset. It does not imply repetitive avalanche capability - repeated stress beyond ratings risks parametric shift or failure.

What is the gate-source leakage current specification for PHP32N06LT?

PHP32N06LT specifies gate-source leakage current (I_GSS) of 2–100 nA at V_GS = ±10 V and V_DS = 0 V, per Table 5 characteristics. This ultra-low leakage ensures minimal gate drive current demand and stable turn-on/turn-off behavior in high-impedance gate networks. At elevated temperatures or higher gate voltages, leakage remains well below 1 µA, supporting reliable operation in battery-powered or low-power control circuits.

Can PHP32N06LT be used with 3.3 V microcontroller GPIOs without a gate driver?

Yes - PHP32N06LT's gate-source threshold voltage (V_GS(th)) is 1–2 V at 25 °C, and its R_DS(on) remains ≤43 mΩ even at V_GS = 4.5 V, enabling full enhancement with 3.3 V logic. However, due to its 17 nC total gate charge, switching speed will be limited without adequate gate drive current; for PWM frequencies above 10 kHz, a buffer stage is recommended to minimize transition losses despite logic-level compatibility.