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

Nexperia USA Inc. BC846BW/ZLX

Name: BC846BW/ZLX
Brand: Nexperia USA Inc.
SKU: BC846BW/ZLX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC846BW/ZLX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: BC846BW/ZLX.pdf

Description:: TRANS NPN 65V 0.1A 6TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,042

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Product details

Overview

BC846BW/ZLX from Nexperia is a 65 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and linear amplification in space-constrained PCBs. It delivers h_FE = 200–450 at V_CE = 5 V / I_C = 2 mA, V_CE(sat) ≤ 400 mV at I_C = 100 mA / I_B = 5 mA, and f_T = 100 MHz - enabling reliable signal conditioning in portable sensor interfaces and LED driver bias stages.

For engineers reviewing the BC846BW/ZLX datasheet, BC846BW/ZLX pinout, BC846BW/ZLX application, or BC846BW/ZLX equivalent, key selection criteria include DC current gain grouping (Group B), thermal resistance (R_th(j-a) = 625 K/W on FR4), and SC-70 footprint compatibility with high-density routing and reflow soldering profiles.

Technical Context

This NPN bipolar junction transistor operates as a discrete active switch or small-signal amplifier with fixed emitter-base and collector-base junction structures. Its design supports continuous DC operation up to T_j = 150 °C and pulsed peak currents of 200 mA, constrained by absolute maximum ratings including V_CEO = 65 V and P_tot = 200 mW at T_amb ≤ 25 °C.

The BC846BW variant belongs to the Group B h_FE selection (200–450), distinguishing it from BC846AW (110–220) and BC846W (110–450). Its base-emitter voltage is specified at 580–700 mV (I_C = 2 mA, V_CE = 5 V), and saturation behavior is characterized across temperature (−55 °C to +150 °C) with defined V_CE(sat) and V_BE(sat) curves.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	65 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in low-voltage switching circuits.
I_C	100 mA continuous - Rated collector current for sustained DC operation without thermal runaway on standard FR4 PCB.
h_FE	200–450 at V_CE = 5 V, I_C = 2 mA - High-gain Group B selection enables low-base-drive designs in amplifier and feedback networks.
V_CE(sat)	≤ 400 mV at I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes conduction loss in digital logic-level switching applications.
f_T	100 MHz - Transition frequency confirms suitability for audio-frequency amplification and low-speed digital signal buffering.
R_th(j-a)	625 K/W - Thermal resistance indicates ~125 °C junction rise at full 200 mW dissipation on standard FR4; requires layout-aware copper pour.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 1.3 mm × 1.8 mm × 0.95 mm body, 0.65 mm lead pitch, tin-plated terminations compatible with IPC-J-STD-020 reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B and ensure stable h_FE-dependent gain.
2	Emitter (E)	Reference terminal for bias network; connected to ground or common return path in common-emitter configurations.
3	Collector (C)	Output node carrying switched or amplified current; routed to load (e.g., LED anode, relay coil, or next-stage input).

Key Features

Feature	Design Value
Group B h_FE binning	200–450 at 2 mA/5 V - Enables predictable gain matching in multi-channel analog front-ends without post-production trimming.
Low V_CE(sat)	≤ 400 mV at 100 mA - Reduces power loss in battery-powered load switches, extending runtime in portable instrumentation.
SC-70 footprint	1.3 × 1.8 mm outline - Supports >2× higher component density than SOT23 in compact IoT sensor nodes and wearables.
150 °C max junction temp	Rated for continuous operation up to T_j = 150 °C - Allows deployment in thermally aggressive environments like enclosed industrial controllers.

Applications

Portable Sensor Signal Conditioning

LED Bias Control in Wearables

Use Scenario: Amplifying microvolt-level output from MEMS accelerometers before ADC sampling in ultra-low-power fitness trackers.

IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with emitter degeneration for linearity and bandwidth control.

Use Value: 100 MHz f_T and 200–450 h_FE support stable 20 kHz bandwidth amplification with <1% THD at 1 V_PP output swing.

Use Scenario: Driving red/green/blue LEDs in smartwatch displays where forward current must be tightly regulated below 20 mA per segment.

IC Role / Device Role / Timing Role: Constant-current switch with base resistor setting I_C ≈ β·I_B, operating in active region for precise brightness control.

Use Value: Tight h_FE binning (200–450) ensures ±8% current variation across production units without closed-loop feedback.

Industrial Digital Input Interface

Low-Voltage Logic-Level Translation

Use Scenario: Isolating and conditioning 24 V PLC field inputs into 3.3 V microcontroller GPIO pins using optocoupler-compatible drive capability.

IC Role / Device Role / Timing Role: Voltage-level translator and current buffer, sinking up to 100 mA while maintaining logic-compatible output swing.

