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Nexperia USA Inc. BUK7Y20-30B,115
- Part No.:
- BUK7Y20-30B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y20-30B,115.pdf
- Description:
- NEXPERIA BUK7Y20 - N-CHANNEL TRE
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
BUK7Y20-30B from Nexperia is a standard-level N-channel TrenchMOS FET in LFPAK (SOT669) package, rated for 30 V VDS, 39.5 A continuous drain current at Tmb = 25 °C, and 175 °C junction temperature. It delivers 16 mΩ typical RDS(on) at VGS = 10 V and ID = 20 A, and is AEC-Q101 qualified for automotive 12 V load switching applications including solenoids, lamps, and motors.
For engineers reviewing the BUK7Y20-30B datasheet, BUK7Y20-30B pinout, BUK7Y20-30B application, or BUK7Y20-30B equivalent, this device is selected for thermally demanding automotive power switching where gate drive compatibility with standard 10 V logic, avalanche ruggedness (45 mJ), and low thermal resistance (2.53 K/W j-mb) are critical design requirements.
Technical Context
This MOSFET uses Nexperia's High-Performance Automotive (HPA) TrenchMOS technology to achieve stable RDS(on) across -55 °C to 175 °C, with VGS(th) tightly specified between 2 V and 4 V at 25 °C. Its gate charge profile (QG(tot) = 11.2 nC, QGD = 3.84 nC) supports fast, controlled switching in 12 V systems with minimal Miller-induced oscillation.
The device integrates a robust intrinsic body diode (VSD = 0.85 V at IS = 20 A, trr = 28 ns) and is characterized for unclamped inductive switching, enabling reliable operation in relay replacement and motor commutation without external freewheeling diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V maximum - defines safe blocking capability in 12 V automotive systems with load dump transients. |
| ID (continuous) | 39.5 A at Tmb = 25 °C - enables high-current switching without external heatsinking in compact layouts. |
| RDS(on) | 16 mΩ typ @ VGS = 10 V, ID = 20 A, Tj = 25 °C - minimizes conduction loss and self-heating during sustained load operation. |
| EAS | 45 mJ non-repetitive avalanche energy - supports robustness against inductive kickback in solenoid and motor drive circuits. |
| Rth(j-mb) | 2.53 K/W - enables efficient heat transfer to PCB copper or heatsink, critical for thermal reliability in sealed enclosures. |
| QG(tot) | 11.2 nC - determines gate driver current requirement and switching speed in PWM-controlled loads. |
| tr/tf | 18 ns rise / 10 ns fall - ensures fast edge control to reduce switching losses and EMI in high-frequency switching. |
Pinout & Package
Package: LFPAK (SOT669), plastic single-ended surface-mounted package with exposed mounting base connected to drain for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 - S | Source | Three parallel source terminals reduce bond wire inductance and improve current sharing in high-di/dt applications. |
| 4 - G | Gate | Single gate input optimized for standard 10 V logic-level drive; low QGD (3.84 nC) suppresses Miller turn-on risk. |
| Mounting Base - D | Drain | Exposed copper pad electrically and thermally connected to drain - serves as primary heat path and high-current return node. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive safety-critical systems per stress test requirements, including temperature cycling and HTRB. |
| 175 °C junction rating | Enables operation in under-hood environments without derating, supporting extended lifetime in high-ambient conditions. |
| Standard-level gate drive | Operates fully enhanced with 10 V gate voltage - compatible with common microcontroller GPIOs and discrete driver ICs. |
| Low RDS(on) × QG figure of merit | 16 mΩ × 11.2 nC = 179 mΩ·nC - balances conduction and switching losses for optimal efficiency in 10–100 kHz PWM loads. |
| Integrated avalanche ruggedness | 45 mJ unclamped EAS allows direct replacement of mechanical relays without snubber networks in inductive load circuits. |
Applications
| Automotive Lamp Control | 12 V Solenoid Driver |
|---|---|
|
Use Scenario: Switching halogen and LED headlamps, fog lamps, and interior lighting in modern vehicle body control modules. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling up to 39.5 A lamp loads with PWM dimming capability. Use Value: Low RDS(on) minimizes voltage drop and heat generation during long-duration illumination, while 175 °C rating ensures reliability near engine compartments. |
Use Scenario: Driving fuel injectors, door lock actuators, HVAC flaps, and transmission shift solenoids in 12 V chassis systems. IC Role / Device Role / Timing Role: Fast-switching power stage handling repetitive inductive turn-off transients up to 158 A peak current. Use Value: 45 mJ avalanche energy rating eliminates need for external clamping diodes, reducing BOM count and PCB area in space-constrained ECUs. |
| Motor Starter Circuit | Body Control Module Load Switch |
|
Use Scenario: Controlling small DC motors for power windows, sunroofs, and seat adjusters in passenger vehicles. IC Role / Device Role / Timing Role: Bidirectional current-handling switch (via external H-bridge configuration) with integrated body diode for freewheeling. Use Value: 28 ns reverse recovery time and 0.85 V forward voltage enable efficient commutation with minimal power loss and EMI during direction reversal. |
