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onsemi BC547BNMBU
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- Part No.:
- BC547BNMBU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
BC547BNMBU.pdf
- Description:
- TRANS NPN 45V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
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Product details
Overview
BC547BNMBU from ON Semiconductor is an NPN epitaxial silicon transistor designed for general-purpose switching and amplification in low-power analog and digital circuits. It features VCEO = 45 V, IC = 100 mA, PC = 500 mW, hFE range of 200–450 (Class B), and TO-92 package - commonly used in signal conditioning stages of sensor interfaces and discrete logic level shifting.
For engineers reviewing the BC547BNMBU datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain consistency at 2 mA collector bias, VCE(sat) ≤ 250 mV at IC = 10 mA / IB = 0.5 mA, noise figure < 10 dB at 1 kHz, and compatibility with through-hole prototyping and legacy PCB layouts.
Technical Context
This transistor operates as a single-element active switch or small-signal amplifier with fixed-emitter biasing topology. Its epitaxial base construction enables stable hFE across temperature and supports reliable operation up to TJ = 150°C.
It is not a Darlington or RF-optimized device: fT = 300 MHz is specified only at VCE = 5 V, IC = 10 mA, and does not imply broadband RF suitability. Cob = 3.5–6.0 pF and Cib = 9 pF confirm suitability for audio and low-MHz digital signal paths, not GHz applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - maximum safe collector-emitter voltage before breakdown; defines rail headroom in 24 V or lower DC supply switching. |
| IC (DC) | 100 mA - continuous collector current limit; suitable for driving LEDs, relays, or small solenoids directly. |
| PC | 500 mW - thermal dissipation limit at TA = 25°C; requires derating above 25°C ambient per datasheet curve. |
| hFE | 200–450 (Class B) - DC current gain at VCE = 5 V, IC = 2 mA; ensures predictable base drive sizing in linear amplifier designs. |
| VCE(sat) | 90–250 mV - saturation voltage at IC = 10 mA / IB = 0.5 mA; enables low-loss switching in battery-powered logic interfaces. |
| fT | 300 MHz - current-gain bandwidth product under specified test conditions; validates usable gain up to ~10–50 MHz in tuned amplifier stages. |
Pinout & Package
BC547BNMBU is housed in a JEDEC TO-92 3-lead molded plastic package with straight leads (bulk packing). Pin 1 is Collector, Pin 2 is Base, Pin 3 is Emitter - verified per Fairchild/ON Semiconductor mechanical drawings and ordering information tables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Collector) | Output current terminal | Connected to load or higher-voltage rail; carries full switched current; thermally coupled to case for heat path. |
| 2 (Base) | Control input terminal | Receives current-limited drive signal; base resistance must be sized to ensure IB ≥ IC/hFE(min) for saturation. |
| 3 (Emitter) | Reference current terminal | Typically tied to ground or common return; establishes emitter-follower or common-emitter topology reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Switching & amplification dual use | Validated by hFE stability across IC = 0.1–100 mA and low VCE(sat), enabling reuse across signal chain stages without redesign. |
| Low-noise performance | Noise figure ≤ 10 dB at 1 kHz (VCE = 5 V, IC = 200 μA, RG = 2 kΩ) supports audio preamp and sensor front-end applications. |
| TO-92 mechanical standardization | JEDEC-compliant footprint ensures compatibility with legacy sockets, wave solder fixtures, and hand-soldering workflows. |
| Complementary PNP pairing | Direct complement to BC557 series (e.g., BC557B), enabling push-pull output stages and differential amplifiers without custom bias networks. |
Applications
| Audio Pre-amplifier Stage | Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying weak microphone or piezoelectric sensor outputs in portable audio recorders. IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with emitter degeneration. Use Value: hFE ≥ 200 and NF ≤ 10 dB at 1 kHz enable >40 dB voltage gain with minimal added noise in battery-operated systems. | Use Scenario: Converting and buffering analog outputs from temperature or light sensors before ADC sampling. IC Role / Device Role / Timing Role: Unity-gain emitter follower providing impedance transformation between high-Z sensor and low-Z ADC input. Use Value: Low VBE(on) (580–700 mV) and stable hFE ensure accurate DC-level translation without loading sensor output. |
| Digital Logic Level Shifting | Relay / LED Driver Interface |
Use Scenario: Translating 3.3 V microcontroller GPIO signals to 5 V or 12 V logic domains in industrial control panels. IC Role / Device Role / Timing Role: Saturated switch operating in cutoff/saturation regions with defined turn-on/turn-off thresholds. Use Value: VCE(sat) ≤ 250 mV at IC = 10 mA guarantees < 0.25 V drop across collector-emitter, preserving logic HIGH margin. | Use Scenario: Driving 12 V relay coils or high-brightness indicator LEDs from MCU GPIO pins. IC Role / Device Role / Timing Role: Current amplifier switching load between supply rail and ground under base-current control. Use Value: IC = 100 mA rating and PC = 500 mW allow direct drive of 50–100 mA loads without external heat sinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC547BTA | Same die, TO-92 ammo pack; identical electrical specs and pinout. | No functional difference; differs only in packaging format (ammo vs. bulk). | Select BC547BTA for automated pick-and-place assembly; BC547BNMBU for manual prototyping or repair. |
| 2N3904 | VCEO = 40 V (vs. 45 V); hFE min = 100 (vs. 200); VCE(sat) max = 300 mV at same test condition. | Marginally lower voltage headroom and gain; acceptable where 5 V margin suffices and gain tolerance >100 is acceptable. | Choose 2N3904 only if existing BOM uses it and layout allows revalidation of base drive and voltage margins. |
Compared with BC547BTA, BC547BNMBU offers identical performance in bulk form for hand-soldered builds; versus 2N3904, BC547BNMBU provides +5 V higher VCEO, +100 minimum hFE, and tighter VCE(sat), making it preferable for 24 V industrial interfaces and precision analog gain stages.
