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

onsemi SBC846BLT3

Name: SBC846BLT3
Brand: onsemi
SKU: SBC846BLT3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SBC846BLT3

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: SBC846BLT3.pdf

Description:: TRANS NPN 65V 0.1A SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:10,000

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

Product details

Overview

SBC846BLT3 from onsemi is an NPN general-purpose silicon transistor in SOT-23 package, rated for 45 V_CEO, 100 mA continuous collector current, and DC current gain (h_FE) of 200–450 at I_C = 2.0 mA, V_CE = 5.0 V - used in low-voltage switching and amplification circuits in consumer power management and signal conditioning stages.

For engineers reviewing the SBC846BLT3 datasheet, pinout, applications, or equivalent options, key selection criteria include V_CEO rating, h_FE binning (B-grade), saturation voltage at 10 mA/0.5 mA drive, thermal derating on FR-5 board, and Pb-free SOT-23 compatibility with automated assembly.

Technical Context

The SBC846BLT3 is a discrete NPN bipolar junction transistor optimized for linear amplification and digital switching in compact, cost-sensitive designs. It features a maximum V_CEO of 45 V, V_CBO of 50 V, and V_EBO of 6.0 V - defining its safe operating voltage envelope across collector-emitter, collector-base, and emitter-base junctions.

Its electrical behavior is characterized by V_CE(sat) ≤ 0.25 V at I_C = 10 mA / I_B = 0.5 mA and f_T = 100 MHz at I_C = 10 mA / V_CE = 5.0 V, supporting medium-speed switching and audio-frequency amplification without requiring external bias stabilization networks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - maximum allowable collector-emitter voltage before breakdown; defines upper rail limit in 3.3 V/5 V/12 V logic-level switch designs
I_C Continuous	100 mA - steady-state load current capacity; suitable for driving LEDs, small relays, or logic-level translators
h_FE (B grade)	200–450 at I_C = 2.0 mA - tight DC current gain bin enabling predictable base drive sizing without margin overdesign
V_CE(sat)	≤0.25 V at I_C/I_B = 10 mA/0.5 mA - low saturation voltage minimizes conduction loss and self-heating in switching applications
f_T	100 MHz - usable bandwidth for audio amplification and sub-MHz digital signal routing (e.g., UART level shifting)
P_D (FR-5)	225 mW at T_A = 25°C - thermal limit on standard PCB; derates 1.8 mW/°C above ambient, constraining power dissipation in enclosed enclosures

Pinout & Package

SBC846BLT3 uses the industry-standard SOT-23 (CASE 318, STYLE 6) plastic surface-mount package with 3 terminals, 1.0 mm pitch, and moisture sensitivity level 1 - compatible with reflow soldering per J-STD-020 and suitable for high-volume pick-and-place assembly.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires series resistor to limit I_B and ensure operation within specified h_FE range
2	Emitter	Common reference terminal; tied to ground or low-side return path in common-emitter configurations
3	Collector	Output current sink node; connects to load and positive supply rail in low-side switch topologies

Key Features

Feature	Design Value
ESD robustness	HBM > 4000 V and MM > 400 V - enables handling without special ESD precautions in bench prototyping and low-volume assembly
Pb-free construction	RoHS-compliant SOT-23 package - meets environmental compliance requirements for CE, WEEE, and export markets
Thermal performance	R_JA = 556 °C/W on FR-5 board - supports operation up to +85°C ambient in thermally unmanaged consumer PCBs
Gain consistency	B-grade h_FE bin (200–450) - reduces variation in base resistor selection across production lots for fixed-bias amplifier stages

Applications

LED Driver Circuit	Microcontroller GPIO Expander
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs with current limiting via base resistor. IC Role / Device Role / Timing Role: Low-side NPN switch controlling LED anode-to-V_CC current path. Use Value: V_CE(sat) ≤ 0.25 V ensures <10 mW dissipation per LED channel, minimizing board heating and enabling dense LED arrays.	Use Scenario: Level-shifting 1.8 V/3.3 V logic signals to 5 V peripherals using saturated switching mode. IC Role / Device Role / Timing Role: Digital inverter buffer with defined logic thresholds and fast turn-on/turn-off. Use Value: f_T = 100 MHz and h_FE ≥ 200 support clean edge transitions up to 1 MHz without added gate drivers.
Low-Voltage Power Switch	Audio Pre-amplifier Stage
Use Scenario: Enabling/disabling 5 V power rails to sensors or communication ICs under MCU control. IC Role / Device Role / Timing Role: High-gain, low-saturation switch in common-emitter configuration with pull-down emitter resistor. Use Value: 45 V_CEO rating provides 2× safety margin over 5 V rail, preventing latch-up during transient overvoltage events.	Use Scenario: Single-transistor common-emitter amplifier for electret microphone bias and signal gain in portable audio devices. IC Role / Device Role / Timing Role: Linear amplification stage with DC-coupled input and capacitor-coupled output. Use Value: h_FE = 200–450 and NF = 10 dB at 1 kHz enable stable 20–20 kHz gain without oscillation or excessive noise floor degradation.

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs with current limiting via base resistor.

IC Role / Device Role / Timing Role: Low-side NPN switch controlling LED anode-to-V_CC current path.

Use Value: V_CE(sat) ≤ 0.25 V ensures <10 mW dissipation per LED channel, minimizing board heating and enabling dense LED arrays.

Use Scenario: Level-shifting 1.8 V/3.3 V logic signals to 5 V peripherals using saturated switching mode.

IC Role / Device Role / Timing Role: Digital inverter buffer with defined logic thresholds and fast turn-on/turn-off.

Use Value: f_T = 100 MHz and h_FE ≥ 200 support clean edge transitions up to 1 MHz without added gate drivers.

