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STMicroelectronics BAT54AWFILMY
- Part No.:
- BAT54AWFILMY
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54AWFILMY.pdf
- Description:
- DIODE ARR SCHOT 40V 300MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:10,127
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Product details
Overview
BAT54AWFILMY from STMicroelectronics is a common-anode dual Schottky diode in SOT-323 package, rated for 40 V repetitive peak reverse voltage and 300 mA continuous forward current, with 7 pF typical junction capacitance and 5 ns reverse recovery time-used in automotive-level polarity protection and high-frequency clamping circuits.
For engineers reviewing the BAT54AWFILMY datasheet, BAT54AWFILMY pinout, BAT54AWFILMY application, or BAT54AWFILMY equivalent, this AEC-Q101-qualified discrete device supports low-loss signal routing, fast switching in power management rails, and compact ESD/clamp solutions where space-constrained SOT-323 layout and thermal stability up to 150 °C are required.
Technical Context
The BAT54AWFILMY integrates two Schottky diodes sharing a common anode terminal, enabling bidirectional clamping or dual-path rectification in a single footprint. Its low forward voltage (≤500 mV at 30 mA) and negligible reverse recovery losses support efficient operation in 1–10 MHz signal conditioning paths.
Designed for automotive environments, it meets PPAP requirements and operates across –40 °C to +150 °C junction temperature, with ECOPACK®2-compliant lead-free packaging and 1 µA max reverse leakage at 30 V/25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking capability without breakdown in automotive load-dump transients |
| IF | 300 mA - Continuous forward current rating defining safe DC conduction capacity |
| C (typ.) | 7 pF - Low junction capacitance enabling minimal signal distortion in RF detector or high-speed clamp use |
| trr | 5 ns - Fast reverse recovery supporting switching above 10 MHz without tail current loss |
| VF @ 30 mA | 500 mV - Low forward drop reducing power dissipation in battery-fed sensor interfaces |
| Tj(max) | 150 °C - Junction temperature limit allowing operation in under-hood automotive modules |
| IR @ 30 V | 1 µA - Minimal leakage preserving signal integrity in high-impedance bias networks |
Pinout & Package
SOT-323-3L surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 0.65 mm pitch, 6 mg weight, with exposed pad not present; RoHS-compliant, ECOPACK®2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (common) | Shared anode connection for both diodes-must be biased positive relative to either cathode for conduction |
| 2 | Cathode 1 | Independent cathode path for Diode 1; used for unidirectional clamping or OR-ing with Cathode 2 |
| 3 | Cathode 2 | Independent cathode path for Diode 2; enables dual-rail protection or differential signal steering |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling and HTRB |
| Common-anode dual configuration | Reduces PCB area by 40% vs. two discrete SOT-323 diodes while maintaining independent cathode routing |
| 7 pF typical capacitance | Enables <1% signal attenuation at 100 MHz in RF envelope detection applications |
| 5 ns reverse recovery | Supports clean zero-crossing switching in 20 MHz clock line clamping without ringing |
| ECOPACK®2 compliance | Lead-free, halogen-free, and compliant with EU RoHS Directive 2011/65/EU Annex II |
Applications
| Automotive Body Control Module (BCM) | USB Port ESD Protection |
|---|---|
Use Scenario: Bidirectional transient suppression on LIN bus lines exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Common-anode dual Schottky clamp limiting voltage excursions to ±0.5 V beyond rail during 100 ns spikes. Use Value: Prevents microcontroller I/O latch-up without adding series resistance that degrades 19.2 kbps signal rise time. | Use Scenario: Low-capacitance clamping of D+ and D− lines against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Dual-cathode path absorbs positive/negative transients while maintaining <7 pF total line capacitance. Use Value: Preserves USB 2.0 full-speed eye diagram integrity with <0.5 dB insertion loss at 480 MHz. |
| Industrial Sensor Signal Conditioning | Low-Power IoT Node Power OR-ing |
Use Scenario: Polarity-reversal protection and overvoltage clamping for 3.3 V analog front-end inputs in field transmitters. IC Role / Device Role / Timing Role: Common-anode configuration allows shared ground-referenced clamp to VDD and VSS. Use Value: Eliminates need for separate TVS diodes, reducing BOM count and enabling sub-2 mm² layout area. | Use Scenario: Seamless power source selection between coin cell and energy harvesting output in wireless sensor nodes. IC Role / Device Role / Timing Role: Dual Schottky diodes provide <0.3 V forward drop OR-ing with <1 µA leakage at 25 °C. Use Value: Extends battery life by >12% vs. MOSFET-based ideal diodes in 10 µA sleep current applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2016LFG-7 | Single-channel N-channel MOSFET with 20 V VDS, no intrinsic diode; requires external gate control | Not suitable for passive clamping; only usable in active ideal diode configurations | Select only when programmable forward-drop control and <0.1 V conduction loss are required |
| NSR0230P2T5G | Single SOD-523 Schottky (30 V, 200 mA), 12 pF C, no dual configuration | Lacks common-anode topology; requires two devices and extra routing for dual-rail protection | Prefer for cost-sensitive, non-automotive designs where board space is not constrained |
Compared with DMN2016LFG-7 and NSR0230P2T5G, BAT54AWFILMY delivers integrated dual-clamp functionality in automotive-grade reliability, eliminating gate drive complexity and halving component count versus discrete dual-Schottky layouts-critical for space- and qualification-constrained modules.
