NXP Semiconductors PMXB65ENEZ

Overview

PMXB65ENE from NXP Semiconductors is a 30 V, N-channel Trench MOSFET in a DFN1010D-3 (SOT1215) package, optimized for low-side switching in portable electronics. It delivers R_DS(on) = 44 mΩ at V_GS = 10 V and I_D = 3.2 A, supports 1 kV ESD protection, and features an exposed drain pad for thermal conduction in space-constrained battery-powered systems.

For engineers reviewing the PMXB65ENE datasheet, PMXB65ENE pinout, PMXB65ENE application, or PMXB65ENE equivalent, this page provides verified electrical parameters, thermal performance data, PCB footprint guidance, and real-world use cases for load switching, LED driving, and DC-DC power stages in ultra-thin consumer devices.

Technical Context

This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching with Q_G(tot) = 6–11 nC and t_r/t_f = 12 ns/3 ns. Its gate threshold voltage (V_GS(th)) ranges from 1.0 V to 2.5 V, enabling reliable turn-on with 3.3 V or 4.5 V logic-level drive.

Thermal design is supported by R_th(j-sp) = 10–15 K/W to solder point and R_th(j-a) = 102–117 K/W on a 6 cm² drain pad - critical for sustained 2.5 A operation at 100 °C ambient in compact layouts.

Key Specifications

Pinout & Package

DFN1010D-3 (SOT1215) is a leadless, thermally enhanced ultra-thin plastic package with an exposed drain pad on the bottom side for direct PCB heat sinking. Dimensions: 1.1 mm × 1.0 mm × 0.37 mm. The top-side marking "00 10 00" identifies PMXB65ENE.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel low-side switching applications.

Compared with DMN10H400LPS-13 and AO3400A, PMXB65ENE offers superior thermal dissipation per unit area due to its exposed drain pad and 0.37 mm profile, making it the preferred choice for ultra-thin battery-powered devices where R_DS(on), size, and thermal management are jointly constrained.

Availability

PMXB65ENE is available at Aetrix Electronics and suitable for smartphone charging switches, TWS earbud LED drivers, portable SSD power sequencing, and USB-C PD sink applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for PMXB65ENE 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 is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and mobile markets.

The PMXB65ENE belongs to NXP's TrenchMOS portfolio, designed specifically for space- and thermally constrained portable electronics requiring high-efficiency, low-voltage N-channel switching in sub-1 mm² footprints.

FAQ

What is the maximum continuous drain current for PMXB65ENE at 100 °C ambient temperature?

The PMXB65ENE supports 2.5 A continuous drain current at T_amb = 100 °C when mounted on an FR4 PCB with a 6 cm² drain pad. This derating reflects thermal limits defined in Table 5 of the datasheet and is validated by the normalized current curve in Figure 2. Operation above this current requires active cooling or reduced ambient conditions to maintain T_j ≤ 150 °C.

Does PMXB65ENE require a gate resistor for safe switching in a 3.3 V MCU-driven load switch?

Yes - while PMXB65ENE turns on fully with 3.3 V gate drive (V_GS(th) max = 2.5 V), a series gate resistor (typically 5–22 Ω) is recommended to dampen ringing, limit peak gate current, and control dV/dt during switching. The gate resistance R_G is specified as 1 Ω (typical), so external resistance dominates gate loop impedance and ensures robust EMI performance in portable PCB layouts.

Can PMXB65ENE be used in a high-side configuration?

No - PMXB65ENE is an N-channel MOSFET with source tied to ground in its standard DFN1010D-3 pinout (Pin 2 = S). High-side operation would require floating gate drive referenced to the drain, which is not supported by its single-ended gate structure or thermal design. For high-side switching, a P-channel device or dedicated high-side driver IC is required.

What is the thermal resistance from junction to solder point (R_th(j-sp)) for PMXB65ENE?

The PMXB65ENE has a junction-to-solder-point thermal resistance of 10–15 K/W, as specified in Table 6 under "R_th(j-sp)" with conditions matching a standard FR4 PCB and tin-plated mounting pad. This value assumes proper soldering of the exposed drain pad to the PCB thermal pad and is critical for calculating steady-state junction temperature in compact layouts.

Is the DFN1010D-3 package of PMXB65ENE compatible with standard reflow profiles?

Yes - the DFN1010D-3 package is qualified for lead-free reflow per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s. Figure 19 in the datasheet provides the exact solder land pattern (1.1 mm × 0.75 mm), and the exposed drain pad must be fully soldered to ensure mechanical reliability and thermal performance of the PMXB65ENE.