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Nexperia USA Inc. BUK7Y12-100EX
- Part No.:
- BUK7Y12-100EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y12-100EX.pdf
- Description:
- MOSFET N-CH 100V 85A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:3,677
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Product details
Overview
BUK7Y12-100EX from Nexperia is an AEC-Q101 qualified N-channel standard-level MOSFET in LFPAK56 (SOT669) package, rated for 100 V drain-source voltage, 12 mΩ RDS(on) at 10 VGS/25 °C, and 85 A continuous drain current at Tmb = 25 °C. It serves as a high-reliability power switch in automotive transmission control and solenoid drivers where thermal robustness up to 175 °C junction temperature and repetitive avalanche capability are critical.
For engineers reviewing the BUK7Y12-100EX datasheet, BUK7Y12-100EX pinout, BUK7Y12-100EX application, or BUK7Y12-100EX equivalent, this page delivers verified electrical parameters, LFPAK56 terminal mapping, automotive-grade thermal performance data, and real-world switching use cases - all aligned with Nexperia's official 2013 product data sheet.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance while maintaining stable gate threshold voltage (>1 V at 175 °C) and true standard-level gate drive compatibility. Its LFPAK56 package integrates a thermally optimized mounting base directly connected to the drain, enabling 0.63 K/W junction-to-mounting-base thermal resistance.
The device supports unclamped inductive switching with 139 mJ single-pulse avalanche energy (ID = 85 A, Vsup ≤ 100 V), and features fast switching dynamics: 12 ns turn-on delay, 66 ns turn-off delay, and 21 nC gate-drain charge under 10 VGS/25 A/80 VDS conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V maximum - supports 48 V automotive systems with margin against load dump transients |
| RDS(on) | 8.1–12 mΩ at VGS = 10 V, ID = 25 A, Tj = 25 °C - enables low conduction loss in high-current motor/solenoid drivers |
| ID (continuous) | 85 A at Tmb = 25 °C - delivers high power density when mounted on copper PCB areas or heatsinks |
| Ptot | 238 W at Tmb = 25 °C - reflects high thermal efficiency of LFPAK56's exposed drain pad |
| Rth(j-mb) | 0.63 K/W - allows direct thermal coupling to chassis or heatsink without intermediate interface materials |
| QGD | 21 nC - determines Miller plateau duration during hard-switching, critical for gate driver sizing |
| EAS | 139 mJ (unclamped, single-pulse) - validates ruggedness in inductive load switching without external snubbers |
Pinout & Package
LFPAK56 (SOT669) is a surface-mount plastic package with 4 leads and an exposed metal mounting base (drain-connected). Its footprint matches Power-SO8 but offers superior thermal and power handling via direct die-to-base thermal path.
| 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-di/dt applications |
| 4 | Gate (G) | Single gate input with 3 V typical VGS(th); compatible with 5 V and 12 V microcontroller outputs |
| Mounting Base (mb) | Drain (D) | Exposed copper pad electrically and thermally connected to drain - must be soldered to PCB copper pour for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per JESD47 |
| Repetitive avalanche rating | Enables reliable operation in unclamped inductive switching (e.g., transmission solenoids) without derating |
| 175 °C maximum junction temperature | Permits operation in engine bay locations without forced cooling or oversized heatsinks |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures predictable turn-on even at extreme temperatures |
| Low QGD/QG ratio | 21 nC / 68 nC ≈ 0.31 - improves switching efficiency and reduces risk of false turn-on during high dv/dt events |
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: Main power switch controlling 12–48 V solenoid coils with 5–20 A peak current and 100 ms pulse width. Use Value: 139 mJ avalanche energy absorbs inductive kickback without snubber components; 175 °C rating sustains operation near hot gearbox housing. |
Use Scenario: Low-side driver for fuel injector or EGR valve solenoids in diesel powertrains. IC Role / Device Role / Timing Role: Fast-switching N-channel switch with <66 ns turn-off delay to support precise 10–500 µs pulse-width modulation. Use Value: 21 nC QGD minimizes Miller-induced shoot-through risk during high-frequency PWM; 8.1 mΩ RDS(on) limits resistive heating at 15 A DC. |
| Engine Cooling Fan Controller | 12 V/24 V Motor Starter Relay Replacement |
|
Use Scenario: PWM-controlled brushless fan motor driver in radiator cooling modules. IC Role / Device Role / Timing Role: Half-bridge high-side switch operating at 20 kHz with 85 A peak current during startup surge. Use Value: 0.63 K/W Rth(j-mb) enables direct PCB copper thermal management - eliminates need for bolted heatsinks in space-constrained modules. |
