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Nexperia USA Inc. BUK7Y98-80EX
- Part No.:
- BUK7Y98-80EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y98-80EX.pdf
- Description:
- MOSFET N-CH 80V 12.3A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:4,114
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Product details
Overview
BUK7Y98-80EX from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS power MOSFET in LFPAK56 (SOT669) package, rated for 80 V VDS, 98 mΩ RDS(on) at 10 V VGS and 25 °C, and 175 °C junction operation. It delivers 12.3 A continuous drain current at Tmb = 25 °C and supports repetitive avalanche events - deployed in automotive transmission control, solenoid drivers, and 12–48 V power switching.
For engineers reviewing the BUK7Y98-80EX datasheet, BUK7Y98-80EX pinout, BUK7Y98-80EX application, or BUK7Y98-80EX equivalent, key selection criteria include its standard-level gate drive (VGS(th) > 1 V at 175 °C), 4.03 K/W junction-to-mounting-base thermal resistance, and true automotive-grade ruggedness per ISO/TS 16949-aligned qualification.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low on-resistance with high thermal robustness. Its gate threshold voltage remains functional up to 175 °C, enabling reliable operation in under-hood environments without gate driver derating.
The device features a monolithic source-drain diode with 18.1 ns reverse recovery time and 15.8 nC recovered charge, supporting fast-switching DC-DC and motor commutation. Mounting base (drain-connected) enables direct thermal coupling to PCB copper or heatsinks, reducing system thermal impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 80 V - Maximum drain-source blocking voltage; supports 48 V automotive systems with 1.67× safety margin over nominal rail. |
| RDS(on) | 70–98 mΩ @ VGS = 10 V, ID = 5 A, Tj = 25 °C - Enables <1 W conduction loss at 5 A, critical for thermally constrained modules. |
| ID (continuous) | 12.3 A @ Tmb = 25 °C - Sustains full-load current in compact surface-mount layouts when mounted on ≥2 oz Cu with thermal vias. |
| EAS | 9.02 mJ - Non-repetitive avalanche energy rating ensures single-event fault tolerance in inductive load switching. |
| Rth(j-mb) | 4.03 K/W - Low thermal resistance from junction to mounting base allows efficient heat transfer to PCB, reducing need for external heatsinks. |
| QGD | 3 nC - Gate-drain charge determines Miller plateau duration; enables clean turn-off in high-dV/dt environments like motor phase legs. |
| VGS(th) | >1 V @ Tj = 175 °C - Ensures guaranteed turn-on with standard 5 V or 3.3 V logic-level gate drivers even at peak temperature. |
Pinout & Package
LFPAK56 (SOT669) is a 4-lead plastic surface-mount package with exposed mounting base (drain-connected) for enhanced thermal performance. The footprint matches Power-SO8 but offers lower Rth(j-mb) and higher power density than SO-8.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source terminals reduce bond wire inductance and improve current sharing; directly connects to PCB ground plane. |
| 4 | Gate (G) | Single gate input with 8.5 nC total gate charge; compatible with standard MOSFET drivers without requiring gate boosters. |
| Mounting Base (mb) | Drain (D) | Exposed copper pad electrically connected to drain; serves as primary thermal path and high-current return node. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, UHAST, and ESD - eliminates requalification effort for Tier 1 designs. |
| Repetitive avalanche rated | Rated for repeated unclamped inductive switching events without degradation - enables simplified protection circuitry in solenoid and relay drivers. |
| 175 °C maximum junction temperature | Supports operation in engine bay or transmission control units where ambient exceeds 125 °C - avoids thermal shutdown in sustained load conditions. |
| Standard-level gate drive | VGS(th) > 1 V at 175 °C ensures compatibility with 3.3 V/5 V microcontrollers and ASICs without level-shifting or gate boosting. |
| Low QGD/QG ratio | 3 nC / 8.5 nC ≈ 0.35 - improves immunity to false turn-on during high dV/dt commutation, critical in half-bridge motor control. |
Applications
| Transmission Control Module | Solenoid Driver Unit |
|---|---|
|
Use Scenario: High-side switching of hydraulic pressure control solenoids in automatic transmissions. IC Role / Device Role / Timing Role: Power switch controlling 12–24 V, 2–5 A solenoid coils with 10–100 ms pulse widths. Use Value: Repetitive avalanche rating absorbs back-EMF without snubbers; 175 °C rating ensures reliability across oil-temperature cycles. |
Use Scenario: Low-side driving of fuel injector solenoids in gasoline direct injection systems. IC Role / Device Role / Timing Role: Fast-turning N-channel switch with <10 ns fall time and 18.1 ns diode trr for precise fuel metering. Use Value: Low RDS(on) minimizes I²R heating during extended dwell times; QGD = 3 nC enables clean turn-off at 10 kHz PWM. |
| 48 V Mild Hybrid DC-DC Converter | Electric Power Steering (EPS) Motor Phase Leg |
|
