onsemi PN2369A_D27Z

Overview

PN2369A_D27Z from Fairchild Semiconductor is an NPN switching transistor optimized for high-speed saturated switching at collector currents from 10 mA to 100 mA, with V_CEO = 15 V, I_C = 200 mA continuous, and t_off = 18 ns at V_CC = 3.0 V - used in low-power digital logic interface and pulse generation circuits.

For engineers reviewing the PN2369A_D27Z datasheet, pinout, applications, or equivalent options, key selection criteria include saturation voltage (V_CE(sat) = 0.2 V @ I_C = 10 mA/I_B = 1.0 mA), thermal resistance (R_θJA = 556 °C/W in SOT-23), and TO-92/SOT-23 dual-package availability per EOL code D27Z.

Technical Context

The PN2369A_D27Z implements a silicon planar epitaxial NPN structure fabricated in Fairchild's Process 21, supporting fast switching via low storage time (t_s = 13 ns) and controlled base-emitter saturation behavior (V_BE(sat) = 0.7 V @ I_C = 10 mA/I_B = 1.0 mA).

Its electrical performance is characterized across –55°C to +125°C ambient, with guaranteed h_FE ≥ 40 at I_C = 10 mA/V_CE = 1.0 V and C_obo = 4.0 pF at V_CB = 5.0 V - enabling stable operation in compact timing and level-shifting circuits without external compensation.

Key Specifications

Pinout & Package

PN2369A_D27Z is supplied in TO-92 package (EOL code D27Z denotes tape-and-reel packaging with emitter-first orientation, adhesive tape on top side, flat side down). The device has three terminals: Collector (C), Base (B), Emitter (E).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBT2369A, PN2369A_D27Z offers identical core switching performance in TO-92 packaging for through-hole prototyping and legacy repair, while PN2222A trades speed for voltage headroom - making PN2369A_D27Z optimal for cost-sensitive, high-frequency digital switching below 15 V.

Availability

PN2369A_D27Z is available at Aetrix Electronics and suitable for logic level translation, LED driver switching, pulse generator output stages, and relay driver interfaces requiring stable component supply across industrial, medical, and test equipment programs.

Supply support for PN2369A_D27Z 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 (now part of ON Semiconductor) is a global designer of high-performance analog and discrete semiconductors, founded in 1957 and known for innovation in power management and signal-path components.

The PN2369A_D27Z belongs to Fairchild's legacy NPN switching transistor product line, engineered specifically for high-speed saturated operation in space-constrained digital interface and control circuits.

FAQ

What is the package type and orientation for PN2369A_D27Z?

PN2369A_D27Z uses the TO-92 package with EOL code D27Z indicating tape-and-reel packaging where the first wire off the package is the emitter, adhesive tape is on the top side, and the flat side of the transistor faces downward. This orientation is standardized per Fairchild's TO-92 Tape and Reel Data Rev. B1.

Does PN2369A_D27Z support operation at elevated temperatures?

Yes, PN2369A_D27Z is rated for junction temperatures from –55°C to +150°C. Electrical characteristics including h_FE and V_CE(sat) are guaranteed over this full range, with derated power dissipation above 25°C (2.8 mW/°C for TO-92). Its Process 21 silicon ensures stable gain and leakage up to +125°C ambient.

What is the typical storage time (t_s) of PN2369A_D27Z and why does it matter?

PN2369A_D27Z has a typical storage time t_s of 13 ns under standard test conditions (I_B1 = I_B2 = I_C = 10 mA). This parameter directly limits maximum switching frequency - shorter t_s enables faster turn-off and cleaner square-wave output in digital logic and PWM applications, distinguishing it from slower general-purpose transistors like PN2222A.

Can PN2369A_D27Z be used as a direct replacement for PN2222A in existing designs?

PN2369A_D27Z is not a drop-in replacement for PN2222A due to lower V_CEO (15 V vs. 40 V) and significantly faster switching (t_off = 18 ns vs. 250 ns), which may cause unintended oscillation if base drive impedance is mismatched. It can replace PN2222A only in low-voltage (<15 V), high-speed applications where its tighter h_FE tolerance and lower V_CE(sat) provide benefit.

What are the thermal resistance values for PN2369A_D27Z in TO-92 package?

For PN2369A_D27Z in TO-92 package, R_θJA = 357 °C/W and R_θJC = 125 °C/W, measured on FR-4 PCB (1.6" × 1.6" × 0.06"). Total device dissipation is 350 mW at 25°C, derating linearly by 2.8 mW/°C above that temperature - requiring careful layout if operating near thermal limits in enclosed environments.