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Diodes Incorporated BAS40W-05-7-F
- Part No.:
- BAS40W-05-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS40W-05-7-F.pdf
- Description:
- DIODE ARR SCHOT 40V 200MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,509
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Product details
Overview
BAS40W-05-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT323 package, rated for 40 V peak repetitive reverse voltage, 200 mA forward current, and 5.0 ns reverse recovery time. It delivers low forward voltage drop (380 mV at 1 mA), fast switching, and integrated PN junction guard ring for ESD/transient protection-used in DC-DC converter freewheeling paths, polarity protection circuits, and high-frequency signal clamping.
For engineers reviewing the BAS40W-05-7-F datasheet, BAS40W-05-7-F pinout, BAS40W-05-7-F application, or BAS40W-05-7-F equivalent, key selection criteria include its 40 V VRRM rating, sub-1 V VF performance at 40 mA, 5.0 ns trr, 5.0 pF CT at 0 V, and SOT323 thermal resistance of 625 °C/W-critical for compact power management and RF detector designs.
Technical Context
This Schottky diode uses a platinum-silicide or similar low-barrier metal-semiconductor junction to achieve low forward voltage and fast minority-carrier-free switching. Its guard ring structure suppresses edge breakdown and improves ruggedness against transient overstress.
The device operates across –55 °C to +125 °C with 200 mW power dissipation on FR4 PCB and exhibits 200 nA leakage at 30 V reverse bias. Its 5.0 pF capacitance at 0 V enables use in RF detection and high-speed sampling applications up to ~100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage before avalanche; defines safe operating range in rectifier and clamp roles |
| IF(AV) | 200 mA - Continuous forward current limit; sets maximum steady-state power delivery capability |
| VF @ 1 mA | 380 mV - Low conduction loss at light load; critical for battery-powered signal path efficiency |
| trr | 5.0 ns - Fast recovery enables operation in >10 MHz switching circuits without tail current losses |
| CT @ 0 V | 5.0 pF - Low junction capacitance supports RF detector and high-speed logic interface functions |
| IR @ 30 V | 200 nA - Minimal leakage preserves signal integrity in high-impedance sensing nodes |
| RθJA | 625 °C/W - Thermal resistance on standard FR4 layout; determines temperature rise under 200 mW dissipation |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount package (2.0 × 2.225 × 0.9 mm), moisture sensitivity level 1, matte tin-plated leads, weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in rectification or clamping; polarity marked by cathode band on package top view |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Typically tied to ground or lower-potential rail; forms low-leakage reverse-blocking path when biased negatively |
| Collector/Case (Pin 3) | Thermal and mechanical anchor | Non-electrical terminal; provides mechanical stability and minor heat conduction path via PCB pad |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 380 mV at 1 mA - reduces conduction loss in low-power signal routing and battery-fed circuits |
| Fast switching speed | 5.0 ns trr - enables clean transitions in high-frequency (>10 MHz) sample-and-hold and RF detector stages |
| PN junction guard ring | Integrated edge termination - improves ESD robustness (HBM > 8 kV typical) and transient immunity in noisy environments |
| Ultra-small SOT323 footprint | 2.0 × 2.225 mm outline - saves board space in portable electronics and dense power modules |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and industrial environmental mandates |
Applications
| DC-DC Converter Freewheeling | Reverse Polarity Protection |
|---|---|
Use Scenario: Used as synchronous rectifier or freewheeling diode in 1–5 MHz buck converters powering microcontrollers or sensors. IC Role / Device Role / Timing Role: Schottky diode conducting during low-side switch off-time; handles 200 mA continuous current with minimal VF-induced loss. Use Value: 380 mV VF at 1 mA and 5.0 ns trr reduce switching losses and improve light-load efficiency over silicon PN diodes. | Use Scenario: Placed in series with VIN rail to block reverse supply connection in USB-powered peripherals or field instruments. IC Role / Device Role / Timing Role: Forward-biased conduction path during normal operation; blocks >40 V reverse faults with <200 nA leakage. Use Value: Low 380 mV forward drop minimizes voltage loss across protection element; guard ring ensures reliability during hot-swap transients. |
| RF Signal Detection | High-Speed Logic Clamping |
