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Nexperia USA Inc. BAT46WJ-QX
- Part No.:
- BAT46WJ-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BAT46WJ-QX.pdf
- Description:
- BAT46WJ-Q/SOD323F/SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
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Product details
Overview
BAT46WJ-QX from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an SOD323F (SC-90) surface-mount package. It delivers 100 V reverse voltage rating, 710–850 mV forward voltage at 250 mA, <4 µA reverse leakage at 75 V, 5.9 ns reverse recovery time, and 39 pF capacitance at 0 V - enabling high-speed switching and reverse polarity protection in automotive power rails.
For engineers reviewing the BAT46WJ-QX datasheet, BAT46WJ-QX pinout, BAT46WJ-QX application, or BAT46WJ-QX equivalent, this AEC-Q101-qualified Schottky diode supports critical automotive functions including line termination, voltage clamping, and low-loss DC/DC converter freewheeling where fast recovery and low VF are essential.
Technical Context
This Schottky diode uses a planar silicon structure with an integrated guard ring to enhance ruggedness against transient overvoltage and ESD stress. Its low-junction-capacitance (39 pF @ 0 V) and sub-6 ns trr enable operation in >10 MHz switching circuits without significant switching loss or ringing.
The device operates across –40 °C to +150 °C junction temperature, with thermal resistance Rth(j-a) of 310 K/W on standard FR4 PCB and 175 K/W with 1 cm² cathode pad - supporting reliable performance in under-hood automotive modules where ambient temperatures exceed 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 100 V - supports 48 V automotive systems with 2× safety margin against load dump transients. |
| Forward Voltage (VF) | 710–850 mV @ 250 mA - reduces conduction loss in high-current freewheeling paths. |
| Reverse Recovery Time (trr) | 5.9 ns - enables clean turn-off in high-frequency SMPS and signal clamping without tail current. |
| Reverse Leakage (IR) | 1–4 µA @ 75 V, 25 °C - ensures minimal standby power loss in always-on automotive circuits. |
| Diode Capacitance (Cd) | 39 pF @ 0 V, 1 MHz - limits capacitive loading in RF-coupled or high-speed digital interface protection. |
| Junction Temperature (Tj) | 150 °C max - allows sustained operation in engine control units and ADAS ECUs with limited heatsinking. |
| Package | SOD323F (SC-90), 1.7 × 1.25 × 0.7 mm - ultra-compact footprint compatible with fine-pitch automated assembly. |
Pinout & Package
Encapsulated in the SOD323F (SC-90) plastic surface-mount package: 2-pin, flat lead, 1.7 mm × 1.25 mm × 0.7 mm body height, with cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal; marked by bar; connects to return path or ground reference in clamping/freewheeling configurations. |
| 2 | Anode (A) | Positive terminal; accepts input voltage or switched node; carries forward current during conduction phase. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Enhances ESD robustness (IEC 61000-4-2 Level 4) and transient voltage immunity in automotive environments. |
| AEC-Q101 qualification | Validated for automotive use per stress test requirements - supports PPAP documentation and functional safety-aware designs. |
| Low forward voltage | 710 mV typ. @ 250 mA enables >95% efficiency in 12 V/48 V buck converter output stages. |
| Small SOD323F footprint | 1.7 × 1.25 mm area saves PCB space in compact ADAS camera modules and body control units. |
| Low capacitance (39 pF) | Minimizes signal distortion in USB 2.0 or CAN FD data line protection without degrading edge rate. |
Applications
| Automotive Power Rail Protection | High-Speed Signal Clamping |
|---|---|
|
Use Scenario: Reverse polarity protection in 12 V battery-connected infotainment head units. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with main power input to prevent damage during incorrect battery connection. Use Value: 100 V VR withstands ISO 7637-2 pulse 5a (load dump up to 120 V), while 710 mV VF limits voltage drop to <0.6% at 1 A system load. |
Use Scenario: ESD and overvoltage clamping on LVDS video lines between ADAS camera and processor. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp that conducts only above 0.7 V, preserving signal integrity below threshold. Use Value: 39 pF capacitance avoids measurable rise-time degradation on 100 Mbps LVDS signals; 5.9 ns trr prevents latch-up during fast transients. |
| DC/DC Converter Freewheeling | USB Port Polarity Protection |
|
