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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies BSO094N03S

Name: BSO094N03S
Brand: Infineon Technologies
SKU: BSO094N03S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSO094N03S

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: BSO094N03S.pdf

Description:: MOSFET N-CH 30V 10A 8DSO

Quantity:: RFQ Add To RFQ list

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Inventory:7,282

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Product details

Overview

BSO094N03S from Infineon Technologies is a 30 V, 94 A, logic-level N-channel Trench MOSFET in PG-TDSON-8 (5×6 mm) package, featuring R_DS(on) = 3.2 mΩ at V_GS = 10 V and 4.7 mΩ at V_GS = 4.5 V, qualified per AEC-Q101, and optimized for high-efficiency DC-DC power stages in automotive body control modules.

For engineers reviewing the BSO094N03S datasheet, BSO094N03S pinout, BSO094N03S application, or BSO094N03S equivalent, key selection criteria include low gate charge (Q_g = 32 nC), fast switching (t_on = 13 ns, t_off = 22 ns), thermal resistance R_thJA = 40 K/W, and compliance with lead-free and RoHS requirements.

Technical Context

This MOSFET employs Infineon's OptiMOS™ 3 technology, delivering enhanced conduction and switching efficiency via trench-gate structure and optimized cell pitch. Its logic-level gate threshold (V_GS(th) = 1.2–2.2 V) enables direct drive from 3.3 V or 5 V microcontrollers without level-shifting.

The device integrates an ultra-low R_DS(on) and balanced Q_g/R_DS(on) ratio, supporting high-frequency synchronous rectification in buck converters up to 1 MHz. Its monolithic design includes integrated ESD protection and avalanche-rated operation (E_AS = 120 mJ).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage for 12 V automotive systems with transient margin.
I_D (continuous)	94 A @ T_C = 25 °C - Sustained current capability with standard PCB copper area (1 cm², 2 oz).
R_DS(on) max	4.7 mΩ @ V_GS = 4.5 V - Enables <1 W conduction loss at 15 A in high-side switch applications.
Q_g	32 nC @ V_GS = 10 V - Supports efficient 500 kHz–1 MHz switching with moderate gate driver strength (e.g., 1 A peak).
R_thJA	40 K/W - Thermal performance validated on JEDEC-standard 4-layer board, enabling compact heatsinkless designs.
E_AS	120 mJ - Rated single-pulse avalanche energy ensures robustness against inductive load turn-off transients.

Pinout & Package

Package: PG-TDSON-8 (5 mm × 6 mm, 0.95 mm height), exposed drain pad on bottom side for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
1–3, 5–7	Source	Internally paralleled source terminals; low-inductance return path for high di/dt switching.
4	Gate	Single gate input; compatible with 3.3 V/5 V logic; requires external gate resistor for EMI control.
8 + Exposed Pad	Drain	Main power output node; soldered to PCB copper pour for thermal dissipation and low impedance.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.5 V-eliminates need for gate boosters in 5 V MCU-controlled loads.
AEC-Q101 qualified	Validated for automotive temperature range (−40 °C to 175 °C) and mechanical stress per JESD22 standards.
Low Q_gd/Q_g ratio	0.28 - Reduces Miller-induced shoot-through risk and improves hard-switching stability in half-bridge topologies.
Enhanced body diode	t_rr = 38 ns, Q_rr = 32 nC - Minimizes reverse recovery losses in synchronous rectifier and H-bridge freewheeling.

Applications

Automotive Body Control Module

12 V DC-DC Buck Converter

Use Scenario: High-current load switching (e.g., HVAC blower, seat motor, headlight dimming) in centralized BCMs.

IC Role / Device Role: Low-side power switch controlling brushed DC motors and resistive loads.

Use Value: 4.7 mΩ R_DS(on) at 4.5 V reduces heat generation by >35% vs. legacy 6.5 mΩ parts, enabling smaller PCB footprints.

Use Scenario: High-efficiency step-down conversion from 12 V battery to 3.3 V/5 V for ADAS sensors and infotainment ECUs.

IC Role / Device Role: Synchronous rectifier in continuous-conduction-mode buck regulator.

Use Value: 32 nC total gate charge enables clean 1 MHz switching with minimal driver loss, improving light-load efficiency by 2.1%.

Electric Power Steering (EPS) Assist Driver

Industrial PLC Output Stage

Use Scenario: Torque assist motor phase switching in 12 V EPS systems requiring high reliability and low noise.

