My Inquiry
My Account
onsemi BC847BWT1
- Part No.:
- BC847BWT1
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
BC847BWT1.pdf
- Description:
- TRANSISTOR NPN 45V 100MA SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:465,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC847BWT1 from onsemi is an NPN silicon general-purpose transistor in SC-70 (SOT-323) package, rated for 45 V VCEO, 100 mA IC, and 200–450 hFE at IC = 2 mA / VCE = 5 V. It delivers low VCE(sat) (0.25 V max at IC = 10 mA / IB = 0.5 mA) and operates across −55 °C to +150 °C, commonly used in signal switching and amplification in portable power management circuits.
For engineers reviewing the BC847BWT1 datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q101 qualification, Pb-free RoHS-compliant construction, 200 mW power dissipation at TA = 25 °C, fT = 100 MHz, and validated performance in automotive body electronics and industrial sensor interface stages.
Technical Context
This device belongs to the BC846/BC847/BC848 family of low-power NPN transistors optimized for surface-mount amplifier and switching functions. Its hFE binning (B-grade) guarantees minimum DC current gain of 200 at IC = 2 mA and VCE = 5 V, with typical values reaching 290–450 under same conditions.
The BC847BWT1 features a maximum collector-emitter breakdown voltage of 45 V, emitter-base breakdown of 6.0 V, and thermal resistance RJA = 620 °C/W on FR-5 board - enabling reliable operation in space-constrained, thermally unmanaged PCB layouts where junction temperature must remain below 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-to-emitter voltage before avalanche breakdown in open-base configuration. |
| IC (max) | 100 mA - Continuous collector current limit defining linear/saturation region usability in bias networks. |
| hFE | 200–450 - Confirmed DC current gain range at IC = 2 mA / VCE = 5 V, supporting predictable base drive sizing. |
| VCE(sat) | 0.25 V (max) - Low saturation voltage ensures minimal power loss and heat generation in switching applications. |
| fT | 100 MHz - Transition frequency confirming usable bandwidth for audio-frequency amplification and digital signal routing. |
| PD | 200 mW - Total device dissipation on FR-5 board at 25 °C ambient, setting thermal derating baseline for layout design. |
| Cobo | 4.5 pF - Output capacitance limiting high-frequency response and affecting stability in RF-coupled stages. |
Pinout & Package
BC847BWT1 is housed in SC-70 (SOT-323), a 3-pin surface-mount plastic package measuring 2.0 × 1.25 × 0.95 mm with gull-wing leads. The package supports automated placement and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal accepting input current to modulate collector-emitter conduction; requires current-limiting resistor in most driver configurations. |
| 2 | Emitter | Reference node for biasing; typically grounded or connected to low-impedance return path in common-emitter topologies. |
| 3 | Collector | Output terminal sourcing current to load; connects to supply rail or pull-up network depending on switching mode (low-side vs. high-side). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body control modules and lighting drivers requiring PPAP compliance. |
| Pb-free, RoHS compliant | Meets EU Directive 2011/65/EU and halogen-free/BFR-free requirements for environmentally constrained designs. |
| SC-70/SOT-323 package | Enables <1.5 mm² board area usage and compatibility with standard 0.65 mm pitch pick-and-place equipment. |
| −55 °C to +150 °C operating range | Supports deployment in under-hood automotive environments and industrial enclosures without external thermal management. |
| Low VBE(on) | 660–770 mV at IC = 2 mA / VCE = 5 V - simplifies logic-level interfacing with 3.3 V and 5 V microcontrollers. |
Applications
| Automotive Door Module Switching | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving LED indicators and small solenoids in vehicle door latch assemblies under battery-voltage fluctuations (9–16 V). IC Role / Device Role / Timing Role: NPN switch controlling current flow to loads via microcontroller GPIO, operating in saturation mode. Use Value: 0.25 V VCE(sat) minimizes power loss and self-heating during continuous 50–80 mA duty cycles at ambient up to 85 °C. |
Use Scenario: Amplifying low-level analog outputs (e.g., 0–100 mV) from pressure or temperature sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with fixed bias network, delivering stable gain over temperature. Use Value: 100 MHz fT and 200–450 hFE ensure flat frequency response up to 10 kHz and consistent amplification across production lots. |
| Portable Battery Management | Consumer Audio Signal Routing |
Use Scenario: Enabling/disabling charging paths or fuel-gauge reference circuits in handheld medical devices powered by Li-ion cells. IC Role / Device Role / Timing Role: Low-leakage switch isolating subsystems during sleep mode, leveraging 15 nA ICBO at 25 °C. Use Value: Ultra-low cutoff current preserves standby battery life over months while maintaining fast turn-on (<100 ns) when awakened. |
