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Vishay Siliconix SQJ459EP-T1_BE3
- Part No.:
- SQJ459EP-T1_BE3
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- PowerPAK® SO-8
- Datasheet:
-
SQJ459EP-T1_BE3.pdf
- Description:
- P-CHANNEL 60-V (D-S) 175C MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
SQJ459EP-T1_BE3 from Vishay Siliconix is an automotive-grade P-channel enhancement-mode MOSFET designed for high-efficiency DC-DC conversion and load switching in 12 V/24 V systems. It features -60 V VDS, 0.018 Ω RDS(on) at -10 V VGS, -52 A continuous drain current, and AEC-Q101 qualification for under-hood applications including body control modules and power distribution units.
For engineers reviewing the SQJ459EP-T1_BE3 datasheet, SQJ459EP-T1_BE3 pinout, SQJ459EP-T1_BE3 application, or SQJ459EP-T1_BE3 equivalent, key selection criteria include its PowerPAK® SO-8L leadless package thermal performance (RthJC = 1.8 °C/W), -175 °C maximum junction temperature rating, and verified 100 % UIS and Rg testing for robustness in automotive transients.
Technical Context
This P-channel MOSFET operates as a high-side switch with gate threshold voltage of -1.5 V to -2.5 V, enabling direct drive from standard 3.3 V or 5 V microcontrollers when used with level-shifting circuitry. Its trench-based silicon architecture delivers low gate charge (73 nC typical) and fast switching (td(off) = 88 ns), supporting high-frequency synchronous buck converters and active OR-ing circuits.
The device integrates a source-drain diode with VSD = -0.8 V at -2.5 A and supports pulsed avalanche energy up to 80 mJ. Thermal design leverages the exposed copper drain pad on the bottom side of the PowerPAK SO-8L package, requiring PCB copper area optimization per Vishay's recommended 7.25 mm × 8.25 mm pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | -60 V - Withstands reverse battery and load-dump transients in 24 V automotive systems without clamping. |
| RDS(on) @ -10 V | 0.018 Ω - Enables <1 W conduction loss at 7.5 A, critical for thermally constrained ECUs. |
| ID (continuous) | -52 A @ TC = 25 °C - Supports high-current power rails in junction-box modules and battery disconnect switches. |
| Junction temp. range | -55 °C to +175 °C - Certified for under-hood placement near engines and transmissions. |
| Qg (total) | 73 nC typical - Reduces gate driver power demand and enables efficient operation at >200 kHz switching frequencies. |
| RthJC | 1.8 °C/W - Allows direct thermal coupling to heatsink or copper plane for high-power dissipation. |
| AEC-Q101 qualified | Yes - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and UHAST. |
Pinout & Package
Package: PowerPAK® SO-8L (leadless, single-channel, bottom-side thermal pad). Dimensions: 5.13 mm × 6.15 mm × 1.07 mm (L × W × H), with exposed copper drain terminal on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 7, 8 | Source (S) | Common source connection; pins 1/2/3/7/8 are internally bonded and must be tied together on PCB for low-inductance return path. |
| 4 | Gate (G) | Control input; requires <20 V absolute max rating; gate resistance 0.5–2 Ω ensures stable turn-on/turn-off timing. |
| 5, 6 | Drain (D) | Main power output; connected to exposed copper thermal pad on bottom surface-must be soldered to large PCB copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| TrenchFET® technology | Delivers lowest RDS(on) × Qg figure-of-merit in its class, reducing both conduction and switching losses simultaneously. |
| 100 % Rg and UIS tested | Each unit undergoes individual gate resistance screening and unclamped inductive switching validation-ensures reliability in motor drive and solenoid control. |
| PowerPAK SO-8L package | Thermal resistance RthJA = 65 °C/W on 1"² FR4 board-enables 2× higher power density than standard SO-8. |
| Source-drain diode | VSD = -0.8 V at -2.5 A-supports freewheeling in high-side switch configurations without external Schottky diode. |
| High-temperature operation | Rated for continuous operation at TJ = 175 °C-eliminates derating concerns in compact, sealed enclosures. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Power Distribution |
