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Vishay Siliconix SQJ409EP-T1_BE3
- Part No.:
- SQJ409EP-T1_BE3
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- PowerPAK® SO-8
- Datasheet:
-
SQJ409EP-T1_BE3.pdf
- Description:
- P-CHANNEL 40-V (D-S) 175C MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:2,611
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Product details
Overview
SQJ409EP-T1_BE3 from Vishay Siliconix is an automotive-grade P-channel enhancement-mode MOSFET rated for -40 V drain-source voltage, 0.0070 Ω RDS(on) at VGS = -10 V, and -60 A continuous drain current at TC = 25 °C, designed for high-efficiency DC-DC power conversion and load switching in under-hood automotive modules.
For engineers reviewing the SQJ409EP-T1_BE3 datasheet, SQJ409EP-T1_BE3 pinout, SQJ409EP-T1_BE3 application, or SQJ409EP-T1_BE3 equivalent, this device supports AEC-Q101-compliant 175 °C junction operation, features 100 % Rg and UIS testing, and delivers low gate charge (170–260 nC) for fast switching in high-frequency synchronous rectification and battery disconnect circuits.
Technical Context
This P-channel TrenchFET® MOSFET operates with a gate-source threshold voltage of -1.5 to -2.5 V and maintains stable RDS(on) up to 175 °C junction temperature, enabling robust performance in engine control units and transmission control modules where thermal margin is critical. Its body diode exhibits 39–90 ns reverse recovery time and 45–100 nC Qrr, supporting efficient freewheeling in buck converters.
The device uses a PowerPAK® SO-8L single-package configuration with exposed-drain thermal pad and dual-side copper layout compatibility. It achieves 2.2 °C/W junction-to-case thermal resistance and supports peak pulsed drain current of -150 A under defined test conditions, making it suitable for transient-heavy automotive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | -40 V - Maximum blocking voltage for 12 V/24 V automotive battery rail protection |
| RDS(on) @ VGS = -10 V | 0.0070 Ω - Enables ≤ 4.2 W conduction loss at -60 A, critical for high-current load switches |
| RDS(on) @ VGS = -4.5 V | 0.0100 Ω - Ensures reliable turn-on with standard 5 V logic-level gate drive in microcontroller-based systems |
| ID (continuous) | -60 A @ TC = 25 °C - Supports high-power solenoid drivers and HVAC blower motor controls |
| Qg (total gate charge) | 170–260 nC - Determines gate driver power requirement and switching speed in 100–500 kHz DC-DC stages |
| TJ operating range | -55 to +175 °C - Qualified for under-hood placement without derating in modern ADAS and powertrain ECUs |
| RthJC | 2.2 °C/W - Enables direct thermal coupling to heatsink or PCB copper for high-power dissipation |
Pinout & Package
Package: PowerPAK® SO-8L (single), 5.13 mm × 6.15 mm footprint, thermally enhanced with exposed drain pad on bottom side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 7, 8 | Source (S) | Common source connection; pins 1/2/3/4/7/8 are internally bonded to source metallization for low-inductance return path |
| 5 | Gate (G) | Control input; requires < ±20 V rating and low-impedance drive due to 0.50–1.70 Ω gate resistance |
| 6 | Drain (D) | Main power output; connected to exposed copper pad on package underside for thermal and electrical conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD |
| 100 % Rg and UIS tested | Each unit screened for gate resistance consistency and unclamped inductive switching ruggedness up to 84 mJ |
| TrenchFET® technology | Delivers lower RDS(on) × area than planar MOSFETs, improving power density in space-constrained modules |
| Body diode with low Qrr | 45–100 nC reverse recovery charge enables reduced switching losses in synchronous rectifier applications |
| Exposed drain thermal pad | Enables direct thermal interface to PCB ground plane or heatsink, reducing RthJA to 68 °C/W on 1" FR4 board |
Applications
| Engine Control Unit (ECU) Load Switch | Automotive DC-DC Converter Synchronous Rectifier |
|---|---|
