onsemi BC560_J35Z

Overview

BC560_J35Z from onsemi is a PNP epitaxial silicon transistor optimized for low-noise amplification and general-purpose switching, with V_CEO = −45 V, h_FE up to 800 (Class C), and f_T = 150 MHz. It operates in audio preamplifier stages, sensor signal conditioning circuits, and discrete logic-level inverters where low base-emitter voltage drop and stable gain at low currents are critical.

For engineers reviewing the BC560_J35Z datasheet, pinout, applications, or equivalent options, key selection criteria include its low-noise figure (1.2–2.0 dB at 1 kHz), TO-92-3 package compatibility, complementary pairing with BC546–BC550 NPN series, and verified performance under −5 V V_CE, −2 mA I_C bias conditions.

Technical Context

The BC560_J35Z belongs to the BC556–BC560 family of high-voltage PNP transistors, sharing identical TO-92-3 packaging (Case 135AR) and thermal characteristics (R_JA = 250 °C/W). Its design emphasizes low-noise operation-specifically rated at 1.2–2.0 dB NF (V_CE = −5 V, I_C = −200 µA, f = 1 kHz, R_G = 2 kΩ)-and supports linear amplification across −100 mA I_C DC and −200 mA pulsed collector current.

It features a V_CBO of −50 V and V_EBO of −5 V, enabling use in negative-rail biasing schemes up to −45 V collector-emitter swing. The device is Pb-free, halogen-free/BFR-free, and RoHS compliant, with junction temperature rating up to 150 °C and storage range from −65 to +150 °C.

Key Specifications

Pinout & Package

BC560_J35Z is housed in a TO-92-3 plastic package (Case 135AR), with standard leadform orientation: flat side facing viewer, leads downward, left-to-right pin order as Collector–Base–Emitter.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC559CTA and BC807-40, BC560_J35Z delivers the highest h_FE and lowest noise figure in the through-hole PNP portfolio, making it optimal for discrete low-noise amplifiers where gain stability and signal integrity are prioritized over package miniaturization.

Availability

BC560_J35Z is available at Aetrix Electronics and suitable for audio preamplifier stages, sensor signal conditioning circuits, and discrete logic-level inverters requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.

Supply support for BC560_J35Z 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 delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and consumer electronics markets.

The BC560_J35Z belongs to the BC556–BC560 family of general-purpose PNP transistors engineered for low-noise amplification and reliable switching in cost-sensitive, through-hole-based analog and mixed-signal applications.

FAQ

What is the maximum collector-emitter voltage rating for BC560_J35Z?

The BC560_J35Z has a maximum collector-emitter voltage (V_CEO) rating of −45 V. This value is confirmed in the Absolute Maximum Ratings table of the official onsemi datasheet (Rev. 3, June 2024) and defines the largest reverse-biased voltage the transistor can withstand between collector and emitter terminals while remaining in the active or saturated region without breakdown. Exceeding this limit risks permanent damage.

Is BC560_J35Z suitable for low-noise audio amplifier applications?

Yes, BC560_J35Z is explicitly characterized for low-noise operation, with a noise figure (NF) of 1.2–2.0 dB at 1 kHz (V_CE = −5 V, I_C = −200 µA, R_G = 2 kΩ). This specification is documented in the Electrical Characteristics table of the onsemi datasheet and makes BC560_J35Z appropriate for microphone preamplifiers, instrument amplifiers, and other analog front-end stages where signal integrity is critical.

What package type does BC560_J35Z use, and what are its mechanical identifiers?

BC560_J35Z uses the TO-92-3 plastic package, specifically Case 135AR per onsemi's mechanical drawings. Its dimensions are 4.83 mm × 4.76 mm, with leadformed (bent) leads. The marking "BC560C" appears on the device body, and pin 1 is Collector, pin 2 is Base, pin 3 is Emitter - verified in the Marking Diagram and Package Dimensions sections of the datasheet.

How does the h_FE classification of BC560_J35Z compare to other variants in the BC556–BC560 family?

BC560_J35Z corresponds to the BC560C variant, which has an h_FE range of 420–800 at V_CE = −5 V and I_C = −2 mA. This is the highest gain bin in the family - BC560A is 110–220, BC560B is 200–450. The datasheet confirms this classification in the h_FE Classification table and distinguishes BC560C as the preferred choice for high-gain, low-base-current applications.

Can BC560_J35Z be used as a direct replacement for BC559C in existing designs?

BC560_J35Z and BC559C share identical V_CEO (−45 V), package (TO-92-3 Case 135AR), pinout, and absolute maximum ratings, but differ in h_FE (BC559C: 200–450; BC560_J35Z: 420–800) and noise figure (BC559C: 1.2–4.0 dB; BC560_J35Z: 1.2–2.0 dB). While electrically compatible and physically interchangeable, BC560_J35Z offers superior gain and lower noise - no PCB changes are needed, but biasing may require minor adjustment for optimal linearity.