|---|---|
Use Scenario: High-side switching of lighting loads (headlamps, fog lamps) and HVAC actuators in centralized vehicle body controllers. IC Role / Device Role / Timing Role: P-channel MOSFET configured as load switch with integrated diagnostics via current-sense resistor feedback. Use Value: Low RDS(on) minimizes self-heating during PWM dimming; AEC-Q101 qualification ensures functional safety compliance per ISO 26262 ASIL-B subsystems. | Use Scenario: Isolation and sequencing of auxiliary power rails (e.g., fuel pump, turbocharger oil pump) in engine management systems. IC Role / Device Role / Timing Role: High-side protection switch with fast turn-off (<117 ns td(off)) to prevent fault propagation during overcurrent events. Use Value: 80 mJ single-pulse avalanche energy rating withstands inductive kickback from solenoid valves without external snubbers. |
| Battery Disconnect Unit (BDU) | 12 V/48 V Dual-Voltage DC-DC Converter |
Use Scenario: Main contactor replacement in 12 V battery management systems for start-stop and regenerative braking energy routing. IC Role / Device Role / Timing Role: Bidirectional current-handling switch operating in linear mode during soft-start and saturated mode during steady-state conduction. Use Value: -75 A continuous source current rating supports reverse-current capability required for BMS cell balancing and fault isolation. | Use Scenario: Synchronous rectification in high-efficiency bidirectional buck-boost converters linking 12 V and 48 V domains in mild-hybrid architectures. IC Role / Device Role / Timing Role: Secondary-side P-channel switch synchronized to primary-side FET using isolated gate driver with adaptive dead-time control. Use Value: Low Ciss (3448 pF typ.) and Crss (234 pF typ.) reduce cross-conduction risk and improve light-load efficiency above 95 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRF9530NPbF | TO-220 package, RDS(on) = 0.3 Ω @ -10 V, lower current (-12 A), no AEC-Q101 qualification | Non-automotive industrial switching only; unsuitable for under-hood use due to package thermal limits and qualification gap | Select only for cost-sensitive non-automotive prototypes where footprint and thermal performance are secondary. |
| DMTH6016LPS-13 | PowerDI 5060 package, RDS(on) = 0.016 Ω @ -10 V, same AEC-Q101 rating, but lower ID (-42 A) | Better RDS(on) but reduced current handling; smaller footprint may limit thermal margin in high-duty-cycle applications | Prefer for space-constrained designs where peak current stays below 40 A and PCB copper area is limited. |
Compared with IRF9530NPbF and DMTH6016LPS-13, SQJ459EP-T1_BE3 uniquely balances -52 A current capacity, 0.018 Ω on-resistance, and AEC-Q101 qualification in a thermally optimized PowerPAK SO-8L package-making it the optimal choice for production automotive power stages requiring both robustness and efficiency.
Availability
SQJ459EP-T1_BE3 is available at Aetrix Electronics and suitable for automotive body electronics, engine control systems, and battery management applications requiring stable component supply across multi-year vehicle production cycles.
Supply support for SQJ459EP-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-performance MOSFETs, diodes, and optoelectronics for automotive, industrial, and computing markets.
The SQJ459EP-T1_BE3 belongs to Vishay's Automotive TrenchFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature power switching in next-generation electric and hybrid vehicle architectures.
FAQ
What is the maximum gate-source voltage rating for SQJ459EP-T1_BE3?
The SQJ459EP-T1_BE3 has a maximum gate-source voltage rating of ±20 V. Exceeding this limit risks permanent gate oxide damage. In practice, gate drive should be limited to -10 V for full enhancement and -4.5 V for logic-level compatibility, with appropriate series gate resistance (≥10 Ω) to suppress ringing during fast transitions. The SQJ459EP-T1_BE3 datasheet specifies ±100 nA gate leakage at ±20 V, confirming safe operation within this absolute maximum rating.
