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STMicroelectronics STD40P8F6AG

Name: STD40P8F6AG
Brand: STMicroelectronics
SKU: STD40P8F6AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STD40P8F6AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: STD40P8F6AG.pdf

Description:: MOSFET P-CH 80V DPAK

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Product details

Overview

STD40P8F6AG from STMicroelectronics is an AEC-Q101-qualified P-channel automotive Power MOSFET in DPAK (TO-252) package, featuring -80 V V_DS, 18.5 mΩ typ. R_DS(on) at V_GS = -10 V, and -40 A continuous drain current at T_C = 25 °C. It delivers high avalanche ruggedness (240 mJ E_AS) and low gate charge (73 nC Q_g), enabling efficient high-side switching in 12 V/24 V vehicle power distribution systems.

For engineers reviewing the STD40P8F6AG datasheet, STD40P8F6AG pinout, STD40P8F6AG application, or STD40P8F6AG equivalent, key selection criteria include verified -80 V blocking capability, thermal resistance junction-to-case of 1.5 °C/W, pulsed drain current rating of -160 A, and DPAK footprint compatibility with industrial-grade PCB layouts.

Technical Context

This P-channel MOSFET uses STripFET™ F6 trench-gate technology to achieve low R_DS(on) and reduced gate charge. Its negative threshold voltage (-2 to -4 V V_GS(th)) enables direct logic-level drive from automotive microcontrollers without level-shifting.

The device integrates a robust body diode with 35 ns t_rr and 44 nC Q_rr, supporting fast-switching inductive loads such as solenoids and motors. Thermal design is supported by validated R_thj-pcb = 50 °C/W on 1 in² FR-4 with 2 oz copper.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-80 V - supports 24 V automotive systems with 3× safety margin against load-dump transients
R_DS(on) max	28 mΩ - ensures ≤11.2 W conduction loss at -40 A, critical for thermally constrained modules
Q_g	73 nC - reduces gate driver power dissipation and enables <100 ns switching transitions
E_AS	240 mJ - withstands single-pulse inductive energy without failure in motor-control fault conditions
t_r/t_f	28.5 / 34.5 ns - minimizes switching losses in 20–100 kHz DC-DC and load-switching applications
R_thj-case	1.5 °C/W - allows 100 W P_TOT derating to 66.7 W at T_C = 100 °C for sustained operation
V_SD	-1.2 V - limits forward diode power loss to 48 W during freewheeling in H-bridge configurations

Pinout & Package

STD40P8F6AG is housed in a DPAK (TO-252) package with exposed drain tab (pin 2) for thermal and electrical connection. The plastic case conforms to ECOPACK® environmental standards and features standardized 2.28 mm pitch between gate and source pins.

Pin/Terminal	Circuit Role	Design Meaning
G (Pin 1)	Gate control input	Receives negative gate drive relative to source; threshold range -2 to -4 V enables TTL/CMOS-compatible control
S (Pin 3)	Source reference node	Serves as return path for load current and gate drive reference; tied to system ground or high-side rail
D (Pin 2, Tab)	Drain power terminal	Exposed metal tab electrically connected to drain; must be soldered to large copper pour for thermal management

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per JESD47
Very low R_DS(on)	18.5 mΩ typ. at -20 A reduces I²R losses by >35% vs legacy P-channel devices in same package
Low Q_g and Q_gd	73 nC total gate charge and 18 nC gate-drain charge minimize Miller-induced switching delays
High avalanche energy rating	240 mJ single-pulse E_AS eliminates need for external snubbers in relay replacement circuits
Optimized body diode	35 ns t_rr and low Q_rr enable clean commutation in bidirectional DC-DC converters

Applications

Body Control Module (BCM)

Engine Management System

Use Scenario: High-side power switching for lighting, HVAC actuators, and window lift motors in 12 V vehicle architectures.

IC Role / Device Role / Timing Role: P-channel load switch controlling up to -40 A DC loads with fast turn-off (<100 ns) to prevent latch-up during battery transients.

Use Value: Eliminates need for external charge pump; 1.5 °C/W R_thj-case enables compact heatsinkless designs in sealed BCM enclosures.

Use Scenario: Fuel injector driver and turbocharger actuator control in diesel and gasoline engines.

IC Role / Device Role / Timing Role: High-reliability power switch handling repetitive 160 A pulsed currents during injection events with minimal voltage overshoot.

Use Value: 240 mJ E_AS withstands inductive kickback without clamping diodes, reducing BOM count and PCB area.

Transmission Control Unit (TCU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Solenoid valve control for automatic transmission pressure regulation and gear shifting.

IC Role / Device Role / Timing Role: Fast-switching P-channel MOSFET driving inductive solenoids with precise 35 ns t_rr diode recovery.

