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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi BC560CZL1

Name: BC560CZL1
Brand: onsemi
SKU: BC560CZL1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC560CZL1

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: BC560CZL1.pdf

Description:: TRANS PNP 45V 0.1A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC560CZL1 from onsemi is a PNP silicon low-noise general-purpose transistor in TO-92 (TO-226AA) package, rated for V_CEO = –45 V, I_C = –100 mA, and P_D = 625 mW at T_A = 25°C, with h_FE = 460–800 at I_C = –2.0 mA and V_CE = –5.0 V, used in audio preamplifier stages and low-noise signal amplification.

For engineers reviewing the BC560CZL1 datasheet, pinout, applications, or equivalent options, key selection considerations include its guaranteed h_FE range, low noise figure (NF1 = 0.5 dB at I_C = –200 µA), f_T = 250 MHz, V_CE(sat) ≤ –0.25 V, and TO-92 mechanical compatibility with legacy through-hole designs.

Technical Context

The BC560CZL1 operates as a discrete PNP bipolar junction transistor optimized for low-noise analog amplification. Its design targets stable DC current gain (h_FE) across collector currents from –10 µA to –100 mA, with specified V_BE(on) = –0.55 to –0.7 V and V_CE(sat) ≤ –0.25 V at I_C/I_B = 10.

Thermal performance is defined by R_JA = 200°C/W and R_JC = 83.3°C/W, supporting operation from –55°C to +150°C. Small-signal behavior includes f_T = 250 MHz, C_cbo = 2.5 pF, and h_fe = 450–900 at 1 kHz, confirming suitability for audio-frequency and narrowband RF front-end use.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	–45 Vdc - Maximum safe collector-emitter voltage before breakdown under open-base conditions.
I_C	–100 mAdc - Continuous collector current rating; supports small-signal and driver-stage loads.
h_FE	460–800 - Guaranteed DC current gain at I_C = –2.0 mA, V_CE = –5.0 V; enables predictable biasing in linear amplifiers.
f_T	250 MHz - Transition frequency; confirms usable bandwidth up to mid-VHF for tuned amplifiers or oscillator buffers.
NF1	0.5 dB - Noise figure at I_C = –200 µA, R_S = 2 kΩ, 1 kHz; qualifies BC560CZL1 for high-fidelity microphone and phono preamp inputs.
R_JA	200°C/W - Junction-to-ambient thermal resistance; defines power derating slope (5.0 mW/°C above 25°C) in still-air PCB mounting.

Pinout & Package

BC560CZL1 uses the standard TO-92 (TO-226AA) plastic package per CASE 29–04, STYLE 17, with 3 leads in straight-line configuration and lead pitch of 2.54 mm. Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter, as marked on the flat side of the package body.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main current sink terminal	Connected to most negative supply rail in common-emitter amplifier; carries full load current and dissipates majority of heat.
2 (Base)	Control input node	Receives bias current to regulate collector current; requires series resistor to limit I_B and ensure stable h_FE-based operation.
3 (Emitter)	Current source reference terminal	Typically tied to ground or emitter-degeneration resistor; sets DC operating point and influences input impedance and linearity.

Key Features

Feature	Design Value
Low noise performance	NF1 = 0.5 dB at 1 kHz enables use in sensitive analog front-ends without added noise floor degradation.
High DC current gain	h_FE ≥ 460 ensures reliable bias stability and low base drive requirements in Class-A amplifiers.
Wide operating temperature	–55°C to +150°C junction range supports industrial and automotive under-hood applications with minimal derating.
Controlled saturation voltage	V_CE(sat) ≤ –0.25 V at I_C/I_B = 10 reduces conduction loss in switching and active-load configurations.

