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

Vishay Siliconix SQJA84EP-T1_BE3

Name: SQJA84EP-T1_BE3
Brand: Vishay Siliconix
SKU: SQJA84EP-T1_BE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SQJA84EP-T1_BE3

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: PowerPAK® SO-8 Dual

Datasheet:: SQJA84EP-T1_BE3.pdf

Description:: N-CHANNEL 80-V (D-S) 175C MOSFET

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Product details

Overview

SQJA84EP-T1_BE3 from Vishay Siliconix is an automotive-grade N-channel TrenchFET® power MOSFET rated for 80 V drain-source voltage, 46 A continuous drain current at 25 °C, and 175 °C maximum junction temperature. It delivers R_DS(on) of 0.0125 Ω at V_GS = 10 V and 0.0160 Ω at V_GS = 4.5 V in a PowerPAK® SO-8L package, designed for high-efficiency DC-DC conversion and motor control in under-hood automotive systems.

For engineers reviewing the SQJA84EP-T1_BE3 datasheet, SQJA84EP-T1_BE3 pinout, SQJA84EP-T1_BE3 application, or SQJA84EP-T1_BE3 equivalent, key selection criteria include its AEC-Q101 qualification, 100 % R_g and UIS testing, thermal performance (R_thJC = 2.7 °C/W), and compatibility with 4.5 V logic-level gate drive in space-constrained power stages.

Technical Context

This MOSFET employs trench-gate silicon technology to achieve low on-resistance and fast switching dynamics. Its gate charge profile (Q_g = 21–35 nC, Q_gd = 3 nC) supports efficient operation in synchronous buck converters operating up to 500 kHz.

The device integrates a robust body diode with V_SD = 0.82–1.2 V at I_F = 10 A and is characterized for avalanche energy (E_AS = 36 mJ), enabling reliable operation in inductive load switching and regenerative braking circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	80 V - Maximum blocking voltage for 12 V/24 V automotive battery rail protection and high-side switch applications
R_DS(on) @ V_GS = 10 V	0.0125 Ω - Enables ≤ 5.8 W conduction loss at 46 A, critical for thermally constrained engine control units
R_DS(on) @ V_GS = 4.5 V	0.0160 Ω - Ensures full enhancement with standard 5 V microcontroller GPIOs without level-shifting
I_D (continuous, T_C = 25 °C)	46 A - Supports high-current loads such as radiator fan drivers and EPS assist motors
T_J max	+175 °C - Qualified for under-hood placement near engines and exhaust systems per AEC-Q101
R_thJC	2.7 °C/W - Allows direct thermal coupling to heatsink or copper pour for >30 W power dissipation
Q_g	21–35 nC - Enables low gate-drive power consumption and <35 ns total switching time (t_d(on) + t_r + t_d(off) + t_f)

Pinout & Package

Package: PowerPAK® SO-8L - leadless, surface-mount, 5.13 mm × 6.15 mm footprint with exposed drain pad on bottom side for enhanced thermal conduction. Compliant with IPC-7351B SOIC-8 variant land pattern.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 7, 8 (Drain pads)	Drain (D)	Multiple parallel drain terminals connected to internal die source metallization; must be soldered to large PCB copper area for thermal management
5	Gate (G)	Control input requiring <35 nC charge; layout must minimize trace inductance to suppress ringing during hard switching
6	Source (S)	Power return path and gate reference; tied to PCB ground plane with low-inductance connection to reduce shoot-through risk

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive mission-critical applications including engine management and ADAS power supplies
100 % R_g and UIS tested	Each unit screened for gate resistance consistency and unclamped inductive switching robustness-no field failures due to transient overstress
TrenchFET® architecture	Delivers 23 % lower R_DS(on) vs. planar MOSFETs at same die size, reducing board area in dual-phase controllers
PowerPAK SO-8L package	Thermal resistance 3× lower than standard SO-8; enables 55 W P_D at T_C = 25 °C without external heatsink
175 °C operation	Supports extended lifetime at elevated ambient temperatures common in EV power distribution modules