Use Value: Low Q_rr (44 nC) prevents cross-conduction in half-bridge drivers, ensuring accurate PWM timing for hydraulic response.

Use Scenario: Power gating for radar sensor modules and camera ECU subsystems requiring ASIL-B compliance.

IC Role / Device Role / Timing Role: AEC-Q101-certified high-side switch enabling controlled power-up/down sequencing and fault isolation.

Use Value: -80 V V_DS rating accommodates ISO 7637-2 pulse 5a (120 V transient), meeting OEM EMC requirements without derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel automotive power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF4905PbF	R_DS(on) = 20 mΩ max at -40 A, V_DS = -55 V, non-AEC-Q101 rated	Limited to underhood ambient ≤105 °C; unsuitable for engine bay mounting	Select only for non-automotive industrial use where -55 V rating suffices and qualification is not required
STP40PF8F6	Same F6 die in TO-220 package; R_thj-case = 1.0 °C/W but larger footprint and no tape-and-reel option	Preferred for prototyping or low-volume thermal testing; incompatible with automated SMT assembly	Choose when higher power dissipation (>100 W) is needed and board space permits through-hole mounting

Compared with IRF4905PbF and STP40PF8F6, STD40P8F6AG uniquely combines AEC-Q101 qualification, DPAK SMT compatibility, and -80 V rating-making it the only drop-in solution for production automotive PCBs requiring zero rework on thermal and reliability validation.

Availability

STD40P8F6AG is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, transmission control units, and ADAS power gating applications requiring stable component supply across multi-year vehicle production cycles.

Supply support for STD40P8F6AG 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.

STD40P8F6AG belongs to the STripFET™ F6 automotive MOSFET product line, engineered specifically for high-efficiency, high-reliability power switching in harsh-temperature vehicle subsystems.

FAQ

Is STD40P8F6AG compatible with standard DPAK footprints?

Yes. STD40P8F6AG uses the DPAK (TO-252) type A2 package with defined mechanical dimensions: e = 2.28 mm pitch, D = 6.1 mm width, and E = 6.5 mm length. Its recommended PCB footprint matches IPC-7351B SO-252A standards and is identical to industry-standard DPAK land patterns used for thermal and assembly compatibility.

What is the maximum safe operating temperature for continuous operation?

The junction temperature must not exceed 175 °C, and continuous operation at full -40 A drain current requires case temperature ≤25 °C. At T_C = 100 °C, the rated current derates to -28 A per absolute maximum ratings table. Thermal design must maintain R_thj-pcb ≤50 °C/W on 1 in² FR-4 with 2 oz copper to avoid thermal runaway.

Does STD40P8F6AG require a gate resistor for stability?

A gate resistor (typically 4.7 Ω) is recommended to dampen ringing caused by parasitic inductance in high-speed switching. Data sheet Figure 13 confirms stable 17.5 ns t_d(on) and 68.5 ns t_d(off) using 4.7 Ω; omitting it may cause oscillation due to 4112 pF C_iss interacting with PCB trace inductance.

Can STD40P8F6AG replace N-channel MOSFETs in high-side configurations?

No-it is a P-channel device optimized for high-side switching without external level shifters, unlike N-channel MOSFETs which require gate voltage above the source. Its -2 to -4 V V_GS(th) and -80 V V_DS make it functionally distinct and not interchangeable with N-channel parts like STD10P2LLH6 in the same circuit topology.

STD40P8F6AG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 80 V

Current - Continuous Drain (Id) @ 25°C:: 40A (Tc)

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

Rds On (Max) @ Id, Vgs:: 28mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 73 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4112 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 100W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252 (DPAK)

STD40P8F6AG FAQ

1.How can I place an order for STD40P8F6AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STD40P8F6AG 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 STD40P8F6AG reliable?

The price and inventory of STD40P8F6AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD40P8F6AG is usually 5 days.

3.What payment methods are accepted for STD40P8F6AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD40P8F6AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STD40P8F6AG?

STD40P8F6AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STD40P8F6AG 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 STD40P8F6AG?

For technical support, including STD40P8F6AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD40P8F6AG requirements.

6.How does Aetrix verify that STD40P8F6AG is sourced from the original manufacturer or authorized distributors?

All STD40P8F6AG 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 STD40P8F6AG meets industry standards.

7.What is the process for return or replacement of STD40P8F6AG?

All STD40P8F6AG units undergo pre-shipment inspection (PSI). If there is an issue with STD40P8F6AG, 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 STD40P8F6AG part is unused and in its original packaging.

Return procedure for STD40P8F6AG:

1.Submit a request within 90 days.

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

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