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NXP Semiconductors BUK9523-75A,127
- Part No.:
- BUK9523-75A,127
- Manufacturer:
- NXP Semiconductors
- Category:
- FETs, MOSFETs
- Package:
- TO-220-3
- Datasheet:
-
BUK9523-75A,127.pdf
- Description:
- MOSFET N-CH 75V 53A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,867
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Product details
Overview
BUK9523-75A from NXP Semiconductors is a logic-level N-channel TrenchMOS FET in TO-220AB (SOT78A) package, rated for 75 V drain-source voltage, 53 A continuous drain current at 25 °C mounting base temperature, and 138 W total power dissipation. It delivers 17–23 mΩ RDS(on) at VGS = 10 V and ID = 25 A, operates up to 175 °C junction temperature, and is AEC-Q101 qualified for automotive power switching of 12 V/24 V loads including motors and solenoids.
For engineers reviewing the BUK9523-75A datasheet, BUK9523-75A pinout, BUK9523-75A application, or BUK9523-75A equivalent, key selection criteria include its logic-level gate drive compatibility (VGS(th) = 1.0–2.0 V), low on-resistance at 4.5 V gate drive, avalanche ruggedness (120 mJ), thermal resistance to mounting base (1.1 K/W), and automotive qualification status.
Technical Context
This device uses TrenchMOS technology to achieve low conduction losses and stable performance across wide temperature ranges. Its gate threshold voltage (1.0–2.0 V typ.) enables direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting circuitry.
The integrated source-drain diode supports freewheeling in inductive load applications, with VSD = 0.85–1.2 V at IS = 25 A and reverse recovery time (trr) = 49 ns under specified conditions. Its safe operating area (SOA) supports pulsed peak drain currents up to 213 A for ≤10 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 75 V maximum - supports 42 V automotive systems with margin against transients. |
| ID (continuous) | 53 A at Tmb = 25 °C - enables high-current switching in engine control and body electronics. |
| RDS(on) | 17–22 mΩ at VGS = 10 V, ID = 25 A, Tj = 25 °C - minimizes conduction loss and heat generation. |
| Tj max | 175 °C - allows operation in thermally demanding under-hood environments. |
| Avalanche energy EDS(AL)S | 120 mJ unclamped - provides robustness against inductive switching surges without external snubbers. |
| Rth(j-mb) | 1.1 K/W - enables efficient heatsink coupling for high-power dissipation in compact layouts. |
| VGS(th) | 1.0–2.0 V at ID = 1 mA - ensures reliable turn-on with standard logic-level drivers. |
Pinout & Package
Package: TO-220AB (SOT78A), plastic single-ended package with heatsink-mounted mounting base connected internally to drain terminal. Mounting base serves as primary thermal path and electrical connection point for drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Control input; accepts logic-level voltages (≥4.5 V for full enhancement); low gate charge enables fast switching. |
| 2 (D) | Drain | Main high-side power terminal; electrically tied to mounting base for thermal and current path integrity. |
| 3 (S) | Source | Power return path; referenced to system ground in low-side switch configurations. |
| Mounting base (mb) | Drain extension | Thermally conductive metal surface for heatsink attachment; electrically identical to Pin 2 (D). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive safety-critical applications including engine management and ADAS power stages. |
| Logic-level gate drive | Turns fully on with 4.5 V gate drive, eliminating need for gate driver ICs in 5 V MCU systems. |
| 175 °C junction rating | Enables deployment in under-hood locations where ambient temperatures exceed 125 °C. |
| Low RDS(on) at 4.5 V | 26 mΩ typical at VGS = 4.5 V, ID = 25 A - reduces conduction loss by >30% vs. non-logic-level alternatives. |
| Unclamped avalanche capability | 120 mJ energy rating - withstands repetitive inductive kickback in motor commutation without derating. |
Applications
| Engine Control Module (ECM) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Switching fuel injector solenoids and ignition coils in 12 V gasoline/diesel engines. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling inductive loads with precise PWM timing and surge protection. Use Value: 175 °C rating and 120 mJ avalanche energy ensure reliability during cold cranking and load dump events. |
Use Scenario: Driving headlamps, HVAC blowers, and power window motors in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Robust power switch handling intermittent high-current pulses and thermal cycling. Use Value: 53 A continuous current and 1.1 K/W Rth(j-mb) support sustained operation without forced cooling. |
| Electric Power Steering (EPS) | Start-Stop System Actuators |
|
Use Scenario: Controlling assist motor phases and clutch engagement solenoids in EPS units. IC Role / Device Role / Timing Role: Fast-switching, low-loss power stage enabling responsive torque modulation and fault-safe shutdown. Use Value: 49 ns reverse recovery time and low Ciss/Coss minimize switching losses during high-frequency PWM control. |
Use Scenario: Managing starter motor engagement and battery isolation relays in 12 V start-stop systems. IC Role / Device Role / Timing Role: High-reliability power switch handling repeated high-inrush currents during engine restart cycles. Use Value: AEC-Q101 qualification and 213 A peak drain current support 100,000+ restart cycles without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V VDS, 220 A ID, DFN8 5×6 mm package; lower voltage rating but higher current capacity and smaller footprint. | Not suitable for 42 V automotive transients; better for space-constrained 12 V battery-powered modules. | Select when board space is critical and system voltage stays below 36 V. |
| ON Semiconductor NTMFS5C670NL | 60 V VDS, 100 A ID, SO-8FL package; 2.2 mΩ RDS(on) at 10 V but requires 10 V gate drive for full performance. | Lacks AEC-Q101 certification; not approved for safety-critical automotive use without additional qualification. | Consider only for non-safety-critical industrial or commercial 24 V applications requiring ultra-low RDS(on). |
Compared with STL220N4F7AG and NTMFS5C670NL, the BUK9523-75A uniquely combines 75 V rating, AEC-Q101 compliance, and true logic-level operation (≤2 V VGS(th))-making it the only drop-in solution for 42 V transient-tolerant automotive switching where gate drive voltage is limited to 5 V.
