My Inquiry
My Account
Nexperia USA Inc. BUK6212-40C,118
- Part No.:
- BUK6212-40C,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK6212-40C,118.pdf
- Description:
- NEXPERIA BUK6212-40C - 50A, 40V,
- Quantity:
- Payment:
- Shipping:
Inventory:54,438
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BUK6212-40C,118 from Nexperia is an AEC-Q101 qualified N-channel TrenchMOS FET in DPAK (SOT428) package, designed for automotive power switching with 40 V VDS, 50 A continuous drain current at Tmb = 25 °C, and 9.5 mΩ RDS(on) at VGS = 10 V - deployed in electric power steering, start-stop micro-hybrid systems, and transmission control.
For engineers reviewing the BUK6212-40C,118 datasheet, BUK6212-40C,118 pinout, BUK6212-40C,118 application, or BUK6212-40C,118 equivalent, key selection criteria include its 175 °C junction rating, intermediate-level gate drive compatibility (VGS(th) = 1.8–2.8 V), avalanche ruggedness (55 mJ), thermally robust DPAK mounting base, and automotive-grade reliability validation.
Technical Context
This device implements a trench-gate MOSFET structure optimized for low conduction loss and fast switching in 12 V automotive systems. Its gate threshold voltage (1.8–2.8 V at 25 °C) enables direct drive from standard logic-level microcontrollers while maintaining stable operation across -55 to +175 °C junction temperature range.
The integrated source-drain diode supports freewheeling in inductive loads, with 0.9–1.2 V forward drop at 25 A and 35.6 ns reverse recovery time. Thermal resistance from junction to mounting base is 1.87 K/W, enabling high-power dissipation (80 W) when properly heatsinked via the exposed drain pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V - Maximum drain-source blocking voltage compatible with 12 V automotive battery systems including load dump transients. |
| ID (continuous) | 50 A at Tmb = 25 °C - Continuous current capability limited by DPAK package thermal performance, not die. |
| RDS(on) | 9.5 mΩ typ at VGS = 10 V, ID = 12 A, Tmb = 25 °C - Low on-resistance minimizes conduction loss in high-current motor/solenoid drivers. |
| VGS(th) | 1.8–2.8 V at ID = 1 mA - Intermediate gate threshold allows reliable turn-on from 3.3 V or 5 V MCU GPIOs without level-shifting. |
| EAS | 55 mJ non-repetitive avalanche energy - Enables robust operation during inductive switching events without external snubbers. |
| Rth(j-mb) | 1.87 K/W - Low thermal resistance from junction to mounting base supports high-power density PCB layout with direct heatsinking. |
Pinout & Package
Package: SOT428 (DPAK), plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base (mb) is electrically connected to drain and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G (Gate) | Control terminal; accepts 0–20 V pulsed or 0–16 V DC gate drive; threshold defined at 1 mA source current. |
| 2 | D (Drain) | Main high-side power terminal; internally bonded to mounting base (mb) for thermal and electrical connection to heatsink. |
| 3 | S (Source) | Power return path and reference for gate drive; forms common node with driver IC ground in high-side configurations. |
| mb | Mounting Base | Exposed copper pad soldered to PCB copper pour; electrically tied to drain; primary thermal interface for 80 W power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive safety-critical applications including power steering and transmission control per stress test requirements. |
| 175 °C maximum junction temperature | Enables operation in under-hood environments where ambient exceeds 125 °C, with full RDS(on) derating up to Tj = 175 °C. |
| Logic- and standard-level gate compatibility | VGS(th) range (1.8–2.8 V) ensures turn-on with 3.3 V/5 V MCUs and remains stable across temperature extremes. |
| Integrated source-drain diode | Supports bidirectional current in H-bridge or flyback topologies; 35.6 ns trr and 38 nC Qr reduce switching losses in PWM motor control. |
| TrenchMOS technology | Delivers 9.5 mΩ RDS(on) in DPAK package - 30% lower on-resistance than planar MOSFETs of comparable size and voltage rating. |
Applications
| Electric Power Steering (EPS) | Start-Stop Micro-Hybrid Systems |
|---|---|
|
Use Scenario: High-current motor phase switching in column-assist or rack-assist EPS modules operating continuously at 12 V nominal with transient spikes up to 40 V. IC Role / Device Role / Timing Role: Main power switch in three-phase inverter bridge; handles 30–50 A peak phase current with <10 ns turn-on delay and <32 ns fall time. Use Value: Low RDS(on) reduces conduction loss and thermal stress; 175 °C rating ensures reliability during extended parking-mode operation with no airflow. |
Use Scenario: Controlled engagement/disengagement of starter motor and alternator in 12 V stop-start systems, subject to frequent cycling and high ambient under-hood temperatures. IC Role / Device Role / Timing Role: High-side load switch isolating battery from starter solenoid or belt-driven starter-generator; rated for >100,000 cycles. Use Value: Avalanche ruggedness (55 mJ) absorbs inductive kickback during rapid de-energization; AEC-Q101 qualification guarantees long-term field reliability. |
| Transmission Control Solenoids | LED Headlamp Dimming Drivers |
|
Use Scenario: PWM-driven hydraulic pressure control solenoids in automatic transmissions, requiring precise current regulation and thermal resilience near engine block. IC Role / Device Role / Timing Role: Low-side switch modulating 2–5 A solenoid current at 100–500 Hz; operates with 5 V gate drive and minimal external components. Use Value: Stable VGS(th) over -40 to +150 °C ambient ensures consistent turn-on timing; 1.87 K/W Rth(j-mb) maintains safe Tj under sustained duty cycle. |
