onsemi 2N5366_D26Z

Overview

2N5366_D26Z from Fairchild Semiconductor is a PNP general-purpose amplifier transistor in TO-92 package, rated for V_CEO = 40 V, I_C = 500 mA continuous, h_FE = 80–300 (at V_CE = 10 V, I_C = 2.0 mA), V_CE(sat) ≤ 1.0 V (I_C = 300 mA, I_B = 30 mA), and operating junction temperature up to +150°C - used in low-frequency linear amplification and switching circuits in industrial control modules.

For engineers reviewing the 2N5366_D26Z datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, TO-92 mechanical compatibility, DC current gain consistency across 2–300 mA bias points, saturation voltage at high collector current, and thermal resistance (R_θJA = 200°C/W) for passive-heatsink-limited designs.

Technical Context

This device operates as a silicon PNP bipolar junction transistor with fixed emitter-base and collector-base breakdown limits (V_EBO = 4.0 V, V_CBO = 40 V), supporting linear amplification up to 300 mA collector current and switching duty with guaranteed V_CE(sat) ≤ 1.0 V at I_C = 300 mA / I_B = 30 mA. Its small-signal h_fe ranges from 80 to 450 at 1 MHz, indicating usable bandwidth for audio and low-speed digital interface buffering.

Thermal design relies on R_θJA = 200°C/W and maximum power dissipation of 625 mW at T_A = 25°C, derating linearly at 5.0 mW/°C above ambient - requiring careful PCB copper area allocation when operated near I_C = 300 mA in enclosed enclosures.

Key Specifications

Pinout & Package

2N5366_D26Z is housed in a standard TO-92 plastic package with 3 leads. Pin identification is fixed: Lead 1 = Emitter, Lead 2 = Collector, Lead 3 = Base - verified by Fairchild's official package drawing and marking orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPSA92 and BC557B, the 2N5366_D26Z uniquely balances 40 V breakdown, 300 mA operational current, and sub-1.0 V saturation - making it the only option among the three validated for sustained 200–300 mA PNP switching with thermal margin in TO-92.

Availability

2N5366_D26Z is available at Aetrix Electronics and suitable for relay driver circuits, DC motor control modules, audio pre-amplifier stages, and industrial 4–20 mA transmitter designs requiring stable component supply and long-term obsolescence management.

Supply support for 2N5366_D26Z 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

Fairchild Semiconductor was a U.S.-based semiconductor manufacturer specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 2N5366_D26Z belongs to Fairchild's legacy general-purpose bipolar transistor product line, designed specifically for cost-sensitive, medium-current linear amplification and switching in industrial and consumer equipment.

FAQ

What is the pin configuration of the 2N5366_D26Z?

The 2N5366_D26Z uses a standardized TO-92 package with pinout: Lead 1 = Emitter, Lead 2 = Collector, Lead 3 = Base - confirmed by Fairchild's Rev. A1 datasheet and mechanical drawings. This configuration is consistent across all 2N5366 variants and enables direct substitution in existing TO-92 PNP layouts without rework.

Does the 2N5366_D26Z support switching at 300 mA collector current?

Yes, the 2N5366_D26Z is explicitly characterized for switching at I_C = 300 mA with V_CE(sat) ≤ 1.0 V at I_B = 30 mA, and its absolute maximum rating supports 500 mA continuous. Thermal design must account for R_θJA = 200°C/W - sustained 300 mA operation requires adequate PCB copper area or ambient derating.

Is the 2N5366_D26Z RoHS compliant?

The 2N5366_D26Z was manufactured prior to RoHS enforcement deadlines and predates formal RoHS certification. It contains leaded solder in the die attach and lead frame plating. For new designs requiring RoHS compliance, consult Aetrix Electronics for qualified drop-in alternatives with documented exemption status or modern replacements.

What is the minimum h_FE guaranteed for the 2N5366_D26Z at 300 mA?

The 2N5366_D26Z datasheet specifies h_FE = 40 (min) at V_CE = 5.0 V and I_C = 300 mA. This value is guaranteed across the operating temperature range and forms the basis for base drive resistor calculation in high-current switching applications.

Can the 2N5366_D26Z replace the 2N5366 without modification?

Yes, the 2N5366_D26Z is a factory-marked variant of the base 2N5366, sharing identical electrical specifications, TO-92 package, pinout, and thermal characteristics. The "_D26Z" suffix denotes Fairchild's internal date/batch code and does not indicate functional differentiation - it is a direct replacement in all documented applications.