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

onsemi BC560BTA

Name: BC560BTA
Brand: onsemi
SKU: BC560BTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC560BTA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Datasheet:: BC560BTA.pdf

Description:: TRANS PNP 45V 0.1A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC560BTA from onsemi is a PNP epitaxial silicon transistor designed for low-noise amplification and general-purpose switching in analog and digital circuits. It features V_CEO = −45 V, h_FE = 200–450 (Class B), f_T = 150 MHz, and V_BE(on) = −600 to −750 mV at I_C = −2 mA - enabling use in audio preamplifiers, signal conditioning stages, and discrete logic interfaces.

For engineers reviewing the BC560BTA datasheet, pinout, applications, or equivalent options, key selection criteria include its low-noise performance (NF = 1.2–2.0 dB), TO-92-3 package compatibility, Class B h_FE range, −45 V V_CEO rating, and Pb-free/RoHS-compliant construction for industrial and consumer-grade designs.

Technical Context

The BC560BTA operates as a medium-power, low-noise PNP bipolar junction transistor optimized for linear amplification and saturated switching. Its h_FE classification (B: 200–450) ensures predictable DC gain stability across production lots, while f_T = 150 MHz supports high-fidelity audio and RF front-end applications up to mid-VHF.

Thermal design is constrained by R_JA = 250 °C/W and P_D = 500 mW at T_A = 25 °C, with derating at 4.0 mW/°C above ambient. The device's Cob = 6 pF and V_CE(sat) = −250 to −650 mV (at I_C = −100 mA) support fast switching and minimal Miller-effect distortion in emitter-follower or common-emitter configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Supports operation in negative-rail circuits up to 45 V collector-to-emitter reverse bias without breakdown.
h_FE (Class B)	200–450 - Enables stable current amplification in bias-sensitive analog stages like microphone preamps and differential pairs.
f_T	150 MHz - Permits use in wideband amplifiers and RF detector circuits up to ~100 MHz with usable gain margin.
NF	1.2–2.0 dB @ 1 kHz - Confirmed low-noise performance critical for high-SNR audio signal chains and sensor interface amplifiers.
V_CE(sat)	−250 to −650 mV @ I_C = −100 mA - Ensures low conduction loss and efficient saturation in discrete switch implementations.
P_D	500 mW @ 25°C - Defines maximum continuous power dissipation before thermal derating begins; requires heatsinking above ~70°C ambient.
Cob	6 pF @ V_CB = −10 V - Limits high-frequency feedback and stabilizes amplifier phase margin in tuned or broadband designs.

Pinout & Package

BC560BTA is housed in a TO-92-3 plastic package (Case 135AR), lead-formed for through-hole mounting. Dimensions: 4.83 mm × 4.76 mm footprint with standard 2.54 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main current sink terminal	Connected to most negative potential in PNP configuration; carries full load current and dissipates majority of heat.
2 (Base)	Control input node	Receives small forward-biased current to regulate collector-emitter conduction; requires series resistor for current limiting in switching apps.
3 (Emitter)	Current source reference	Typically tied to circuit ground or positive rail; establishes bias point and defines V_BE threshold for turn-on.

Key Features

Feature	Design Value
Low-noise amplification	NF = 1.2–2.0 dB enables high-fidelity audio gain stages without audible hiss or signal degradation.
High-voltage PNP operation	V_CEO = −45 V allows direct integration into −48 V telecom supplies, industrial control rails, and legacy analog systems.
Class B h_FE binning	Guaranteed 200–450 DC current gain improves matching in differential pairs and reduces calibration overhead in production.
Pb-free / RoHS-compliant	Meets global environmental regulations without requiring process requalification or exemption documentation.
TO-92-3 mechanical standardization	Ensures drop-in replacement compatibility with BC556–BC560 family and legacy BC557/BC558 designs.

Applications

Audio Preamp Stage	Discrete Logic Inverter
Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC sampling. IC Role / Device Role / Timing Role: PNP common-emitter amplifier providing 20–40 dB voltage gain with minimal added noise. Use Value: NF = 1.2–2.0 dB preserves SNR in battery-powered voice recorders and IoT acoustic sensors.	Use Scenario: Level-shifting and inversion of TTL/CMOS signals in mixed-voltage interface circuits. IC Role / Device Role / Timing Role: Saturated PNP switch operating as active-low inverter with <100 ns propagation delay. Use Value: V_CE(sat) ≤ −650 mV ensures clean logic '0' output and robust noise immunity in 5 V/3.3 V hybrid systems.
Current Mirror Reference	Linear Voltage Regulator Pass Element
Use Scenario: Precision bias current generation in op-amp input stages or analog front-ends. IC Role / Device Role / Timing Role: Matched PNP pair configured as two-transistor current mirror with h_FE-compensated output. Use Value: Tight h_FE Class B binning (200–450) minimizes mirror ratio error and improves temperature tracking.	Use Scenario: Series pass element in adjustable negative LDO regulators for analog subsystems. IC Role / Device Role / Timing Role: Linear-mode PNP transistor regulating output voltage via base-emitter control loop. Use Value: V_CEO = −45 V supports −36 V output regulation with 9 V headroom, meeting industrial supply requirements.

Audio Preamp Stage

Discrete Logic Inverter

Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC sampling.

IC Role / Device Role / Timing Role: PNP common-emitter amplifier providing 20–40 dB voltage gain with minimal added noise.