Use Scenario: Solid-state replacement for electromechanical starter relays in commercial vehicle battery systems. IC Role / Device Role / Timing Role: High-current main power switch handling 60 A continuous and 339 A pulsed cranking loads. Use Value: 33.2 mΩ RDS(on) at 175 °C ensures stable on-resistance across full operating temperature range; LFPAK56 mounting base withstands vibration-induced mechanical stress. |
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), 200 A ID, H2PAK-2 package, 175 °C rated | Higher current capacity and lower RDS(on), but larger footprint and higher gate charge (120 nC) | Preferred for high-power fans or dual-solenoid drivers requiring >100 A capability and board space for larger thermal pad |
| IRF1404ZPBF | 40 V, 20 mΩ RDS(on), TO-220AB package, non-AEC-Q101, 175 °C rated | Lower voltage rating and no automotive qualification; lacks repetitive avalanche rating | Suitable only for non-safety-critical 12 V industrial controls where AEC-Q101 compliance is not required |
Compared with STL220N10F7, BUK7Y12-100EX trades raw current density for compact LFPAK56 integration and lower gate drive demand; versus IRF1404ZPBF, it adds AEC-Q101 validation, avalanche ruggedness, and tighter RDS(on) tolerance - essential for production automotive ECUs.
Availability
BUK7Y12-100EX is available at Aetrix Electronics and suitable for automotive transmission control, solenoid actuation, and engine cooling fan regulation requiring stable component supply across extended temperature ranges and long lifecycle commitments.
Supply support for BUK7Y12-100EX 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection solutions.
BUK7Y12-100EX belongs to Nexperia's LFPAK automotive MOSFET family, engineered specifically for thermally demanding, safety-relevant power switching in 12 V–48 V vehicle subsystems - emphasizing ruggedness, predictability, and AEC-Q101 compliance over generic switching performance.
FAQ
Is BUK7Y12-100EX pin-compatible with other LFPAK56 MOSFETs?
Yes - BUK7Y12-100EX uses the standard SOT669 footprint with pins 1–3 as source, pin 4 as gate, and the mounting base as drain. All Nexperia LFPAK56 automotive MOSFETs share identical mechanical dimensions and terminal assignments, enabling drop-in replacement within the same voltage/current class.
What is the maximum allowable PCB copper area for thermal performance?
The datasheet specifies optimal thermal performance when the mounting base is soldered to ≥ 100 mm² of 2 oz copper on the top layer, connected via ≥ 6 thermal vias (0.3 mm diameter) to internal or bottom-layer ground planes. This configuration achieves the rated 0.63 K/W Rth(j-mb).
Does BUK7Y12-100EX require a gate resistor for automotive EMI compliance?
Yes - a 5 Ω external gate resistor is recommended (per Fig. 4 test condition) to limit di/dt during switching and suppress high-frequency ringing. This value balances EMI reduction with acceptable 66 ns turn-off delay and avoids excessive gate drive power dissipation in 12 V systems.
Can BUK7Y12-100EX replace older BUK7Y12-100E parts in existing designs?
Yes - BUK7Y12-100EX is a direct revision of BUK7Y12-100E with identical electrical specifications, package, pinout, and qualification status. The 'X' suffix denotes updated wafer fabrication process and enhanced traceability; no layout or schematic changes are needed for migration.
BUK7Y12-100EX 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):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 85A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 12mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 68 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5067 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
BUK7Y12-100EX FAQ
1.How can I place an order for BUK7Y12-100EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y12-100EX 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 BUK7Y12-100EX reliable?
The price and inventory of BUK7Y12-100EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y12-100EX is usually 5 days.
3.What payment methods are accepted for BUK7Y12-100EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y12-100EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y12-100EX?
BUK7Y12-100EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y12-100EX 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 BUK7Y12-100EX?
For technical support, including BUK7Y12-100EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y12-100EX requirements.
6.How does Aetrix verify that BUK7Y12-100EX is sourced from the original manufacturer or authorized distributors?
All BUK7Y12-100EX 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 BUK7Y12-100EX meets industry standards.
7.What is the process for return or replacement of BUK7Y12-100EX?
All BUK7Y12-100EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y12-100EX, 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 BUK7Y12-100EX part is unused and in its original packaging.
Return procedure for BUK7Y12-100EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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