Applications

Engine Control Unit (ECU) Fuel Injector Driver	Automotive DC-DC Converter Primary Switch
Use Scenario: High-speed, high-current switching of 12 V fuel injectors in gasoline direct injection systems. IC Role / Device Role / Timing Role: Low-side switching MOSFET controlling injector coil current with precise 1–5 ms pulse width modulation. Use Value: R_DS(on) ≤ 0.016 Ω at 4.5 V gate drive ensures <1.2 W conduction loss per injector, minimizing ECU thermal load.	Use Scenario: Primary-side synchronous rectifier in 12 V → 5 V/3.3 V buck converter for infotainment head units. IC Role / Device Role / Timing Role: High-efficiency power switch operating at 300–500 kHz with minimal switching losses. Use Value: Q_g = 21–35 nC and C_iss = 1565–2100 pF enable <15 ns rise/fall times, reducing transition losses by 38 % vs. legacy SO-8 devices.
Electric Power Steering (EPS) Motor Phase Leg	Automotive HVAC Blower Motor Controller
Use Scenario: Half-bridge phase leg in 24 V EPS motor driver handling peak currents up to 40 A. IC Role / Device Role / Timing Role: N-channel high-side or low-side switch in three-phase inverter with integrated bootstrap gate drive. Use Value: 100 % UIS-tested avalanche capability (E_AS = 36 mJ) prevents failure during motor stall or short-circuit events.	Use Scenario: PWM-controlled blower motor driver in climate control systems with variable speed demand. IC Role / Device Role / Timing Role: Low-side power switch modulating motor current at 20–100 Hz with soft-start ramping. Use Value: R_thJC = 2.7 °C/W allows direct mounting to aluminum chassis, eliminating discrete heatsinks and reducing BOM count by one component.

Engine Control Unit (ECU) Fuel Injector Driver

Automotive DC-DC Converter Primary Switch

Use Scenario: High-speed, high-current switching of 12 V fuel injectors in gasoline direct injection systems.

IC Role / Device Role / Timing Role: Low-side switching MOSFET controlling injector coil current with precise 1–5 ms pulse width modulation.

Use Value: R_DS(on) ≤ 0.016 Ω at 4.5 V gate drive ensures <1.2 W conduction loss per injector, minimizing ECU thermal load.

Use Scenario: Primary-side synchronous rectifier in 12 V → 5 V/3.3 V buck converter for infotainment head units.

IC Role / Device Role / Timing Role: High-efficiency power switch operating at 300–500 kHz with minimal switching losses.

Use Value: Q_g = 21–35 nC and C_iss = 1565–2100 pF enable <15 ns rise/fall times, reducing transition losses by 38 % vs. legacy SO-8 devices.

Electric Power Steering (EPS) Motor Phase Leg

Automotive HVAC Blower Motor Controller

Use Scenario: Half-bridge phase leg in 24 V EPS motor driver handling peak currents up to 40 A.

IC Role / Device Role / Timing Role: N-channel high-side or low-side switch in three-phase inverter with integrated bootstrap gate drive.

Use Value: 100 % UIS-tested avalanche capability (E_AS = 36 mJ) prevents failure during motor stall or short-circuit events.

Use Scenario: PWM-controlled blower motor driver in climate control systems with variable speed demand.

IC Role / Device Role / Timing Role: Low-side power switch modulating motor current at 20–100 Hz with soft-start ramping.

Use Value: R_thJC = 2.7 °C/W allows direct mounting to aluminum chassis, eliminating discrete heatsinks and reducing BOM count by one component.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 80 V automotive MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N8F7AG	R_DS(on) = 0.0019 Ω @ 10 V (lower), but 5× higher Q_g (110 nC); PowerFLAT 5x6 package	Better conduction efficiency but slower switching; suited for <100 kHz applications only	Select when lowest R_DS(on) dominates over switching loss; verify gate driver can supply 110 nC per cycle
IRF3710PBF	Legacy TO-220 package; R_DS(on) = 0.028 Ω @ 10 V; no AEC-Q101 qualification; R_thJC = 1.5 °C/W	Larger footprint, higher thermal resistance, non-automotive grade; requires mechanical heatsink	Acceptable for non-automotive industrial prototypes; not suitable for production automotive designs

Compared with STL220N8F7AG and IRF3710PBF, SQJA84EP-T1_BE3 offers optimal balance of low R_DS(on), moderate Q_g, AEC-Q101 compliance, and compact PowerPAK SO-8L thermal performance-making it the preferred choice for volume automotive power stages where reliability, size, and efficiency are jointly constrained.

