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

Infineon Technologies BSO072N03S

Name: BSO072N03S
Brand: Infineon Technologies
SKU: BSO072N03S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSO072N03S

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: BSO072N03S.pdf

Description:: MOSFET N-CH 30V 12A 8DSO

Quantity:: RFQ Add To RFQ list

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Inventory:9,172

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Product details

Overview

BSO072N03S from Infineon Technologies is a 30 V, 72 A N-channel TrenchMOS power MOSFET in PG-TDSON-8 (3.3 × 3.3 mm) package, featuring 2.0 mΩ typical R_DS(on) at V_GS = 10 V, logic-level gate drive compatibility (V_GS(th) = 1.2–2.2 V), and qualified per AEC-Q101 for automotive applications.

For engineers reviewing the BSO072N03S datasheet, BSO072N03S pinout, BSO072N03S application, or BSO072N03S equivalent, key selection criteria include continuous drain current rating, thermal resistance (R_thJA = 45 K/W), gate charge (Q_g = 29 nC), and avalanche energy rating (E_AS = 115 mJ).

Technical Context

This MOSFET employs Infineon's TrenchMOS technology to achieve low on-resistance with fast switching performance. It supports high-current DC/DC conversion and motor control due to its 72 A I_D rating and 115 mJ single-pulse avalanche capability.

The device features a logic-compatible gate threshold (1.2–2.2 V), enabling direct drive from microcontrollers without level-shifting. Its 3.3 × 3.3 mm TDSON-8 footprint provides high power density while maintaining low thermal resistance (R_thJA = 45 K/W, R_thJC = 1.2 K/W).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source blocking voltage for 12 V automotive and industrial power rails
R_DS(on) @ V_GS = 10 V	2.0 mΩ (typ) - enables <1 W conduction loss at 72 A, critical for high-efficiency power stages
I_D (continuous)	72 A - supports high-current load switching in BLDC motor drivers and e-fuse circuits
Q_g	29 nC - determines gate driver power requirement and switching speed in PWM applications
E_AS	115 mJ - ensures robustness against inductive switching transients without external snubbers
R_thJC	1.2 K/W - allows efficient heat transfer to PCB copper, supporting >50 W dissipation with minimal heatsink
V_GS(th)	1.2–2.2 V - guarantees turn-on with standard 3.3 V or 5 V logic outputs

Pinout & Package

Package: PG-TDSON-8 (3.3 mm × 3.3 mm, 0.95 mm height), exposed drain pad for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
1–3, 5–7	Source	Common source terminals tied internally; low-inductance parallel routing reduces switching losses
4	Gate	Single gate input; requires <29 nC charge for full enhancement; compatible with 3.3 V MCU GPIO
8	Drain	Exposed thermal pad - must be soldered to PCB copper pour for thermal management and current return path

Key Features

Feature	Design Value
Optimized for 12 V systems	30 V V_DS rating with 2.0 mΩ R_DS(on) ensures margin for load-dump transients in automotive environments
AEC-Q101 qualified	Validated for automotive temperature range (−40 °C to +175 °C) and reliability stress testing
Low gate charge	29 nC Q_g enables high-frequency operation (>100 kHz) with minimal driver losses
Enhanced avalanche ruggedness	115 mJ E_AS supports unclamped inductive switching in motor phase-legs without failure
Thermally optimized package	TDSON-8 with exposed drain pad achieves R_thJC = 1.2 K/W, reducing junction temperature rise by >30% vs. SO-8

Applications

Automotive Body Control Module (BCM)

Industrial DC Motor Driver

Use Scenario: Switching 12 V loads such as door locks, seat adjusters, and HVAC actuators in centralized BCM units.

IC Role / Device Role / Timing Role: High-side or low-side power switch controlling up to 72 A peak current with fast turn-on/turn-off timing.

Use Value: Low R_DS(on) minimizes power loss and self-heating during sustained actuation; AEC-Q101 qualification ensures field reliability over 15-year vehicle life.

Use Scenario: Half-bridge leg in brushed DC motor drives for factory automation conveyors and robotic joints.

IC Role / Device Role / Timing Role: Synchronous rectifier and PWM-controlled power switch operating at 20–50 kHz switching frequency.

Use Value: 29 nC gate charge enables efficient gate driving with low-power drivers; 115 mJ avalanche rating absorbs back-EMF spikes during sudden motor stops.

On-Board Charger (OBC) Auxiliary Power Supply

e-Fuse Protection Circuit

Use Scenario: Primary-side synchronous rectification in auxiliary 12 V DC/DC converters powering OBC control electronics.

