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onsemi BC560BU
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- Part No.:
- BC560BU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
BC560BU.pdf
- Description:
- TRANS PNP 45V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,933
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Product details
Overview
BC560BU from onsemi is a PNP epitaxial silicon transistor optimized for low-noise amplification and general-purpose switching, with VCEO = −45 V, hFE up to 800 (Class C), fT = 150 MHz, and noise figure as low as 1.2 dB at 1 kHz - used in audio preamplifier stages and signal conditioning circuits.
For engineers reviewing the BC560BU datasheet, pinout, applications, or equivalent options, key selection criteria include its low-noise performance, TO-92-3 package compatibility, complementary pairing with BC546–BC550 series, and suitability for linear amplification where VCE ≤ −45 V and IC ≤ −100 mA.
Technical Context
The BC560BU operates as a medium-power PNP bipolar junction transistor with epitaxial base construction enabling high current gain linearity and stable fT across temperature. Its low-noise design targets analog front-end applications requiring NF ≤ 2.0 dB at 1 kHz with IC = −200 µA and RG = 2 kΩ.
It shares the TO-92-3 (Case 135AN) mechanical outline with straight leads and is electrically characterized at TA = 25°C, with thermal resistance RJA = 250 °C/W and maximum power dissipation PD = 500 mW derated above 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in common-emitter amplifier or switch configurations. |
| hFE (Min/Max) | 420 to 800 - DC current gain range for Class C devices; ensures predictable biasing and gain stability in low-current linear amplifiers. |
| fT | 150 MHz - Current gain bandwidth product at VCE = −5 V, IC = −10 mA; supports audio and low-RF signal amplification up to ~100 MHz. |
| Noise Figure | 1.2–2.0 dB - Measured at 1 kHz, VCE = −5 V, IC = −200 µA, RG = 2 kΩ; enables high-fidelity audio preamp stage design with minimal signal degradation. |
| VBE(sat) | −700 to −900 mV - Base-emitter saturation voltage at IC = −10 to −100 mA; critical for accurate saturation modeling in switching applications. |
| PD / RJA | 500 mW / 250 °C/W - Thermal limits define PCB copper area requirements; requires ≥76 mm × 114 mm FR-4 board for full-rated power dissipation. |
Pinout & Package
BC560BU is housed in a TO-92-3 plastic package (Case 135AN), with straight leads and marking "BC560B" on the device body. Dimensions: 4.825 mm × 4.76 mm × 3.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Collector | Main current sink terminal; connects to negative supply rail in PNP common-emitter configurations. |
| 2 | Base | Control input; reverse-biased relative to emitter to turn on; requires current-limiting resistor in discrete bias networks. |
| 3 | Emitter | Current source terminal; typically tied to ground or positive rail depending on topology; sets reference for VBE and bias point. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise amplification | 1.2 dB NF at 1 kHz enables use in microphone preamps and sensor signal chains without added noise floor penalty. |
| High hFE consistency | Class C hFE = 420–800 ensures tight gain matching across units in multi-stage amplifier designs. |
| Complementary NPN pairing | Designed as direct complement to BC546–BC550 series, simplifying push-pull and differential pair layout in analog circuits. |
| Pb-free, RoHS-compliant | Meets IPC/JEDEC J-STD-020 moisture sensitivity level 1; supports lead-free reflow assembly without special handling. |
Applications
| Audio Preamp Stage | Signal Conditioning Amplifier |
|---|---|
|
Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC sampling. IC Role / Device Role / Timing Role: PNP small-signal amplifier in common-emitter configuration with emitter degeneration. Use Value: 1.2 dB noise figure and 150 MHz fT preserve SNR and bandwidth integrity for signals up to 20 kHz. |
Use Scenario: DC-coupled gain block in industrial sensor interface modules with ±15 V rails. IC Role / Device Role / Timing Role: Linear amplifier with fixed bias network delivering stable 20–40 dB voltage gain. Use Value: High hFE (420–800) and low VBE(on) variation (−600 to −750 mV) ensure consistent gain across temperature and unit variance. |
| Discrete Switch Driver | Complementary Pair Output Stage |
|
Use Scenario: Driving LED arrays or relay coils from microcontroller GPIO with inverted logic. IC Role / Device Role / Timing Role: Saturated PNP switch controlling load connected between emitter and VCC. Use Value: VCE(sat) ≤ −300 mV at IC = −10 mA minimizes conduction loss and self-heating during continuous operation. |
Use Scenario: Push-pull output stage in Class AB audio amplifier with BC546B/BC547B as NPN counterpart. IC Role / Device Role / Timing Role: Complementary PNP output transistor matched to NPN partner for symmetrical drive capability. Use Value: Identical TO-92-3 footprint and compatible hFE/VCE(sat) specs enable balanced crossover distortion reduction and thermal tracking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC559CTA | Higher VCEO = −30 V, lower hFE max = 800 (Class C), same NF = 1.2–4.0 dB; TO-92-3 (135AR), lead-formed. | Less suitable for −45 V rail applications; preferred where tighter VCE margin and fan-fold packaging required. | Select BC559CTA only if VCE stress remains below −30 V and lead-formed orientation is needed for automated insertion. |
| BC856BTT1G | SOT-23 package, VCEO = −65 V, hFE = 220–475, NF = 10 dB @ 1 kHz; surface-mount, higher power density. | Not pin-compatible; requires PCB redesign; better for space-constrained designs but sacrifices low-noise advantage. | Choose BC856BTT1G when board space is critical and noise performance is secondary to footprint reduction and higher voltage tolerance. |
Compared with BC559CTA and BC856BTT1G, the BC560BU delivers superior low-noise performance (1.2 dB NF) and higher VCEO than BC559CTA while retaining through-hole manufacturability - making it optimal for cost-sensitive, noise-critical audio and sensor front-ends where TO-92 placement is preferred.