Use Scenario: High-side switching of fuel injector or ignition coil drivers in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: P-channel MOSFET used as high-side switch with gate driven by dedicated level-shifting driver IC. Use Value: Low RDS(on) minimizes I²R heating during sustained 10–20 A pulses; 175 °C rating ensures reliability near hot engine blocks. |
Use Scenario: Secondary-side synchronous rectification in 48 V–12 V bidirectional buck-boost converters for mild hybrid vehicles. IC Role / Device Role / Timing Role: P-channel MOSFET replacing Schottky diode to reduce forward conduction loss and improve efficiency above 10 A. Use Value: 0.0100 Ω RDS(on) at -4.5 V enables >95 % efficiency at full load; fast trr (39–90 ns) limits switching loss during dead-time transitions. |
| Transmission Control Module (TCM) Solenoid Driver | Automotive Battery Disconnect Switch |
Use Scenario: Driving high-current hydraulic solenoids (≥30 A) in automatic transmission valve bodies. IC Role / Device Role / Timing Role: Low-side or high-side power switch controlled via PWM from TCM MCU with external gate driver. Use Value: -150 A pulsed current rating handles solenoid inrush; UIS-tested ruggedness prevents failure during inductive kickback events. |
Use Scenario: Isolating 12 V starter battery from vehicle electronics during cranking or fault conditions. IC Role / Device Role / Timing Role: High-current P-channel MOSFET configured as ideal diode or active OR-ing switch in battery management subsystems. Use Value: -60 A continuous rating supports >500 W load isolation; AEC-Q101 qualification ensures functional safety compliance in ISO 26262 ASIL-B systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRF4905PbF | Higher RDS(on) (0.02 Ω @ -10 V), TO-220 package, no AEC-Q101 qualification | Not suitable for under-hood automotive use; limited to industrial or non-safety-critical loads | Select only if cost sensitivity outweighs thermal performance and automotive qualification requirements |
| DMTH4007LPSQ-13 | Same PowerPAK SO-8L package, slightly higher RDS(on) (0.0075 Ω @ -10 V), identical AEC-Q101 and 175 °C rating | Drop-in compatible for most SQJ409EP-T1_BE3 designs but with marginal conduction loss increase | Preferred when second-source assurance is required without layout change or thermal redesign |
Compared with IRF4905PbF, SQJ409EP-T1_BE3 delivers 65 % lower RDS(on) and automotive qualification; versus DMTH4007LPSQ-13, it offers tighter RDS(on) tolerance and lower gate charge, enabling faster switching and reduced driver losses in high-frequency power stages.
Availability
SQJ409EP-T1_BE3 is available at Aetrix Electronics and suitable for automotive powertrain control, ADAS sensor modules, and infotainment system power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SQJ409EP-T1_BE3 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
Vishay Siliconix is a global leader in discrete semiconductors, specializing in high-reliability MOSFETs, diodes, and optoelectronics for automotive, industrial, and computing markets.
The SQJ409EP-T1_BE3 belongs to Vishay's TrenchFET® automotive MOSFET product line, engineered specifically for high-current, high-temperature switching in engine, transmission, and chassis control systems where AEC-Q101 compliance and thermal resilience are mandatory.
FAQ
What is the maximum junction temperature rating for SQJ409EP-T1_BE3?
The SQJ409EP-T1_BE3 is rated for continuous operation from -55 °C to +175 °C junction temperature and is AEC-Q101 qualified for automotive under-hood environments. This 175 °C rating allows placement near heat sources such as engines or power inverters without thermal derating, and its RDS(on) remains stable up to this limit, ensuring predictable conduction loss in real-world conditions. The SQJ409EP-T1_BE3 datasheet confirms this rating under Absolute Maximum Ratings and Thermal Characteristics sections.
Is SQJ409EP-T1_BE3 suitable for synchronous rectification in a 48 V automotive DC-DC converter?