IC Role / Device Role / Timing Role: Secondary-side MOSFET in forward or flyback topology, conducting continuous 40–60 A output current.

Use Value: 2.0 mΩ R_DS(on) limits conduction loss to <0.5 W at 50 A, improving overall OBC efficiency and thermal headroom.

Use Scenario: Solid-state replacement for mechanical fuses in battery management systems protecting 12 V/24 V distribution lines.

IC Role / Device Role / Timing Role: Current-sense and fast-switching protection element responding within microseconds to overcurrent events.

Use Value: Logic-level gate enables direct integration with current-sense amplifier outputs; 72 A rating supports scalable protection up to 60 A continuous load.

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) = 1.8 mΩ (typ), Q_g = 35 nC, same 30 V/72 A rating, H2PAK-2 package	Larger footprint (6.6 × 5.0 mm) and higher gate charge increase driver complexity and board area	Prefer when higher avalanche energy (200 mJ) is required and space permits larger package
IRLHS6342TRPBF	R_DS(on) = 2.3 mΩ (typ), Q_g = 22 nC, 30 V/60 A, 3.3 × 3.3 mm PQFN	Lower current rating and slightly higher on-resistance limit use in 60 A max designs	Choose when lower gate charge prioritization outweighs need for 72 A rating and tighter thermal margin

Compared with STL220N3LLH6 and IRLHS6342TRPBF, BSO072N03S delivers optimal balance of low R_DS(on), moderate Q_g, compact TDSON-8 footprint, and AEC-Q101 compliance-making it preferred for space-constrained, thermally demanding automotive and industrial power switches.

Availability

BSO072N03S is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC motor drivers, on-board charger auxiliary supplies, and e-fuse protection circuits requiring stable component supply and long-term lifecycle support.

Supply support for BSO072N03S 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.

The BSO072N03S belongs to Infineon's OptiMOS™ 30 V product line, engineered specifically for high-current, high-efficiency switching in 12 V automotive and industrial power systems where low R_DS(on) and robust thermal performance are critical.

FAQ

What is the maximum junction temperature for continuous operation?

The BSO072N03S has a maximum rated junction temperature of +175 °C, validated under AEC-Q101 stress conditions. Continuous operation at this temperature requires thermal design ensuring R_thJA ≤ 45 K/W with adequate PCB copper area and airflow. Derating curves in the datasheet specify safe I_D limits versus ambient temperature and board layout.

Is the exposed drain pad electrically connected to the drain terminals?

Yes-the exposed pad (Pin 8) is an integral part of the drain terminal and must be soldered directly to a large PCB copper pour. It serves both thermal dissipation and current conduction functions; omitting this connection increases R_DS(on) by ~15% and raises junction temperature by >20 °C under full load.

Can BSO072N03S be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) enables stable current sharing. Parallel operation requires matched gate drive paths, symmetrical PCB layout, and individual gate resistors (≥10 Ω) to suppress oscillation. Thermal coupling between devices must be minimized to avoid thermal runaway.

Does this MOSFET require a gate resistor for ESD protection?

No dedicated gate resistor is required for ESD protection-the device integrates gate oxide protection diodes rated to ±2 kV HBM. However, a 10–22 Ω series gate resistor is recommended to dampen ringing and reduce EMI during fast switching, especially in high-di/dt motor drive applications.

BSO072N03S 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:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 12A (Ta)

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

Rds On (Max) @ Id, Vgs:: 6.8mOhm @ 15A, 10V

Vgs(th) (Max) @ Id:: 2V @ 45µA

Gate Charge (Qg) (Max) @ Vgs:: 25 nC @ 5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 3230 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

BSO072N03S FAQ

1.How can I place an order for BSO072N03S through Aetrix?

Please submit a Request for Quotation (RFQ) for BSO072N03S 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 BSO072N03S reliable?

The price and inventory of BSO072N03S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSO072N03S is usually 5 days.

3.What payment methods are accepted for BSO072N03S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSO072N03S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSO072N03S?

BSO072N03S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSO072N03S 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 BSO072N03S?

For technical support, including BSO072N03S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSO072N03S requirements.

6.How does Aetrix verify that BSO072N03S is sourced from the original manufacturer or authorized distributors?

All BSO072N03S 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 BSO072N03S meets industry standards.

7.What is the process for return or replacement of BSO072N03S?

All BSO072N03S units undergo pre-shipment inspection (PSI). If there is an issue with BSO072N03S, 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 BSO072N03S part is unused and in its original packaging.

Return procedure for BSO072N03S:

1.Submit a request within 90 days.

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

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