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Nexperia USA Inc. BAT46WJ/DG/B3X
- Part No.:
- BAT46WJ/DG/B3X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
BAT46WJ/DG/B3X.pdf
- Description:
- DIODE SCHOTTKY 100V 250MA
- Quantity:
- Payment:
- Shipping:
Inventory:7,893
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Product details
Overview
BAT46WJ from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an ultra-compact SOD323F (SC-90) surface-mount package. It delivers 100 V reverse voltage rating, 710–850 mV forward voltage at 250 mA, and 5.9 ns reverse recovery time - enabling high-speed switching in space-constrained DC/DC converters and USB power paths.
For engineers reviewing the BAT46WJ datasheet, BAT46WJ pinout, BAT46WJ application, or BAT46WJ equivalent, this diode is selected for low-loss clamping, reverse polarity protection, and line termination where sub-1 V VF, <4 µA IR at 75 V, and 39 pF capacitance are critical design constraints.
Technical Context
The BAT46WJ employs a planar Schottky junction architecture with an integrated guard ring to suppress edge breakdown under transient stress. Its low-barrier metal-semiconductor interface enables fast carrier injection and minimal minority-carrier storage.
Designed for pulsed operation (δ ≤ 0.02, tp ≤ 300 µs), it sustains 2.5 A non-repetitive peak forward current and operates up to 150 °C junction temperature. Thermal resistance from junction to ambient is 310 K/W on standard FR4 PCB - confirming suitability for thermally isolated, low-power signal-path applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 100 V - supports input rail clamping in 48 V industrial systems and USB PD 3.0 auxiliary power paths |
| Forward Voltage (VF) | 710–850 mV @ 250 mA - minimizes conduction loss in high-efficiency buck converter freewheeling paths |
| Reverse Current (IR) | 1–4 µA @ 75 V - ensures low leakage in battery backup circuits and always-on monitoring nodes |
| Reverse Recovery Time (trr) | 5.9 ns - enables clean switching at >50 MHz in RF detector and high-speed data line protection |
| Diode Capacitance (Cd) | 39 pF @ 0 V - preserves signal integrity in 100 Mbps USB 2.0 and CAN FD termination networks |
| Package Dimensions | 1.7 mm × 1.25 mm × 0.7 mm - fits 0402-class footprints while supporting 250 mA continuous forward current |
Pinout & Package
The BAT46WJ is packaged in the SOD323F (SC-90) plastic surface-mount case: ultra-flat, 2-lead, 1.7 mm × 1.25 mm body with 0.7 mm max height and cathode-marked top-side bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to load ground or return path; marking bar identifies this terminal - critical for correct polarity in reverse protection |
| 2 | Anode (A) | Input side connection; accepts positive supply or signal source - must be routed with low-inductance trace in high-dI/dt switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated guard ring | Prevents premature edge breakdown under ESD or voltage transients - improves reliability in unregulated 12 V automotive accessory lines |
| Low forward voltage | 710 mV typ. @ 250 mA - reduces power dissipation by >30% vs. standard silicon diodes in 3.3 V LDO output clamping |
| Ultra-small SMD package | SOD323F footprint - enables placement adjacent to USB-C connectors without compromising board real estate in portable medical sensors |
| Low capacitance | 39 pF @ 0 V - avoids signal distortion in 100 MHz clock distribution networks and high-speed ADC reference decoupling |
Applications
| High-Speed Switching | Line Termination |
|---|---|
|
Use Scenario: Fast-switching flyback snubber and synchronous rectifier freewheeling in 5–24 V DC/DC modules. IC Role / Device Role / Timing Role: Schottky diode providing low-VF, low-trr unidirectional current path during MOSFET off-time. Use Value: Enables >92% efficiency at 1 MHz switching frequency by limiting conduction loss and minimizing reverse recovery charge. |
Use Scenario: RS-485 bus termination and USB 2.0 D+/D− line clamping in industrial gateways. IC Role / Device Role / Timing Role: Bidirectional clamping diode pair (with complementary device) limiting signal swing to safe logic levels. Use Value: 39 pF capacitance and 5.9 ns trr prevent data eye closure at 480 Mbps, maintaining USB 2.0 compliance. |
| Voltage Clamping | Reverse Polarity Protection |
|
Use Scenario: Input rail overvoltage suppression in 12 V PoE-powered IoT controllers. IC Role / Device Role / Timing Role: Cathode-connected to regulated rail, anode to unregulated input - clamps surge transients to VF + VR. Use Value: 100 V VR rating and guard ring withstand 1 kV EFT bursts per IEC 61000-4-4 without degradation. |
