My Inquiry
My Account
Nexperia USA Inc. BUK7Y25-80EX
- Part No.:
- BUK7Y25-80EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y25-80EX.pdf
- Description:
- MOSFET N-CH 80V 39A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:1,324
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BUK7Y25-80EX from Nexperia is an AEC-Q101 qualified N-channel standard-level MOSFET in LFPAK56 (SOT669) package, rated for 80 V VDS, 25 mΩ RDS(on) at 10 V VGS and 25 °C, and 175 °C junction temperature. It delivers 39 A continuous drain current at Tmb = 25 °C and supports repetitive avalanche operation - deployed in automotive transmission control, solenoid drivers, and 12–48 V power switching systems.
For engineers reviewing the BUK7Y25-80EX datasheet, BUK7Y25-80EX pinout, BUK7Y25-80EX application, or BUK7Y25-80EX equivalent, this device is selected for thermally demanding automotive power stages where standard gate drive compatibility, high avalanche ruggedness (43.6 mJ), and low thermal resistance (1.58 K/W j-mb) are critical design requirements.
Technical Context
This MOSFET uses TrenchMOS technology to achieve stable RDS(on) across temperature: 16.7 mΩ typ at 25 °C rising to 62.75 mΩ max at 175 °C. Its true standard-level gate has VGS(th) ≥ 1 V even at 175 °C, enabling reliable turn-on with 10 V gate drivers without level-shifting.
The LFPAK56 package integrates a thermally optimized mounting base directly connected to the drain, delivering 1.58 K/W junction-to-mounting-base thermal resistance and supporting high-power density layouts. Its 4-pin configuration (3× source, 1× gate, drain via mounting base) enables low-inductance source return paths and efficient PCB copper pour heat spreading.
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 bus. |
| RDS(on) | 16.7 mΩ typ @ 10 V VGS, 25 °C - Enables <1 W conduction loss at 8 A load; critical for efficiency in motor/solenoid drivers. |
| ID | 39 A @ Tmb = 25 °C - Continuous current rating defined at mounting base temperature, not ambient; requires direct thermal pad coupling. |
| EAS | 43.6 mJ non-repetitive avalanche energy - Confirmed unclamped single-pulse rating; protects against inductive switch-off transients in transmission actuators. |
| Rth(j-mb) | 1.58 K/W - Low junction-to-mounting-base thermal resistance enables >90% of die power to be extracted through PCB copper, reducing hotspot risk. |
| QGD | 8.2 nC - Gate-drain charge determines Miller plateau duration; enables predictable 17.5 ns td(off) with 5 Ω external gate resistor. |
| VGS(th) | ≥1 V @ Tj = 175 °C - Ensures guaranteed turn-on under worst-case hot conditions using standard 10 V logic-level drivers. |
Pinout & Package
LFPAK56 (SOT669) is a 4-lead surface-mount plastic package with exposed drain-connected mounting base. Its low-profile, high-copper-content construction delivers superior thermal and power cycling performance versus SO-8.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source | Three parallel source terminals reduce bond-wire inductance and improve current sharing; connect directly to low-impedance ground plane. |
| 4 | Gate | Single gate input; requires <5 Ω series resistance to damp ringing during fast switching in high-di/dt loads like solenoids. |
| Mounting Base | Drain | Exposed copper pad electrically and thermally connected to drain; must be soldered to ≥200 mm² 2-oz copper pour for rated power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use per stress test requirements including HTOL, TC, HTRB, and UHAST - no derating needed for passenger vehicle ECUs. |
| Repetitive avalanche rated | Rated for repeated unclamped inductive switching events up to 43.6 mJ; eliminates need for external snubbers in transmission valve drivers. |
| 175 °C maximum junction temperature | Enables operation in engine bay environments without thermal shutdown; RDS(on) remains within spec up to full 175 °C Tj. |
| Standard-level gate drive | VGS(th) ≥ 1 V at 175 °C ensures robust turn-on with 10 V microcontroller outputs - no gate driver IC required in cost-sensitive body control modules. |
| Low Rth(j-mb) | 1.58 K/W enables >75 W effective power handling on standard 4-layer PCBs with 40 mm × 40 mm 2-oz drain pad - reduces need for heatsinks. |
Applications
| Transmission Control Valve Driver | Solenoid Power Switch |
|---|---|
|
Use Scenario: High-current PWM switching of hydraulic solenoids in automatic transmission shift actuators, operating continuously at 125 °C underhood ambient. IC Role / Device Role / Timing Role: Main power switch controlling solenoid coil current; handles 25 A peak, 10 kHz PWM with <100 ns switching transitions. Use Value: 43.6 mJ avalanche rating absorbs energy from coil flyback without clamping diodes; 175 °C rating prevents thermal shutdown during sustained duty cycles. |
Use Scenario: On/off control of 24 V fuel injector solenoids in diesel common-rail systems, requiring fast turn-off to prevent dribble fueling. IC Role / Device Role / Timing Role: Low-side switch with 10.5 ns fall time and 17.5 ns td(off); driven by MCU GPIO with 5 Ω series gate resistor. Use Value: 8.2 nC QGD minimizes Miller-induced delay; 16.7 mΩ RDS(on) limits conduction loss to <4 W at 15 A, reducing thermal stress on PCB. |
| 12 V/48 V DC Motor Controller | Automotive Lighting Load Switch |
|
Use Scenario: Half-bridge high-side/low-side switching for brushless DC cooling fans in EV power electronics enclosures, exposed to 105 °C ambient. IC Role / Device Role / Timing Role: Low-side switch in synchronous rectification topology; conducts 30 A continuous with forced-air cooling. Use Value: 1.58 K/W Rth(j-mb) allows >90% of heat to exit via PCB copper; 39 A ID rating supports peak torque surges without current limiting. |
