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Taiwan Semiconductor Corporation BAT54SW RFG
- Part No.:
- BAT54SW RFG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54SW RFG.pdf
- Description:
- SOT-323, 30V, 0.2A, SCHOTTKY DIO
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BAT54SW RFG from Taiwan Semiconductor is a 30 V, 200 mA Schottky barrier diode in SOT-323 package, featuring ultra-high-speed switching (trr ≤ 5 ns), low forward voltage (VF ≤ 500 mV at IF = 30 mA), and reverse current ≤ 2 µA at VR = 25 V - used for voltage clamping and reverse polarity protection in portable power management circuits.
For engineers reviewing the BAT54SW RFG datasheet, BAT54SW RFG pinout, BAT54SW RFG application, or BAT54SW RFG equivalent, key selection criteria include reverse recovery time, forward voltage at load-relevant currents, junction capacitance (10 pF @ 1 V), thermal resistance (625 °C/W), and SOT-323 terminal configuration for compact board layout.
Technical Context
This Schottky diode uses a platinum-silicide or similar low-barrier metal-semiconductor junction to achieve fast carrier injection and minimal minority-carrier storage, enabling trr ≤ 5 ns under IF = 10 mA / IR = 10 mA → 1 mA conditions with RL = 100 Ω. Its 10 pF junction capacitance at VR = 1 V / f = 1 MHz supports high-frequency signal routing.
The device operates up to TJ = 125 °C with PD = 200 mW and RθJA = 625 °C/W, requiring careful thermal design in sustained 200 mA operation. Moisture sensitivity level is J-STD-020 Level 1, supporting standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse voltage before breakdown; sets clamping headroom in 24 V systems |
| IF | 200 mA - continuous forward current rating; defines max DC load current without derating |
| trr | 5 ns - reverse recovery time; enables use in >100 MHz switching nodes and ESD transient suppression |
| VF @ 30 mA | ≤ 500 mV - forward drop at moderate load; reduces conduction loss vs. silicon diodes |
| CJ @ 1 V | 10 pF - junction capacitance; limits high-frequency signal distortion in RF bias networks |
| IR @ 25 V | ≤ 2 µA - reverse leakage; ensures low standby power in battery-backed circuits |
| RθJA | 625 °C/W - thermal resistance; requires < 0.32 W power dissipation to stay below TJ max at TA = 25 °C |
Pinout & Package
Package: SOT-323 - surface-mount plastic case, 3-terminal, 1.3 mm × 2.2 mm footprint, 5.0 mg weight, JEDEC-compliant lead-free finish (RoHS/halogen-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in forward-biased operation; must route with low-inductance path for fast switching |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Typically tied to ground or lower-potential rail; serves as clamping reference in protection circuits |
| Collector / Heat Sink (Pin 3) | Internal die substrate connection | Electrically connected to cathode in BAT54SW RFG; provides mechanical stability and minor thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high-speed switching | trr ≤ 5 ns enables use in >100 MHz clock line clamping and USB/PCIe hot-swap protection |
| Low VF at 10–100 mA | VF = 320–1000 mV range minimizes conduction loss in 3.3 V/5 V power rail OR-ing and battery charging paths |
| Junction capacitance control | CJ = 10 pF @ 1 V allows integration into RF detector bias networks without signal detuning |
| High-temperature soldering rating | Rated for 260 °C / 10 s reflow - compatible with standard Pb-free assembly processes |
Applications
| USB Port Protection | Low-Voltage Power OR-ing |
|---|---|
Use Scenario: Prevents backfeed and voltage transients on USB 2.0 data and VBUS lines during plug/unplug events. IC Role / Device Role / Timing Role: BAT54SW RFG acts as bidirectional clamping diode across D+ and D−, and unidirectional reverse-polarity blocker on VBUS. Use Value: 5 ns trr suppresses ESD-induced ringing; 30 V VRRM accommodates 5.25 V VBUS tolerance with margin. | Use Scenario: Selects between two independent 3.3 V supplies (e.g., main + backup) while blocking reverse current. IC Role / Device Role / Timing Role: BAT54SW RFG functions as low-loss, discrete OR-ing diode in each supply path. Use Value: VF ≤ 500 mV at 30 mA reduces voltage drop versus standard silicon diodes, preserving regulation margin. |
| RF Detector Bias Network | Automotive Body Control Module Input Protection |
Use Scenario: Provides DC bias to RF envelope detector diodes while isolating RF signal path from supply noise. IC Role / Device Role / Timing Role: BAT54SW RFG serves as low-capacitance DC feed-through element in bias tee topology. Use Value: CJ = 10 pF avoids loading 2.4 GHz ISM band signals; low IR prevents bias drift over temperature. | Use Scenario: Clamps induced transients on LIN bus or sensor inputs exposed to automotive load-dump pulses. IC Role / Device Role / Timing Role: BAT54SW RFG placed anode-to-line, cathode-to-ground for fast clamp action on negative-going spikes. Use Value: 30 V VRRM handles ISO 7637-2 Pulse 1 (−150 V, 2 Ω source) with external series impedance; 200 mA IF supports surge current sharing. |
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 NSS40201MR6T1G | VRRM = 40 V, VF = 490 mV @ 30 mA, trr = 4 ns, same SOT-323 package | Higher reverse voltage margin; slightly faster recovery | Preferred where 40 V system transients exceed BAT54SW RFG's 30 V rating |
| Diodes Inc. BAV99LT1G | Dual-series configuration, VRRM = 35 V per diode, VF = 1.25 V @ 50 mA, trr = 4 ns | Not single-diode; higher VF increases conduction loss in low-voltage OR-ing | Use only when dual-diode topology matches schematic; avoid for single-diode clamping |
Compared with NSS40201MR6T1G and BAV99LT1G, BAT54SW RFG offers the lowest VF in its class at light-to-moderate loads and is optimized for cost-sensitive, space-constrained 30 V clamping - making it ideal for consumer USB and portable power designs where 30 V margin suffices.
