Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Nexperia USA Inc. BC846AW,135

Name: BC846AW,135
Brand: Nexperia USA Inc.
SKU: BC846AW,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BC846AW,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC846AW,135.pdf

Description:: TRANS NPN 65V 0.1A SOT-323

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,083

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BC846AW,135 from Nexperia is an NPN general-purpose transistor in SOT323 (SC-70) package, rated for 65 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 110–220 at V_CE = 5 V, I_C = 2 mA. It serves as a low-power switching and amplification device in compact consumer, industrial, and communication signal paths.

For engineers reviewing the BC846AW,135 datasheet, BC846AW,135 pinout, BC846AW,135 application, or BC846AW,135 equivalent, this part is selected for space-constrained designs requiring stable small-signal gain, low saturation voltage (V_CEsat ≤ 400 mV @ I_C = 100 mA), and robust thermal performance on FR4 PCBs.

Technical Context

The BC846AW,135 operates as a silicon NPN bipolar junction transistor with fixed gain binning (Group A: h_FE = 110–220), optimized for linear amplification and saturated switching in low-voltage, low-current circuits. Its base-emitter and collector-base junctions are rated to 6 V and 80 V respectively, supporting reliable operation under transient overvoltage conditions.

Thermal resistance R_th(j-a) is 625 K/W on standard FR4 (single-sided, 35 µm Cu), enabling continuous operation up to 150 °C junction temperature. The device exhibits f_T ≥ 100 MHz and low capacitance (C_c = 2–3 pF, C_e ≈ 11 pF), making it suitable for audio-frequency and low-speed digital switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	65 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in switching applications.
I_C	100 mA - Continuous DC collector current rating; sets maximum load drive capability in active mode.
h_FE	110–220 - DC current gain at V_CE = 5 V, I_C = 2 mA; determines required base drive for target collector current.
V_CEsat	≤ 400 mV @ I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes power loss and heating in switch-mode operation.
f_T	≥ 100 MHz - Transition frequency confirms usable bandwidth for audio and low-speed digital signal amplification.
R_th(j-a)	625 K/W - Junction-to-ambient thermal resistance on standard FR4; informs heatsinking requirements for sustained operation.
C_c	2–3 pF - Collector-base capacitance at V_CB = 10 V; impacts high-frequency response and noise coupling in amplifier stages.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, 3-terminal leadframe with gull-wing leads. Optimized for reflow soldering per IPC-J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control terminal; requires current-limited drive (I_B ≤ 5 mA typical) to bias transistor into active/saturation region.
2	Emitter (E)	Current sink node; connected to ground or low-side return path; polarity defines NPN topology.
3	Collector (C)	Output/load connection; carries full I_C current; must be referenced to higher potential than emitter.

Key Features

Feature	Design Value
Gain-binned h_FE	110–220 (Group A) - Tighter gain distribution simplifies base resistor selection and improves circuit predictability across production lots.
Low V_CEsat	≤ 400 mV @ I_C/I_B = 20 - Reduces conduction loss and self-heating in battery-powered or thermally constrained systems.
Small-outline packaging	SOT323 (SC-70) - Enables high-density PCB layouts in wearables, IoT sensors, and portable electronics where board space is critical.
High f_T	≥ 100 MHz - Supports stable amplification up to mid-audio frequencies without phase inversion or gain roll-off.
Robust thermal rating	T_j max = 150 °C - Allows operation in industrial ambient environments (−65 °C to +150 °C storage) without derating.

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving discrete LEDs from 3.3 V or 5 V microcontroller outputs with current limiting.

IC Role / Device Role / Timing Role: Low-side switch controlling LED anode-to-V_CC path; operated in saturation for minimal voltage drop.

Use Value: V_CEsat ≤ 400 mV ensures >90% efficiency in LED forward voltage utilization; h_FE binning guarantees consistent brightness across units.

Use Scenario: Extending limited MCU GPIO count to control multiple peripheral enable lines or reset signals.