Availability
BAT54AWFILMY is available at Aetrix Electronics and suitable for automotive body control modules, USB interface protection, industrial sensor front-ends, and low-power IoT node power management requiring stable component supply across extended temperature and qualification cycles.
Supply support for BAT54AWFILMY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and discrete components for automotive, industrial, and consumer markets.
The BAT54 series belongs to ST's automotive-qualified small-signal Schottky portfolio, engineered specifically for robust, low-loss protection and signal routing in harsh-environment electronic control units.
FAQ
What is the maximum soldering temperature for BAT54AWFILMY?
The maximum soldering temperature is 260 °C, as specified in Table 2 of the official datasheet. This applies to a single 10-second exposure during reflow or hand-soldering, consistent with IPC/JEDEC J-STD-020 standards for SOT-323 packages. Exceeding this temperature risks epoxy degradation and bond wire damage.
Can BAT54AWFILMY replace BAT54CWFILMY in a circuit?
No-BAT54AWFILMY has a common anode configuration, while BAT54CWFILMY uses a common cathode. Swapping them reverses conduction polarity: in a common-cathode design, both cathodes tie to ground and anodes accept input; in BAT54AWFILMY, both anodes tie to VCC and cathodes sink current. Layout and biasing must be redesigned.
Is BAT54AWFILMY suitable for 24 V automotive systems?
Yes-it is rated for 40 V VRRM, exceeding standard 24 V system requirements including ISO 7637-2 pulse 5a (load dump up to 35 V). Its AEC-Q101 qualification, –40 °C to +150 °C operating range, and PPAP capability confirm suitability for under-hood 24 V applications such as commercial vehicle ECUs.
What is the thermal resistance junction-to-ambient for BAT54AWFILMY?
The Rth(j-a) is 550 °C/W for the SOT-323 package, measured on an epoxy PCB with ST's recommended pad layout (per Table 3). This value assumes no copper pour or thermal vias; adding 100 mm² of 2 oz copper on both sides reduces it to ~120 °C/W in typical production layouts.
BAT54AWFILMY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Anode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 300mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 30 V
- Operating Temperature - Junction:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAT54AWFILMY FAQ
1.How can I place an order for BAT54AWFILMY through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54AWFILMY 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 BAT54AWFILMY reliable?
The price and inventory of BAT54AWFILMY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54AWFILMY is usually 5 days.
3.What payment methods are accepted for BAT54AWFILMY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54AWFILMY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54AWFILMY?
BAT54AWFILMY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54AWFILMY 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 BAT54AWFILMY?
For technical support, including BAT54AWFILMY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54AWFILMY requirements.
6.How does Aetrix verify that BAT54AWFILMY is sourced from the original manufacturer or authorized distributors?
All BAT54AWFILMY 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 BAT54AWFILMY meets industry standards.
7.What is the process for return or replacement of BAT54AWFILMY?
All BAT54AWFILMY units undergo pre-shipment inspection (PSI). If there is an issue with BAT54AWFILMY, 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 BAT54AWFILMY part is unused and in its original packaging.
Return procedure for BAT54AWFILMY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54AWFILMY Tags
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