Availability
BAT54SW RFG is available at Aetrix Electronics and suitable for USB port protection, low-voltage power OR-ing, RF detector bias networks, and automotive body control module input protection requiring stable component supply and RoHS/halogen-free compliance.
Supply support for BAT54SW 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The BAT54W/AW/CW/SW family targets high-speed, low-loss discrete protection and switching in space-constrained applications - emphasizing fast recovery, low VF, and robust manufacturability in SOT-323.
FAQ
What is the maximum reverse voltage rating for BAT54SW RFG?
The BAT54SW RFG has a repetitive peak reverse voltage (VRRM) rating of 30 V. This means it can safely block up to 30 V in reverse bias without breakdown under normal operating conditions. Exceeding this voltage risks avalanche conduction or permanent damage. The rating is validated per JEDEC test conditions and applies across the full operating temperature range (–55 °C to +150 °C storage, –40 °C to +125 °C junction).
What is the forward voltage of BAT54SW RFG at 30 mA?
The forward voltage (VF) of BAT54SW RFG is guaranteed ≤ 500 mV at IF = 30 mA and TA = 25 °C. This low VF reduces power loss and heat generation compared to standard silicon diodes, making BAT54SW RFG especially effective in battery-powered and low-voltage OR-ing applications where efficiency is critical.
Is BAT54SW RFG suitable for high-frequency signal path protection?
Yes, BAT54SW RFG is suitable for high-frequency signal path protection due to its 5 ns reverse recovery time (trr) and 10 pF junction capacitance (CJ) at VR = 1 V. These parameters enable effective clamping of fast transients on lines up to ~100 MHz without significant signal attenuation or phase shift - confirmed in RF detector and USB 2.0 interface applications.
What package type does BAT54SW RFG use, and what are its mounting requirements?
BAT54SW RFG uses the SOT-323 package: a 3-pin, surface-mount plastic case measuring 1.3 mm × 2.2 mm. It is rated for lead-free reflow at 260 °C for 10 seconds and classified as J-STD-020 Level 1 for moisture sensitivity - meaning no pre-baking is required prior to assembly. Standard stencil and reflow profiles for small-outline packages apply.
How does BAT54SW RFG differ from BAT54W RFG in electrical performance?
BAT54SW RFG and BAT54W RFG share identical absolute maximum ratings and electrical specifications - including VRRM = 30 V, IF = 200 mA, trr ≤ 5 ns, and VF ≤ 500 mV @ 30 mA. The "S" prefix denotes a specific wafer sort or test bin within the BAT54W family; Taiwan Semiconductor documents no functional or parametric difference between BAT54W RFG and BAT54SW RFG in Version D2102 datasheet.
BAT54SW 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:
- 125°C
BAT54SW RFG FAQ
1.How can I place an order for BAT54SW RFG through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54SW 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 BAT54SW RFG reliable?
The price and inventory of BAT54SW RFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54SW RFG is usually 5 days.
3.What payment methods are accepted for BAT54SW RFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54SW RFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54SW RFG?
BAT54SW RFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54SW 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 BAT54SW RFG?
For technical support, including BAT54SW RFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54SW RFG requirements.
6.How does Aetrix verify that BAT54SW RFG is sourced from the original manufacturer or authorized distributors?
All BAT54SW 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 BAT54SW RFG meets industry standards.
7.What is the process for return or replacement of BAT54SW RFG?
All BAT54SW RFG units undergo pre-shipment inspection (PSI). If there is an issue with BAT54SW 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 BAT54SW RFG part is unused and in its original packaging.
Return procedure for BAT54SW RFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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