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Nexperia USA Inc. BUK9Y12-100E,115
- Part No.:
- BUK9Y12-100E,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK9Y12-100E,115.pdf
- Description:
- MOSFET N-CH 100V 85A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:7,117
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Product details
Overview
BUK9Y12-100E from Nexperia is an AEC-Q101-qualified N-channel logic-level MOSFET in LFPAK56 (SOT669) package, rated for 100 V VDS, 12 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, and 175 °C junction operation. It delivers 85 A continuous drain current at Tmb = 25 °C and supports ultra-high-performance power switching in automotive 12 V/24 V/48 V systems.
For engineers reviewing the BUK9Y12-100E datasheet, BUK9Y12-100E pinout, BUK9Y12-100E application, or BUK9Y12-100E equivalent, key selection criteria include its true logic-level gate (VGS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and thermal robustness in thermally demanding environments.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching with QGD = 24 nC and tf = 74 ns under standard test conditions. Its LFPAK56 package provides a low 0.63 K/W Rth(j-mb), enabling high-power density in space-constrained automotive modules.
The device features integrated source-drain diode with VSD = 0.81 V at IS = 25 A and Tj = 25 °C, and is characterized for non-repetitive avalanche energy EAS = 139 mJ at ID = 85 A, supporting robust fault handling in motor and solenoid control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V maximum drain-source voltage - supports full 48 V automotive bus transients without breakdown. |
| RDS(on) | 9.5–12 mΩ at VGS = 5 V, ID = 25 A, Tj = 25 °C - enables low conduction loss in high-current switching paths. |
| ID (continuous) | 85 A at Tmb = 25 °C - delivers high load drive capability with minimal heatsinking in PCB-mounted applications. |
| Ptot | 238 W at Tmb = 25 °C - reflects high thermal efficiency enabled by low Rth(j-mb) = 0.63 K/W. |
| VGS(th) | > 0.5 V at Tj = 175 °C - ensures reliable turn-on with standard 3.3 V/5 V logic drivers across full automotive temperature range. |
| EAS | 139 mJ unclamped avalanche energy - allows safe operation during inductive load switching events without external snubbers. |
| QGD | 24 nC gate-drain charge - determines Miller plateau duration and influences switching speed and gate drive loss. |
Pinout & Package
LFPAK56 (SOT669) is a plastic single-ended surface-mounted package with exposed mounting base connected to drain, optimized for high thermal and power cycling performance in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source terminals reduce bond wire inductance and improve current sharing in high-frequency PWM. |
| 4 | Gate (G) | Single gate input with low input capacitance (Ciss = 5980 pF typ) for efficient 5 V logic-level drive. |
| Mounting base (mb) | Drain (D) | Exposed copper base electrically connected to drain - serves as primary thermal path and high-current return node. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and humidity testing per JESD22-A101/A110. |
| Repetitive avalanche rating | Rated for repeated inductive switching stress without degradation - eliminates need for external clamping in transmission control. |
| 175 °C junction rating | Enables operation in engine bay or near powertrain components where ambient temperatures exceed 125 °C. |
| True logic-level gate | VGS(th) remains >0.5 V up to 175 °C - guarantees turn-on margin with standard microcontroller GPIOs even at max temperature. |
| Low Rth(j-mb) | 0.63 K/W thermal resistance - reduces junction-to-board temperature rise by ~40 % vs. standard SO-8 packages at same power dissipation. |
Applications
| Engine Control Unit (ECU) Solenoid Drive | Electric Power Steering (EPS) Motor Phase Switch |
|---|---|
|
Use Scenario: High-speed, high-duty-cycle actuation of fuel injector or turbocharger VGT solenoids in diesel/gasoline ECUs. IC Role / Device Role / Timing Role: Low-side switching element controlling solenoid coil current with precise PWM timing and fast turn-off. Use Value: 74 ns fall time and 139 mJ avalanche energy enable clean current interruption and eliminate need for external flyback diodes. |
Use Scenario: Half-bridge phase leg in 12 V/24 V EPS motor inverters requiring high peak current and thermal resilience. IC Role / Device Role / Timing Role: High-current N-channel switch in compact half-bridge layout with shared gate driver and thermal pad. Use Value: 85 A continuous current and 0.63 K/W Rth(j-mb) allow direct PCB copper pour cooling without heatsinks in tight EPS module envelopes. |
| 48 V Mild Hybrid Starter-Generator Control | Automotive HVAC Blower Motor Driver |
|
Use Scenario: High-efficiency bidirectional power switching in 48 V starter-generator inverters for stop-start and regenerative braking. IC Role / Device Role / Timing Role: Synchronous rectifier and active clamp switch operating at 10–20 kHz with low conduction and switching losses. Use Value: 9.5 mΩ RDS(on) at 5 V gate drive minimizes I²R loss at 200+ A peak currents, while 100 V rating covers 48 V bus transients. |
