Nexperia USA Inc. PBHV8540T,215

Overview

PBHV8540T,215 from Nexperia is an NPN high-voltage bipolar junction transistor in SOT23 package, rated for 500 V V_CESM, 0.5 A continuous collector current, and low 135 mV typical V_CEsat at I_C = 300 mA / I_B = 60 mA. It serves as a robust switching element in high-voltage DC-DC stages and LED chain drivers where low conduction loss and voltage headroom are critical.

For engineers reviewing the PBHV8540T,215 datasheet, PBHV8540T,215 pinout, PBHV8540T,215 application, or PBHV8540T,215 equivalent, key selection criteria include verified V_CEsat performance at 300 mA, thermal resistance R_th(j-sp) of 70 K/W, SOT23 footprint compatibility, and confirmed 400 V V_CEO rating under open-base conditions.

Technical Context

This transistor employs a planar epitaxial process optimized for high-voltage blocking and low saturation voltage trade-off. Its 500 V V_CESM rating enables use in flyback snubber circuits and HID lamp igniters where transient overvoltage exceeds 400 V.

The device delivers h_FE ≥ 80 at I_C = 100 mA and maintains usable gain (h_FE ≥ 10) even at I_C = 300 mA (pulsed), supporting stable base drive design across industrial temperature range (−55 °C to 150 °C).

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, tin-plated terminations compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZTX851 and MMBT5551, PBHV8540T,215 uniquely balances 500 V blocking, SOT23 compactness, and sub-150 mV V_CEsat, making it optimal for space-limited, high-voltage LED and lighting control where thermal and voltage margins are simultaneously constrained.

Availability

PBHV8540T,215 is available at Aetrix Electronics and suitable for electronic ballasts, LED chain drivers, and LCD backlighting requiring stable component supply with guaranteed long-term sourcing.

Supply support for PBHV8540T,215 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 logic, discrete, and MOSFET devices, with manufacturing rooted in process optimization and automotive-grade quality systems.

PBHV8540T,215 belongs to Nexperia's high-voltage bipolar transistor family designed specifically for energy-efficient lighting, industrial power conversion, and telecom interface circuits demanding rugged 400+ V operation in miniature packages.

FAQ

What is the maximum safe operating voltage for PBHV8540T,215 in continuous DC mode?

The absolute maximum V_CEO is 400 V with base open, and this is the recommended upper limit for continuous DC blocking applications. While V_CESM reaches 500 V, that rating applies only to non-repetitive peak conditions (e.g., ignition spikes in HID lamps). For sustained operation-such as in SMPS primary-side switching-400 V is the design ceiling to ensure reliability and lifetime compliance.

Can PBHV8540T,215 replace a MOSFET in low-frequency switching applications?

Yes, but with design adjustments: its bipolar nature requires continuous base current (e.g., 60 mA for 300 mA collector load), unlike MOSFET gate charging. It excels in <500 kHz applications where low V_CEsat and high-voltage tolerance outweigh gate-drive complexity-especially in cost-sensitive LED drivers where MOSFET gate drivers add BOM cost.

Is PBHV8540T,215 qualified for automotive use?

No. Per Nexperia's 2023 revision history, PBHV8540T,215 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and is not warranted for under-hood or safety-critical vehicle systems. For automotive motor management, Nexperia offers the −Q qualified PBHV8540T,215Q variant with full qualification documentation.

How does thermal performance compare between PBHV8540T,215 and similar SOT23 transistors?

PBHV8540T,215 achieves R_th(j-sp) = 70 K/W-among the lowest for SOT23-packaged HV BJTs-due to optimized die attach and leadframe design. This is ~30% better than typical SOT23 HV transistors (e.g., ~100 K/W), allowing ~250 mW dissipation before exceeding 125 °C junction temperature on standard FR4, crucial for thermally dense lighting modules.