Use Scenario: Demodulating AM signals or detecting envelope peaks in 10–100 MHz RF front-ends (e.g., RFID readers, sensor transceivers). IC Role / Device Role / Timing Role: Zero-bias or low-bias detector diode; exploits low CT (5.0 pF) and fast trr for broadband response. Use Value: 5.0 pF junction capacitance enables >100 MHz small-signal detection bandwidth; low IR preserves weak signal fidelity. | Use Scenario: Clamping TTL/CMOS logic inputs to prevent overshoot beyond VCC + 0.3 V or undershoot below GND in mixed-signal PCBs. IC Role / Device Role / Timing Role: Fast-turn-on Schottky clamp limiting transient excursions; activated within nanoseconds of overvoltage event. Use Value: 5.0 ns trr and sub-1 V VF ensure clamping action precedes logic gate damage thresholds; guard ring withstands ESD events per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR0540T1G (ON Semiconductor) | Same 40 V VRRM, but SOD-123 package; 0.45 V VF @ 1 mA; 30 pF CT @ 0 V | Higher capacitance limits RF use; larger footprint reduces density | Prefer for cost-sensitive, non-RF power rectification where board space is less constrained |
| NSR0240HT1G (onsemi) | SOT-23 package; 40 V VRRM; 0.43 V VF @ 1 mA; 12 pF CT @ 0 V; 6 ns trr | Slower recovery and higher CT reduce suitability for >50 MHz detection | Choose when SOT-23 handling compatibility is required and RF performance is secondary |
Compared with MBR0540T1G and NSR0240HT1G, BAS40W-05-7-F offers the lowest junction capacitance (5.0 pF) and fastest recovery (5.0 ns) in an ultra-compact SOT323, making it uniquely suited for space-constrained RF and high-frequency digital clamping applications.
Availability
BAS40W-05-7-F is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, reverse polarity protection, and RF signal detection requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for BAS40W-05-7-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 BAS40W series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for low-loss, high-frequency applications including power conversion, signal conditioning, and ESD-hardened interface protection.
FAQ
What is the maximum junction temperature for BAS40W-05-7-F?
The device has an operating junction temperature range of –55 °C to +125 °C. At 200 mW power dissipation on a standard FR4 board, the 625 °C/W thermal resistance results in a 125 °C rise above ambient-so derating is required above 25 °C ambient to stay within the 125 °C TJ limit.
Is BAS40W-05-7-F suitable for automotive applications?
The standard BAS40W-05-7-F is not AEC-Q200 qualified. However, Diodes offers the automotive-grade variant BAS40WQ under a separate datasheet, which meets AEC-Q200 stress testing requirements and is intended for under-hood and infotainment systems.
How does the PN junction guard ring improve reliability?
The integrated guard ring suppresses electric field crowding at the die edge, raising the effective breakdown voltage and improving immunity to electrostatic discharge (ESD) and fast transient bursts. This structure enables >8 kV HBM ESD rating and sustained operation in noisy industrial or portable environments.
Can BAS40W-05-7-F replace a general-purpose 1N4148 in high-speed circuits?
No-it is not a direct replacement. While both are small-signal diodes, the 1N4148 is a fast-switching silicon PN diode (4 ns trr, 100 V VRRM), whereas BAS40W-05-7-F is a Schottky diode (40 V VRRM, 5 ns trr, no reverse recovery charge). Use BAS40W-05-7-F only where low VF and zero minority-carrier storage are required-not for higher-voltage or high-temperature rectification.
BAS40W-05-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 200mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 200 nA @ 30 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAS40W-05-7-F FAQ
1.How can I place an order for BAS40W-05-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40W-05-7-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 BAS40W-05-7-F reliable?
The price and inventory of BAS40W-05-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40W-05-7-F is usually 5 days.
3.What payment methods are accepted for BAS40W-05-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40W-05-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40W-05-7-F?
BAS40W-05-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40W-05-7-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 BAS40W-05-7-F?
For technical support, including BAS40W-05-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40W-05-7-F requirements.
6.How does Aetrix verify that BAS40W-05-7-F is sourced from the original manufacturer or authorized distributors?
All BAS40W-05-7-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 BAS40W-05-7-F meets industry standards.
7.What is the process for return or replacement of BAS40W-05-7-F?
All BAS40W-05-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS40W-05-7-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 BAS40W-05-7-F part is unused and in its original packaging.
Return procedure for BAS40W-05-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS40W-05-7-F Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
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BAV99,215
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BAV70LT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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