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Nexperia USA Inc. BAT46WJ-QF
- Part No.:
- BAT46WJ-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BAT46WJ-QF.pdf
- Description:
- BAT46WJ-Q/SOD323F/SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:4,817
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Product details
Overview
BAT46WJ-QF from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, designed for high-speed switching and reverse polarity protection in automotive-grade power rails. It delivers VF = 710–850 mV at IF = 250 mA, VR = 100 V, IR ≤ 4 µA at VR = 75 V, trr = 5.9 ns, and Cd = 39 pF at VR = 0 V - enabling low-loss clamping in compact SOD323F (SC-90) packages.
For engineers reviewing the BAT46WJ-QF datasheet, BAT46WJ-QF pinout, BAT46WJ-QF application, or BAT46WJ-QF equivalent, this AEC-Q101-qualified Schottky diode supports design validation for line termination, voltage clamping, and automotive ECU power sequencing where low forward voltage, fast recovery, and thermal robustness are critical.
Technical Context
This Schottky diode uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve surge reliability under repetitive transient stress. Its low-junction-capacitance (39 pF @ 0 V) and sub-6 ns reverse recovery time enable clean signal integrity in high-frequency clamp and flyback paths.
The device operates across –40 °C to +150 °C junction temperature, with thermal resistance Rth(j-a) = 310 K/W on standard FR4 and Rth(j-sp) = 35 K/W to cathode solder point - confirming suitability for thermally constrained automotive PCB layouts with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 100 V - supports 48 V automotive systems with ≥2× safety margin against load-dump transients. |
| VF (Forward Voltage) | 710–850 mV @ 250 mA - reduces conduction loss and self-heating in always-on reverse-polarity protection circuits. |
| trr (Reverse Recovery Time) | 5.9 ns - enables operation up to ~170 MHz switching without tail current-induced shoot-through in DC-DC sync rectifiers. |
| Cd (Diode Capacitance) | 39 pF @ 0 V - minimizes signal distortion in high-speed line termination and USB/RS-485 bus clamping. |
| IR (Reverse Current) | ≤4 µA @ 75 V, 25 °C - ensures low leakage in battery-backed backup rails and low-power sensor interfaces. |
| Ptot (Power Dissipation) | 400 mW @ Tamb ≤ 25 °C - allows continuous 250 mA operation with <10 °C rise on standard FR4 footprint. |
| AEC-Q101 Qualified | Qualified for automotive applications - meets stress test requirements for temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Encapsulated in the ultra-compact SOD323F (SC-90) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.7 mm body, flat lead profile optimized for automated placement and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Marked with bar; connects to system ground or lower-potential rail; carries full forward current and dissipates heat via cathode pad. |
| 2 | Anode (A) | Connects to input/power source side; reverse-biased during clamping; requires layout clearance to avoid field crowding at edge. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated guard ring | Suppresses edge breakdown under high dv/dt, improving reliability in automotive load-dump and ISO 7637-2 pulse 5a environments. |
| Low VF at high IF | 710 mV typ. @ 250 mA enables >95% efficiency in 12 V reverse-polarity protection with <0.18 W dissipation. |
| Ultra-low trr | 5.9 ns typical ensures minimal switching loss and no reverse recovery overshoot in 1–10 MHz DC-DC output stages. |
| SOD323F footprint | 1.7 mm × 1.25 mm outline fits dense automotive MCU power domains; compatible with IPC-7351B SC-90 land pattern. |
| AEC-Q101 qualification | Validated for Grade 1 (–40 °C to +125 °C ambient) automotive use - qualified per HTGB, HTRB, and TCT requirements. |
Applications
| Automotive ECU Power Input Protection | USB Type-C Port Clamping |
|---|---|
|
Use Scenario: Reverse battery connection protection on 12 V/24 V vehicle control units with CAN/LIN interfaces. IC Role / Device Role / Timing Role: Unidirectional series-blocking diode placed between battery feed and LDO input; conducts only during correct polarity. Use Value: 710 mV VF limits voltage drop to <0.75 V at 250 mA, preserving LDO headroom while surviving 100 V transients per ISO 7637-2. |
Use Scenario: ESD and overvoltage clamping on USB 2.0 D+/D− lines in infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp to ground; activated during ±15 kV HBM events or 12 V surges. Use Value: 39 pF capacitance avoids signal degradation at 480 Mbps; 5.9 ns trr prevents latch-up during fast-rising ESD pulses. |
| Industrial Sensor Signal Line Termination | DC-DC Converter Sync Rectification |
|
Use Scenario: RS-485 bus termination on factory-floor I/O modules exposed to 2 kV EFT noise. IC Role / Device Role / Timing Role: Bidirectional TVS-assisted clamp using two BAT46WJ-QF back-to-back; absorbs common-mode transients. Use Value: 100 V VR withstands sustained 60 V common-mode offsets; low IR (<4 µA) avoids loading 120 Ω termination resistors. |