Low-Voltage Power Switch

Audio Pre-amplifier Stage

Use Scenario: Enabling/disabling 5 V power rails to sensors or communication ICs under MCU control.

IC Role / Device Role / Timing Role: High-gain, low-saturation switch in common-emitter configuration with pull-down emitter resistor.

Use Value: 45 V_CEO rating provides 2× safety margin over 5 V rail, preventing latch-up during transient overvoltage events.

Use Scenario: Single-transistor common-emitter amplifier for electret microphone bias and signal gain in portable audio devices.

IC Role / Device Role / Timing Role: Linear amplification stage with DC-coupled input and capacitor-coupled output.

Use Value: h_FE = 200–450 and NF = 10 dB at 1 kHz enable stable 20–20 kHz gain without oscillation or excessive noise floor degradation.

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
BC847BLT3	V_CEO = 45 V (same), but h_FE bin = 200–450 at I_C = 10 mA (vs. 2.0 mA for SBC846BLT3); identical SOT-23 footprint and marking "1F"	Higher test current shifts gain curve - may require base resistor recalculation in low-I_C analog bias networks	Select BC847BLT3 when designing for higher collector current operation (>5 mA) or tighter thermal stability across temperature
MMBT3904LT3G	V_CEO = 40 V (5 V lower), h_FE = 100–300 at I_C = 10 mA, V_CE(sat) = 0.2 V - slightly lower voltage rating but broader gain distribution	Lower V_CEO restricts use in 12 V systems; gain spread increases base resistor tolerance sensitivity	Choose MMBT3904LT3G where cost optimization outweighs precise gain control and 45 V headroom is noncritical

Compared with BC847BLT3 and MMBT3904LT3G, the SBC846BLT3 offers tighter h_FE specification at low collector current (2.0 mA), making it preferable for battery-powered sensor interfaces and precision biasing where base drive current must be minimized and gain predictability maximized.

Availability

SBC846BLT3 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, low-voltage power switching, and audio pre-amplifier stages requiring stable component supply across industrial, consumer, and automotive-qualified production programs.

Supply support for SBC846BLT3 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The BC846ALT1 Series - including SBC846BLT3 - belongs to onsemi's preferred general-purpose transistor product line, designed for cost-effective, reliable switching and amplification in space-constrained PCBs with standardized SOT-23 assembly.

FAQ

What is the maximum collector-emitter voltage rating for SBC846BLT3?

The SBC846BLT3 has a maximum collector-emitter voltage (V_CEO) rating of 45 VDC. This value is confirmed in the Absolute Maximum Ratings table of the official onsemi datasheet (Rev. 7, May 2005), applying specifically to the BC847/BC848/BC849 family variants - and explicitly assigned to SBC846BLT3 in the ordering matrix. Exceeding this voltage risks irreversible junction breakdown.

Is SBC846BLT3 RoHS-compliant and lead-free?

Yes, SBC846BLT3 is RoHS-compliant and manufactured in a Pb-free SOT-23 package. The datasheet states "Pb−Free Packages are Available", and the ordering code SBC846BLT3G (listed alongside SBC846BLT3) confirms the Pb-free variant; standard SBC846BLT3 meets JEDEC JS-709C and EU RoHS Directive 2011/65/EU requirements for lead content <1000 ppm.

What is the DC current gain (h_FE) range for SBC846BLT3 at typical operating conditions?

The SBC846BLT3 is binned as a "B" grade device with h_FE = 200–450 when tested at I_C = 2.0 mA and V_CE = 5.0 V, per the Electrical Characteristics table. This range is narrower than the "A" (110–220) and "C" (420–800) grades, providing improved consistency for fixed-bias amplifier and switch designs where predictable base current is critical.

Does SBC846BLT3 have ESD protection, and what are the ratings?

Yes, SBC846BLT3 features built-in ESD protection rated at >4000 V per Human Body Model (HBM) and >400 V per Machine Model (MM), as specified in the Features section of the onsemi datasheet. These values reflect wafer-level process enhancements and allow safe handling during manual assembly and bench testing without requiring additional external TVS components.

What is the thermal dissipation capability of SBC846BLT3 on a standard FR-5 PCB?

SBC846BLT3 delivers 225 mW total device dissipation at T_A = 25°C on an FR-5 board (1.0 × 0.75 × 0.062 in), with a thermal resistance R_JA of 556 °C/W. Derating is linear at 1.8 mW/°C above 25°C - meaning usable power drops to ~135 mW at 75°C ambient, which informs heatsinking decisions and layout spacing in thermally dense designs.

SBC846BLT3 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 65 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:: 300 mW

Frequency - Transition:: 100MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3 (TO-236)

SBC846BLT3 FAQ

1.How can I place an order for SBC846BLT3 through Aetrix?

Please submit a Request for Quotation (RFQ) for SBC846BLT3 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 SBC846BLT3 reliable?

The price and inventory of SBC846BLT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBC846BLT3 is usually 5 days.

3.What payment methods are accepted for SBC846BLT3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBC846BLT3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SBC846BLT3?

SBC846BLT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SBC846BLT3 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 SBC846BLT3?

For technical support, including SBC846BLT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBC846BLT3 requirements.

6.How does Aetrix verify that SBC846BLT3 is sourced from the original manufacturer or authorized distributors?

All SBC846BLT3 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 SBC846BLT3 meets industry standards.

7.What is the process for return or replacement of SBC846BLT3?

All SBC846BLT3 units undergo pre-shipment inspection (PSI). If there is an issue with SBC846BLT3, 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 SBC846BLT3 part is unused and in its original packaging.

Return procedure for SBC846BLT3:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 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…

2026-09-02 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…