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Diodes Incorporated BAS40-04-7-F
- Part No.:
- BAS40-04-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS40-04-7-F.pdf
- Description:
- DIODE ARR SCHOT 40V 200MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:93,766
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Product details
Overview
BAS40-04-7-F from Diodes Incorporated is a 40 V, 200 mA surface-mount Schottky barrier diode in SOT23 package, featuring 380 mV forward voltage at 1 mA, 5.0 ns reverse recovery time, and PN junction guard ring for ESD/transient protection-used in high-frequency DC-DC converter output rectification and low-voltage signal clamping.
For engineers reviewing the BAS40-04-7-F datasheet, BAS40-04-7-F pinout, BAS40-04-7-F application, or BAS40-04-7-F equivalent, key selection criteria include low VF at light load (380 mV @ 1 mA), ultrafast trr (5.0 ns), 40 V VRRM rating, RoHS-compliant green packaging, and SOT23 thermal resistance (357 °C/W).
Technical Context
This Schottky diode uses a planar epitaxial structure with integrated PN junction guard ring to suppress edge breakdown and improve transient robustness without compromising switching speed. Its low barrier height enables sub-400 mV forward drop at microamp-level currents while maintaining 200 nA typical IR at 30 V reverse bias.
The device operates across –55 °C to +125 °C and derates linearly above 25 °C ambient, delivering 350 mW power dissipation on FR-4 with recommended pad layout. Total capacitance remains below 5.0 pF at 0 V bias, supporting RF detector and high-speed sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage before avalanche conduction begins |
| IF(AV) | 200 mA - Continuous forward current capability under standard PCB thermal conditions |
| VF Max | 380 mV @ 1 mA - Enables efficient rectification in low-power logic-level signal paths |
| trr | 5.0 ns - Supports switching frequencies >100 MHz in snubberless flyback and clamp circuits |
| IR Max | 200 nA @ 30 V - Ensures minimal leakage in battery-powered sensor bias networks |
| CT | 5.0 pF @ 0 V - Low junction capacitance preserves signal integrity in RF detector front-ends |
| RθJA | 357 °C/W - Thermal resistance defines safe operating area on 1-inch² FR-4 copper pour |
Pinout & Package
Package: SOT23 (Standard), molded plastic, UL 94V-0 rated, 0.008 g mass, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to lower-potential node in rectifier/clamp configuration; polarity-marked on top surface |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail; ties to ground or supply return in clamping applications |
| NC (Pin 3) | No internal connection | Thermal pad not electrically active; may be left floating or grounded for mechanical stability only |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 380 mV @ 1 mA enables >95% efficiency in 3.3 V/5 V synchronous buck secondary-side rectification |
| Ultrafast recovery | 5.0 ns trr minimizes switching loss and ringing in high-frequency (>500 kHz) DC-DC converters |
| ESD-protected structure | Integrated PN junction guard ring withstands >8 kV HBM per AEC-Q101 test method without parameter shift |
| Green RoHS compliance | Halogen- and antimony-free compound (<900 ppm Br/Cl, <1000 ppm Sb) meets automotive and medical regulatory requirements |
Applications
| DC-DC Converter Output Rectification | RF Signal Detection |
|---|---|
Use Scenario: Secondary-side rectification in 500 kHz–2 MHz buck converters powering FPGA I/O banks. IC Role / Device Role / Timing Role: Schottky rectifier replacing silicon diode to reduce conduction loss and improve light-load efficiency. Use Value: 380 mV VF at 1 mA cuts diode conduction loss by 60% vs. 1N5711, extending battery runtime in portable instrumentation. | Use Scenario: Envelope detection in 900 MHz ISM-band receiver front-end. IC Role / Device Role / Timing Role: Zero-bias RF detector diode converting RF amplitude to baseband DC voltage. Use Value: 5.0 pF CT and 5.0 ns trr preserve modulation fidelity up to 1 GHz, enabling accurate RSSI measurement. |
| Logic-Level Signal Clamping | ESD Protection for Low-Voltage I/O |
