Nexperia USA Inc. BCX55-16TF

Overview

BCX55-16TF from Nexperia is a 60 V, 1 A NPN power bipolar transistor in SOT89 (SC-62) surface-mount package, designed for medium-power linear and switching applications including MOSFET drivers and low-side switches. It delivers h_FE = 100–250 at V_CE = 2 V and I_C = 150 mA, supports 2 A peak collector current, and is AEC-Q101 qualified for automotive use.

For engineers reviewing the BCX55-16TF datasheet, BCX55-16TF pinout, BCX55-16TF application, or BCX55-16TF equivalent, this device is selected for stable gain performance under pulsed conditions (t_p ≤ 300 μs), thermal robustness on FR4 PCBs with extended collector pad area, and reliable operation in linear voltage regulators requiring low V_CE(sat) and controlled base drive.

Technical Context

This NPN power transistor operates with open-base V_CEO = 60 V and V_CBO = 60 V, enabling use in 48 V automotive and industrial supply rails. Its DC current gain is binned to 100–250 (BCX55-16T grade), specified under pulsed conditions (δ ≤ 0.02) to ensure consistency across temperature and current stress.

Thermal design relies on three mounting configurations: standard footprint (R_th(j-a) = 250 K/W), 1 cm² collector pad (157 K/W), or 6 cm² pad (114 K/W), directly linking PCB layout to safe operating area (SOA) and continuous power handling up to 1100 mW.

Key Specifications

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, single-sided copper FR4 mountable with optional collector thermal pad (up to 6 cm²).

Key Features

Applications

Availability

BCX55-16TF is available at Aetrix Electronics and suitable for automotive power management, industrial linear regulators, and embedded MOSFET driver designs requiring stable component supply and long-term lifecycle support.

Supply support for BCX55-16TF 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 leadership in automotive-qualified components and advanced packaging.

The BCX55T series belongs to Nexperia's power bipolar portfolio engineered for medium-power analog and switching functions in harsh-environment applications - emphasizing thermal resilience, gain consistency, and AEC-Q101 compliance.

FAQ

What is the maximum continuous collector current for BCX55-16TF at 75 °C ambient?

At T_amb = 75 °C with a 6 cm² collector pad on FR4, BCX55-16TF sustains 1 A continuous collector current. Derating begins above 75 °C per Fig. 1: power dissipation drops linearly to ~700 mW at 125 °C ambient, maintaining safe junction temperature below 150 °C.

Is BCX55-16TF pin-compatible with BCX54 or BCX56 series?

No - BCX55-16TF uses SOT89 (3-pin, emitter-collector-base order), while BCX54/BCX56 are in SOT23 packages with different pinouts (emitter-base-collector). Mechanical and electrical incompatibility prevents drop-in replacement; PCB layout and schematic must be revised.

How does the h_FE binning affect base resistor selection in a 5 V MCU-driven switch?

With h_FE = 100–250, a 5 V MCU GPIO driving through a 1 kΩ base resistor delivers I_B ≈ 4.3 mA (accounting for V_BE ≈ 0.7 V), supporting I_C up to 430–1075 mA. For guaranteed 1 A saturation, use ≤ 680 Ω to ensure minimum I_B ≥ 5 mA across the bin.

Can BCX55-16TF replace BCX55-10T in an existing design?

Yes - both share identical package, voltage/current ratings, and thermal specs; only h_FE differs (100–250 vs. 63–160). Higher gain reduces required base drive but may increase sensitivity to leakage or noise; verify stability in linear regulator feedback paths before substitution.