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

Nexperia USA Inc. BC847B/SNVL

Name: BC847B/SNVL
Brand: Nexperia USA Inc.
SKU: BC847B/SNVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847B/SNVL

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BC847B/SNVL.pdf

Description:: TRANS NPN 45V 0.1A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:5,776

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Product details

Overview

BC847B/SNVL from Nexperia is an NPN general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 200–450 at V_CE = 5 V and I_C = 2 mA. It serves as a low-voltage switching or small-signal amplification device in discrete logic interfaces, LED drivers, and sensor biasing circuits.

For engineers reviewing the BC847B/SNVL datasheet, BC847B/SNVL pinout, BC847B/SNVL application, or BC847B/SNVL equivalent, key selection criteria include its guaranteed h_FE range, SOT23 thermal resistance (500 K/W), V_CE(sat) ≤ 400 mV at I_C = 100 mA / I_B = 5 mA, and compatibility with standard reflow soldering footprints.

Technical Context

The BC847B/SNVL operates as a silicon planar epitaxial NPN transistor with open-base collector-emitter breakdown voltage of 45 V and emitter-base breakdown voltage of 6 V. Its h_FE binning (200–450) enables predictable current amplification in linear and saturated switching modes across −55 °C to +150 °C ambient range.

Thermal performance is defined for FR4 PCB mounting with single-sided copper: R_th(j-a) = 500 K/W, P_tot = 250 mW at T_amb ≤ 25 °C. Saturation behavior is characterized at two drive conditions - IC/IB = 20 and IC/IB = 10 - supporting both high-efficiency switching and analog bias stability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs.
I_C	100 mA continuous - Absolute max DC collector current; usable up to ~80 mA in sustained operation on standard FR4.
h_FE	200–450 at V_CE = 5 V, I_C = 2 mA - Tight gain bin ensures consistent base drive calculation for switching thresholds.
V_CE(sat)	≤ 400 mV at I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes power loss and heating in digital on/off control.
P_tot	250 mW at T_amb ≤ 25 °C - Power dissipation limit on standard PCB; derates linearly above 25 °C ambient.
R_th(j-a)	500 K/W - Junction-to-ambient thermal resistance determines temperature rise per watt on typical layout.

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads, 1.9 mm × 1.1 mm footprint, 0.45 mm nominal lead pitch, and 0.9 mm height. Designed for automated placement and reflow/wave soldering per IPC-7351B.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B and ensure saturation or linear operation.
2	Emitter (E)	Common reference terminal; connected to ground or low-side return path in most switching configurations.
3	Collector (C)	Output current terminal; sinks load current when B-E forward biased; connects to V_CC via load in common-emitter topology.

Key Features

Feature	Design Value
Three h_FE bins (A/B/C)	Enables precise base resistor selection: BC847B's 200–450 range avoids overdesign or insufficient drive.
Low V_CE(sat)	400 mV max at full 100 mA load supports efficient battery-powered switching without excessive heat buildup.
FR4-optimized thermal rating	250 mW P_tot with 500 K/W R_th(j-a) allows direct thermal modeling on standard PCBs without heatsinking.
SOT23 footprint compatibility	Matches JEDEC TO-236AB standard; interoperable with existing pick-and-place tooling and reflow profiles.

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V microcontroller outputs.

IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, sinking LED current to ground.

Use Value: Guaranteed h_FE ≥ 200 ensures full saturation with ≤ 100 µA base drive, preserving MCU output integrity.

Use Scenario: Level-shifting and current boosting for legacy 5 V peripherals controlled by 3.3 V MCUs.

IC Role / Device Role / Timing Role: Digital interface translator providing current gain and voltage margin between logic families.

Use Value: V_CEO = 45 V and V_EBO = 6 V tolerate transient overshoot and allow safe operation across mixed-rail systems.

Sensor Bias Network

Discrete Logic Inverter

Use Scenario: Providing stable bias current to phototransistors, thermistors, or analog sensor front-ends.

IC Role / Device Role / Timing Role: Active current source/sink in emitter-follower or common-collector configuration.

Use Value: h_FE consistency and low noise figure (2–10 dB) support accurate analog signal conditioning without added drift.