Availability

SQJA84EP-T1_BE3 is available at Aetrix Electronics and suitable for automotive engine control, DC-DC conversion, electric power steering, and HVAC blower motor applications requiring stable component supply across multi-year vehicle production cycles.

Supply support for SQJA84EP-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 SQJA84EP-T1_BE3 belongs to Vishay's TrenchFET® automotive power MOSFET family, engineered specifically for high-temperature, high-current switching in safety-critical vehicle subsystems.

FAQ

What is the maximum junction temperature rating for SQJA84EP-T1_BE3?

The SQJA84EP-T1_BE3 is rated for a maximum junction temperature of +175 °C, validated per AEC-Q101 stress test conditions. This rating enables operation in under-hood environments where ambient temperatures exceed 125 °C, provided thermal design maintains T_J ≤ 175 °C using the specified R_thJC = 2.7 °C/W path. Derating curves in the datasheet confirm sustained 46 A current capability at T_C = 125 °C.

Is SQJA84EP-T1_BE3 compatible with standard SO-8 PCB footprints?

No, SQJA84EP-T1_BE3 uses the PowerPAK® SO-8L package-a leadless variant with bottom-exposed drain pads and no gull-wing leads. It requires the dedicated IPC-7351B-compliant land pattern documented in Vishay's Package Drawing 66934, not the traditional SO-8 outline. Using a standard SO-8 footprint will result in insufficient solder joint formation and thermal failure.

Does SQJA84EP-T1_BE3 support 4.5 V logic-level gate drive?

Yes, SQJA84EP-T1_BE3 is fully enhanced at V_GS = 4.5 V, delivering R_DS(on) = 0.0160 Ω at I_D = 8 A. Its gate threshold voltage (V_GS(th)) ranges from 1.5 V to 2.5 V, ensuring reliable turn-on with 3.3 V or 5 V microcontroller outputs without external level shifters-critical for cost-sensitive automotive body control modules.

What avalanche energy rating does SQJA84EP-T1_BE3 have?

SQJA84EP-T1_BE3 is rated for single-pulse avalanche energy E_AS = 36 mJ at L = 0.1 mH, verified per JEDEC JESD24-1. This specification supports robust operation during inductive load switching transients, such as fuel injector coil de-energization or motor phase commutation, without requiring external snubbers in properly designed layouts.

How is thermal performance validated for SQJA84EP-T1_BE3?

Thermal resistance values for SQJA84EP-T1_BE3-including R_thJC = 2.7 °C/W and R_thJA = 70 °C/W-are measured per JEDEC JESD51-14 (transient dual-interface) and JESD51-2 (steady-state) standards. The R_thJA value assumes mounting on a 1" × 1" FR4 PCB with 2 oz. copper on both sides; actual board-level performance depends on copper area, layer stack-up, and airflow.

SQJA84EP-T1_BE3 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: PowerPAK® SO-8 Dual

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 80 V

Current - Continuous Drain (Id) @ 25°C:: 46A (Tc)

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

Rds On (Max) @ Id, Vgs:: 12.5mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 35 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2100 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 55W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerPAK® SO-8 Dual

SQJA84EP-T1_BE3 FAQ

1.How can I place an order for SQJA84EP-T1_BE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for SQJA84EP-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 SQJA84EP-T1_BE3 reliable?

The price and inventory of SQJA84EP-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 SQJA84EP-T1_BE3 is usually 5 days.

3.What payment methods are accepted for SQJA84EP-T1_BE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SQJA84EP-T1_BE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SQJA84EP-T1_BE3?

SQJA84EP-T1_BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SQJA84EP-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 SQJA84EP-T1_BE3?

For technical support, including SQJA84EP-T1_BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SQJA84EP-T1_BE3 requirements.

6.How does Aetrix verify that SQJA84EP-T1_BE3 is sourced from the original manufacturer or authorized distributors?

All SQJA84EP-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 SQJA84EP-T1_BE3 meets industry standards.

7.What is the process for return or replacement of SQJA84EP-T1_BE3?

All SQJA84EP-T1_BE3 units undergo pre-shipment inspection (PSI). If there is an issue with SQJA84EP-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 SQJA84EP-T1_BE3 part is unused and in its original packaging.

Return procedure for SQJA84EP-T1_BE3:

1.Submit a request within 90 days.

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

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