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Taiwan Semiconductor Corporation BAT54W RFG
- Part No.:
- BAT54W RFG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54W RFG.pdf
- Description:
- SOT-323, 30V, 0.2A, SCHOTTKY DIO
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
BAT54W RFG from Taiwan Semiconductor is a 30 V, 200 mA Schottky barrier diode in SOT-323 package, featuring 5 ns reverse recovery time, ≤500 mV forward voltage at 30 mA, and 2 µA reverse leakage at 25 V - deployed for ultra-high-speed switching and voltage clamping in portable power management circuits.
For engineers reviewing the BAT54W RFG datasheet, BAT54W RFG pinout, BAT54W RFG application, or BAT54W RFG equivalent, key selection criteria include fast trr performance, low VF under light-to-moderate forward bias, thermal robustness to 125°C junction temperature, and compatibility with reflow profiles up to 260°C/10s.
Technical Context
This Schottky diode operates without minority-carrier storage, enabling nanosecond-scale switching transitions. Its low VF (≤400 mV at 10 mA) and minimal CJ (10 pF at 1 V) support efficient signal-level clamping and high-frequency rectification in DC-DC feedback paths and I/O protection networks.
The device's 625°C/W junction-to-ambient thermal resistance and 200 mW power dissipation rating reflect its suitability for low-power surface-mount applications where board space and thermal mass are constrained - not intended for continuous high-current operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse voltage before breakdown; sets clamping ceiling in overvoltage protection |
| IF | 200 mA - continuous forward current rating; defines steady-state conduction capability |
| trr | 5 ns - reverse recovery time; enables operation in >100 MHz switching circuits |
| VF @ 30 mA | ≤500 mV - forward voltage drop; minimizes conduction loss in low-voltage rail clamping |
| IR @ 25 V | ≤2 µA - reverse leakage current; ensures low standby power in battery-backed circuits |
| CJ @ 1 V | 10 pF - junction capacitance; limits capacitive loading on high-speed signal lines |
| TJ max | 125°C - maximum junction temperature; supports operation in sealed or thermally restricted enclosures |
Pinout & Package
SOT-323 package: 3-terminal plastic surface-mount case, 5.00 mg weight, moisture sensitivity level 1 per J-STD-020, compatible with standard IR reflow profiles including 260°C/10s peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node during conduction; polarity-sensitive for reverse polarity protection |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Typically tied to ground or return path; forms clamping path to reference rail |
| Collector / Heat sink tab (Pin 3) | Internal die substrate connection | Electrically connected to cathode in BAT54W; provides mechanical anchoring and minor thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high-speed switching | 5 ns trr enables use in >100 MHz clock line clamping and RF detector circuits |
| Low forward voltage | ≤400 mV at 10 mA reduces voltage offset in precision analog signal routing |
| Reverse polarity protection | 30 V VRRM and 600 mA IFSM withstand transient reverse surges in USB-powered devices |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
| High-temperature soldering guarantee | Rated for 260°C/10s reflow - compatible with lead-free assembly without parametric shift |
Applications
| USB Port Protection | DC-DC Feedback Clamping |
|---|---|
Use Scenario: Preventing damage from accidental reverse connection of USB cables in portable chargers and peripherals. IC Role / Device Role / Timing Role: Schottky diode placed in series with VBUS line to block reverse current flow. Use Value: Low VF (≤500 mV at 30 mA) minimizes insertion loss; 30 V VRRM exceeds USB 2.0/3.0 operating range. | Use Scenario: Clamping feedback node voltage in buck converter error amplifiers to prevent saturation. IC Role / Device Role / Timing Role: Fast-switching clamp limiting op-amp output swing during transient load steps. Use Value: 5 ns trr ensures no timing skew in high-frequency control loops; 10 pF CJ avoids phase margin degradation. |
| RF Detector Input Protection | Logic-Level Signal Steering |
Use Scenario: Protecting sensitive RF detector inputs from ESD and RF overload in wireless sensor nodes. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp between RF input and ground. Use Value: 10 pF CJ preserves high-frequency bandwidth; 2 µA IR prevents DC loading of detector bias network. | Use Scenario: Steering logic signals between multiple microcontroller GPIOs while preventing backfeed. IC Role / Device Role / Timing Role: Passive OR-ing diode in bidirectional signal isolation networks. Use Value: ≤400 mV VF at 10 mA maintains TTL/CMOS logic thresholds; SOT-323 footprint saves PCB area in dense MCU layouts. |
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 NSS40301MR6T5G | Same SOT-323 package; 40 V VRRM, 300 mA IF, 600 mV VF @ 100 mA | Higher reverse voltage rating but higher VF at moderate currents | Preferred when system-level transients exceed 30 V, but less optimal for low-VF critical clamping |
| Diodes Incorporated BAV99LT1G | Dual-series SOT-23 package; 70 V VRRM, 215 mA IF per diode, 1.25 V VF @ 50 mA | Higher VF and dual-diode configuration increases board area and conduction loss | Used where dual-channel protection is needed, but BAT54W RFG offers lower VF and smaller footprint for single-path use |
Compared with NSS40301MR6T5G and BAV99LT1G, BAT54W RFG delivers the lowest forward voltage at sub-30 mA loads and smallest PCB footprint among SOT-323 Schottkys - making it optimal for space-constrained, low-loss clamping in battery-powered systems.