Use Scenario: Managing auxiliary 12 V loads such as USB chargers, infotainment peripherals, and sensor power rails in centralized body domain controllers. IC Role / Device Role / Timing Role: Protected load switch with overcurrent and thermal foldback behavior enabled by RDS(on) sensing and junction temperature tracking. Use Value: Thermal resistance of 2.53 K/W allows accurate die temperature estimation via RDS(on) monitoring, enabling predictive fault shutdown before thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N3LLH6 | 30 V, 220 A pulsed, RDS(on) = 1.6 mΩ @ 10 V - significantly lower on-resistance but larger DFN5x6 package and higher QG (32 nC). | Better suited for high-efficiency, high-current motor inverters; less optimal for space-constrained BCU designs due to footprint and gate drive demand. | Select when peak current >100 A and thermal budget permits larger package; avoid if board space or MCU drive strength is limited. |
| IRL8721PBF | 30 V, 76 A, RDS(on) = 11 mΩ @ 10 V - lower RDS(on) but not AEC-Q101 qualified; TO-220AB package with higher Rth(j-c). | Acceptable for industrial 12 V switching but unsuitable for automotive production due to missing qualification and thermal limitations. | Use only in non-automotive prototypes or cost-sensitive industrial controls; not recommended for OEM automotive programs. |
Compared with STL220N3LLH6 and IRL8721PBF, BUK7Y20-30B uniquely balances AEC-Q101 compliance, LFPAK thermal performance, and gate-drive compatibility in a compact footprint-making it the preferred choice for volume automotive body electronics where qualification, size, and drive simplicity are jointly constrained.
Availability
BUK7Y20-30B is available at Aetrix Electronics and suitable for automotive lamp control, 12 V solenoid actuation, and body control module load switching requiring stable component supply and full AEC-Q101 traceability.
Supply support for BUK7Y20-30B 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 logic, discrete, and MOSFET solutions, with leadership in automotive-grade components.
BUK7Y20-30B belongs to Nexperia's High-Performance Automotive (HPA) TrenchMOS product line, engineered specifically for robust, thermally efficient power switching in 12 V automotive subsystems.
FAQ
Is BUK7Y20-30B suitable for high-side switching configurations?
Yes - its standard-level gate threshold (2–4 V) and 30 V VDS rating support high-side use with appropriate gate driver biasing (e.g., bootstrap or charge pump). The mounting base is drain-connected, so PCB layout must isolate the base pad from ground when used in high-side topology.
What is the maximum allowable mounting base temperature for continuous operation?
The datasheet specifies continuous ID derating begins above Tmb = 25 °C, with 28 A maximum at Tmb = 100 °C. For uninterrupted 39.5 A operation, Tmb must be maintained ≤25 °C via adequate copper pour or heatsinking per Figure 1.
Does BUK7Y20-30B require an external gate resistor for stability?
A gate resistor (typically 10 Ω) is recommended per Figure 14 test conditions to control dV/dt and prevent oscillation. The device's low QGD/QGS ratio reduces Miller risk, but layout parasitics in high-di/dt applications still necessitate controlled gate drive impedance.
Can the source terminals (pins 1–3) be used independently?
No - pins 1, 2, and 3 are internally shorted to a common source node. They must be connected together on the PCB to maintain current-sharing balance and minimize inductance; splitting them compromises thermal and electrical performance per the SOT669 construction.
BUK7Y20-30B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SC-100, SOT-669
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 39.5A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 20mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 11.2 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 688 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 59W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y20-30B,115 FAQ
1.How can I place an order for BUK7Y20-30B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y20-30B,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 BUK7Y20-30B,115 reliable?
The price and inventory of BUK7Y20-30B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y20-30B,115 is usually 5 days.
3.What payment methods are accepted for BUK7Y20-30B,115?
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4.How is shipping managed for BUK7Y20-30B,115?
BUK7Y20-30B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y20-30B,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 BUK7Y20-30B,115?
For technical support, including BUK7Y20-30B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y20-30B,115 requirements.
6.How does Aetrix verify that BUK7Y20-30B,115 is sourced from the original manufacturer or authorized distributors?
All BUK7Y20-30B,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 BUK7Y20-30B,115 meets industry standards.
7.What is the process for return or replacement of BUK7Y20-30B,115?
All BUK7Y20-30B,115 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y20-30B,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 BUK7Y20-30B,115 part is unused and in its original packaging.
Return procedure for BUK7Y20-30B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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