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Diodes Incorporated B380B-13-F
- Part No.:
- B380B-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B380B-13-F.pdf
- Description:
- DIODE SCHOTTKY 80V 3A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:7,167
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Product details
Overview
B380B-13-F from Diodes Incorporated is a 3.0A, 80V surface-mount Schottky barrier rectifier in SMB package, featuring 0.69V forward voltage at 3.0A/100°C, 100A non-repetitive surge rating, and 120pF typical junction capacitance at 4V - deployed in DC-DC converter freewheeling paths and low-voltage polarity protection circuits.
For engineers reviewing the B380B-13-F datasheet, B380B-13-F pinout, B380B-13-F application, or B380B-13-F equivalent, key selection criteria include forward voltage drop at elevated temperature, thermal resistance (10°C/W junction-to-terminal), peak reverse leakage (20mA at 80V/100°C), and RoHS-compliant matte tin plating for lead-free reflow compatibility.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain reliable operation under repetitive 8.3ms half-sine surge events up to 100A. Its low VF and fast switching enable high-efficiency power conversion in compact 125°C-rated designs.
Designed for automated SMT assembly, it meets J-STD-020 Level 1 moisture sensitivity and withstands 260°C/10s soldering. The cathode band polarity marking and UL 94V-0 molded plastic case ensure consistent orientation and flame-retardant reliability in board-level integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 80 V - defines maximum DC or repetitive AC reverse bias before breakdown in polarity protection or flyback clamp applications |
| Avg. Forward Current | 3.0 A @ TT = 125°C - continuous conduction capability with terminal heat sinking, derated linearly below 125°C per Fig. 4 |
| Forward Voltage Drop | 0.69 V @ 3.0A, 100°C - enables <1W conduction loss per diode in 5–12V output buck converters |
| Surge Current Rating | 100 A (8.3ms half-sine) - withstands inrush and fault transients without metallization failure |
| Junction-to-Terminal Rθ | 10 °C/W - supports direct PCB copper pad thermal coupling for passive cooling in space-constrained layouts |
| Reverse Leakage | 20 mA @ 80V, 100°C - limits standby power loss in always-on 12V automotive subsystems |
| Total Capacitance | 120 pF @ 4V, 1MHz - minimizes high-frequency switching noise coupling in >100kHz SMPS designs |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with UL 94V-0 flammability rating, cathode band polarity marking, and matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., switch node in buck converter or ground return in polarity protection) |
| Cathode | Current exit point during forward conduction; marked with band/notch | Connected to higher-potential rail (e.g., output capacitor positive or input supply in reverse-battery protection) |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche and improves transient robustness without external TVS clamping |
| Low VF at high temperature | 0.69V @ 3.0A/100°C reduces thermal runaway risk in thermally dense power stages |
| Lead-free & halogen-free | Meets RoHS Directive 2002/95/EC and JEDEC J-STD-020 Level 1 for green manufacturing compliance |
| High-temp solder tolerance | Rated for 260°C/10s reflow - compatible with standard Pb-free assembly profiles |
| 125°C terminal temperature rating | Enables full 3.0A current delivery with minimal PCB copper area when terminals are actively cooled |
Applications
| DC-DC Converter Freewheeling | Automotive Reverse-Battery Protection |
|---|---|
Use Scenario: Used as synchronous rectifier or freewheeling diode in 5–12V buck converters powering infotainment or ADAS ECUs. IC Role / Device Role / Timing Role: Schottky rectifier conducting during low-side MOSFET off-time to complete inductor current path. Use Value: 0.69V VF at 100°C cuts conduction loss by ~35% vs. standard PN diodes, improving efficiency and reducing heatsink need. | Use Scenario: Placed in series with battery input to prevent damage from accidental reverse connection in 12V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional current gate blocking reverse polarity while passing normal load current. Use Value: 80V VRRM withstands load dump transients; 100A IFSM handles jump-start surges without failure. |
| Low-Voltage Polarity Clamp | High-Frequency Inverter Output |
