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Diodes Incorporated BAT42WS-7-F
- Part No.:
- BAT42WS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAT42WS-7-F.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:14,277
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Product details
Overview
BAT42WS-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD323 package, rated for 30 V peak reverse voltage and 200 mA continuous forward current, with typical forward voltage of 0.40 V at 10 mA and 0.65 V at 50 mA. It delivers ultra-fast switching (tRR ≤ 5.0 ns) and low capacitance (CT ≤ 10 pF), enabling use in high-frequency rectification and polarity protection circuits in space-constrained portable electronics.
For engineers reviewing the BAT42WS-7-F datasheet, BAT42WS-7-F pinout, BAT42WS-7-F application, or BAT42WS-7-F equivalent, key selection criteria include its low VF at low IF, thermal resistance (RθJA = 625 °C/W), moisture sensitivity level (MSL 1), and AEC-Q200 readiness for automotive-grade designs requiring robust reliability and lead-free compliance.
Technical Context
This Schottky diode operates via majority-carrier conduction, eliminating minority-carrier storage delay to achieve nanosecond-scale reverse recovery. Its low forward voltage minimizes conduction loss in low-voltage DC/DC bias networks and signal-level clamping paths.
The SOD323 package supports high-density PCB layouts with 0.004 g mass and UL 94V-0 molded plastic housing. Polarity is marked by a cathode band, and terminals are matte tin-plated for reliable solderability per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking capability without breakdown |
| IF (continuous) | 200 mA - Sustained forward current under FR4 board conditions with recommended pad layout |
| VF @ 10 mA | 0.40 V - Low conduction loss in battery-powered logic supply rails and signal clamping |
| tRR | ≤ 5.0 ns - Enables operation in >100 MHz switching applications without tail current |
| CT @ 1 V | ≤ 10 pF - Minimizes capacitive loading on high-speed data lines and RF detector inputs |
| RθJA | 625 °C/W - Thermal performance defined on standard FR4 PCB; derating required above 25°C ambient |
| MSL Level | Level 1 - No floor life limitation; safe for standard reflow without baking |
Pinout & Package
Package: SOD323 - ultra-small plastic surface-mount case (1.30 × 1.70 × 0.95 mm), cathode-band marked, 2-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node in rectifier or clamp path; unmarked end of device body |
| Cathode | Forward current exit / reverse blocking terminal | Identified by cathode band; tied to lower-potential or ground-referenced node |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF = 0.40 V @ 10 mA enables <10 mW conduction loss in 3.3 V rail protection |
| Ultra-fast recovery | tRR ≤ 5.0 ns prevents switching distortion in 50–200 MHz envelope detectors |
| SOD323 footprint | 1.30 × 1.70 mm outline allows placement in <1.5 mm² board area, ideal for wearables |
| Lead-free & Green | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); compliant with RoHS 3 and IATF 16949 |
Applications
| USB Port Polarity Protection | RF Signal Detector Clamp |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and OTG peripherals. IC Role / Device Role / Timing Role: Series-connected Schottky diode providing low-loss forward path and open-circuit reverse isolation. Use Value: 0.40 V VF at 10 mA limits voltage drop to <2% of 5 V bus, preserving downstream regulation margin. | Use Scenario: Clamping RF envelope signals in AM/FM receiver front-ends and IoT sensor transceivers. IC Role / Device Role / Timing Role: Signal-path diode operating in small-signal detection mode with minimal junction capacitance. Use Value: 10 pF CT avoids detuning of 868/915 MHz matching networks while supporting sub-ns transient response. |
| Low-Voltage DC/DC Bias Rail | Automotive LIN Bus Protection |
Use Scenario: Isolating auxiliary bias supplies in PMICs and multi-rail power sequencers. IC Role / Device Role / Timing Role: Reverse-blocking element in OR-ing configuration between dual LDO outputs. Use Value: 30 V VRRM accommodates 24 V automotive transients while 200 mA IF sustains microcontroller core rail loads. | Use Scenario: Transient suppression and polarity safeguard on LIN physical layer interfaces in body control modules. IC Role / Device Role / Timing Role: Primary protection diode placed before LIN transceiver input, rated for 125°C operation. Use Value: -55°C to +125°C TJ range and MSL 1 handling support under-hood deployment with no derating penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54DW-7-F | Dual-channel SOT-363 package; 30 V VRRM, 200 mA IF, but VF = 0.33 V @ 10 mA (lower than BAT42WS) | Requires dual-diode topology; occupies larger area than single SOD323 | Select when dual independent clamps are needed on same net pair |
