NXP Semiconductors PHP14NQ20T,127

Overview

PHP14NQ20T from NXP Semiconductors (formerly Philips Semiconductors) is an N-channel enhancement-mode TrenchMOS™ power MOSFET in SOT78 (TO-220AB) package, rated for 200 V drain-source voltage, 14 A continuous drain current at T_mb = 25 °C, and R_DS(on) ≤ 230 mΩ at V_GS = 10 V. It serves as a high-efficiency switching element in DC-DC converters and industrial power supplies.

For engineers reviewing the PHP14NQ20T datasheet, PHP14NQ20T pinout, PHP14NQ20T application, or PHP14NQ20T equivalent, key selection criteria include avalanche ruggedness (70 mJ), thermal resistance (R_th(j-mb) = 1.2 K/W), gate charge (Q_g(tot) = 38 nC), and safe operating area under pulsed inductive loads.

Technical Context

This device employs TrenchMOS™ technology to achieve low on-state resistance and fast switching performance. Its gate threshold voltage (V_GS(th)) ranges from 2–4 V at 25 °C and remains functional down to 1 V at 175 °C, enabling robust gate drive compatibility with standard 10 V logic-level sources.

The integrated source-drain diode supports synchronous rectification and flyback recovery, with V_SD = 1.0–1.5 V at I_S = 14 A and reverse recovery time t_rr = 135 ns. Avalanche capability is characterized under unclamped inductive conditions (I_DS(ALM) = 14 A, E_DS(ALS) = 70 mJ), confirming suitability for hard-switched topologies.

Key Specifications

Pinout & Package

PHP14NQ20T uses the SOT78 (TO-220AB) plastic single-ended package with heatsink-mounted mounting base connected internally to the drain terminal. The package features three leads and one mounting hole, optimized for vertical PCB mounting with external heatsink attachment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP14NF20 and IRF640NPBF, PHP14NQ20T offers superior avalanche ruggedness (70 mJ) and lower thermal resistance (1.2 K/W), making it more suitable for compact, snubberless DC-DC converters and motor drives where reliability under transient overloads is critical.

Availability

PHP14NQ20T is available at Aetrix Electronics and suitable for DC-DC converters, industrial motor drives, and uninterruptible power supplies requiring stable component supply across long-lifecycle embedded programs.

Supply support for PHP14NQ20T 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

NXP Semiconductors, formerly Philips Semiconductors, is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The PHP14NQ20T belongs to the TrenchMOS™ standard-level power MOSFET product line, designed specifically for cost-sensitive, medium-power switching applications demanding robust avalanche performance and thermal efficiency in TO-220 packages.

FAQ

What is the maximum continuous drain current rating for PHP14NQ20T at 100 °C mounting base temperature?

The PHP14NQ20T supports 10 A continuous drain current at T_mb = 100 °C, as specified in Table 2 (Limiting values). This derating reflects thermal constraints of the SOT78 package and must be applied in thermally constrained environments such as enclosed power supplies without forced airflow. The PHP14NQ20T's R_th(j-mb) = 1.2 K/W enables accurate junction temperature prediction from measured mounting base temperature.

Does PHP14NQ20T have a documented avalanche energy rating, and how is it tested?

Yes, PHP14NQ20T has a non-repetitive avalanche energy rating of 70 mJ, measured under unclamped inductive load conditions: I_D = 14 A, V_DD ≤ 25 V, pulse width t_p = 20 µs, R_GS = 50 Ω, V_GS = 10 V, and starting junction temperature of 25 °C. This rating is confirmed in Table 2 and Figure 15 of the original Philips data sheet (Rev. 03, 2002), validating its use in snubberless flyback and boost converters.

What is the gate-source threshold voltage range for PHP14NQ20T, and how does it vary with temperature?

The PHP14NQ20T gate-source threshold voltage (V_GS(th)) is specified as 2–4 V at T_j = 25 °C, 1–? V at T_j = 175 °C (min 1 V), and up to 6 V at T_j = −55 °C. This negative temperature coefficient ensures stable turn-on behavior across industrial temperature ranges and supports compatibility with standard 10 V gate drivers without risk of unintended turn-off at high temperature.

Can PHP14NQ20T be used in surface-mount designs, or is it limited to through-hole mounting?

PHP14NQ20T is packaged exclusively in SOT78 (TO-220AB), a through-hole package with a metal mounting base intended for vertical heatsink attachment. It is not suitable for surface-mount assembly. For surface-mount alternatives, consider PHB14NQ20T (SOT404/D2-PAK) or PHD14NQ20T (SOT428/D-PAK), which share identical electrical specifications but differ in package footprint and thermal interface.

What is the typical reverse recovery time of the intrinsic body diode in PHP14NQ20T?

The intrinsic source-drain diode in PHP14NQ20T has a typical reverse recovery time (t_rr) of 135 ns, measured at I_S = 14 A, dI_S/dt = −100 A/µs, V_R = 30 V, and V_GS = 0 V. This value, specified in Table 4, supports efficient freewheeling in synchronous and asynchronous buck converters and limits switching losses during diode commutation.