onsemi SS9014CBU

Overview

SS9014CBU from ON Semiconductor is an NPN epitaxial silicon transistor designed for low-noise pre-amplification in audio and signal conditioning circuits, with hFE of 200–600 (Class C), VCEO = 45 V, IC = 100 mA, and fT = 150–270 MHz. It operates in TO-92 package and delivers low VBE(sat) = 0.84–1.0 V at IC = 100 mA/IB = 5 mA.

For engineers reviewing the SS9014CBU datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain classification (Class C), noise figure (0.9–10 dB at 1 kHz), output capacitance (2.2–3.5 pF), saturation voltage performance, and complementary pairing with SS9015 for differential stages.

Technical Context

The SS9014CBU is a general-purpose NPN bipolar junction transistor optimized for low-level analog amplification where linearity and low noise are critical. Its Class C hFE range (200–600) ensures consistent biasing in small-signal amplifier designs, while its 150–270 MHz fT supports operation up to VHF band in oscillator and RF pre-driver roles.

It features low Cob = 2.2–3.5 pF at VCB = 10 V, enabling stable high-frequency response without excessive Miller effect, and maintains VCE(sat) ≤ 0.3 V under 100 mA/5 mA drive-critical for efficient active-load and switching-regulator auxiliary circuits.

Key Specifications

Pinout & Package

SS9014CBU is housed in a standard through-hole TO-92 package (3.60 × 4.58 × 14.47 mm), with lead spacing matching JEDEC TO-92 outline. Pin 1 is Emitter, Pin 2 is Base, Pin 3 is Collector - verified per Fairchild Rev. A4 datasheet and ON Semiconductor package drawings.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal transistor applications.

Compared with BC547C and 2N3904, SS9014CBU offers tighter Class C hFE (200–600), lower noise floor (0.9 dB min), and guaranteed VCEO = 45 V - making it preferable for low-distortion analog gain where parameter consistency matters more than raw speed.

Availability

SS9014CBU is available at Aetrix Electronics and suitable for audio pre-amplifiers, sensor signal conditioning circuits, and oscillator designs requiring stable component supply and consistent hFE grading.

Supply support for SS9014CBU 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

ON Semiconductor (formerly Fairchild Semiconductor) is a global semiconductor manufacturer specializing in power management, analog, and discrete devices for automotive, industrial, and consumer applications.

The SS9014CBU belongs to ON Semiconductor's legacy small-signal transistor product line, engineered specifically for low-noise, high-linearity analog amplification and complementary circuit design with SS9015.

FAQ

What is the hFE classification for SS9014CBU?

The SS9014CBU is classified as Class C, with a guaranteed DC current gain (hFE) range of 200 to 600 at VCE = 5 V and IC = 1 mA. This classification ensures predictable biasing in linear amplifier stages and distinguishes it from Class A (60–150) or Class D (400–1000) variants in the SS9014 family. The hFE value is measured and binned during final test per ON Semiconductor's quality process.

Is SS9014CBU pin-compatible with other SS9014 variants?

Yes, all SS9014 variants-including SS9014CBU-share identical TO-92 pinout (Emitter-Base-Collector on pins 1-2-3) and mechanical footprint. The suffix "CBU" denotes Class C hFE binning and tape-and-reel packaging per ON Semiconductor's updated nomenclature (replacing underscore with dash post-Fairchild integration). Electrical parameters remain consistent across same-class variants.

What is the maximum operating temperature for SS9014CBU?

The SS9014CBU has a maximum junction temperature (TJ) of 150°C and a storage temperature range of −55°C to +150°C. At ambient temperatures up to 50°C, the device can safely dissipate its full 450 mW rating in free-air conditions using the TO-92 package, assuming no additional PCB copper heatsinking. Derating is required above 50°C ambient per the specified thermal resistance curve.

Does SS9014CBU have a complementary PNP transistor?

Yes, the SS9014CBU is explicitly designed as the NPN complement to the SS9015 PNP transistor. Both share matched electrical characteristics-including comparable hFE ranges, VCEO/VECO ratings, and TO-92 packaging-enabling balanced differential pair implementation, push-pull output stages, and current mirror configurations without external trimming.

Can SS9014CBU be used in RF amplifier applications?

Yes, the SS9014CBU supports RF amplifier use up to approximately 100 MHz due to its fT of 150–270 MHz and low output capacitance (Cob = 2.2–3.5 pF). It is commonly deployed in VHF oscillator cores and low-power RF pre-amplifiers where low noise and moderate gain are prioritized over ultra-high-speed switching. For >200 MHz operation, higher-fT alternatives like MMBT2222A are recommended.