Applications

Audio Preamplifier Stage	Low-Noise Sensor Interface
Use Scenario: Amplifying weak signals from electret microphones or moving-coil phono cartridges before ADC or further gain stages. IC Role / Device Role / Timing Role: Discrete PNP transconductance amplifier providing first-stage voltage gain with minimal added noise. Use Value: NF1 = 0.5 dB and h_FE ≥ 460 preserve signal integrity and enable single-transistor gain ≥ 20 dB without feedback complexity.	Use Scenario: Conditioning output from piezoresistive pressure sensors or thermopile IR detectors in battery-powered instrumentation. IC Role / Device Role / Timing Role: Low-quiescent-current active load and DC-coupled amplifier stage operating at I_C = –200 µA. Use Value: Specified NF1 at 200 µA and V_BE(on) = –0.55 V allow precision biasing and sub-mV noise contribution in µA-level sensor interfaces.
Discrete Oscillator Buffer	Linear Voltage Regulator Pass Element
Use Scenario: Isolating and driving crystal oscillator outputs into 50 Ω loads or multiple logic inputs without frequency pulling. IC Role / Device Role / Timing Role: Emitter-follower buffer stage leveraging f_T = 250 MHz and low C_cbo = 2.5 pF. Use Value: High f_T and low capacitance minimize phase shift and loading effects, preserving oscillator stability and edge fidelity.	Use Scenario: Serving as pass transistor in adjustable linear regulators (e.g., LM317-based) requiring <100 mA output and low dropout. IC Role / Device Role / Timing Role: Series-pass element controlled via base bias network to regulate output voltage. Use Value: V_CEO = –45 V and V_CE(sat) ≤ –0.25 V support >30 V input-to-output differential with minimal headroom loss.

Audio Preamplifier Stage

Low-Noise Sensor Interface

Use Scenario: Amplifying weak signals from electret microphones or moving-coil phono cartridges before ADC or further gain stages.

IC Role / Device Role / Timing Role: Discrete PNP transconductance amplifier providing first-stage voltage gain with minimal added noise.

Use Value: NF1 = 0.5 dB and h_FE ≥ 460 preserve signal integrity and enable single-transistor gain ≥ 20 dB without feedback complexity.

Use Scenario: Conditioning output from piezoresistive pressure sensors or thermopile IR detectors in battery-powered instrumentation.

IC Role / Device Role / Timing Role: Low-quiescent-current active load and DC-coupled amplifier stage operating at I_C = –200 µA.

Use Value: Specified NF1 at 200 µA and V_BE(on) = –0.55 V allow precision biasing and sub-mV noise contribution in µA-level sensor interfaces.

Discrete Oscillator Buffer

Linear Voltage Regulator Pass Element

Use Scenario: Isolating and driving crystal oscillator outputs into 50 Ω loads or multiple logic inputs without frequency pulling.

IC Role / Device Role / Timing Role: Emitter-follower buffer stage leveraging f_T = 250 MHz and low C_cbo = 2.5 pF.

Use Value: High f_T and low capacitance minimize phase shift and loading effects, preserving oscillator stability and edge fidelity.

Use Scenario: Serving as pass transistor in adjustable linear regulators (e.g., LM317-based) requiring <100 mA output and low dropout.

IC Role / Device Role / Timing Role: Series-pass element controlled via base bias network to regulate output voltage.

Use Value: V_CEO = –45 V and V_CE(sat) ≤ –0.25 V support >30 V input-to-output differential with minimal headroom loss.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC559C	V_CEO = –30 V (vs. –45 V); h_FE = 460–800 same range; identical TO-92 package and pinout.	Limited to ≤30 V supply rails; unsuitable for higher-voltage audio or regulator applications where BC560CZL1's –45 V rating is required.	Select BC559C only when system voltage remains ≤25 V and cost sensitivity outweighs voltage margin needs.
PN2907A	V_CEO = –60 V; h_FE = 100–300 (lower and wider spread); NF not specified; f_T = 200 MHz.	Better voltage headroom but higher noise and less predictable gain; suitable for switching or medium-fidelity amplification, not low-noise analog.	Choose PN2907A when absolute max voltage >45 V is critical and noise performance is secondary to ruggedness.