Use Scenario: Input protection for battery-powered handheld test equipment with exposed barrel jacks. IC Role / Device Role / Timing Role: Anode-to-input, cathode-to-system - blocks reverse current when adapter is plugged in backward. Use Value: 1 µA IR at 75 V prevents >1 µA standby drain, extending shelf life of Li-ion packs beyond 12 months. |
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 NSR0230HT1G | 30 V VR, 0.45 V VF @ 200 mA, SOD-123 package (2.7 mm × 1.7 mm) | Lower voltage rating limits use to 5 V/3.3 V rails only; larger footprint consumes 2.3× board area | Select when ultra-low VF dominates over voltage headroom and space is not constrained |
| Vishay VS-2EDH02HM3/85A | 200 V VR, 0.92 V VF @ 250 mA, SOD-123FL package (2.8 mm × 1.8 mm) | Higher VF increases conduction loss by ~220 mW at 250 mA; no guard ring specified | Choose only if 200 V standoff is mandatory and thermal margin allows higher VF penalty |
Compared with NSR0230HT1G and VS-2EDH02HM3/85A, the BAT46WJ uniquely balances 100 V capability, 710 mV VF, and 1.7 mm × 1.25 mm size - making it optimal for compact 12–48 V systems requiring both robustness and efficiency.
Availability
BAT46WJ is available at Aetrix Electronics and suitable for high-speed switching, reverse polarity protection, and voltage clamping applications requiring stable component supply across industrial control, portable instrumentation, and USB-powered peripherals.
Supply support for BAT46WJ 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 specializing in high-performance, reliable discrete, logic, and MOSFET devices - founded in 2017 as a spin-off from NXP, now serving automotive, industrial, and consumer markets.
The BAT46WJ belongs to Nexperia's general-purpose Schottky diode product line, engineered for space-constrained, high-frequency signal and power-path protection in cost-sensitive industrial and computing applications.
FAQ
Is BAT46WJ suitable for reflow soldering only?
Yes - the datasheet explicitly states reflow soldering is the only recommended method. Wave or hand soldering risks exceeding the 150 °C maximum junction temperature and damaging the guard ring structure. Peak reflow profile must not exceed 260 °C for ≤30 seconds, per JEDEC J-STD-020.
What does the 'JK' marking on BAT46WJ indicate?
The 'JK' laser marking code uniquely identifies the BAT46WJ type per Table 4 of the datasheet. It appears adjacent to the cathode bar on the top surface of the SOD323F package and confirms authenticity and revision level (v.3, October 2022).
Can BAT46WJ replace BAT54 in existing designs?
No - BAT54 has 30 V VR and uses SOT-23 packaging. BAT46WJ's 100 V rating, SOD323F footprint, and 5.9 ns trr differ significantly. Direct substitution would require PCB layout change and may overstress BAT54's lower voltage limit in 48 V applications.
How does the guard ring improve reliability?
The integrated guard ring redistributes electric field at the silicon periphery, suppressing premature avalanche at junction edges during voltage transients. This extends lifetime under repetitive 100 V reverse bias and improves ESD tolerance to >8 kV HBM - verified in Nexperia's qualification testing per AEC-Q101.
BAT46WJ/DG/B3X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- 150°C (Max)
BAT46WJ/DG/B3X FAQ
1.How can I place an order for BAT46WJ/DG/B3X through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT46WJ/DG/B3X 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/DG/B3X reliable?
The price and inventory of BAT46WJ/DG/B3X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT46WJ/DG/B3X is usually 5 days.
3.What payment methods are accepted for BAT46WJ/DG/B3X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT46WJ/DG/B3X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT46WJ/DG/B3X?
BAT46WJ/DG/B3X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT46WJ/DG/B3X 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/DG/B3X?
For technical support, including BAT46WJ/DG/B3X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT46WJ/DG/B3X requirements.
6.How does Aetrix verify that BAT46WJ/DG/B3X is sourced from the original manufacturer or authorized distributors?
All BAT46WJ/DG/B3X 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/DG/B3X meets industry standards.
7.What is the process for return or replacement of BAT46WJ/DG/B3X?
All BAT46WJ/DG/B3X units undergo pre-shipment inspection (PSI). If there is an issue with BAT46WJ/DG/B3X, 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/DG/B3X part is unused and in its original packaging.
Return procedure for BAT46WJ/DG/B3X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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