Use Scenario: PWM-controlled blower motor driver in cabin HVAC systems subject to wide ambient temperature swings (-40 °C to +105 °C). IC Role / Device Role / Timing Role: Low-side power switch interfacing directly with MCU GPIO and high-current motor winding. Use Value: Guaranteed VGS(th) > 0.5 V at 175 °C ensures consistent turn-on across full automotive temperature range without gate boost circuitry. |
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, 1.2 mΩ RDS(on) at 10 V, DFN5x6 package, no AEC-Q101 certification | Limited to 24 V systems; lacks automotive qualification and high-temp VGS(th) guarantee | Select only for cost-sensitive 24 V industrial designs where AEC-Q101 is not required. |
| IRF3205PBF | 55 V VDS, 8 mΩ RDS(on) at 10 V, TO-220 package, non-automotive grade | Lower voltage rating and larger footprint; no avalanche rating or high-temp gate threshold spec | Use only in legacy 12 V non-automotive applications with ample heatsinking and no transient immunity requirements. |
Compared with STL220N6F7 and IRF3205PBF, BUK9Y12-100E uniquely combines 100 V rating, AEC-Q101 qualification, true 5 V logic-level operation up to 175 °C, and LFPAK56 thermal performance-making it the only drop-in solution for next-gen 48 V automotive power stages.
Availability
BUK9Y12-100E is available at Aetrix Electronics and suitable for automotive power distribution, motor control, and solenoid actuation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BUK9Y12-100E 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.
This device belongs to Nexperia's LFPAK automotive MOSFET family, engineered specifically for high-power-density, thermally demanding automotive subsystems such as engine management, ADAS actuators, and 48 V mild hybrid systems.
FAQ
Is BUK9Y12-100E pin-compatible with standard SO-8 MOSFETs?
No. BUK9Y12-100E uses the LFPAK56 (SOT669) package with three source pins and an exposed drain mounting base - physically and electrically incompatible with SO-8 footprints. PCB layout must accommodate its 4.4 mm × 3.6 mm body and thermal pad connection to drain.
What is the maximum recommended gate resistor for 5 V MCU drive?
A 5 Ω external gate resistor is specified in the datasheet for switching characterization (tf, tr). For 5 V microcontroller drive, use 4.7–10 Ω to balance switching speed against ringing and EMI, especially when driving inductive loads like solenoids or motors.
Does BUK9Y12-100E require a gate pull-down resistor in automotive applications?
Yes. A 10 kΩ gate-to-source pull-down resistor is recommended to prevent unintended turn-on due to EMI or floating gate conditions in noisy automotive environments, particularly during power-up/down sequences or CAN bus activity.
Can BUK9Y12-100E be used in synchronous rectification topologies?
Yes - its low RDS(on) (9.5 mΩ typ), fast switching (ton ≈ 22 ns, toff ≈ 117 ns), and integrated source-drain diode (VSD = 0.81 V) make it suitable for synchronous rectification in 48 V DC-DC converters, provided gate drive timing avoids shoot-through.
BUK9Y12-100E,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- 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):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 85A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 5V
- Rds On (Max) @ Id, Vgs:
- 12mOhm @ 25A, 5V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 64 nC @ 5 V
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 7973 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 238W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK9Y12-100E,115 FAQ
1.How can I place an order for BUK9Y12-100E,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9Y12-100E,115 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 BUK9Y12-100E,115 reliable?
The price and inventory of BUK9Y12-100E,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9Y12-100E,115 is usually 5 days.
3.What payment methods are accepted for BUK9Y12-100E,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9Y12-100E,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9Y12-100E,115?
BUK9Y12-100E,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9Y12-100E,115 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 BUK9Y12-100E,115?
For technical support, including BUK9Y12-100E,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9Y12-100E,115 requirements.
6.How does Aetrix verify that BUK9Y12-100E,115 is sourced from the original manufacturer or authorized distributors?
All BUK9Y12-100E,115 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 BUK9Y12-100E,115 meets industry standards.
7.What is the process for return or replacement of BUK9Y12-100E,115?
All BUK9Y12-100E,115 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9Y12-100E,115, 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 BUK9Y12-100E,115 part is unused and in its original packaging.
Return procedure for BUK9Y12-100E,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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