Use Scenario: Smart headlamp LED matrix power distribution, switching individual 48 V LED strings with diagnostic current sensing. IC Role / Device Role / Timing Role: Protected load switch with integrated current sense path; monitors 5–10 A per channel via source shunt. Use Value: Three parallel source pins enable accurate low-value shunt placement (<1 mΩ) without parasitic inductance; 25 mΩ RDS(on) tolerance ensures consistent brightness calibration. |
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 |
|---|---|---|---|
| STL220N6F7 | 60 V VDS, 1.2 mΩ RDS(on), 220 A ID, PowerFLAT 5x6 package; lower RDS(on) but lower voltage rating. | Not suitable for 48 V systems requiring 80 V blocking; better for 12 V high-current inverters only. | Select when ultra-low conduction loss dominates and bus voltage stays ≤40 V; verify avalanche capability is not required. |
| IRF1010E | 100 V VDS, 12 mΩ RDS(on), TO-220AB package; higher voltage margin but 3× higher Rth(j-case) (1.5 K/W vs 1.58 K/W j-mb). | Requires bolted heatsink for same power; unsuitable for space-constrained SMT automotive modules. | Choose only for legacy through-hole designs or prototyping; lacks AEC-Q101 qualification and LFPAK56 thermal advantages. |
Compared with STL220N6F7 and IRF1010E, BUK7Y25-80EX uniquely balances 80 V rating, AEC-Q101 compliance, SMT-compatible thermal performance, and standard-level gate drive - making it optimal for next-generation compact, high-reliability automotive power stages.
Availability
BUK7Y25-80EX is available at Aetrix Electronics and suitable for automotive transmission control, 48 V mild-hybrid power distribution, and engine management systems requiring stable component supply across extended product lifecycles.
Supply support for BUK7Y25-80EX 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.
The LFPAK56 MOSFET product line targets space-constrained, thermally aggressive automotive applications - engineered for drop-in replacement of older SO-8 and DPAK packages while delivering measurable improvements in power density and thermal robustness.
FAQ
Is BUK7Y25-80EX pin-compatible with standard SO-8 MOSFETs?
No. BUK7Y25-80EX uses the LFPAK56 (SOT669) footprint: 4 leads with 3 source pins and a drain-connected mounting base. Its pad layout differs from SO-8 - requiring dedicated land pattern per Figure 17 in the datasheet. Mechanical compatibility does not imply electrical or thermal equivalence.
What is the maximum recommended gate resistor value for 10 kHz PWM in solenoid control?
For 10 kHz PWM with minimal switching loss and overshoot, a 5 Ω external gate resistor is validated per datasheet Figure 14. Higher values (>10 Ω) increase td(off) and tf beyond 25 ns, risking shoot-through in half-bridge configurations; lower values (<2 Ω) require careful layout to avoid gate oscillation.
Does BUK7Y25-80EX require a gate driver IC in automotive body control modules?
No. Its standard-level gate (VGS(th) ≥ 1 V at 175 °C and 10 V logic-compatible threshold) allows direct drive from 10 V MCU GPIOs. However, a gate driver is recommended for >50 kHz switching or when minimizing Miller-induced turn-on during high dv/dt events.
How is avalanche energy measured, and why is 43.6 mJ significant for transmission valves?
EAS = 43.6 mJ is measured under unclamped inductive switching (UIS) with ID = 39 A, Vsup ≤ 80 V, RGS = 50 Ω, and Tj(init) = 25 °C. This rating ensures safe absorption of flyback energy from 50 mH solenoid coils switched at 100 Hz - eliminating external TVS or snubber components in transmission valve circuits.
BUK7Y25-80EX 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:
- 39A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 25mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 25.9 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1800 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 95W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y25-80EX FAQ
1.How can I place an order for BUK7Y25-80EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y25-80EX 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 BUK7Y25-80EX reliable?
The price and inventory of BUK7Y25-80EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y25-80EX is usually 5 days.
3.What payment methods are accepted for BUK7Y25-80EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y25-80EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y25-80EX?
BUK7Y25-80EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y25-80EX 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 BUK7Y25-80EX?
For technical support, including BUK7Y25-80EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y25-80EX requirements.
6.How does Aetrix verify that BUK7Y25-80EX is sourced from the original manufacturer or authorized distributors?
All BUK7Y25-80EX 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 BUK7Y25-80EX meets industry standards.
7.What is the process for return or replacement of BUK7Y25-80EX?
All BUK7Y25-80EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y25-80EX, 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 BUK7Y25-80EX part is unused and in its original packaging.
Return procedure for BUK7Y25-80EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUK7Y25-80EX Tags
-
BSZ180P03NS3EGATMA1
Infineon Technologies
-
SIRA14DP-T1-GE3
Vishay Siliconix
-
AO4419
Alpha & Omega Semiconductor Inc.
-
SISA14BDN-T1-GE3
Vishay Siliconix
-
PSMN9R5-30YLC,115
Nexperia USA Inc.
-
BUK9Y21-40E,115
Nexperia USA Inc.
-
RTQ035N03HZGTR
Rohm Semiconductor
-
FDMS7680
onsemi
-
RQ3E180BNTB
Rohm Semiconductor
-
STL6N2VH5
STMicroelectronics
-
DMPH4029LFGQ-7
Diodes Incorporated
-
DMT6015LSS-13
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
