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Nexperia USA Inc. BUK7Y15-100EX
- Part No.:
- BUK7Y15-100EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y15-100EX.pdf
- Description:
- MOSFET N-CH 100V 68A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:7,488
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Product details
Overview
BUK7Y15-100EX from Nexperia is a standard-level N-channel MOSFET in LFPAK56 (SOT669) package, rated for 100 V VDS, 15 mΩ RDS(on) at 10 V VGS and 25 °C, 175 °C junction temperature, and AEC-Q101 qualified for automotive power switching. It delivers 68 A continuous drain current at Tmb = 25 °C and supports ultra-high-performance motor, lamp, and solenoid control in 12 V/24 V/48 V systems.
For engineers reviewing the BUK7Y15-100EX datasheet, BUK7Y15-100EX pinout, BUK7Y15-100EX application, or BUK7Y15-100EX equivalent, key selection criteria include its true standard-level gate (VGS(th) > 1 V at 175 °C), repetitive avalanche rating, 0.77 K/W Rth(j-mb), and LFPAK56 thermal performance in thermally demanding automotive environments.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching with QGD = 17.7 nC and tf = 24 ns under specified conditions. Its gate threshold voltage remains functional up to 175 °C, enabling reliable operation in engine bay and transmission control modules without level-shifting circuitry.
The device integrates a robust intrinsic body diode (VSD = 0.82–1.2 V at 20 A, trr = 42 ns) and is rated for non-repetitive avalanche energy of 111 mJ, supporting fault-tolerant designs in high-side and low-side switching topologies where inductive load commutation occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V - Maximum drain-source blocking voltage compatible with 48 V automotive architectures and transient overvoltage tolerance. |
| RDS(on) | 10–15 mΩ @ VGS = 10 V, ID = 20 A, Tj = 25 °C - Enables <1.5 W conduction loss at 40 A, critical for thermally constrained PCB layouts. |
| ID (continuous) | 68 A @ Tmb = 25 °C - Supports high-current loads such as HVAC blowers and starter relays without external heatsinking. |
| Ptot | 195 W @ Tmb = 25 °C - High power handling enabled by low Rth(j-mb) = 0.77 K/W and copper-exposed mounting base. |
| QGD | 17.7 nC - Low gate-drain charge minimizes Miller-induced switching instability and enables clean turn-off in high-dV/dt environments. |
| VGS(th) | >1 V @ Tj = 175 °C - Ensures guaranteed turn-on with standard 5 V or 3.3 V microcontroller GPIOs across full automotive temperature range. |
| EAS | 111 mJ - Non-repetitive avalanche energy rating allows safe clamping of inductive kickback in solenoid and motor drive circuits. |
Pinout & Package
LFPAK56 (SOT669) is a surface-mount, copper-clip power package with exposed drain mounting base for superior thermal transfer. The 4-pin layout features triple-source terminals and a single gate, optimized for low-inductance, high-current PCB routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source connections reduce bond-wire inductance and improve current sharing; tied internally to source metallization. |
| 4 | Gate (G) | Single gate input with low Ciss = 2968–3958 pF; designed for direct drive from automotive MCUs or gate drivers without buffering. |
| Mounting Base | Drain (D) | Exposed copper drain pad soldered directly to PCB thermal pad; provides primary thermal path (Rth(j-mb) = 0.77 K/W) and low-inductance power return. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test requirements including HTOL, TC, HTRB, and UHAST-enables drop-in deployment in safety-critical ECUs. |
| Repetitive avalanche rated | Rated for repeated inductive switching events without degradation, eliminating need for external snubbers in transmission valve drivers. |
| 175 °C maximum junction temperature | Enables operation in under-hood locations (e.g., engine control, battery disconnect) without derating or thermal throttling. |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures compatibility with 3.3 V/5 V logic without gate boosters-reducing BOM count and layout complexity. |
| LFPAK56 thermal performance | 0.77 K/W Rth(j-mb) enables 3× higher power density vs. SO-8; eliminates need for discrete thermal vias or external heatsinks in space-constrained modules. |
Applications
| Engine Control Module (ECM) | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: Driving fuel injector solenoids and ignition coil primaries in gasoline/diesel engines. IC Role / Device Role / Timing Role: Low-side switch controlling high-current inductive loads with precise pulse-width modulation at up to 20 kHz. Use Value: Repetitive avalanche rating absorbs back-EMF without clamping diodes; 15 mΩ RDS(on) limits self-heating during extended idle operation. |
Use Scenario: Controlling torque assist motors and steering column lock actuators in 12 V/48 V hybrid EPS systems. IC Role / Device Role / Timing Role: High-efficiency H-bridge half-bridge switch delivering bidirectional 40–60 A peak current with <24 ns fall time. Use Value: LFPAK56's low Rth(j-mb) sustains 68 A continuous current without thermal shutdown; 175 °C rating matches EPS module ambient limits. |
| Automatic Transmission Control Unit (TCU) | 12 V/48 V DC-DC Converter Primary Switch |
|
Use Scenario: Actuating shift solenoids and pressure control valves in 8-/10-speed automatic transmissions. IC Role / Device Role / Timing Role: High-reliability, high-duty-cycle switching element operating continuously at 10–15 A with PWM frequencies up to 10 kHz. Use Value: AEC-Q101 qualification ensures lifetime reliability under vibration and thermal cycling; VGS(th) stability at 175 °C prevents unintended turn-off during hot soak. |
