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Vishay BAT54W-HE3_A-18
- Part No.:
- BAT54W-HE3_A-18
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
BAT54W-HE3_A-18.pdf
- Description:
- SCHOTTKY DIODE SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,709
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Product details
Overview
BAT54W-HE3_A-18 from Vishay Semiconductors is a surface-mount Schottky diode in SOD-123 package, rated for 30 V repetitive peak reverse voltage, 200 mA forward continuous current, and 5 ns reverse recovery time. It features low forward voltage (400 mV at 10 mA), 10 pF junction capacitance at 1 V, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BAT54W-HE3_A-18 datasheet, BAT54W-HE3_A-18 pinout, BAT54W-HE3_A-18 application, or BAT54W-HE3_A-18 equivalent, key selection criteria include its fast switching performance, low VF at low currents, MSL 1 moisture sensitivity rating, UL 94 V-0 molding compound, and suitability for space-constrained DC-DC converter feedback paths and ESD-protected signal clamping.
Technical Context
The BAT54W-HE3_A-18 implements a single Schottky junction with PN guard ring protection against electrostatic discharge. Its 5 ns trr and sub-500 mV VF at 10 mA enable high-efficiency, high-frequency rectification in buck converter synchronous bootstrap circuits and low-voltage logic-level translation interfaces.
Thermal resistance is 420 K/W junction-to-ambient on FR-4 board, and 280 K/W junction-to-lead under infinite heatsink conditions. Operating temperature range spans −55 °C to +125 °C, with storage up to +150 °C - consistent with AEC-Q101 stress test requirements for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - supports input rails up to 24 V nominal systems with margin for transients |
| IF continuous | 200 mA - suitable for low-power bias, sensing, and signal path clamping |
| trr | 5 ns - enables operation in >10 MHz switching converters without significant switching loss |
| VF @ 10 mA | 400 mV - reduces conduction loss in low-voltage (<3.3 V) power rail OR-ing and level-shifting |
| CD @ 1 V | 10 pF - minimizes capacitive loading in RF detector and high-speed data line clamp circuits |
| MSL | Level 1 - allows unlimited floor life and standard reflow without baking |
| Tj max | 125 °C - aligns with automotive engine control module thermal envelope limits |
Pinout & Package
SOD-123 surface-mount package: 2.7 mm × 1.55 mm × 1.175 mm body, cathode marked by bar, 10.6 mg weight, UL 94 V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to lower-potential node (e.g., ground side of pull-up, source of PMOS gate driver) |
| Cathode | Current exit point under forward bias; marked with bar | Connected to higher-potential node (e.g., supply rail, microcontroller I/O pin for ESD clamping) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Low VF at 0.1 mA | 240 mV - enables accurate low-current sensing and ultra-low-power wake-up circuit detection |
| Guard ring protection | PN junction ring surrounds Schottky anode to suppress edge breakdown and improve ESD robustness (HBM ≥ 8 kV) |
| MSL 1 rating | Eliminates pre-reflow baking and supports just-in-time manufacturing for high-mix automotive PCB assembly |
Applications
| Automotive Body Control Module (BCM) | USB 2.0 Data Line Clamping |
|---|---|
Use Scenario: Bidirectional signal clamping on LIN bus or CAN transceiver standby lines exposed to load dump transients. IC Role / Device Role: Low-capacitance Schottky clamp protecting transceiver I/O pins from ±30 V surges. Use Value: 10 pF CD and 5 ns trr prevent signal integrity degradation while diverting >600 mA surge current away from IC inputs. | Use Scenario: ESD protection on D+ and D− lines of USB 2.0 host ports in infotainment head units. IC Role / Device Role: Dual-channel discrete clamp (used as two separate BAT54W-HE3_A-18 devices) meeting IEC 61000-4-2 Level 4. Use Value: 2 μA IR at 25 V ensures negligible leakage across high-impedance USB termination resistors during idle states. |
| DC-DC Converter Bootstrap Diode | Low-Voltage Logic-Level Translation |
Use Scenario: High-side gate drive bootstrap path in 3.3 V-input buck converters powering ADAS camera modules. IC Role / Device Role: Fast-recovery charge pump diode delivering gate charge to N-channel high-side MOSFET. Use Value: 400 mV VF at 10 mA minimizes bootstrap voltage droop and maintains >95% duty cycle capability at 2 MHz switching. | Use Scenario: Voltage-level shifting between 1.8 V FPGA I/O and 3.3 V sensor interface in telematics control units. IC Role / Device Role: Passive bidirectional translator using Schottky forward drop to offset voltage domains. Use Value: 320 mV VF at 1 mA enables precise 1.8 V → 3.3 V translation with <10 mV error over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54SWT1G | Same SOD-123 package, 30 V VRRM, but 350 mW Ptot (vs. 230 mW on FR-4); VF = 420 mV @ 10 mA | Higher power dissipation rating suits thermally constrained layouts with limited copper area | Select when board-level thermal design cannot meet 420 K/W RthJA requirement |
| NSR0230P2T5G | Smaller SOD-923 package (1.0 × 0.6 mm), 30 V VRRM, VF = 370 mV @ 10 mA, CD = 8 pF | Ultra-compact footprint ideal for wearable and compact ADAS camera PCBs | Select when board space is limited and 200 mA IF rating remains sufficient |
Compared with SBAT54SWT1G and NSR0230P2T5G, the BAT54W-HE3_A-18 provides the only AEC-Q101 qualified option in standard SOD-123 with MSL 1 and UL 94 V-0 compliance - making it the default choice for production automotive modules requiring full qualification traceability.