Does SQJ459EP-T1_BE3 require a gate driver IC in automotive applications?
SQJ459EP-T1_BE3 can be driven directly by 5 V microcontrollers in low-frequency switching applications (<10 kHz), but a dedicated gate driver IC is strongly recommended for automotive use. Its 73 nC total gate charge and 0.5–2 Ω intrinsic gate resistance necessitate controlled slew rates to avoid EMI and ensure clean turn-on/turn-off in noisy vehicle environments. The SQJ459EP-T1_BE3 benefits from isolated drivers like the Si823Hx family when used in high-side configurations with floating ground references.
How does the PowerPAK SO-8L package of SQJ459EP-T1_BE3 improve thermal performance over standard SO-8?
The PowerPAK SO-8L package of SQJ459EP-T1_BE3 improves thermal performance by relocating the drain connection to an exposed copper pad on the bottom surface, reducing RthJC to 1.8 °C/W versus ~3.5 °C/W for standard SO-8. This allows direct thermal coupling to PCB copper planes or heatsinks, enabling 83 W power dissipation at TC = 25 °C-nearly double that of conventional packages. The SQJ459EP-T1_BE3 achieves this without increasing footprint, maintaining compatibility with automated assembly processes.
Is SQJ459EP-T1_BE3 suitable for reverse polarity protection circuits?
Yes, SQJ459EP-T1_BE3 is well-suited for reverse polarity protection due to its P-channel configuration, -60 V VDS rating, and low RDS(on). When placed in the high-side rail with gate tied to ground, it conducts only during correct polarity and blocks reverse voltage with minimal forward drop (~0.09 V at 5 A). Its AEC-Q101 qualification and -55 °C to +175 °C operating range make SQJ459EP-T1_BE3 ideal for automotive infotainment and ADAS modules requiring robust input protection.
What is the avalanche energy rating of SQJ459EP-T1_BE3 and how is it validated?
The SQJ459EP-T1_BE3 is rated for 80 mJ single-pulse avalanche energy (EAS) with L = 0.1 mH, verified per JEDEC JESD24-11. This rating is confirmed through 100 % unclamped inductive switching (UIS) testing on every production lot. The SQJ459EP-T1_BE3 uses trench silicon design and optimized cell layout to safely absorb transient energy from inductive loads like fuel injectors and ABS solenoids-critical for automotive functional safety compliance.
SQJ459EP-T1_BE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- 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):
- 60 V
- Current - Continuous Drain (Id) @ 25°C:
- 52A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 18mOhm @ 3.5A, 10V
- Vgs(th) (Max) @ Id:
- 2.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 108 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 4586 pF @ 30 V
- FET Feature:
- -
- Power Dissipation (Max):
- 83W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerPAK® SO-8
SQJ459EP-T1_BE3 FAQ
1.How can I place an order for SQJ459EP-T1_BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SQJ459EP-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 SQJ459EP-T1_BE3 reliable?
The price and inventory of SQJ459EP-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 SQJ459EP-T1_BE3 is usually 5 days.
3.What payment methods are accepted for SQJ459EP-T1_BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SQJ459EP-T1_BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SQJ459EP-T1_BE3?
SQJ459EP-T1_BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SQJ459EP-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 SQJ459EP-T1_BE3?
For technical support, including SQJ459EP-T1_BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SQJ459EP-T1_BE3 requirements.
6.How does Aetrix verify that SQJ459EP-T1_BE3 is sourced from the original manufacturer or authorized distributors?
All SQJ459EP-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 SQJ459EP-T1_BE3 meets industry standards.
7.What is the process for return or replacement of SQJ459EP-T1_BE3?
All SQJ459EP-T1_BE3 units undergo pre-shipment inspection (PSI). If there is an issue with SQJ459EP-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 SQJ459EP-T1_BE3 part is unused and in its original packaging.
Return procedure for SQJ459EP-T1_BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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