Use Scenario: Primary-side synchronous rectifier or high-side switch in isolated buck-boost converters for vehicle electrification subsystems. IC Role / Device Role / Timing Role: Fast-switching, low-loss power switch handling 100 V bus transients and 20–50 A average current in high-frequency (100–300 kHz) topologies. Use Value: QGD = 17.7 nC and Coss = 283–340 pF enable efficient zero-voltage switching (ZVS) transitions; 100 V rating covers 48 V system surge requirements. |
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 |
|---|---|---|---|
| STL220N10F7 | 100 V, 2.2 mΩ RDS(on) @ 10 V, but only 150 °C Tj(max); uses PowerFLAT 5x6 package with higher Rth(j-mb) = 1.2 K/W. | Better conduction efficiency at high current, but limited thermal headroom in sustained 175 °C ambient environments. | Select when lowest RDS(on) dominates and ambient stays ≤150 °C; avoid in under-hood ECM/TCU deployments. |
| IRF100P120 | 120 V, 10.5 mΩ RDS(on), TO-220FP package; not AEC-Q101 qualified; Rth(j-mb) ≈ 2.5 K/W. | Higher voltage margin but no automotive qualification; requires external heatsink and thermal interface material. | Acceptable for industrial 48 V systems where qualification isn't required; unsuitable for OEM automotive production due to missing AEC-Q101 and thermal limitations. |
Compared with STL220N10F7 and IRF100P120, BUK7Y15-100EX uniquely balances AEC-Q101 compliance, 175 °C operation, and LFPAK56 thermal efficiency-making it the only option qualified for direct integration into engine bay and transmission control modules without derating or supplemental cooling.
Availability
BUK7Y15-100EX is available at Aetrix Electronics and suitable for automotive engine control, electric power steering, and automatic transmission systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for BUK7Y15-100EX 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 essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
The BUK7Y series belongs to Nexperia's AEC-Q101-qualified standard-level MOSFET product line, engineered specifically for high-reliability, thermally demanding automotive power switching applications-including solenoid, motor, and lamp control in harsh under-hood environments.
FAQ
Is BUK7Y15-100EX suitable for high-side switching configurations?
Yes-its standard-level gate (VGS(th) > 1 V at 175 °C) and 100 V VDS rating support high-side use with appropriate gate driver biasing. However, the LFPAK56 mounting base is internally connected to drain, so PCB layout must isolate the thermal pad from ground planes when used in high-side topology.
What is the maximum allowable pulsed drain current for BUK7Y15-100EX?
The peak drain current is 274 A for pulses ≤10 µs at Tmb = 25 °C, as defined in the limiting values table. This rating assumes proper gate drive (VGS = 10 V), minimal external inductance, and adherence to the SOA curve in Figure 4 to avoid second breakdown.
Does BUK7Y15-100EX include an integrated ESD protection diode?
No-this MOSFET does not integrate ESD protection. Per the datasheet, gate leakage (IGSS) is specified at ±2 to 100 nA, and the device relies on external TVS or RC networks for gate protection in automotive harness-connected applications.
How does the RDS(on) change at elevated temperature?
RDS(on) increases with junction temperature: typical value is 41.5 mΩ at Tj = 175 °C and VGS = 10 V, ID = 20 A (per Table 7). The normalized factor in Figure 12 shows ~3.2× increase from 25 °C to 175 °C, consistent with silicon MOSFET behavior.
BUK7Y15-100EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SC-100, SOT-669
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 68A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 15mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 54.5 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3958 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 195W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y15-100EX FAQ
1.How can I place an order for BUK7Y15-100EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y15-100EX 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 BUK7Y15-100EX reliable?
The price and inventory of BUK7Y15-100EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y15-100EX is usually 5 days.
3.What payment methods are accepted for BUK7Y15-100EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y15-100EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y15-100EX?
BUK7Y15-100EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y15-100EX 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 BUK7Y15-100EX?
For technical support, including BUK7Y15-100EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y15-100EX requirements.
6.How does Aetrix verify that BUK7Y15-100EX is sourced from the original manufacturer or authorized distributors?
All BUK7Y15-100EX 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 BUK7Y15-100EX meets industry standards.
7.What is the process for return or replacement of BUK7Y15-100EX?
All BUK7Y15-100EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y15-100EX, 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 BUK7Y15-100EX part is unused and in its original packaging.
Return procedure for BUK7Y15-100EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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