Availability
BUK9523-75A is available at Aetrix Electronics and suitable for automotive power switching, motor control, and solenoid actuation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BUK9523-75A 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The BUK9523-75A belongs to NXP's TrenchMOS logic-level power MOSFET product line, engineered specifically for high-reliability automotive power management where robustness, thermal resilience, and direct microcontroller interface are mandatory.
FAQ
What is the maximum gate-source voltage rating for BUK9523-75A?
The BUK9523-75A has an absolute maximum VGS rating of ±10 V under continuous conditions and ±15 V for pulsed operation (tp ≤50 µs). Exceeding ±10 V continuously risks gate oxide damage; design must include clamping or limiting circuitry if driving from higher-voltage sources. This specification is confirmed in Table 4 (Limiting Values) of the official NXP datasheet Rev. 02.
Does BUK9523-75A support high-side switching configurations?
Yes, BUK9523-75A supports high-side switching because its drain is internally connected to the mounting base, allowing direct heatsink attachment while maintaining electrical isolation of source and gate. However, gate drive must be referenced to the source node-requiring a floating or bootstrap gate driver for 12 V/24 V rail-referenced loads. This configuration is validated in automotive lighting and fuel pump applications per NXP application guidance.
What is the typical RDS(on) of BUK9523-75A at 4.5 V gate drive and elevated temperature?
At VGS = 4.5 V, ID = 25 A, and Tj = 175 °C, the BUK9523-75A exhibits a typical RDS(on) of 49 mΩ (Table 6, Characteristics). This value reflects worst-case conduction loss under full thermal stress and confirms usable performance even at maximum junction temperature.
Is BUK9523-75A pin-compatible with other TO-220AB MOSFETs?
BUK9523-75A uses the standard TO-220AB (SOT78A) outline with 3 leads and mounting base tied to drain (Pin 2), matching mechanical and thermal footprints of industry-standard TO-220AB devices. However, electrical pinout (G-D-S) and thermal characteristics are specific to this part; substitution requires verification of RDS(on), VGS(th), and avalanche rating-not just package compatibility.
How does the BUK9523-75A handle inductive load switching without external protection?
The BUK9523-75A incorporates unclamped avalanche ruggedness rated at 120 mJ (EDS(AL)S), enabling it to absorb inductive energy from motors and solenoids during turn-off without external snubber circuits. This capability is validated under defined test conditions (ID = 49 A, Vsup ≤75 V, RGS = 50 Ω) and supports reliable operation in automotive valve and actuator control.
BUK9523-75A,127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- TrenchMOS™
- Package/Case:
- TO-220-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 75 V
- Current - Continuous Drain (Id) @ 25°C:
- 53A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 22mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3120 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 138W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
BUK9523-75A,127 FAQ
1.How can I place an order for BUK9523-75A,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9523-75A,127 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 BUK9523-75A,127 reliable?
The price and inventory of BUK9523-75A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9523-75A,127 is usually 5 days.
3.What payment methods are accepted for BUK9523-75A,127?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9523-75A,127 transactions.
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4.How is shipping managed for BUK9523-75A,127?
BUK9523-75A,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9523-75A,127 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 BUK9523-75A,127?
For technical support, including BUK9523-75A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9523-75A,127 requirements.
6.How does Aetrix verify that BUK9523-75A,127 is sourced from the original manufacturer or authorized distributors?
All BUK9523-75A,127 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 BUK9523-75A,127 meets industry standards.
7.What is the process for return or replacement of BUK9523-75A,127?
All BUK9523-75A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9523-75A,127, 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 BUK9523-75A,127 part is unused and in its original packaging.
Return procedure for BUK9523-75A,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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