NXP Semiconductors BC327-16,112

Overview

BC327-16,112 from Nexperia is a PNP general-purpose bipolar junction transistor in TO-92 (SOT54) package, rated for −45 V V_CEO, −500 mA I_C, and 625 mW P_tot, with DC current gain (h_FE) of 100–250 at I_C = −100 mA and V_CE = −1 V. It serves as a low-voltage, medium-current switch or amplifier in discrete power control stages.

For engineers reviewing the BC327-16,112 datasheet, BC327-16,112 pinout, BC327-16,112 application, or BC327-16,112 equivalent, this page delivers verified electrical parameters, through-hole pin configuration, thermal resistance (R_th(j-a) = 200 K/W), complementary NPN pairing (BC337), and real-world switching use cases - all confirmed from Nexperia's official BC807/BC327 product data sheet Rev. 06 (2009).

Technical Context

The BC327-16,112 operates as a silicon PNP BJT with fixed gain binning (−16 variant), optimized for linear amplification and saturated switching in ambient temperatures from −65 °C to +150 °C. Its base-emitter saturation voltage (V_BE(sat)) is ≤ −1.2 V at I_C = −500 mA, and collector-emitter saturation voltage (V_CE(sat)) is ≤ −700 mV under same conditions.

It features low leakage: ICBO ≤ −100 nA at V_CB = −20 V and T_amb = 25 °C, and IEBO ≤ −100 nA at V_EB = −5 V. Its transition frequency f_T is 80 MHz at I_C = −10 mA, V_CE = −5 V, confirming suitability for audio-frequency and low-speed digital switching applications.

Key Specifications

Pinout & Package

BC327-16,112 uses the SOT54 (TO-92) through-hole plastic package per JEITA SC-43A, with 3 leads and standard lead pitch of 2.54 mm. The package supports manual soldering and wave soldering, and provides mechanical robustness for industrial board-level assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC327-25,112 and BC327-40,112, the BC327-16,112 provides the most balanced trade-off between base drive predictability, thermal stability, and saturation efficiency - making it the default choice for industrial control and power management where reliability trumps marginal gain improvement.

Availability

BC327-16,112 is available at Aetrix Electronics and suitable for relay driver stages, LED current switches, level translation interfaces, and discrete inverter amplifiers requiring stable component supply, long-term obsolescence resilience, and full traceability.

Supply support for BC327-16,112 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, consumer, and wearable markets.

The BC327-16,112 belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-effective, reliable switching and amplification in high-volume industrial and consumer electronics.

FAQ

What is the maximum collector-emitter voltage rating for BC327-16,112?

The BC327-16,112 has a maximum collector-emitter voltage (V_CEO) rating of −45 V with open base and I_C = 10 mA. This value is confirmed in Table 2 (Quick reference data) and Table 6 (Limiting values) of the Nexperia BC807/BC327 datasheet Rev. 06. Exceeding this voltage risks avalanche breakdown and permanent device failure. The BC327-16,112 must not be used in circuits where transient or steady-state V_CE exceeds this absolute maximum rating.

Does BC327-16,112 have the same pinout as BC337?

Yes, BC327-16,112 and its NPN complement BC337 share identical SOT54 (TO-92) pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This matching pin configuration is explicitly documented in Table 3 (Pinning) of the BC807/BC327 datasheet and enables direct substitution in complementary circuits such as push-pull output stages or differential pairs without PCB redesign.

What is the thermal resistance from junction to ambient for BC327-16,112?

The thermal resistance from junction to ambient (R_th(j-a)) for BC327-16,112 is 200 K/W when mounted on an FR4 PCB with single-sided copper, tin-plated, and standard footprint - as specified in Table 7 of the Nexperia datasheet. This value assumes no heatsink and defines the temperature rise per watt of dissipated power: e.g., at 300 mW dissipation, junction temperature rises ≈60 °C above ambient.

How does the h_FE range of BC327-16,112 compare to BC327-25,112?

The BC327-16,112 has a DC current gain (h_FE) range of 100–250 at I_C = −100 mA and V_CE = −1 V, while BC327-25,112 is binned to 160–400 under identical test conditions. This difference is defined in Table 2 and Table 8 of the datasheet. The −16 variant prioritizes gain consistency and lower thermal drift, whereas the −25 variant trades some stability for higher minimum gain in low-drive applications.

Is BC327-16,112 suitable for audio-frequency amplification?

Yes, BC327-16,112 is suitable for audio-frequency amplification up to approximately 10 kHz due to its 80 MHz transition frequency (f_T) and stable h_FE characteristics across temperature. Measured in Table 8 and validated by Figures 1–3, its gain remains linear in the 20 Hz–20 kHz band when biased appropriately. However, it is not optimized for high-fidelity line-level stages; it excels in pre-amplifier buffering and sensor signal conditioning where cost and robustness outweigh ultra-low-noise requirements.