| NSR0230HT1G | SOD-123 package; 30 V VRRM, 200 mA IF, VF = 0.45 V @ 10 mA, RθJA = 430 °C/W (better thermal dissipation) | Larger footprint (2.9 × 1.3 mm vs. 1.3 × 1.7 mm); less suitable for ultra-dense layouts | Prefer when board space permits and thermal margin is critical over size |
Compared with SBAT54DW-7-F and NSR0230HT1G, BAT42WS-7-F offers the smallest PCB footprint and lowest VF among single-diode SOD323 options, making it optimal for miniaturized consumer and automotive modules where board area and low-loss biasing are prioritized over dual functionality or enhanced thermal performance.
Availability
BAT42WS-7-F is available at Aetrix Electronics and suitable for USB port protection, RF detector clamping, low-voltage DC/DC bias rails, and automotive LIN bus protection requiring stable component supply across production lifecycles.
Supply support for BAT42WS-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 BAT42WS belongs to Diodes' general-purpose Schottky diode product line, engineered for high-efficiency, high-speed rectification and protection in space-constrained, thermally demanding applications including portable electronics and automotive subsystems.
FAQ
What is the maximum junction temperature for BAT42WS-7-F?
The specified operating junction temperature range is -55°C to +125°C. This rating is validated under conditions defined in the datasheet, including FR4 PCB mounting with recommended pad layout and ambient temperature up to 125°C. Derating of forward current is required above 25°C ambient per Figure 4.
Is BAT42WS-7-F qualified for automotive applications?
BAT42WS-7-F is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101, Diodes states that parts meeting automotive change control requirements-including this device-can be qualified upon request with full AEC-Q101 testing and documentation.
How does the SOD323 package affect solder reflow compatibility?
The SOD323 package has Moisture Sensitivity Level 1, meaning it may be stored indefinitely at ≤30°C/60% RH and subjected to standard Pb-free reflow profiles (e.g., JEDEC J-STD-020) without preconditioning or baking. Matte tin plating ensures consistent wetting and joint integrity on OSP- or ENIG-finished boards.
Can BAT42WS-7-F replace BAT54 series diodes in existing designs?
BAT42WS-7-F shares the same 30 V VRRM and 200 mA IF ratings as BAT54 variants but differs in package (SOD323 vs. SOT-23) and forward voltage profile. Its lower VF at low currents improves efficiency in bias rails, though mechanical redesign is required due to different footprint and thermal characteristics.
BAT42WS-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):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAT42WS-7-F FAQ
1.How can I place an order for BAT42WS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT42WS-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 BAT42WS-7-F reliable?
The price and inventory of BAT42WS-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 BAT42WS-7-F is usually 5 days.
3.What payment methods are accepted for BAT42WS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT42WS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT42WS-7-F?
BAT42WS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT42WS-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 BAT42WS-7-F?
For technical support, including BAT42WS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT42WS-7-F requirements.
6.How does Aetrix verify that BAT42WS-7-F is sourced from the original manufacturer or authorized distributors?
All BAT42WS-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 BAT42WS-7-F meets industry standards.
7.What is the process for return or replacement of BAT42WS-7-F?
All BAT42WS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT42WS-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 BAT42WS-7-F part is unused and in its original packaging.
Return procedure for BAT42WS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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