Use Scenario: Constructing non-inverting or inverting logic gates in repair, prototyping, or ultra-low-cost designs.

IC Role / Device Role / Timing Role: Discrete transistor implementing Schmitt-trigger or buffered gate functionality.

Use Value: Fast transition frequency (f_T ≥ 100 MHz) and low C_c (≤ 1.5 pF) enable reliable operation up to ~10 MHz switching.

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/SNVL	Same electrical specs; SOT323 (SC-70) package - 2.1 mm × 1.25 mm, smaller footprint, higher thermal resistance (625 K/W).	Preferred where board space is constrained but thermal margin permits lower power density.	Select BC847BW/SNVL only if layout area savings outweigh reduced power handling and thermal performance.
MMBT3904LT1G	Higher V_CEO (40 V), wider h_FE range (100–300), same SOT23 package; not binned to B-grade precision.	Acceptable where gain tolerance > ±30% is acceptable and 40 V rail suffices.	Choose MMBT3904LT1G for cost-sensitive volume production where tighter h_FE control is unnecessary.

Compared with BC847B/SNVL, BC847BW/SNVL trades thermal capability for miniaturization, while MMBT3904LT1G offers broader availability but looser h_FE control - making BC847B/SNVL optimal for designs requiring predictable saturation and stable bias points.

Availability

BC847B/SNVL is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface expansion, sensor bias networks, and discrete logic inverters requiring stable component supply and consistent gain performance.

Supply support for BC847B/SNVL 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive, industrial, and consumer power management and signal integrity solutions.

The BC847x series targets cost-sensitive, space-constrained applications needing robust, standardized NPN transistors with binned gain - designed specifically for manufacturable, repeatable discrete circuit implementation in mass-produced electronics.

FAQ

Is BC847B/SNVL automotive-qualified?

No. BC847B/SNVL is not automotive-qualified. Nexperia explicitly states in the revision history that this part is non-automotive qualified and recommends using designated -Q variants (e.g., BC847B-Q) for automotive applications. Its qualification excludes AEC-Q101 stress testing and automotive-specific reliability screening.

What is the marking code for BC847B/SNVL?

The marking code for BC847B/SNVL is "1F%", where "%" is a placeholder for the manufacturing site code. This laser-marked identifier appears on the top surface of the SOT23 package and is used for traceability and bin verification during assembly and inspection.

Can BC847B/SNVL replace BC847C in a circuit?

Only if the design tolerates lower h_FE. BC847C has h_FE = 420–800, while BC847B is 200–450. Substituting B for C may cause marginal saturation or reduced gain margin - especially at low I_C (< 1 mA) or elevated temperature. Verify base drive and V_CE(sat) under worst-case conditions before substitution.

What is the maximum allowable pulsed collector current?

The peak collector current (I_CM) is 200 mA for single pulses ≤ 1 ms. This value assumes duty cycle ≤ 2% and is limited by bond wire and junction thermal inertia. Exceeding 200 mA or extending pulse width beyond 1 ms risks irreversible damage even with low average power.

BC847B/SNVL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

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

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 5mA, 100mA

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

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

Power - Max:: 250 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BC847B/SNVL FAQ

1.How can I place an order for BC847B/SNVL through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847B/SNVL 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 BC847B/SNVL reliable?

The price and inventory of BC847B/SNVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847B/SNVL is usually 5 days.

3.What payment methods are accepted for BC847B/SNVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847B/SNVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847B/SNVL?

BC847B/SNVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847B/SNVL 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 BC847B/SNVL?

For technical support, including BC847B/SNVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847B/SNVL requirements.

6.How does Aetrix verify that BC847B/SNVL is sourced from the original manufacturer or authorized distributors?

All BC847B/SNVL 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 BC847B/SNVL meets industry standards.

7.What is the process for return or replacement of BC847B/SNVL?

All BC847B/SNVL units undergo pre-shipment inspection (PSI). If there is an issue with BC847B/SNVL, 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 BC847B/SNVL part is unused and in its original packaging.

Return procedure for BC847B/SNVL:

1.Submit a request within 90 days.

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

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