Availability
BAT54W-HE3_A-18 is available at Aetrix Electronics and suitable for automotive body electronics, USB interface protection, DC-DC converter bootstrap circuits, and low-voltage logic translation requiring stable component supply and full AEC-Q101 documentation.
Supply support for BAT54W-HE3_A-18 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
Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA.
The BAT54W-HE3_A-18 belongs to Vishay's automotive-qualified small-signal Schottky diode product line, engineered specifically for ESD-hardened signal routing and high-frequency power management in harsh-environment vehicle subsystems.
FAQ
What is the maximum junction temperature rating for BAT54W-HE3_A-18?
The BAT54W-HE3_A-18 has a maximum junction temperature (Tj) of 125 °C, verified per AEC-Q101 stress testing and specified in the absolute maximum ratings table. This rating applies under continuous operation with proper thermal management on FR-4 PCBs. Exceeding 125 °C risks parametric shift and long-term reliability degradation. The BAT54W-HE3_A-18 must be operated within this limit to maintain its AEC-Q101 qualification status.
Is BAT54W-HE3_A-18 RoHS-compliant and halogen-free?
Yes, BAT54W-HE3_A-18 is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's halogen-free definition (Br < 900 ppm, Cl < 900 ppm, total halogens < 1500 ppm). The "HE3" suffix explicitly denotes AEC-Q101 qualification and RoHS compliance. Material categorization documentation is available under Vishay document #99912, and the molding compound carries UL 94 V-0 flammability certification.
What does the "_A-18" suffix mean in BAT54W-HE3_A-18?
The "_A-18" suffix in BAT54W-HE3_A-18 indicates packaging: 10,000 units per 13-inch reel on 8 mm tape (ordering code BAT54W-HE3_A-18). The "A" denotes tape-and-reel orientation per Vishay's carrier tape specification S8-V-3717.10-002. This differs from "_A-08", which specifies 3,000 units per 7-inch reel. Both share identical electrical and qualification specifications.
Can BAT54W-HE3_A-18 replace BAT54C in a dual-common-cathode configuration?
No, BAT54W-HE3_A-18 is a single-diode SOD-123 device and cannot functionally replace the BAT54C, which is a dual-diode common-cathode configuration in SOT-23. Their pinouts, terminal counts, and internal topology differ fundamentally. Substitution would require PCB layout revision and validation of reverse recovery interaction between channels. The BAT54W-HE3_A-18 serves single-path applications only.
What is the typical reverse leakage current of BAT54W-HE3_A-18 at 25 V and 85 °C?
Per Vishay's electrical characteristics table, the BAT54W-HE3_A-18 exhibits a maximum reverse leakage current (IR) of 2 μA at VR = 25 V and Tamb = 25 °C. At 85 °C, leakage increases - typical data shows ~15 μA at 25 V and 85 °C (based on Fig. 3, "Typical Reverse Characteristics"). Designers should verify system-level leakage budgets using this elevated value, not the 25 °C spec, for under-hood automotive applications.
BAT54W-HE3_A-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- 125°C
BAT54W-HE3_A-18 FAQ
1.How can I place an order for BAT54W-HE3_A-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54W-HE3_A-18 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 BAT54W-HE3_A-18 reliable?
The price and inventory of BAT54W-HE3_A-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54W-HE3_A-18 is usually 5 days.
3.What payment methods are accepted for BAT54W-HE3_A-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54W-HE3_A-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54W-HE3_A-18?
BAT54W-HE3_A-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54W-HE3_A-18 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 BAT54W-HE3_A-18?
For technical support, including BAT54W-HE3_A-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54W-HE3_A-18 requirements.
6.How does Aetrix verify that BAT54W-HE3_A-18 is sourced from the original manufacturer or authorized distributors?
All BAT54W-HE3_A-18 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 BAT54W-HE3_A-18 meets industry standards.
7.What is the process for return or replacement of BAT54W-HE3_A-18?
All BAT54W-HE3_A-18 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54W-HE3_A-18, 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 BAT54W-HE3_A-18 part is unused and in its original packaging.
Return procedure for BAT54W-HE3_A-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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