Compared with BC559C and PN2907A, BC560CZL1 uniquely balances –45 V rating, guaranteed high h_FE, and 0.5 dB noise figure-making it the preferred choice for voltage-margin-constrained, low-noise linear circuits where gain predictability and signal fidelity are prioritized over raw voltage headroom or cost minimization.

Availability

BC560CZL1 is available at Aetrix Electronics and suitable for audio preamplifier stages, low-noise sensor interfaces, and discrete oscillator buffers requiring stable component supply, consistent h_FE binning, and TO-92 mechanical compatibility.

Supply support for BC560CZL1 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The BC560CZL1 belongs to onsemi's legacy general-purpose bipolar transistor family, designed specifically for cost-sensitive, high-reliability linear amplification and switching in through-hole assembled equipment where low noise, stable gain, and wide temperature operation are essential.

FAQ

What is the maximum collector-emitter voltage rating for BC560CZL1?

The BC560CZL1 has a maximum collector-emitter voltage rating (V_CEO) of –45 Vdc, tested under open-base conditions with I_C = –10 mAdc. This rating allows safe operation in circuits with up to 45 V negative supply rails, exceeding the –30 V rating of the BC559 series and enabling broader use in higher-voltage analog stages.

Does BC560CZL1 have a specified noise figure, and under what conditions?

Yes, BC560CZL1 specifies two noise figures: NF1 = 0.5 dB (typical) at I_C = –200 µAdc, V_CE = –5.0 Vdc, R_S = 2.0 kΩ, f = 1.0 kHz, and NF2 = 10 dB at R_S = 100 kΩ. These values confirm its qualification for ultra-low-noise preamplifier roles where input-referred noise must remain below 1 nV/√Hz.

What is the guaranteed DC current gain (h_FE) range for BC560CZL1?

The BC560CZL1 guarantees h_FE between 460 and 800 when measured at I_C = –2.0 mAdc and V_CE = –5.0 Vdc. This tight, high-gain binning supports stable Class-A biasing and reduces sensitivity to part-to-part variation in gain-critical analog designs.

Is BC560CZL1 compatible with standard TO-92 footprints and assembly processes?

Yes, BC560CZL1 uses the industry-standard TO-92 (TO-226AA) package per CASE 29–04, STYLE 17, with 2.54 mm lead pitch and defined dimensions (e.g., A = 4.45–5.20 mm, L = 6.35 mm). It is fully compatible with automated through-hole insertion, wave soldering, and manual prototyping using generic TO-92 sockets or PCB footprints.

What thermal derating applies to BC560CZL1 above 25°C ambient?

BC560CZL1 has a total device dissipation of 625 mW at T_A = 25°C, derated linearly at 5.0 mW/°C above that temperature. At 75°C ambient, maximum allowable power drops to 375 mW. This derating is based on R_JA = 200°C/W and assumes still-air mounting on a standard FR-4 PCB without heatsinking.

BC560CZL1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 380 @ 2mA, 5V

Power - Max:: 625 mW

Frequency - Transition:: 250MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

BC560CZL1 FAQ

1.How can I place an order for BC560CZL1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC560CZL1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BC560CZL1 reliable?

The price and inventory of BC560CZL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC560CZL1 is usually 5 days.

3.What payment methods are accepted for BC560CZL1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC560CZL1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC560CZL1?

BC560CZL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC560CZL1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BC560CZL1?

For technical support, including BC560CZL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC560CZL1 requirements.

6.How does Aetrix verify that BC560CZL1 is sourced from the original manufacturer or authorized distributors?

All BC560CZL1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BC560CZL1 meets industry standards.

7.What is the process for return or replacement of BC560CZL1?

All BC560CZL1 units undergo pre-shipment inspection (PSI). If there is an issue with BC560CZL1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BC560CZL1 part is unused and in its original packaging.

Return procedure for BC560CZL1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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