IC Role / Device Role / Timing Role: Digital buffer/inverter stage translating logic-level signals to higher-current drive capability.

Use Value: Fast turn-on/turn-off (enabled by f_T ≥ 100 MHz) supports clean edge transitions; low input capacitance avoids loading MCU pins.

Audio Pre-amplifier Stage

Power Supply Enable Switch

Use Scenario: Boosting weak microphone or sensor signals before ADC sampling in portable audio devices.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration for linearity and stability.

Use Value: h_FE = 110–220 enables predictable gain setting; low NF (2–10 dB) preserves signal-to-noise ratio in analog front-end.

Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V LDO output) based on system state or fault condition.

IC Role / Device Role / Timing Role: High-side or low-side pass element controlled by supervisor IC or FPGA logic.

Use Value: 65 V V_CEO margin accommodates supply transients; 100 mA I_C rating covers typical enable-load currents (e.g., PMIC sequencing).

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
BC847AW,135	Same SOT323 package; h_FE = 200–450 (Group B); V_CEO = 45 V	Higher gain but lower breakdown voltage; less suitable for 50+ V rail switching	Select when tighter gain control is needed and supply voltage ≤ 45 V.
MMBT3904LT1G	Same SOT23 package; h_FE = 100–300; V_CEO = 40 V; R_th(j-a) = 405 K/W	Larger footprint; lower voltage rating; better thermal dissipation on same PCB	Choose when thermal margin is critical and board area allows SOT23.

Compared with BC846AW,135, BC847AW,135 offers higher gain but reduced voltage headroom, while MMBT3904LT1G trades smaller size for improved thermal performance and lower V_CEO; all require recalculation of base resistors and layout adaptation.

Availability

BC846AW,135 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface expansion, audio pre-amplifiers, and power rail enable switching requiring stable component supply and consistent gain binning.

Supply support for BC846AW,135 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade reliability.

The BC846xW series targets cost-sensitive, space-constrained applications in consumer electronics and industrial controls where consistent small-signal gain, low saturation voltage, and SOT323 scalability are essential.

FAQ

Is BC846AW,135 pin-compatible with BC846W or BC846BW?

Yes - all BC846xW variants share identical SOT323 pinout (1 = Base, 2 = Emitter, 3 = Collector) and mechanical footprint. Gain binning (A/B/W) affects only h_FE range, not pin assignment or package dimensions.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is 200 mA (single pulse, t_p ≤ 1 ms), but continuous I_B should be limited to ≤ 5 mA to maintain V_CEsat ≤ 400 mV and avoid thermal runaway; design practice uses I_B = I_C/10 to 20 for saturation.

Can BC846AW,135 replace BC546B in through-hole designs?

No - BC546B uses TO-92 package with different pinout (E-C-B) and thermal profile. While electrical specs overlap, direct replacement requires PCB redesign, soldering process change (SMT vs. THT), and validation of thermal performance on FR4.

Does BC846AW,135 meet automotive qualification standards?

No - BC846AW,135 is not AEC-Q200 qualified. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive applications requires formal qualification testing and carries full customer liability per datasheet terms.

BC846AW,135 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BC846xW

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 65 V

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

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 110 @ 2mA, 5V

Power - Max:: 200 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BC846AW,135 FAQ

1.How can I place an order for BC846AW,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC846AW,135 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 BC846AW,135 reliable?

The price and inventory of BC846AW,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AW,135 is usually 5 days.

3.What payment methods are accepted for BC846AW,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AW,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC846AW,135?

BC846AW,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC846AW,135 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 BC846AW,135?

For technical support, including BC846AW,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AW,135 requirements.

6.How does Aetrix verify that BC846AW,135 is sourced from the original manufacturer or authorized distributors?

All BC846AW,135 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 BC846AW,135 meets industry standards.

7.What is the process for return or replacement of BC846AW,135?

All BC846AW,135 units undergo pre-shipment inspection (PSI). If there is an issue with BC846AW,135, 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 BC846AW,135 part is unused and in its original packaging.

Return procedure for BC846AW,135:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…