NXP Semiconductors PZT3904,115

Overview

PZT3904,115 from Nexperia (formerly Philips Semiconductors) is an NPN silicon switching transistor in SOT223 package, rated for 40 V V_CEO, 200 mA I_C, and 1.05 W P_tot at T_amb ≤25 °C, optimized for high-speed saturated switching in low-voltage digital logic interfaces and power control stages.

For engineers reviewing the PZT3904,115 datasheet, PZT3904,115 pinout, PZT3904,115 application, or PZT3904,115 equivalent, this discrete transistor is selected for its verified 300 MHz f_T, low 200 mV V_CEsat at I_C/I_B = 10 mA/1 mA, and thermal resistance of 117 K/W (junction-to-ambient), supporting reliable operation in space-constrained PCB layouts with moderate power dissipation.

Technical Context

The PZT3904,115 operates as a general-purpose NPN bipolar junction transistor with DC current gain (h_FE) ranging from 60 at I_C = 0.1 mA to 300 at I_C = 10 mA, and exhibits fast switching performance: t_on ≤65 ns, t_off ≤240 ns, and t_s ≤200 ns under defined test conditions (I_Con = 10 mA, I_Boff = −1 mA).

Its thermal design relies on the exposed collector pad in the SOT223 package, delivering R_{th j-s} = 36 K/W to soldering point and enabling stable junction temperatures up to 150 °C, while leakage currents remain tightly controlled: I_CBO ≤50 nA at V_CB = 30 V and I_EBO ≤50 nA at V_EB = 6 V.

Key Specifications

Pinout & Package

SOT223 plastic surface-mounted package with 4 leads: pins 2 and 4 are internally connected to the collector and serve as thermal and electrical connection points; pin 1 is base; pin 3 is emitter. The large collector pad provides enhanced thermal transfer to the PCB.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Compared with MMBT3904LT1G and BC847B,215, the PZT3904,115 delivers superior thermal performance (1.05 W rating, 117 K/W) and proven reliability in sustained 200 mA saturated switching-making it the preferred choice for industrial control interfaces where power density and long-term stability are prioritized over ultra-miniaturization.

Availability

PZT3904,115 is available at Aetrix Electronics and suitable for LED driver circuits, digital logic level shifters, microcontroller peripheral drivers, and small-signal relay interfaces requiring stable component supply across production lifecycles.

Supply support for PZT3904,115 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 specializing in high-volume, high-reliability discrete and logic devices, with roots in Philips Semiconductors' legacy product lines.

The PZT3904,115 belongs to Nexperia's general-purpose bipolar transistor family, engineered for robustness and consistency in industrial automation, consumer electronics, and automotive body-control modules.

FAQ

What is the maximum continuous collector current rating for the PZT3904,115?

The PZT3904,115 has a maximum DC collector current (I_C) rating of 200 mA, specified under conditions where ambient temperature does not exceed 25 °C and the device is mounted on a PCB with a 1 cm² single-sided copper collector pad. Exceeding this current without derating risks thermal runaway or parametric shift.

Does the PZT3904,115 support high-frequency switching applications?

Yes, the PZT3904,115 supports high-frequency switching with a transition frequency (f_T) of 300 MHz at I_C = 10 mA and V_CE = 20 V, and measured switching times including t_on ≤65 ns and t_off ≤240 ns. These values validate its use in pulse-width modulation and digital signal buffering up to ~10 MHz.

What is the pin configuration of the PZT3904,115 in the SOT223 package?

The PZT3904,115 uses a 4-pin SOT223 package with pin 1 as base, pins 2 and 4 jointly connected to the collector (including the exposed thermal pad), and pin 3 as emitter. This dual-collector-pin layout enhances both electrical conductivity and thermal transfer to the PCB.

How does the PZT3904,115 compare to the PZT3906 in circuit design?

The PZT3904,115 is the NPN complement to the PZT3906 PNP transistor; they share identical SOT223 packaging, voltage ratings (V_CEO = 40 V), and thermal characteristics, enabling matched pair design in push-pull amplifiers, H-bridge drivers, and complementary logic interfaces without layout redesign.

Is the PZT3904,115 suitable for automotive applications?

The PZT3904,115 meets AEC-Q101 stress-test requirements for discrete semiconductors and is qualified for use in automotive body electronics such as lighting control, sensor interface circuits, and power window modules-provided operating junction temperature remains within the rated −65 °C to +150 °C range.