Yes, SQJ409EP-T1_BE3 is well-suited for synchronous rectification in 48 V–12 V or 48 V–5 V buck converters due to its low 0.0100 Ω RDS(on) at VGS = -4.5 V, 39–90 ns body diode reverse recovery time, and 45–100 nC Qrr. These parameters directly reduce conduction and switching losses compared to Schottky diodes, especially above 10 A. The SQJ409EP-T1_BE3 also supports fast turn-off with 75–120 ns turn-off delay time, minimizing shoot-through risk in high-frequency (>200 kHz) topologies.
Does SQJ409EP-T1_BE3 require a gate driver IC, or can it be driven directly by a microcontroller?
SQJ409EP-T1_BE3 can be driven directly by a 5 V microcontroller GPIO only in low-frequency, low-current applications due to its -2.0 V typical VGS(th) and 0.0100 Ω RDS(on) at -4.5 V. However, for robust switching at >10 kHz or with >10 A loads, a dedicated gate driver IC is recommended to deliver the 170–260 nC total gate charge quickly and minimize Miller plateau time. The SQJ409EP-T1_BE3 gate resistance (0.50–1.70 Ω) further necessitates low-impedance drive to avoid ringing and slow transitions.
What is the thermal resistance from junction to case (RthJC) for SQJ409EP-T1_BE3, and how does it impact heatsinking?
The SQJ409EP-T1_BE3 has a specified RthJC of 2.2 °C/W, measured from junction to the exposed drain pad on the bottom of the PowerPAK® SO-8L package. This low value enables efficient heat transfer to an external heatsink or thick PCB copper layer, allowing the device to dissipate up to 68 W at TC = 25 °C. For thermal design, this means the SQJ409EP-T1_BE3 must be soldered to a thermally optimized pad with multiple vias to inner-layer ground planes to realize the full benefit of its RthJC rating.
How does the AEC-Q101 qualification of SQJ409EP-T1_BE3 differ from standard industrial MOSFETs?
AEC-Q101 qualification for SQJ409EP-T1_BE3 includes accelerated stress tests beyond JEDEC standards-such as 1000-hour high-temperature operating life (HTOL) at 175 °C, 1000-cycle temperature cycling (-55 °C to +175 °C), and unclamped inductive switching (UIS) validation-ensuring reliability in automotive vibration, thermal shock, and electrical noise environments. Standard industrial MOSFETs lack this validation, making SQJ409EP-T1_BE3 appropriate for ASIL-B functional safety applications where field failure is unacceptable. The SQJ409EP-T1_BE3 documentation explicitly cites AEC-Q101 compliance in its Features section.
SQJ409EP-T1_BE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- TrenchFET®
- Package/Case:
- PowerPAK® SO-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 60A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 7mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 2.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 260 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 11000 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 68W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerPAK® SO-8
SQJ409EP-T1_BE3 FAQ
1.How can I place an order for SQJ409EP-T1_BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SQJ409EP-T1_BE3 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 SQJ409EP-T1_BE3 reliable?
The price and inventory of SQJ409EP-T1_BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SQJ409EP-T1_BE3 is usually 5 days.
3.What payment methods are accepted for SQJ409EP-T1_BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SQJ409EP-T1_BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SQJ409EP-T1_BE3?
SQJ409EP-T1_BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SQJ409EP-T1_BE3 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 SQJ409EP-T1_BE3?
For technical support, including SQJ409EP-T1_BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SQJ409EP-T1_BE3 requirements.
6.How does Aetrix verify that SQJ409EP-T1_BE3 is sourced from the original manufacturer or authorized distributors?
All SQJ409EP-T1_BE3 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 SQJ409EP-T1_BE3 meets industry standards.
7.What is the process for return or replacement of SQJ409EP-T1_BE3?
All SQJ409EP-T1_BE3 units undergo pre-shipment inspection (PSI). If there is an issue with SQJ409EP-T1_BE3, 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 SQJ409EP-T1_BE3 part is unused and in its original packaging.
Return procedure for SQJ409EP-T1_BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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