Use Scenario: High-brightness LED array dimming in adaptive front-lighting systems (AFS), where thermal management and EMI are critical constraints. IC Role / Device Role / Timing Role: Synchronous buck converter high-side switch operating at 200–500 kHz; requires low QGD (10.1 nC) and fast switching (tf = 32 ns). Use Value: Low gate-drain charge minimizes Miller-induced shoot-through risk; Crss = 143–200 pF enables clean voltage transitions with minimal ringing. |
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 |
|---|---|---|---|
| STL220N4F7AG | 40 V, 220 A (TO-220FP), RDS(on) = 2.2 mΩ @ 10 V - higher current, larger package, higher gate charge (QG = 105 nC). | Targeted at higher-power transmission control modules requiring >100 A peak; unsuitable for space-constrained EPS PCB layouts. | Select when board-level thermal design supports TO-220FP and system demands sub-3 mΩ conduction loss at cost of slower switching and larger footprint. |
| IRF3205PBF | 55 V, 110 A (TO-220AB), RDS(on) = 8.0 mΩ @ 10 V - wider voltage margin but non-AEC-Q101, max Tj = 175 °C not validated for automotive. | Used in industrial motor drives; lacks automotive qualification, making it unsuitable for OEM production in safety-critical vehicle subsystems. | Consider only for non-automotive prototypes or aftermarket modules where AEC-Q101 compliance is not mandated. |
Compared with STL220N4F7AG and IRF3205PBF, BUK6212-40C,118 uniquely balances AEC-Q101 compliance, DPAK form factor, 9.5 mΩ on-resistance, and 55 mJ avalanche capability - making it optimal for space- and reliability-constrained 12 V automotive power stages where TO-220 devices are impractical and non-qualified alternatives carry certification risk.
Availability
BUK6212-40C,118 is available at Aetrix Electronics and suitable for electric power steering, start-stop micro-hybrid systems, and transmission control requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for BUK6212-40C,118 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, logic, and MOSFET solutions - spun off from Philips and now part of Wingtech Technology.
BUK6212-40C,118 belongs to Nexperia's Automotive Logic-Level Power MOSFET product line, engineered specifically for thermally demanding 12 V automotive subsystems requiring AEC-Q101 qualification, robust avalanche performance, and compact surface-mount packaging.
FAQ
What is the maximum continuous drain current for BUK6212-40C,118 at 100 °C mounting base temperature?
The maximum continuous drain current is 41 A at Tmb = 100 °C, as specified in Table 4 (Limiting Values). This derating reflects thermal limits of the DPAK package rather than die capability, and is verified by Figure 1 in the datasheet showing ID vs. Tmb.
Does BUK6212-40C,118 require a gate resistor for automotive PWM applications?
Yes - a gate resistor (typically 10–47 Ω) is recommended to control dV/dt and prevent parasitic oscillation, especially given its 10.1 nC QGD and 1422 pF Ciss. The datasheet specifies RG(ext) = 10 Ω in switching time measurements (td(on), tr, etc.), confirming this value as a validated starting point for 12 V automotive PWM drivers.
Can BUK6212-40C,118 be used in high-side switch configurations?
Yes - its gate threshold (1.8–2.8 V) and 20 V maximum gate-source voltage allow use in high-side configurations with appropriate level-shifted gate drive. The mounting base is tied to drain, so thermal design must accommodate high-side placement on heatsinked copper, and source must be referenced to load rather than ground.
Is the source-drain diode in BUK6212-40C,118 suitable for synchronous rectification?
No - the diode has 35.6 ns reverse recovery time and 38 nC recovered charge, which causes significant switching loss and voltage overshoot in synchronous rectifier topologies above ~100 kHz. It is intended for freewheeling and clamping, not active rectification; external Schottky diodes or dedicated synchronous MOSFETs are preferred for that function.
BUK6212-40C,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 50A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- -
- Rds On (Max) @ Id, Vgs:
- 11.2mOhm @ 12A, 10V
- Vgs(th) (Max) @ Id:
- 2.8V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 33.9 nC @ 10 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1900 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 80W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK6212-40C,118 FAQ
1.How can I place an order for BUK6212-40C,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK6212-40C,118 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 BUK6212-40C,118 reliable?
The price and inventory of BUK6212-40C,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK6212-40C,118 is usually 5 days.
3.What payment methods are accepted for BUK6212-40C,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK6212-40C,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK6212-40C,118?
BUK6212-40C,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK6212-40C,118 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 BUK6212-40C,118?
For technical support, including BUK6212-40C,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK6212-40C,118 requirements.
6.How does Aetrix verify that BUK6212-40C,118 is sourced from the original manufacturer or authorized distributors?
All BUK6212-40C,118 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 BUK6212-40C,118 meets industry standards.
7.What is the process for return or replacement of BUK6212-40C,118?
All BUK6212-40C,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK6212-40C,118, 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 BUK6212-40C,118 part is unused and in its original packaging.
Return procedure for BUK6212-40C,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUK6212-40C,118 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…
