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Diodes Incorporated BAT54WS-7-F
- Part No.:
- BAT54WS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAT54WS-7-F.pdf
- Description:
- DIODE SCHOTTKY 30V 100MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:57,065
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Product details
Overview
BAT54WS-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD323 package, rated for 30 V peak reverse voltage, 100 mA average forward current, and 1000 mV max forward voltage at 100 mA. It delivers ultra-fast 5.0 ns reverse recovery time and 2.0 µA max reverse leakage at 25 V, enabling use in reverse polarity protection and freewheeling paths in compact DC/DC converters.
For engineers reviewing the BAT54WS-7-F datasheet, BAT54WS-7-F pinout, BAT54WS-7-F application, or BAT54WS-7-F equivalent, key selection criteria include low VF at low IF (240 mV @ 0.1 mA), minimal junction capacitance (10 pF @ 1 V), thermal resistance of 625 °C/W, AEC-Q101 qualification for automotive-grade reliability, and RoHS-compliant lead-free plating.
Technical Context
The BAT54WS-7-F employs a planar Schottky junction with PN guard ring for ESD and transient robustness. Its low forward voltage drop stems from optimized metal-semiconductor interface design, not silicon P-N junction behavior.
Thermal performance is defined for FR-4 PCB mounting per recommended pad layout; power derating begins above 25°C ambient, reaching zero dissipation at +150°C. Junction-to-ambient thermal resistance (625 °C/W) reflects its ultra-small SOD323 footprint and lack of thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum blocking voltage before avalanche conduction in reverse bias |
| IO | 100 mA - Continuous DC forward current rating under standard PCB thermal conditions |
| VF (max) | 1000 mV @ 100 mA - Ensures minimal conduction loss in low-power switching paths |
| tRR | 5.0 ns - Enables operation in high-frequency (>10 MHz) flyback and clamp circuits |
| CT | 10 pF @ 1 V - Low capacitance preserves signal integrity in RF detector and sampling applications |
| IR (max) | 2.0 µA @ 25 V - Supports battery-powered systems requiring nanoamp-level standby leakage |
| RθJA | 625 °C/W - Defines thermal limit for 200 mW max power dissipation on standard FR-4 |
Pinout & Package
Package: SOD323 - ultra-compact 2-pin surface-mount plastic package (1.30 × 1.70 × 0.95 mm), cathode marked by band on top surface, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side in reverse polarity protection; requires low-inductance trace routing |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to system ground or higher-potential rail in protection topology |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high-speed switching | 5.0 ns tRR enables use in >20 MHz DC/DC controller feedback loops without timing skew |
| PN junction guard ring | Provides IEC 61000-4-2 Level 4 ESD immunity (±8 kV contact) without external TVS |
| SOD323 footprint | 0.004 g mass and 1.30 × 1.70 mm area support space-constrained wearables and IoT sensors |
| AEC-Q101 qualification | Validated for automotive body electronics including LED lighting drivers and LIN bus protection |
Applications
| Reverse Polarity Protection | High-Frequency Freewheeling |
|---|---|
Use Scenario: Protecting 3.3 V or 5 V microcontroller power rails from accidental battery reversal in portable medical devices. IC Role / Device Role: Series-connected Schottky diode placed between input connector and LDO regulator input. Use Value: 240 mV forward drop at 0.1 mA ensures <1% voltage loss during startup; 2 µA leakage prevents battery drain over 10-year shelf life. | Use Scenario: Snubbing inductive kickback from solenoid drivers in automotive door lock actuators. IC Role / Device Role: Freewheeling path across 12 V coil to clamp back-EMF spikes during MOSFET turn-off. Use Value: 5 ns tRR minimizes energy dissipation during rapid current reversal; 30 V VRRM exceeds typical 12 V system transients. |
| RF Signal Detection | Low-Power Logic-Level Clamping |
Use Scenario: Demodulating 2.4 GHz ISM-band envelope signals in Bluetooth LE beacon receivers. IC Role / Device Role: Passive detector diode feeding baseband amplifier input after matching network. Use Value: 10 pF CT avoids loading 50 Ω RF path; sub-320 mV VF at 1 mA enables detection of -20 dBm signals. | Use Scenario: Limiting GPIO voltage excursions on 1.8 V I²C lines interfacing with 3.3 V peripherals. IC Role / Device Role: Clamp diode from SDA line to 1.8 V rail, shunting overvoltage transients. Use Value: Guard ring structure withstands ±8 kV ESD events; 240 mV forward threshold prevents false logic transitions during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54SWT5G | Same SOD-323 package, 30 V VRRM, but 300 mV lower typical VF at 10 mA (220 mV vs 520 mV) | Better efficiency in 10–100 mA continuous forward conduction; slightly higher IR (5 µA @ 25 V) | Select when minimizing conduction loss outweighs leakage sensitivity |