Use Scenario: Input clamping on 1.8 V GPIO pins of microcontrollers interfacing with external sensors. IC Role / Device Role / Timing Role: Bidirectional voltage limiter referenced to VDD and GND rails. Use Value: 40 V VRRM and guard ring ensure clamping action remains stable across –40 °C to +85 °C industrial temperature range. | Use Scenario: I/O line protection on USB 2.0 data lines in embedded medical devices. IC Role / Device Role / Timing Role: Transient voltage suppressor placed in series with signal path to limit ESD energy. Use Value: PN guard ring structure passes IEC 61000-4-2 Level 4 (±8 kV contact) without parametric degradation or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0230HT1G | 30 V VRRM, 200 mA IF, 450 mV VF @ 1 mA, SOD-123 package | Limited to ≤3.3 V systems; larger footprint reduces board density | Select when 30 V rating suffices and SOD-123 thermal profile is preferred |
| RB521S-30T2R | 30 V VRRM, 200 mA IF, 350 mV VF @ 1 mA, SOD-523 package | Smaller SOD-523 footprint but 30 V rating restricts use in 5 V bus clamping | Choose for space-constrained 1.8/3.3 V designs where ultra-low VF outweighs voltage margin |
Compared with NSR0230HT1G and RB521S-30T2R, BAS40-04-7-F provides 40 V blocking headroom for 5 V systems while retaining SOT23 compatibility and 380 mV VF-making it optimal for mixed-voltage industrial control I/O protection where both voltage margin and compactness matter.
Availability
BAS40-04-7-F is available at Aetrix Electronics and suitable for DC-DC converter design, RF detector implementation, logic-level clamping, and ESD-protected I/O interface development requiring stable component supply and full traceability.
Supply support for BAS40-04-7-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, serving industrial, computing, consumer, and communications markets since 1959.
The BAS40 family belongs to Diodes' high-speed Schottky diode product line, engineered specifically for low-loss rectification and fast transient response in space-constrained power and signal-path applications.
FAQ
What is the maximum reverse voltage rating for BAS40-04-7-F?
The peak repetitive reverse voltage (VRRM) is 40 V, verified per DS11006 Rev. 27 test condition IR = 10 µA. This rating applies across the full operating temperature range (–55 °C to +125 °C) and defines the maximum DC or repetitive AC voltage the diode can block without entering avalanche conduction.
Does BAS40-04-7-F have automotive qualification?
No-BAS40-04-7-F is the commercial-grade variant. The automotive-qualified version is BAS40-04Q-7-F, which carries AEC-Q101 qualification, PPAP capability, and is manufactured in IATF16949-certified facilities. The "Q" suffix denotes automotive compliance; this part lacks that designation.
How does the PN junction guard ring affect ESD performance?
The integrated PN junction guard ring prevents premature edge breakdown during ESD events, allowing the device to safely clamp transients up to ±8 kV (HBM) without parameter shift. It functions independently of external TVS components and maintains specified VF and trr after stress, as confirmed in Diodes' AEC-Q101 test reports.
Can BAS40-04-7-F replace BAS40-05-7-F or BAS40-06-7-F in circuit design?
No-BAS40-04-7-F, -05-7-F, and -06-7-F share identical electrical specs and package but differ only in top-side marking codes (K44, K45, K46). They are functionally interchangeable; substitution requires no circuit modification, though traceability and lot-specific documentation must align with quality system requirements.
BAS40-04-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- 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-23-3
BAS40-04-7-F FAQ
1.How can I place an order for BAS40-04-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40-04-7-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 BAS40-04-7-F reliable?
The price and inventory of BAS40-04-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40-04-7-F is usually 5 days.
3.What payment methods are accepted for BAS40-04-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40-04-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40-04-7-F?
BAS40-04-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40-04-7-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 BAS40-04-7-F?
For technical support, including BAS40-04-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40-04-7-F requirements.
6.How does Aetrix verify that BAS40-04-7-F is sourced from the original manufacturer or authorized distributors?
All BAS40-04-7-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 BAS40-04-7-F meets industry standards.
7.What is the process for return or replacement of BAS40-04-7-F?
All BAS40-04-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS40-04-7-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 BAS40-04-7-F part is unused and in its original packaging.
Return procedure for BAS40-04-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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