onsemi BC63916-D74Z

Overview

BC63916-D74Z from onsemi is an NPN epitaxial silicon transistor designed for medium-power switching and linear amplification, with V_CEO = 80 V, I_C = 1 A, h_FE = 100–250 at I_C = 150 mA, f_T = 100 MHz, and TO-92-3 package. It operates across −55°C to +150°C and supports automotive body control modules requiring robust DC gain stability.

For engineers reviewing the BC63916-D74Z datasheet, pinout, applications, or equivalent options, key selection criteria include its 80 V V_CEO, 1 A continuous collector current capability, dual h_FE ranges (25 at 5 mA / 100–250 at 150 mA), low 0.5 V V_CE(sat) at 500 mA, and Pb-free TO-92-3 packaging compliant with industrial temperature requirements.

Technical Context

This NPN bipolar junction transistor uses epitaxial base construction to achieve high f_T (100 MHz) and stable h_FE across wide current ranges. Its breakdown ratings-V_CER = 100 V (with R_BE = 1 kΩ), V_CES = 100 V, and V_CEO = 80 V-define safe operating limits under open-base, shorted-base, and standard common-emitter configurations respectively.

Thermal performance is characterized by R_JA = 150 °C/W on a standard FR-4 PCB (76 mm × 114 mm), enabling 830 mW dissipation at 25°C ambient with 6.6 mW/°C derating. The device sustains operation up to +150°C junction temperature, supporting under-hood automotive and industrial power-stage designs where thermal margin is critical.

Key Specifications

Pinout & Package

BC63916-D74Z is housed in a Pb-free TO-92-3 plastic package (Case 135AR), with 4.83 mm × 4.76 mm footprint and bent leads. Standard leadform orientation places Emitter (E), Base (B), and Collector (C) at pins 1, 2, and 3 respectively when viewing the flat side with leads down and tab up.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC63916-D74Z, BC639-16 offers identical performance with simplified ordering, while MPSA42 trades current capacity for higher voltage tolerance-making BC63916-D74Z the preferred choice for balanced 80 V / 1 A switching where thermal margin and gain consistency are prioritized.

Availability

BC63916-D74Z is available at Aetrix Electronics and suitable for automotive body electronics, industrial relay interfacing, DC motor control, and analog signal amplification requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC63916-D74Z 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The BC63916-D74Z belongs to onsemi's general-purpose bipolar transistor product line, engineered for cost-effective, thermally robust switching and amplification in safety-critical and high-reliability applications where consistent DC gain and transient voltage tolerance are essential.

FAQ

What is the maximum collector-emitter voltage rating for BC63916-D74Z?

The BC63916-D74Z has a V_CEO rating of 80 V, defined as the maximum collector-emitter voltage with open base at T_A = 25°C. This rating applies to standard common-emitter configurations and must be derated per thermal conditions. Exceeding this voltage risks avalanche breakdown and permanent device failure. Always verify operating margins against worst-case load dump or inductive kick scenarios in BC63916-D74Z deployments.

Does BC63916-D74Z support operation at elevated temperatures?

Yes, BC63916-D74Z is rated for junction temperatures from −55°C to +150°C. Its thermal resistance R_JA is 150 °C/W on a standard FR-4 PCB, allowing 830 mW dissipation at 25°C ambient with linear derating above that point. This makes BC63916-D74Z suitable for under-hood automotive modules and industrial enclosures where ambient temperatures exceed 85°C, provided heatsinking or airflow is considered in BC63916-D74Z thermal design.

What is the typical current gain (h_FE) of BC63916-D74Z at 150 mA collector current?

The BC63916-D74Z exhibits h_FE between 100 and 250 when tested at V_CE = 2 V and I_C = 150 mA. This range reflects process variation and supports robust base drive design for saturated switching. For BC63916-D74Z applications requiring guaranteed minimum gain, use h_FE = 100 to size base resistors or current sources, ensuring reliable turn-on even at temperature extremes or end-of-life parametric drift.

Is BC63916-D74Z pin-compatible with other TO-92 NPN transistors?

BC63916-D74Z uses the standard TO-92-3 package with E-B-C pinout (pins 1–2–3), matching common NPN devices like BC639-16 and MPSA42. However, electrical parameters-including V_CEO, I_C, and h_FE-differ significantly across variants. While physical board layout may accommodate direct replacement, functional equivalence requires validation of voltage, current, and gain requirements in each BC63916-D74Z application context.

What is the saturation voltage V_CE(sat) for BC63916-D74Z under typical switching conditions?

BC63916-D74Z achieves V_CE(sat) ≤ 0.5 V when biased with I_C = 500 mA and I_B = 50 mA at T_A = 25°C. This low saturation voltage reduces conduction losses in switching applications such as relay drivers and motor controls. For BC63916-D74Z designs targeting minimal power dissipation, ensure base drive meets or exceeds 50 mA to maintain deep saturation across temperature and unit-to-unit variation.