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Diodes Incorporated B320A-13-F
- Part No.:
- B320A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B320A-13-F.pdf
- Description:
- DIODE SCHOTTKY 20V 3A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:113,552
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Product details
Overview
B320A-13-F from Diodes Incorporated is a 20 V, 3.0 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.50 V max forward voltage at 3 A and 0.5 mA max reverse leakage at rated voltage, optimized for low-voltage DC-DC converters and polarity protection circuits.
For engineers reviewing the B320A-13-F datasheet, B320A-13-F pinout, B320A-13-F application, or B320A-13-F equivalent, key selection criteria include forward voltage drop at full load, thermal resistance (140 °C/W junction-to-ambient), reverse leakage at elevated temperature, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and supports high-frequency switching up to several MHz due to low junction capacitance (200 pF at 4 V). Its low VF enables reduced conduction loss in synchronous rectification paths.
Designed for operation from –55 °C to +150 °C, it delivers 3.0 A average forward current at terminal temperature ≤100 °C and withstands 80 A non-repetitive surge current (8.3 ms half-sine), making it suitable for inductive load freewheeling and input rectification in compact power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC bus or output rail voltage rating. |
| IO | 3.0 A @ TT = +100°C - Continuous average forward current capability under thermal-limited conditions on standard PCB layout. |
| VF (max) | 0.50 V @ IF = 3.0 A, TA = +25°C - Directly determines conduction loss (1.5 W max at full load) and thermal rise in high-current paths. |
| IR (max) | 0.5 mA @ VRRM, TA = +25°C - Low leakage preserves efficiency in battery-powered or standby-critical systems. |
| RθJA | 140 °C/W - Junction-to-ambient thermal resistance on FR-4 board with minimum pad layout; defines required heatsinking margin. |
| CT | 200 pF @ VR = 4 V, f = 1 MHz - Low capacitance minimizes switching loss and EMI in high-frequency (>100 kHz) converter topologies. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte-tin lead finish, cathode band marking, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node) in freewheeling or reverse-polarity protection configurations. |
| Cathode | Forward current exit point | Marked with band; connects to higher-potential rail (e.g., input VBUS or output rail); blocks reverse current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances transient immunity by preventing edge breakdown during voltage spikes, critical in automotive load-dump environments. |
| AEC-Q101 qualification | Validated for automotive electronics use, including engine control modules and body electronics requiring high reliability. |
| Lead-free, halogen-free "Green" compound | Complies with RoHS 2 and JEDEC J-STD-020; eliminates hazardous substances without compromising thermal or mechanical performance. |
| Low thermal resistance (RθJT = 25 °C/W) | Enables efficient heat transfer from junction to PCB pad, supporting sustained 3 A operation without external heatsink. |
Applications
| DC-DC Converter Output Rectification | Polarity Protection Circuit |
|---|---|
Use Scenario: Used as secondary-side rectifier in 5 V/3.3 V buck converters operating at 300–500 kHz. IC Role / Device Role / Timing Role: Schottky rectifier replacing diode in synchronous or quasi-synchronous topology to minimize conduction loss. Use Value: 0.50 V VF reduces power loss by ~40% vs. standard PN diode, improving efficiency from 88% to 92% at 3 A load. | Use Scenario: Placed in series with power input to prevent damage from reversed battery or supply connection. IC Role / Device Role / Timing Role: Unidirectional current gate ensuring only forward-biased conduction path exists. Use Value: Low 0.50 V forward drop limits voltage penalty to <2% in 24 V systems, preserving headroom for downstream regulators. |
| Automotive Body Control Module | Industrial Sensor Power Supply |
Use Scenario: Freewheeling path for relay or solenoid coil drive in BCM power distribution units. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive kickback energy during switch-off transitions. Use Value: 80 A IFSM rating handles typical 50–70 A surge peaks; AEC-Q101 ensures lifetime reliability over 15-year vehicle service life. | Use Scenario: Input protection and reverse-blocking element in 12 V sensor node power rails exposed to field wiring errors. IC Role / Device Role / Timing Role: Standby-mode blocking device maintaining zero reverse current during system sleep. Use Value: 0.5 mA IR at 25 °C and 20 mA at 100 °C prevents battery drain in always-on IoT sensors with multi-year battery life targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS32-E3/57T (Vishay) | Same 20 V VRRM and 3 A IO, but VF = 0.52 V (max), RθJA = 120 °C/W, no AEC-Q101 rating. | Not qualified for automotive use; better thermal performance on copper-clad boards. | Select when cost sensitivity outweighs automotive qualification and board layout allows tighter thermal management. |
| MBR320RLG (ON Semiconductor) | 20 V VRRM, 3 A IO, VF = 0.54 V (max), RθJA = 130 °C/W, AEC-Q101 qualified, but larger DO-214AA package. | Requires more PCB area; slightly higher VF increases conduction loss by ~8% at full load. | Select when legacy board space accommodates DO-214AA and supply chain favors ON Semi's long-term availability. |
Compared with SS32-E3/57T and MBR320RLG, B320A-13-F offers the lowest VF among AEC-Q101-qualified 20 V/3 A Schottkys and the smallest footprint (SMA), enabling higher power density in space-constrained automotive and industrial modules.
Availability
B320A-13-F is available at Aetrix Electronics and suitable for DC-DC converters, polarity protection circuits, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for B320A-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, specializing in high-efficiency power management, signal integrity, and protection solutions.
The B320A-13-F belongs to the B320A–B360A Schottky rectifier family, engineered for low-loss, high-reliability rectification in automotive, industrial, and consumer power systems where thermal efficiency and transient robustness are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The B320A-13-F has a specified operating junction temperature range of –55 °C to +150 °C. For continuous 3.0 A operation, terminal temperature must be held at or below +100 °C per the derating curve, which corresponds to a maximum allowable ambient temperature of approximately +65 °C on a standard FR-4 board with minimum pad layout.
Is this part suitable for reflow soldering?
Yes, the B320A-13-F is qualified for lead-free reflow soldering per JEDEC J-STD-020. Its matte-tin plating is compatible with peak temperatures up to 260 °C for 10 seconds, and its moisture sensitivity level is rated at Level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking prior to assembly.
Does the cathode band indicate pin 1 or polarity orientation?
The cathode band marks the cathode terminal - not pin 1 - and indicates the direction of forward current flow (anode to cathode). In the SMA package, the banded end is the cathode; the opposite end is the anode. This marking aligns with industry-standard polarity identification for surface-mount diodes and must be oriented correctly during PCB layout to ensure proper circuit function.
How does the guard ring structure improve reliability?
The guard ring die construction surrounds the active junction with a doped region that controls electric field distribution at the silicon edge, preventing premature avalanche breakdown during voltage transients such as load dump or ISO 7637-2 pulses. This design extends operational lifetime in automotive environments where repetitive 40–60 V spikes occur, and is verified through AEC-Q101 stress testing including HTRB and HTGB.
B320A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- 200pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
B320A-13-F FAQ
1.How can I place an order for B320A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B320A-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 B320A-13-F reliable?
The price and inventory of B320A-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 B320A-13-F is usually 5 days.
3.What payment methods are accepted for B320A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B320A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B320A-13-F?
B320A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B320A-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 B320A-13-F?
For technical support, including B320A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B320A-13-F requirements.
6.How does Aetrix verify that B320A-13-F is sourced from the original manufacturer or authorized distributors?
All B320A-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 B320A-13-F meets industry standards.
7.What is the process for return or replacement of B320A-13-F?
All B320A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B320A-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 B320A-13-F part is unused and in its original packaging.
Return procedure for B320A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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