Nexperia USA Inc. 2PC4081Q,115

Overview

2PC4081Q from Nexperia is an NPN general-purpose bipolar junction transistor in SOT323 (SC-70) package, rated for 50 V V_CEO, 150 mA I_C, and DC current gain (h_FE) of 120–270 at 1 mA/6 V. It delivers low-saturation voltage (400 mV max at 50 mA/5 mA), 100 MHz f_T, and operates across –65 °C to +150 °C ambient range. Used in compact signal switching and amplification stages in portable consumer electronics.

For engineers reviewing the 2PC4081Q datasheet, 2PC4081Q pinout, 2PC4081Q application, or 2PC4081Q equivalent, key selection criteria include its SC-70 footprint compatibility, verified h_FE spread, V_CEsat performance under low-base-drive conditions, and thermal resistance (625 K/W) on standard FR4 PCBs.

Technical Context

This discrete NPN transistor operates in linear and saturation regions with defined absolute maximum ratings: 50 V collector-emitter voltage, 150 mA continuous collector current, and 200 mW total power dissipation at T_amb ≤ 25 °C. Its transition frequency of 100 MHz supports small-signal RF amplification up to VHF band.

Thermal behavior is characterized by R_th(j-a) = 625 K/W on single-sided FR4, and leakage currents are tightly specified: ICBO ≤ 100 nA (25 °C) and ≤ 5 µA (150 °C), enabling stable biasing in temperature-varying environments.

Key Specifications

Pinout & Package

The 2PC4081Q is housed in a surface-mount SOT323 (SC-70) plastic package measuring 2.0 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch. The package supports reflow and wave soldering per Nexperia's validated footprints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Compared with BC846B,215 and MMBT3904LT1G, the 2PC4081Q offers the smallest footprint (SOT323), guaranteed 100 MHz f_T, and lowest thermal resistance among these three-making it optimal for miniaturized, thermally constrained, or RF-capable designs where size and frequency response are prioritized over absolute gain consistency.

Availability

2PC4081Q is available at Aetrix Electronics and suitable for portable audio amplifiers, microcontroller GPIO drivers, USB-C power path control, and smoke detector signal conditioning requiring stable component supply and consistent parametric performance across production batches.

Supply support for 2PC4081Q 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The 2PC4081Q belongs to Nexperia's general-purpose bipolar transistor family, engineered for compact, cost-effective switching and amplification in space- and power-sensitive applications-not automotive-qualified, but optimized for consumer portables and industrial edge sensors.

FAQ

Is the 2PC4081Q suitable for automotive applications?

No. The 2PC4081Q is explicitly designated as non-automotive qualified per Nexperia's revision history and legal disclaimers. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation beyond its specified –65 °C to +150 °C operating range. Automotive designs require parts explicitly marked with -AQ suffix or certified to AEC standards.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current (I_BM) is 200 mA, but continuous operation must respect the 200 mW total power dissipation limit. At V_BE ≈ 0.7 V, sustained I_B should not exceed ~285 µA to avoid exceeding P_tot when combined with collector power. Practical designs use current-limiting resistors to keep I_B within 1–10 mA for 150 mA I_C switching.

Does the 2PC4081Q have a complementary PNP device?

Yes. Nexperia specifies the 2PA1576Q as the direct PNP complement to the 2PC4081Q, sharing identical SOT323 packaging, voltage/current ratings (V_CEO = –50 V, I_C = –150 mA), and thermal characteristics. Both devices are designed for matched pair usage in push-pull or differential amplifier topologies.

How does the 2PC4081Q perform at elevated ambient temperatures?

At 100 °C ambient, its usable I_C must be derated to ~100 mA due to the 200 mW P_tot limit and 625 K/W thermal resistance. The h_FE remains functional but decreases gradually above 25 °C, while ICBO rises to 5 µA at 150 °C junction temperature-requiring careful bias network design for high-temperature stability.