Use Value: NF = 1.2–2.0 dB preserves SNR in battery-powered voice recorders and IoT acoustic sensors.

Use Scenario: Level-shifting and inversion of TTL/CMOS signals in mixed-voltage interface circuits.

IC Role / Device Role / Timing Role: Saturated PNP switch operating as active-low inverter with <100 ns propagation delay.

Use Value: V_CE(sat) ≤ −650 mV ensures clean logic '0' output and robust noise immunity in 5 V/3.3 V hybrid systems.

Current Mirror Reference

Linear Voltage Regulator Pass Element

Use Scenario: Precision bias current generation in op-amp input stages or analog front-ends.

IC Role / Device Role / Timing Role: Matched PNP pair configured as two-transistor current mirror with h_FE-compensated output.

Use Value: Tight h_FE Class B binning (200–450) minimizes mirror ratio error and improves temperature tracking.

Use Scenario: Series pass element in adjustable negative LDO regulators for analog subsystems.

IC Role / Device Role / Timing Role: Linear-mode PNP transistor regulating output voltage via base-emitter control loop.

Use Value: V_CEO = −45 V supports −36 V output regulation with 9 V headroom, meeting industrial supply requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC557BTA	V_CEO = −45 V (same), but NF = 2–10 dB (higher noise); h_FE Class B identical	Suitable for general switching where noise is non-critical; not recommended for audio preamps	Select BC557BTA only when cost sensitivity outweighs noise performance requirements.
BC559BTA	V_CEO = −30 V (lower), NF = 1.2–4.0 dB (slightly higher), same h_FE Class B	Limited to ≤−24 V rails; acceptable in low-voltage portable audio but not industrial −48 V systems	Choose BC559BTA only if system rail voltage is ≤−30 V and space-constrained TO-92 layout is mandatory.

Compared with BC557BTA and BC559BTA, the BC560BTA delivers superior low-noise performance (1.2–2.0 dB vs. ≥2 dB) and higher voltage tolerance (−45 V vs. −30 V), making it the optimal choice for precision analog and industrial-grade negative-rail amplification where both SNR and headroom are critical.

Availability

BC560BTA is available at Aetrix Electronics and suitable for audio preamplifiers, discrete logic interfaces, and negative-voltage linear regulators requiring stable component supply, consistent h_FE binning, and RoHS-compliant packaging.

Supply support for BC560BTA 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 manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The BC560BTA belongs to onsemi's legacy BC5xx PNP transistor family, engineered for high-reliability analog signal conditioning and discrete switching in cost-sensitive, high-volume applications where thermal stability and noise performance are essential.

FAQ

What is the maximum collector-emitter voltage rating for BC560BTA?

The BC560BTA has a guaranteed V_CEO rating of −45 V at T_A = 25 °C. This means it can safely block up to 45 V of reverse voltage between collector and emitter in PNP operation. Exceeding this value risks avalanche breakdown and permanent damage. Derating is required at elevated temperatures per the datasheet thermal curves.

Is BC560BTA suitable for low-noise audio amplification?

Yes, BC560BTA 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, and R_G = 2 kΩ. This makes BC560BTA appropriate for microphone preamplifiers, phono stages, and other high-SNR analog signal paths where added noise must be minimized.

What h_FE range does BC560BTA have, and how is it binned?

The BC560BTA is binned to Class B, with a guaranteed DC current gain (h_FE) range of 200 to 450 measured at V_CE = −5 V and I_C = −2 mA. This binning ensures predictable gain behavior across production units, supporting repeatable biasing in amplifier and current-mirror designs without individual unit calibration.

What package type and lead form does BC560BTA use?

The BC560BTA uses the TO-92-3 plastic package (Case 135AR) with lead-formed (bent) terminals for through-hole PCB assembly. Its mechanical outline matches JEDEC TO-92 standards, with dimensions of 4.83 mm × 4.76 mm and standard 2.54 mm lead spacing - ensuring compatibility with legacy footprints and automated insertion equipment.

How does BC560BTA differ from BC556BTA in terms of voltage rating and application focus?

BC560BTA has V_CEO = −45 V and is optimized for low-noise amplification, whereas BC556BTA has V_CEO = −65 V and is specified for high-voltage switching. BC560BTA's NF = 1.2–2.0 dB makes it preferred for audio and sensor signal chains; BC556BTA's higher breakdown supports relay drivers and HV logic interfaces where noise is secondary.

BC560BTA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA) 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:: 650mV @ 5mA, 100mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2mA, 5V

Power - Max:: 500 mW

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

BC560BTA FAQ

1.How can I place an order for BC560BTA through Aetrix?

Please submit a Request for Quotation (RFQ) for BC560BTA 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 BC560BTA reliable?

The price and inventory of BC560BTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC560BTA is usually 5 days.

3.What payment methods are accepted for BC560BTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC560BTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC560BTA?

BC560BTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC560BTA 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 BC560BTA?

For technical support, including BC560BTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC560BTA requirements.

6.How does Aetrix verify that BC560BTA is sourced from the original manufacturer or authorized distributors?

All BC560BTA 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 BC560BTA meets industry standards.

7.What is the process for return or replacement of BC560BTA?

All BC560BTA units undergo pre-shipment inspection (PSI). If there is an issue with BC560BTA, 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 BC560BTA part is unused and in its original packaging.

Return procedure for BC560BTA:

1.Submit a request within 90 days.

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

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