Use Scenario: Synchronous rectification in 48 V–12 V bidirectional buck-boost converters. IC Role / Device Role / Timing Role: Low-side FET in synchronous topology operating at 200–500 kHz with 10 V gate drive. Use Value: Coss = 56–67 pF and Crss = 45–62 pF minimize switching losses; Rth(j-mb) = 4.03 K/W sustains efficiency at full load. |
Use Scenario: Half-bridge phase leg in 3-phase EPS motor inverter (12–48 V bus). IC Role / Device Role / Timing Role: High-frequency switching element handling 10–20 A peak phase current with <100 ns dead-time constraints. Use Value: 98 mΩ RDS(on) limits conduction loss below 4 W at 20 A; trr = 18.1 ns prevents shoot-through during commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N6F7 | 60 V VDS, 0.95 mΩ RDS(on), PowerFLAT 5x6 package, 175 °C rated | Limited to ≤60 V systems; superior RDS(on) but lower voltage margin for 48 V transients | Select when board space is constrained and 60 V rating suffices; verify transient clamping for ISO 7637-2 pulses. |
| IRF3205PBF | 55 V VDS, 8.0 mΩ RDS(on), TO-220 package, not AEC-Q101 qualified | Requires external qualification; lacks automotive reliability data and thermal performance of LFPAK56 | Only for non-automotive industrial prototypes; avoid in production automotive designs due to missing AEC-Q101 validation. |
Compared with STL220N6F7 and IRF3205PBF, BUK7Y98-80EX uniquely balances 80 V capability, AEC-Q101 compliance, and LFPAK56 thermal efficiency - making it the only option qualified for 48 V mild hybrid and transmission control without derating or requalification.
Availability
BUK7Y98-80EX is available at Aetrix Electronics and suitable for automotive transmission control, 48 V DC-DC conversion, and electric power steering systems requiring stable component supply across multi-year vehicle production cycles.
Supply support for BUK7Y98-80EX 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection.
BUK7Y98-80EX belongs to Nexperia's LFPAK automotive MOSFET product line, engineered specifically for under-hood power switching where thermal resilience, avalanche robustness, and AEC-Q101 compliance are mandatory.
FAQ
Is BUK7Y98-80EX pin-compatible with other LFPAK56 MOSFETs?
Yes - BUK7Y98-80EX uses the standard SOT669 footprint with identical 1–3 source, 4 gate, and mounting base pinout. It shares mechanical and solder-reflow compatibility with all Nexperia LFPAK56 N-channel MOSFETs, enabling drop-in replacement within the same voltage and RDS(on) class.
What is the maximum recommended PCB copper area for optimal thermal performance?
For rated 12.3 A continuous current, Nexperia recommends ≥250 mm² of 2 oz copper connected to the mounting base via ≥9 thermal vias (0.3 mm diameter, 0.6 mm pitch). This achieves near-datasheet Rth(j-mb) = 4.03 K/W and maintains Tj < 150 °C at 25 °C ambient.
Does BUK7Y98-80EX require a gate resistor for automotive EMI compliance?
Yes - a 10 Ω series gate resistor is recommended to limit dI/dt and suppress ringing in 12–48 V automotive harnesses. This value balances switching speed (td(off) ≈ 7.3 ns) and conducted EMI reduction per CISPR 25 Class 5 requirements without compromising thermal performance.
Can BUK7Y98-80EX be used in parallel configurations?
Yes - its positive RDS(on) temperature coefficient (normalized factor rises with Tj) enables stable current sharing. Parallel operation requires matched layout symmetry, individual gate resistors, and thermal coupling to ensure <5 °C inter-device ΔT; verified up to 3 devices in Nexperia application note AN11152.
BUK7Y98-80EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SC-100, SOT-669
- 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:
- 12.3A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 98mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 8.5 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 498 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 37W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y98-80EX FAQ
1.How can I place an order for BUK7Y98-80EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y98-80EX 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 BUK7Y98-80EX reliable?
The price and inventory of BUK7Y98-80EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y98-80EX is usually 5 days.
3.What payment methods are accepted for BUK7Y98-80EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y98-80EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y98-80EX?
BUK7Y98-80EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y98-80EX 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 BUK7Y98-80EX?
For technical support, including BUK7Y98-80EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y98-80EX requirements.
6.How does Aetrix verify that BUK7Y98-80EX is sourced from the original manufacturer or authorized distributors?
All BUK7Y98-80EX 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 BUK7Y98-80EX meets industry standards.
7.What is the process for return or replacement of BUK7Y98-80EX?
All BUK7Y98-80EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y98-80EX, 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 BUK7Y98-80EX part is unused and in its original packaging.
Return procedure for BUK7Y98-80EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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