Use Scenario: Multiplexing audio signals between headphone outputs and speaker drivers in Bluetooth-enabled speakers. IC Role / Device Role / Timing Role: Discrete current buffer stage preventing source impedance mismatch and preserving signal integrity. Use Value: 4.5 pF Cobo and 10 dB NF at 1 kHz support clean audio transmission without audible distortion or crosstalk. |
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 |
|---|---|---|---|
| BC847BW,115 (Nexperia) | Same SC-70 package, identical pinout, but hFE min = 200 at IC = 10 mA (not 2 mA); VCEO = 45 V, VCE(sat) = 0.25 V max. | Validated in consumer appliance motor drivers where higher test-current hFE specification aligns with system-level validation protocols. | Select when sourcing from dual-source supply chains and requiring full traceability to Nexperia's automotive-grade manufacturing site. |
| MMBT3904LT1G (onsemi) | Same package and pinout; VCEO = 40 V (5 V lower), hFE = 100–300 at IC = 10 mA, VCE(sat) = 0.2 V max at IC = 50 mA. | Preferred in cost-sensitive IoT sensor nodes where marginally lower voltage rating is acceptable and tighter VCE(sat) improves efficiency at higher currents. | Choose when optimizing for lowest possible saturation loss above 30 mA or when redesigning legacy MMBT3904-based boards with minimal layout change. |
Compared with BC847BWT1, BC847BW,115 offers identical mechanical and electrical behavior but differs in hFE test condition, while MMBT3904LT1G trades 5 V VCEO margin for improved saturation performance at medium currents - both require verification of gain stability and thermal limits in final application context.
Availability
BC847BWT1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable battery management systems requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle continuity.
Supply support for BC847BWT1 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, and cloud infrastructure markets.
The BC847BWT1 belongs to onsemi's general-purpose bipolar transistor product line, engineered for robust, low-cost signal amplification and switching in space-constrained surface-mount applications demanding reliability across extended temperature ranges.
FAQ
What is the maximum collector-emitter voltage rating for BC847BWT1?
The BC847BWT1 has a maximum collector-emitter voltage (VCEO) rating of 45 V, verified per onsemi's datasheet Rev. 13 under test condition IC = 10 mA with open base. Exceeding this voltage risks avalanche breakdown and irreversible device damage, especially at elevated junction temperatures.
Is BC847BWT1 suitable for automotive applications?
Yes, BC847BWT1 is AEC-Q101 qualified and PPAP capable, with S-prefix ordering variants (e.g., SBC847BWT1G*) explicitly designated for automotive use. Its −55 °C to +150 °C operating range, Pb-free construction, and validated reliability testing meet stringent automotive electronics requirements.
What is the DC current gain (hFE) range for BC847BWT1 at typical operating conditions?
At IC = 2.0 mA and VCE = 5.0 V, the BC847BWT1 exhibits hFE between 200 (minimum) and 450 (maximum), with typical values around 290–350. This gain binning is confirmed in the Electrical Characteristics table on page 2 of the official datasheet.
Does BC847BWT1 have a defined thermal resistance value?
Yes, BC847BWT1 has a specified thermal resistance from junction to ambient (RJA) of 620 °C/W when mounted on an FR-5 board at TA = 25 °C. This value enables accurate junction temperature estimation using PD = 200 mW maximum dissipation and guides thermal pad design in PCB layout.
What package type and pin configuration does BC847BWT1 use?
BC847BWT1 uses the SC-70 (SOT-323) package with three gull-wing leads. Pin 1 is Base, Pin 2 is Emitter, and Pin 3 is Collector - confirmed in the "Mechanical Case Outline" section (page 12) and marking diagram of the onsemi datasheet.
BC847BWT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
BC847BWT1 FAQ
1.How can I place an order for BC847BWT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BWT1 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 BC847BWT1 reliable?
The price and inventory of BC847BWT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BWT1 is usually 5 days.
3.What payment methods are accepted for BC847BWT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BWT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BWT1?
BC847BWT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BWT1 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 BC847BWT1?
For technical support, including BC847BWT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BWT1 requirements.
6.How does Aetrix verify that BC847BWT1 is sourced from the original manufacturer or authorized distributors?
All BC847BWT1 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 BC847BWT1 meets industry standards.
7.What is the process for return or replacement of BC847BWT1?
All BC847BWT1 units undergo pre-shipment inspection (PSI). If there is an issue with BC847BWT1, 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 BC847BWT1 part is unused and in its original packaging.
Return procedure for BC847BWT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BWT1 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
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