Use Scenario: Freewheeling diode in 48 V–12 V synchronous buck converter for electric power steering. IC Role / Device Role / Timing Role: Provides continuous current path during high-side MOSFET off-time; handles peak currents up to 2.5 A non-repetitive. Use Value: Sub-1 V VF minimizes conduction loss; 150 °C Tj rating sustains operation at 110 °C ambient under full load. |
Use Scenario: Input polarity guard in USB-C receptacle circuits for telematics gateways. IC Role / Device Role / Timing Role: Series-blocking diode preventing reverse current flow into VBUS when external power source is misconnected. Use Value: 250 mA IF rating covers USB 2.0 high-speed charging; SOD323F package fits within 2.0 mm board edge clearance constraints. |
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 NSR0230P2T5G | 30 V VR, 0.45 V VF @ 200 mA, SOD-523 package (1.2 × 0.8 mm) | Lower voltage rating; unsuitable for 48 V systems or load dump protection | Select only for ≤24 V consumer-grade USB or sensor interfaces where size is primary constraint. |
| Vishay VS-2EDH02HM3/85A | 200 V VR, 0.82 V VF @ 2 A, SMA package (4.5 × 2.7 mm) | Larger footprint; higher VF increases conduction loss in compact 12 V modules | Prefer for industrial 100–200 V DC links where surge margin outweighs size and efficiency penalties. |
Compared with NSR0230P2T5G and VS-2EDH02HM3/85A, BAT46WJ-QX uniquely balances 100 V capability, ultra-small SOD323F footprint, and sub-1 V VF - making it optimal for space-constrained automotive power domains requiring both robustness and efficiency.
Availability
BAT46WJ-QX is available at Aetrix Electronics and suitable for automotive power rail protection, high-speed signal clamping, and DC/DC converter freewheeling requiring stable component supply across production lifecycles.
Supply support for BAT46WJ-QX 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 components and advanced packaging.
BAT46WJ-QX belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power management and signal integrity applications demanding low VF, fast trr, and rugged packaging.
FAQ
Is BAT46WJ-QX suitable for 48 V automotive systems?
Yes. With a 100 V reverse voltage rating and AEC-Q101 qualification, BAT46WJ-QX supports 48 V architectures including mild hybrid powertrains and domain controllers. Its 150 °C maximum junction temperature and robust thermal resistance allow operation in under-hood environments where ambient temperatures reach 105 °C.
What is the meaning of the 'Q' suffix in BAT46WJ-QX?
The 'Q' denotes AEC-Q101 qualification per Automotive Electronics Council standards. The 'X' in BAT46WJ-QX is a Nexperia internal revision or tape-and-reel packaging variant identifier - not a functional or electrical differentiation from BAT46WJ-Q. Both share identical electrical specs and qualification status.
Can BAT46WJ-QX replace BAT54 series diodes in existing designs?
No direct drop-in replacement: BAT46WJ-QX has higher VR (100 V vs. 30 V), higher VF (710 mV vs. ~350 mV), and different SOD323F footprint versus BAT54's SOT-23. While functionally similar as Schottky diodes, layout redesign and voltage-margin verification are required before substitution.
Does BAT46WJ-QX require special PCB layout considerations?
Yes. To achieve rated thermal performance, the cathode pad must be designed per Nexperia's recommended 1 cm² copper area (per Fig. 8). Standard SOD323F footprints without extended thermal pads will limit average current to ~120 mA at 70 °C ambient - significantly below the 250 mA rating.
BAT46WJ-QX 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-QX FAQ
1.How can I place an order for BAT46WJ-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT46WJ-QX 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-QX reliable?
The price and inventory of BAT46WJ-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT46WJ-QX is usually 5 days.
3.What payment methods are accepted for BAT46WJ-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT46WJ-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT46WJ-QX?
BAT46WJ-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT46WJ-QX 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-QX?
For technical support, including BAT46WJ-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT46WJ-QX requirements.
6.How does Aetrix verify that BAT46WJ-QX is sourced from the original manufacturer or authorized distributors?
All BAT46WJ-QX 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-QX meets industry standards.
7.What is the process for return or replacement of BAT46WJ-QX?
All BAT46WJ-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAT46WJ-QX, 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-QX part is unused and in its original packaging.
Return procedure for BAT46WJ-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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