Availability
BC547BNMBU is available at Aetrix Electronics and suitable for audio preamplifiers, sensor signal conditioning, digital level shifting, and relay/LED driver interfaces requiring stable component supply across prototyping, pilot production, and long-life industrial deployments.
Supply support for BC547BNMBU 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 is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud infrastructure markets.
The BC547 series belongs to ON Semiconductor's legacy general-purpose bipolar transistor product line, designed for cost-sensitive, high-reliability linear and switching applications in consumer, industrial, and communication equipment.
FAQ
What is the pin configuration of BC547BNMBU?
The BC547BNMBU uses a standard TO-92 package with pin 1 as Collector, pin 2 as Base, and pin 3 as Emitter - confirmed by Fairchild/ON Semiconductor mechanical drawings and ordering documentation. This configuration is consistent across all BC547 variants and matches industry-standard TO-92 pinout conventions for NPN transistors.
What hFE range does BC547BNMBU specify?
The BC547BNMBU is a Class B device with hFE ranging from 200 to 450 when measured at VCE = 5 V and IC = 2 mA. This gain band is explicitly defined in the official datasheet and applies directly to BC547BNMBU - not inferred from other variants like BC547A or BC547C.
Is BC547BNMBU suitable for RF applications?
The BC547BNMBU has an fT of 300 MHz under specific test conditions (VCE = 5 V, IC = 10 mA), but it is not characterized or qualified for RF amplifier or oscillator use. Its Cob and Cib values, lack of S-parameter data, and absence of RF-specific packaging make it appropriate only for low-MHz signal paths - not RF front-ends or transmitter stages.
Does BC547BNMBU have a lead-free and RoHS-compliant version?
Yes, BC547BNMBU is manufactured and supplied in a lead-free, RoHS-compliant form per ON Semiconductor's environmental compliance policy. The "NMBU" suffix indicates bulk packaging and confirms compliance with EU RoHS Directive 2011/65/EU and related substance restrictions as documented in ON Semiconductor's material declarations.
How does BC547BNMBU differ from BC547BTA?
BC547BNMBU and BC547BTA share identical die, electrical specifications, and pinout; the only difference is packaging - BC547BNMBU is supplied in bulk (loose units), while BC547BTA comes in ammo packaging for automated assembly. Both are Class B transistors with hFE = 200–450 and VCEO = 45 V.
BC547BNMBU 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:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 500 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
BC547BNMBU FAQ
1.How can I place an order for BC547BNMBU through Aetrix?
Please submit a Request for Quotation (RFQ) for BC547BNMBU 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 BC547BNMBU reliable?
The price and inventory of BC547BNMBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC547BNMBU is usually 5 days.
3.What payment methods are accepted for BC547BNMBU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC547BNMBU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC547BNMBU?
BC547BNMBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC547BNMBU 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 BC547BNMBU?
For technical support, including BC547BNMBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC547BNMBU requirements.
6.How does Aetrix verify that BC547BNMBU is sourced from the original manufacturer or authorized distributors?
All BC547BNMBU 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 BC547BNMBU meets industry standards.
7.What is the process for return or replacement of BC547BNMBU?
All BC547BNMBU units undergo pre-shipment inspection (PSI). If there is an issue with BC547BNMBU, 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 BC547BNMBU part is unused and in its original packaging.
Return procedure for BC547BNMBU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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