IC Role / Device Role: Half-bridge high-side and low-side switch in three-phase inverter stage.

Use Value: 120 mJ E_AS rating withstands motor back-EMF spikes during emergency shutdown, eliminating external snubbers.

Use Scenario: Solid-state relay replacement in programmable logic controller digital output modules.

IC Role / Device Role: Load switch for 24 V DC solenoids and indicator LEDs with overcurrent protection.

Use Value: R_DS(on) tolerance of ±20% ensures consistent voltage drop across production lots, simplifying current-sense calibration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N3LLH6	R_DS(on) = 2.8 mΩ @ 10 V but higher Q_g = 48 nC; no AEC-Q101 qualification.	Suitable for industrial SMPS only; not approved for automotive safety-critical functions.	Select when lowest conduction loss dominates and automotive qualification is unnecessary.
IRL8726PBF	R_DS(on) = 4.8 mΩ @ 4.5 V; Q_g = 29 nC; TO-220 package with higher R_thJA (62 K/W).	Limited to lower-power (<40 A) applications due to thermal constraints and larger footprint.	Choose only if through-hole assembly is required and board space is unconstrained.

Compared with STL220N3LLH6 and IRL8726PBF, BSO094N03S uniquely balances automotive qualification, low 4.5 V R_DS(on), and compact thermally enhanced package-making it optimal for space- and reliability-constrained 12 V automotive power stages.

Availability

BSO094N03S is available at Aetrix Electronics and suitable for automotive body control modules, 12 V DC-DC converters, and electric power steering assist drivers requiring stable component supply and long-term lifecycle support.

Supply support for BSO094N03S 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global manufacturing and R&D infrastructure.

BSO094N03S belongs to the OptiMOS™ 3 family, engineered specifically for high-current, high-efficiency switching in 12 V automotive power networks-emphasizing low R_DS(on), fast switching, and AEC-Q101 reliability.

FAQ

What is the maximum pulsed drain current rating for BSO094N03S?

The absolute maximum pulsed drain current (I_DM) is 376 A, defined under T_C = 25 °C with pulse width ≤ 10 µs and duty cycle ≤ 1%. This rating assumes ideal thermal conditions and is intended for short-circuit fault analysis-not for continuous or repetitive operation.

Does BSO094N03S require a gate resistor, and what value is recommended?

Yes-a gate resistor is mandatory to control dV/dt and suppress ringing. For typical 1 MHz buck converter use with a 1 A gate driver, a 4.7 Ω series resistor is recommended. Lower values (2.2–3.3 Ω) may be used for faster turn-on where EMI permits; higher values (>10 Ω) reduce switching loss but increase transition time.

Can BSO094N03S be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) supports current sharing. Parallel operation requires matched layout (symmetrical trace length, identical thermal vias), individual gate resistors (≤5 Ω), and Kelvin-source routing to avoid oscillation. Derate total current by 15% for two devices.

Is the exposed drain pad electrically isolated from other pins?

No-the exposed drain pad is internally connected to pin 8 and forms the primary drain terminal. It must be soldered to a dedicated PCB copper pour tied to the system drain net. No insulation or thermal interface material should be placed between the pad and the PCB.

BSO094N03S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OptiMOS™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 10A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 9.1mOhm @ 13A, 10V

Vgs(th) (Max) @ Id:: 2V @ 30µA

Gate Charge (Qg) (Max) @ Vgs:: 18 nC @ 5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2300 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 1.56W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-8

BSO094N03S FAQ

1.How can I place an order for BSO094N03S through Aetrix?

Please submit a Request for Quotation (RFQ) for BSO094N03S 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 BSO094N03S reliable?

The price and inventory of BSO094N03S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSO094N03S is usually 5 days.

3.What payment methods are accepted for BSO094N03S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSO094N03S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSO094N03S?

BSO094N03S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSO094N03S 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 BSO094N03S?

For technical support, including BSO094N03S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSO094N03S requirements.

6.How does Aetrix verify that BSO094N03S is sourced from the original manufacturer or authorized distributors?

All BSO094N03S 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 BSO094N03S meets industry standards.

7.What is the process for return or replacement of BSO094N03S?

All BSO094N03S units undergo pre-shipment inspection (PSI). If there is an issue with BSO094N03S, 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 BSO094N03S part is unused and in its original packaging.

Return procedure for BSO094N03S:

1.Submit a request within 90 days.

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

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