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

Infineon Technologies BSS209PW L6327

Name: BSS209PW L6327
Brand: Infineon Technologies
SKU: BSS209PW L6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSS209PW L6327

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: SC-70, SOT-323

Datasheet:: BSS209PW L6327.pdf

Description:: MOSFET P-CH 20V 580MA SOT323-3

Quantity:: RFQ Add To RFQ list

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Inventory:3,229

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Product details

Overview

BSS209PW from Infineon Technologies is a P-channel enhancement-mode MOSFET optimized for logic-level gate drive at 2.5 V, with R_DS(on) ≤ 550 mΩ at V_GS = −2.5 V and I_D = −0.46 A, −379 mΩ at V_GS = −4.5 V and I_D = −0.63 A, rated for 150 °C operation and qualified per AEC-Q101 for automotive body electronics.

For engineers reviewing the BSS209PW datasheet, BSS209PW pinout, BSS209PW application, or BSS209PW equivalent, this device is selected for low-voltage load switching in space-constrained PCBs where avalanche ruggedness, dv/dt immunity, and halogen-free RoHS compliance are required.

Technical Context

This OptiMOS®-P small-signal transistor uses trench-based silicon technology to achieve low gate charge (Q_g ≤ 1.3 nC) and fast switching (t_r ≤ 11 ns, t_f ≤ 6.9 ns), enabling efficient operation in high-frequency DC-DC converters and PWM-controlled LED drivers.

Its integrated body diode exhibits t_rr ≤ 11.2 ns and Q_rr ≤ 1.59 nC at T_j = 25 °C, supporting synchronous rectification and flyback snubberless topologies without external diode supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	−20 V maximum drain-source voltage - supports 12 V automotive rail and 15 V industrial bus systems with margin
R_DS(on) @ V_GS = −2.5 V	≤ 900 mΩ - enables direct interface with 2.5 V logic or microcontroller GPIO without level-shifting
R_DS(on) @ V_GS = −4.5 V	≤ 550 mΩ - reduces conduction loss in battery-powered load switches operating from 3.3 V or 5 V rails
I_D continuous	−0.63 A at T_C = 70 °C - suitable for driving small solenoids, relays, or LED strings up to 3 W
E_AS	≥ 55 mJ - provides single-pulse avalanche energy handling for inductive load turn-off transients
dv/dt rating	≥ 2 kV/µs - ensures robustness against fast-rising noise in motor control and automotive CAN node power stages
Q_g	≤ 1.3 nC - minimizes gate drive power and allows use of low-current drivers like STM32 GPIO or TC74HC series

Pinout & Package

Package: PG-SOT-323 (SOT-323), surface-mount, lead-free, halogen-free, JEDEC-compliant 3-pin plastic package with exposed drain pad for thermal enhancement.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Source terminal for P-channel channel	Connected to higher potential rail; serves as reference for gate control and current return path
2 (Gate)	Control electrode	Accepts logic-level negative voltage relative to source; threshold V_GS(th) = −0.6 to −1.2 V enables 2.5 V drive
3 (Drain)	Current output terminal	Connected to load; thermally coupled to PCB copper area via exposed pad for R_thJS = 120 K/W

Key Features

Feature	Design Value
Avalanche-rated operation	Guarantees safe single-pulse energy absorption up to 55 mJ without failure under inductive switching stress
Super Logic-level gate	Full enhancement at V_GS = −2.5 V enables direct drive from 2.5 V/3.3 V microcontrollers without external level shifters
AEC-Q101 qualification	Validated for automotive applications including interior lighting, door modules, and HVAC actuators
dv/dt immune design	Rated ≥ 2 kV/µs prevents false turn-on during high-noise commutation in motor gate drivers and power supplies
Halogen-free & RoHS	Complies with IEC61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained end equipment

Applications

Automotive Interior Lighting

USB-C Power Delivery Load Switch

Use Scenario: Controlling 12 V LED strips in vehicle cabin lighting with PWM dimming at 1–20 kHz.

IC Role / Device Role / Timing Role: Low-side load switch managing current path to LEDs; operates in linear and saturated regions during PWM transitions.

Use Value: R_DS(on) ≤ 550 mΩ at −4.5 V ensures < 150 mW conduction loss at 0.6 A, while avalanche rating absorbs inductive kick from long PCB traces.

Use Scenario: Enabling/disabling 5 V/3 A USB-C power path in portable docking stations with hot-plug detection.

IC Role / Device Role / Timing Role: High-side or low-side power switch controlled by USB PD controller GPIO; requires fast turn-on (t_d(on) ≤ 4 ns) and low Q_g.

Use Value: Q_g ≤ 1.3 nC and t_r/t_f ≤ 11/6.9 ns enable clean 10 µs enable/disable transitions without overshoot or shoot-through risk.

Industrial Sensor Interface Protection

Smart Home Actuator Driver

Use Scenario: Isolating 24 V field sensors from PLC input cards using reverse-polarity and overvoltage protection.

IC Role / Device Role / Timing Role: Reverse-battery protection switch placed between supply and sensor; conducts only when polarity is correct.