Use Value: V_CEO = 65 V and I_C = 100 mA allow direct interfacing with industrial 24 V/48 V rails without external Zener clamping.

Use Scenario: Converting 5 V TTL signals to 1.8 V/2.5 V I/O domains in mixed-voltage FPGA or SoC subsystems.

IC Role / Device Role / Timing Role: Active pull-down stage with fast turn-off (driven by base discharge path) and minimal propagation delay.

Use Value: V_CE(sat) ≤ 400 mV at 10 mA ensures output low-state remains <0.4 V, satisfying VIH/VIL thresholds of sub-2 V logic families.

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	Same SOT323 package; h_FE = 200–450 (identical bin), but V_CEO = 45 V and I_C = 100 mA - lower voltage rating.	Not suitable for 65 V rail applications; limited to ≤45 V systems such as USB-powered peripherals or automotive infotainment modules.	Select only when system V_CC ≤ 45 V and legacy BC847 footprint reuse is required.
MMBT3904LT1G	Same SOT23 package (larger than SOT323); h_FE = 100–300 at 10 mA; V_CEO = 40 V; R_th(j-a) = 300 K/W - better thermal performance but larger footprint.	Preferred where board space permits and higher power dissipation (>200 mW) is needed; not drop-in for SC-70 layouts.	Choose when thermal margin is critical and PCB real estate allows SOT23; avoid if SC-70 density or reflow profile constraints apply.

Compared with BC846BW/ZLX, BC847BW trades 20 V headroom for identical gain and package, while MMBT3904LT1G sacrifices miniaturization for improved thermal handling - making BC846BW/ZLX optimal for space-constrained 65 V switching where gain consistency is prioritized.

Availability

BC846BW/ZLX is available at Aetrix Electronics and suitable for portable sensor signal conditioning, LED bias control in wearables, and industrial digital input interface requiring stable component supply and consistent Group B h_FE performance.

Supply support for BC846BW/ZLX 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The BC846xW series targets cost-sensitive, space-constrained applications demanding robust general-purpose transistor performance with standardized SC-70 packaging and tight h_FE binning for predictable analog behavior.

FAQ

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 DC base current must be limited to maintain I_C ≤ 100 mA and T_j ≤ 150 °C. For I_C = 100 mA and minimum h_FE = 200, I_B should not exceed 500 µA - verified by V_CE(sat) test conditions in the datasheet.

Can BC846BW/ZLX replace BC846B in through-hole designs?

No - BC846BW/ZLX uses SOT323 (SC-70) surface-mount packaging, while BC846B is in TO-92 through-hole format. The pinouts differ (SOT323: B-E-C; TO-92: E-B-C), and thermal and mechanical mounting requirements are incompatible. A redesign of footprint and layout is required for migration.

Is this device suitable for automotive applications?

No - BC846BW/ZLX is not AEC-Q101 qualified and lacks automotive-specific testing or qualification. Nexperia explicitly states non-automotive status in its legal disclaimers; use in automotive systems requires formal qualification and carries no warranty or liability from the manufacturer.

How does ambient temperature affect h_FE performance?

h_FE increases with temperature: Fig. 2 shows typical h_FE rising ~30% from −55 °C to +150 °C at I_C = 10 mA. At 2 mA bias, h_FE shifts from ~180 at −55 °C to ~320 at +150 °C - requiring gain-stabilizing emitter resistors in precision amplifier designs.

BC846BW/ZLX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BC846xW

Package/Case:: 6-TSSOP, SC-88, SOT-363

Packaging:: Tape & Reel (TR)

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:: Surface Mount

Supplier Device Package:: 6-TSSOP

BC846BW/ZLX FAQ

1.How can I place an order for BC846BW/ZLX through Aetrix?

Please submit a Request for Quotation (RFQ) for BC846BW/ZLX 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 BC846BW/ZLX reliable?

The price and inventory of BC846BW/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BW/ZLX is usually 5 days.

3.What payment methods are accepted for BC846BW/ZLX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BW/ZLX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC846BW/ZLX?

BC846BW/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC846BW/ZLX 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 BC846BW/ZLX?

For technical support, including BC846BW/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BW/ZLX requirements.

6.How does Aetrix verify that BC846BW/ZLX is sourced from the original manufacturer or authorized distributors?

All BC846BW/ZLX 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 BC846BW/ZLX meets industry standards.

7.What is the process for return or replacement of BC846BW/ZLX?

All BC846BW/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with BC846BW/ZLX, 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 BC846BW/ZLX part is unused and in its original packaging.

Return procedure for BC846BW/ZLX:

1.Submit a request within 90 days.

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

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