Availability
BAT54W RFG is available at Aetrix Electronics and suitable for USB port protection, DC-DC feedback clamping, RF detector input protection, and logic-level signal steering requiring stable component supply across production volumes.
Supply support for BAT54W RFG 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, analog ICs, and ESD protection components for industrial and consumer applications.
The BAT54W RFG belongs to TSC's high-speed Schottky diode product line, engineered specifically for low-loss, high-frequency clamping and polarity protection in compact, battery-operated electronics.
FAQ
What is the maximum junction temperature rating for BAT54W RFG?
The BAT54W RFG has a maximum junction temperature (TJ max) of 125°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version D2102. This rating applies under continuous operation with appropriate PCB copper pour and ambient conditions. Exceeding 125°C risks parametric drift and long-term reliability degradation in the BAT54W RFG.
Is BAT54W RFG suitable for reverse polarity protection in 5 V USB circuits?
Yes, BAT54W RFG is well-suited for reverse polarity protection in 5 V USB circuits due to its 30 V VRRM rating, ≤500 mV forward voltage at 30 mA, and 600 mA peak surge capability. Its low VF minimizes voltage drop across the BAT54W RFG in normal operation, preserving bus voltage margin for downstream USB peripherals.
Does BAT54W RFG have a halogen-free construction?
Yes, BAT54W RFG is halogen-free in accordance with IEC 61249-2-21 and RoHS compliant, as confirmed in the "Ordering and Marking Information" section of the Taiwan Semiconductor datasheet (Version D2102), where the "G" suffix denotes green compound. This makes BAT54W RFG suitable for environmentally regulated electronics manufacturing.
What is the reverse recovery time (trr) specification for BAT54W RFG?
The BAT54W RFG has a typical reverse recovery time (trr) of 5 ns under test conditions of IF = 10 mA, IR = 10 mA to 1 mA, and RL = 100 Ω - a value confirmed in the Electrical Specifications table of the official datasheet. This trr enables reliable operation in high-frequency switching applications such as RF envelope detection and fast digital signal clamping using BAT54W RFG.
Which package type does BAT54W RFG use, and what are its mounting characteristics?
BAT54W RFG uses the SOT-323 surface-mount package, weighing approximately 5.00 mg, with moisture sensitivity level 1 per J-STD-020. It supports standard lead-free reflow profiles up to 260°C/10s. The BAT54W RFG's three-pin layout (anode, cathode, cathode-connected tab) allows compact placement and automated assembly without special handling requirements.
BAT54W RFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 1 V @ 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
- Operating Temperature - Junction:
- -55°C ~ 150°C
BAT54W RFG FAQ
1.How can I place an order for BAT54W RFG through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54W RFG 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 RFG reliable?
The price and inventory of BAT54W RFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54W RFG is usually 5 days.
3.What payment methods are accepted for BAT54W RFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54W RFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54W RFG?
BAT54W RFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54W RFG 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 RFG?
For technical support, including BAT54W RFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54W RFG requirements.
6.How does Aetrix verify that BAT54W RFG is sourced from the original manufacturer or authorized distributors?
All BAT54W RFG 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 RFG meets industry standards.
7.What is the process for return or replacement of BAT54W RFG?
All BAT54W RFG units undergo pre-shipment inspection (PSI). If there is an issue with BAT54W RFG, 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 RFG part is unused and in its original packaging.
Return procedure for BAT54W RFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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