| BAT54C-7-F | Dual common-cathode configuration in SOT-23; identical per-diode specs but shared cathode terminal | Enables dual-rail protection or dual-path clamping in same footprint; requires board redesign for single-diode use | Select only when dual-diode functionality is required; not drop-in compatible |
Compared with SBAT54SWT5G and BAT54C-7-F, the BAT54WS-7-F offers optimal balance of ultra-low leakage (2 µA), proven AEC-Q101 qualification, and single-diode simplicity-making it preferred for battery-critical and automotive body electronics where reliability and standby current dominate trade-offs.
Availability
BAT54WS-7-F is available at Aetrix Electronics and suitable for reverse polarity protection, high-frequency freewheeling, and RF signal detection requiring stable component supply across industrial control, automotive body electronics, and portable medical device production programs.
Supply support for BAT54WS-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BAT54WS belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for space-constrained, low-leakage, and fast-switching applications in automotive, industrial, and portable electronics.
FAQ
What is the maximum operating temperature for BAT54WS-7-F?
The BAT54WS-7-F has an operating junction temperature range of –65°C to +150°C. Its thermal resistance (RθJA) is 625°C/W on standard FR-4 PCB, meaning it reaches thermal shutdown at +150°C ambient when dissipating 200 mW. Derating curves show usable power drops linearly above 25°C ambient.
Is BAT54WS-7-F suitable for automotive applications?
Yes-the BAT54WSQ-7-F variant is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. While BAT54WS-7-F shares identical electrical and mechanical specs, only the "Q" suffix denotes formal automotive qualification. For non-safety-critical body electronics, the standard version is widely used with customer validation.
How does the PN guard ring improve robustness?
The integrated PN guard ring surrounds the Schottky junction to suppress edge breakdown and distribute electric field stress. This structure enables the device to withstand IEC 61000-4-2 Level 4 ESD (±8 kV contact) and improves surge immunity without external protection components, verified per Diodes' internal qualification testing.
What is the recommended pad layout for SOD323 mounting?
Diodes specifies X = 0.590 mm, X1 = 2.700 mm, and Y = 0.450 mm for SOD323 copper pads. These dimensions ensure reliable solder joint formation while maintaining thermal performance and avoiding tombstoning. Full outline drawings and land patterns are published at diodes.com/package-outlines.html.
BAT54WS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 100mA
- 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:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 150°C
BAT54WS-7-F FAQ
1.How can I place an order for BAT54WS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54WS-7-F 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 BAT54WS-7-F reliable?
The price and inventory of BAT54WS-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54WS-7-F is usually 5 days.
3.What payment methods are accepted for BAT54WS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54WS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54WS-7-F?
BAT54WS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54WS-7-F 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 BAT54WS-7-F?
For technical support, including BAT54WS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54WS-7-F requirements.
6.How does Aetrix verify that BAT54WS-7-F is sourced from the original manufacturer or authorized distributors?
All BAT54WS-7-F 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 BAT54WS-7-F meets industry standards.
7.What is the process for return or replacement of BAT54WS-7-F?
All BAT54WS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT54WS-7-F, 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 BAT54WS-7-F part is unused and in its original packaging.
Return procedure for BAT54WS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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