Availability
BC560BU is available at Aetrix Electronics and suitable for audio preamplifiers, industrial sensor interfaces, discrete switching circuits, and complementary transistor pair designs requiring stable component supply and long-term obsolescence management.
Supply support for BC560BU 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 management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The BC560BU belongs to onsemi's legacy BC5xx PNP/NPN transistor family, engineered for robustness, low-noise analog performance, and broad compatibility in discrete amplifier and switching applications across industrial and audio systems.
FAQ
What is the maximum collector-emitter voltage rating for BC560BU?
The BC560BU has a maximum collector-emitter voltage (VCEO) rating of −45 V at TA = 25°C. This rating applies under DC conditions and defines the upper limit for safe operation in common-emitter amplifier or switching topologies. Exceeding this voltage risks avalanche breakdown and permanent device damage. Derating is required at elevated ambient temperatures per the datasheet thermal curves.
Is BC560BU suitable for low-noise audio applications?
Yes, the BC560BU is explicitly characterized for low-noise operation with a noise figure of 1.2–2.0 dB at 1 kHz (VCE = −5 V, IC = −200 µA, RG = 2 kΩ). Its epitaxial silicon structure and Class C hFE binning make it well-suited for microphone preamplifiers, phono stages, and other high-SNR analog signal paths where noise contribution must be minimized.
What package type and pin configuration does BC560BU use?
The BC560BU uses the TO-92-3 plastic package (Case 135AN) with straight leads and a standardized pinout: Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter. This mechanical outline matches industry-standard through-hole mounting requirements and is compatible with manual soldering and wave solder processes on FR-4 PCBs.
How does BC560BU compare to BC559C in terms of noise performance and voltage rating?
The BC560BU offers identical low-noise performance (NF = 1.2–2.0 dB) to BC559C but supports a higher VCEO rating of −45 V versus −30 V for BC559C. Both are Class C devices with hFE up to 800, but BC560BU's extended voltage headroom makes it preferable in designs operating near −40 V rails, while BC559C is limited to lower-voltage applications.
Can BC560BU be used as a direct replacement for BC557B in existing designs?
No - BC560BU is not a direct replacement for BC557B due to differences in absolute maximum ratings: BC557B has VCEO = −45 V (same), but its hFE range is 200–450 (Class B) versus 420–800 (Class C) for BC560BU, and its noise figure is 2–10 dB versus 1.2–2.0 dB. Circuit biasing and gain may shift; validation is required before substitution.
BC560BU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- 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:
- 110 @ 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
BC560BU FAQ
1.How can I place an order for BC560BU through Aetrix?
Please submit a Request for Quotation (RFQ) for BC560BU 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 BC560BU reliable?
The price and inventory of BC560BU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC560BU is usually 5 days.
3.What payment methods are accepted for BC560BU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC560BU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC560BU?
BC560BU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC560BU 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 BC560BU?
For technical support, including BC560BU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC560BU requirements.
6.How does Aetrix verify that BC560BU is sourced from the original manufacturer or authorized distributors?
All BC560BU 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 BC560BU meets industry standards.
7.What is the process for return or replacement of BC560BU?
All BC560BU units undergo pre-shipment inspection (PSI). If there is an issue with BC560BU, 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 BC560BU part is unused and in its original packaging.
Return procedure for BC560BU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC560BU Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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