Use Scenario: Secondary-side synchronous rectifier in isolated 5 V/3 A flyback converter for ADAS camera modules. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path replacing MOSFET gate drive complexity; commutates at 300 kHz. Use Value: 5.9 ns trr eliminates reverse recovery loss; 710 mV VF yields 0.18 W conduction loss vs. 0.35 W for standard Si diode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40201MR6T1G | VF = 450 mV @ 200 mA; VR = 40 V; SOD-123FL package (2.7 × 1.7 mm). | Limited to 12 V systems; larger footprint reduces board density; lower VF improves efficiency below 100 mA. | Select when ultra-low VF dominates over voltage rating and space constraints are relaxed. |
| Vishay VS-2EDH02HM3/85A | VF = 520 mV @ 2 A; VR = 200 V; SMA package (4.5 × 2.7 mm); trr = 12 ns. | Higher current rating suits 5 A+ rails; slower recovery increases loss above 500 kHz; larger thermal mass aids heatsinking. | Select for industrial 48 V supplies requiring >1 A average current and higher VR margin. |
Compared with BAT46WJ-QF, NSS40201MR6T1G trades 60 V VR headroom for 260 mV lower VF in smaller-current roles, while VS-2EDH02HM3/85A sacrifices speed and size for higher voltage/current handling - making BAT46WJ-QF optimal for space-constrained, 100 V-rated automotive signal/power clamping.
Availability
BAT46WJ-QF is available at Aetrix Electronics and suitable for automotive ECU protection, USB port clamping, and industrial sensor line termination requiring stable component supply, AEC-Q101 compliance, and SOD323F footprint consistency.
Supply support for BAT46WJ-QF 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
BAT46WJ-QF belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power rail protection and high-speed signal integrity in space-constrained ECUs and ADAS subsystems.
FAQ
Is BAT46WJ-QF suitable for reflow-only assembly?
Yes - the datasheet explicitly states reflow soldering is the only recommended method. Wave or hand soldering is not qualified due to thermal stress risks on the SOD323F mold compound and internal wire bonds. Peak reflow temperature must not exceed 260 °C per JEDEC J-STD-020.
What is the meaning of the 'JK' marking on BAT46WJ-QF?
The 'JK' laser marking on the top surface identifies the BAT46WJ-QF device per Nexperia's ordering matrix. It corresponds exclusively to the Q-grade (AEC-Q101 qualified) version in SOD323F packaging and is not interchangeable with non-Q variants marked differently (e.g., 'JL' for standard grade).
How does the guard ring affect layout requirements?
The integrated guard ring requires no special layout but mandates strict adherence to the SOD323F footprint: cathode pad must be ≥1 cm² on single-sided FR4 per datasheet condition [3], and anode pad must maintain ≥0.25 mm clearance to adjacent copper to prevent field enhancement at the die edge.
Can BAT46WJ-QF replace BAT54 series in existing designs?
No - BAT54 devices have VR = 30 V and VF ≈ 1 V @ 100 mA, making them unsuitable for 100 V automotive transients. BAT46WJ-QF's 100 V rating, 710 mV VF, and AEC-Q101 qualification represent a functional upgrade, not a drop-in replacement; layout and stress analysis must be revalidated.
BAT46WJ-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 250 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5.9 ns
- Current - Reverse Leakage @ Vr:
- 9 µA @ 100 V
- Capacitance @ Vr, F:
- 39pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
- Operating Temperature - Junction:
- 150°C
BAT46WJ-QF FAQ
1.How can I place an order for BAT46WJ-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT46WJ-QF 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 BAT46WJ-QF reliable?
The price and inventory of BAT46WJ-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT46WJ-QF is usually 5 days.
3.What payment methods are accepted for BAT46WJ-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT46WJ-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT46WJ-QF?
BAT46WJ-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT46WJ-QF 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 BAT46WJ-QF?
For technical support, including BAT46WJ-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT46WJ-QF requirements.
6.How does Aetrix verify that BAT46WJ-QF is sourced from the original manufacturer or authorized distributors?
All BAT46WJ-QF 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 BAT46WJ-QF meets industry standards.
7.What is the process for return or replacement of BAT46WJ-QF?
All BAT46WJ-QF units undergo pre-shipment inspection (PSI). If there is an issue with BAT46WJ-QF, 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 BAT46WJ-QF part is unused and in its original packaging.
Return procedure for BAT46WJ-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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