Use Scenario: Integrated into USB-C PD adapter secondary side to clamp reverse voltage on output capacitors during hot-plug events. IC Role / Device Role / Timing Role: Fast-recovery clamp diode limiting negative excursion across output filter caps. Use Value: 120pF CT minimizes capacitive loading on feedback loop; 0.79V VF at 25°C ensures tight voltage regulation margin. | Use Scenario: Employed in 20–100kHz resonant LLC inverter outputs for LED drivers and industrial lighting. IC Role / Device Role / Timing Role: High-speed rectification of high-frequency AC waveform into regulated DC bus. Use Value: Low stored charge and absence of minority-carrier tail current enable clean zero-current switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS38-E3/57T (Vishay) | Same SMB package, 3.0A/80V, but VF = 0.87V @ 3A/25°C - 12% higher conduction loss | Higher VF increases thermal stress in high-ambient environments (>85°C) | Select when legacy design validation exists and thermal margin exceeds 15°C |
| SB380-E3/57T (Vishay) | Identical electrical specs and SMB footprint; RoHS-compliant matte tin finish | No functional difference - direct second-source with identical thermal and electrical behavior | Preferred for dual-sourcing programs requiring no layout or qualification change |
Compared with SS38-E3/57T, B380B-13-F delivers lower forward voltage at elevated temperature, improving thermal headroom in automotive under-hood applications; versus SB380-E3/57T, it offers identical performance with documented Diodes Incorporated quality traceability and extended lifecycle support.
Availability
B380B-13-F is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, automotive reverse-battery protection, and high-frequency inverter output applications requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for B380B-13-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 B380B belongs to Diodes' surface-mount Schottky rectifier product line, engineered specifically for high-efficiency, low-VF power conversion in space-constrained consumer, computing, and automotive applications.
FAQ
What is the maximum junction temperature for B380B-13-F?
The B380B-13-F has an operating junction temperature range of –55°C to +150°C. Its rated 3.0A average forward current assumes terminal temperature (TT) of 125°C, with thermal resistance RθJT = 10°C/W. Exceeding 150°C risks permanent parametric shift or metallization failure.
Is B380B-13-F suitable for use in automotive under-hood applications?
Yes - its –55°C to +150°C operating range, 100A surge rating, and RoHS/halogen-free construction meet AEC-Q101 stress test requirements when qualified per Diodes' automotive-grade variants. Standard B380B-13-F is widely used in non-safety-critical under-hood modules like body control units and lighting drivers.
How does the guard ring die construction improve reliability?
The guard ring structure surrounds the active Schottky junction to distribute electric field gradients at the silicon edge, preventing premature avalanche breakdown during voltage transients. This eliminates need for external clamping in many 12V/24V systems and extends lifetime under repetitive surge conditions.
Can B380B-13-F replace a standard PN rectifier in an existing design?
Yes, provided reverse voltage and surge requirements are met. Its lower VF reduces conduction loss and self-heating, but its higher reverse leakage (vs. PN diodes) may increase standby current in ultra-low-power systems. Layout must retain SMB footprint and thermal pad design rules per Diodes' suggested pad layout.
B380B-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 80 V
- Capacitance @ Vr, F:
- 120pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B380B-13-F FAQ
1.How can I place an order for B380B-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B380B-13-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 B380B-13-F reliable?
The price and inventory of B380B-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B380B-13-F is usually 5 days.
3.What payment methods are accepted for B380B-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B380B-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B380B-13-F?
B380B-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B380B-13-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 B380B-13-F?
For technical support, including B380B-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B380B-13-F requirements.
6.How does Aetrix verify that B380B-13-F is sourced from the original manufacturer or authorized distributors?
All B380B-13-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 B380B-13-F meets industry standards.
7.What is the process for return or replacement of B380B-13-F?
All B380B-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B380B-13-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 B380B-13-F part is unused and in its original packaging.
Return procedure for B380B-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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