Use Value: V_GS(th) = −0.6 to −1.2 V ensures reliable turn-on at 24 V with minimal voltage drop; R_DS(on) ≤ 550 mΩ limits forward drop to < 330 mV at 0.6 A.

Use Scenario: Driving 12 V latching solenoids in smart locks and thermostats with battery backup and MCU-controlled sequencing.

IC Role / Device Role / Timing Role: Low-side driver for inductive actuator coil; handles repetitive 100 ms pulses with peak I_D = −4 A (pulsed).

Use Value: I_D,pulse = −4 A and t_rr ≤ 11.2 ns minimize diode recovery losses during coil de-energization, reducing EMI and heat generation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel logic-level MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMG2305UVT-7	R_DS(on) = 48 mΩ @ −4.5 V (lower), but V_DS = −20 V same; SOT-523 package (smaller footprint, higher R_thJA)	Better for ultra-compact 3.3 V IoT nodes; less thermal margin in sustained 0.6 A loads	Prefer when board space is critical and ambient temperature stays below 60 °C
SI2301BDS-T1-GE3	R_DS(on) = 115 mΩ @ −2.5 V (superior logic-level performance); V_DS = −20 V; SOT-23 package	Higher gate threshold consistency across temperature; better for 2.5 V-only MCU interfaces	Choose when guaranteed 2.5 V turn-on is mandatory and AEC-Q101 is not required

Compared with DMG2305UVT-7 and SI2301BDS-T1-GE3, the BSS209PW offers balanced trade-offs: AEC-Q101 qualification and 150 °C rating suit automotive environments, while its SOT-323 footprint provides better thermal dissipation than SOT-523 and more robust dv/dt immunity than many SOT-23 alternatives.

Availability

BSS209PW is available at Aetrix Electronics and suitable for automotive body electronics, USB-C power delivery subsystems, industrial sensor protection circuits, and smart home actuator drivers requiring stable component supply and long-term lifecycle support.

Supply support for BSS209PW 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 ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

The OptiMOS®-P product line delivers high-performance P-channel MOSFETs for low-voltage logic-level switching in automotive, industrial, and consumer applications, emphasizing ruggedness, thermal efficiency, and AEC-Q101 compliance.

FAQ

What is the maximum continuous drain current for BSS209PW at 70 °C case temperature?

The maximum continuous drain current is −0.63 A at T_C = 70 °C, as specified in the Absolute Maximum Ratings table. This value reflects thermal derating from the 2.5 A pulsed rating and accounts for junction-to-case thermal resistance (R_thJC ≈ 120 K/W) under typical PCB mounting conditions with 6 cm² copper area.

Does BSS209PW require a gate resistor for 3.3 V MCU drive?

No external gate resistor is required for basic on/off switching with a 3.3 V MCU, since V_GS(th) ranges from −0.6 V to −1.2 V and full enhancement occurs at −2.5 V. However, a 10–100 Ω series resistor is recommended to dampen ringing during fast PWM edges and limit peak gate current during transient events.

Is the body diode in BSS209PW suitable for reverse current freewheeling?

Yes - the integrated body diode has t_rr ≤ 11.2 ns and Q_rr ≤ 1.59 nC at 25 °C, making it suitable for low-energy freewheeling in low-duty-cycle inductive loads such as solenoids and small relays. It is not recommended for high-frequency synchronous rectification above 500 kHz due to limited softness and lack of specified Q_rr temperature dependence.

How does the avalanche rating impact circuit design?

The BSS209PW's E_AS ≥ 55 mJ rating allows it to safely absorb single inductive energy spikes-such as those from relay or solenoid coil turn-off-without external snubbers. Designers must ensure pulse duration remains within the SOA curve limits and that repetitive avalanche is avoided, as the rating applies only to non-repetitive events per JEDEC JESD24-1.

BSS209PW L6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OptiMOS™

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 580mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 4.5V

Rds On (Max) @ Id, Vgs:: 550mOhm @ 580mA, 4.5V

Vgs(th) (Max) @ Id:: 1.2V @ 3.5µA

Gate Charge (Qg) (Max) @ Vgs:: 1.38 nC @ 4.5 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 89.9 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 300mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT323

BSS209PW L6327 FAQ

1.How can I place an order for BSS209PW L6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSS209PW L6327 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 BSS209PW L6327 reliable?

The price and inventory of BSS209PW L6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS209PW L6327 is usually 5 days.

3.What payment methods are accepted for BSS209PW L6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS209PW L6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSS209PW L6327?

BSS209PW L6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSS209PW L6327 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 BSS209PW L6327?

For technical support, including BSS209PW L6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS209PW L6327 requirements.

6.How does Aetrix verify that BSS209PW L6327 is sourced from the original manufacturer or authorized distributors?

All BSS209PW L6327 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 BSS209PW L6327 meets industry standards.

7.What is the process for return or replacement of BSS209PW L6327?

All BSS209PW L6327 units undergo pre-shipment inspection (PSI). If there is an issue with BSS209PW L6327, 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 BSS209PW L6327 part is unused and in its original packaging.

Return procedure for BSS209PW L6327:

1.Submit a request within 90 days.

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

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