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Diodes Incorporated B320Q-13-F
- Part No.:
- B320Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B320Q-13-F.pdf
- Description:
- DIODE SCHOTTKY 20V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,911
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Product details
Overview
B320Q-13-F from Diodes Incorporated is a 20 V, 3.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.5 V max forward voltage at 3.0 A and 0.5 mA max reverse leakage at rated VR, designed for automotive polarity protection and freewheeling applications.
For engineers reviewing the B320Q-13-F datasheet, B320Q-13-F pinout, B320Q-13-F application, or B320Q-13-F equivalent, key selection criteria include its AEC-Q101 qualification, 20 V VRRM rating, low VF for efficiency-critical 12 V automotive circuits, and SMC package thermal performance (RθJT = 20 °C/W).
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness in automotive environments. Its low 0.5 V forward voltage drop at 3.0 A enables high-efficiency operation in low-voltage DC systems, while the 20 V peak repetitive reverse voltage supports standard 12 V nominal battery rail applications with margin.
The device operates across –55 °C to +150 °C junction temperature range and is manufactured in IATF 16949 certified facilities. It exhibits 200 pF typical junction capacitance at 4 V reverse bias and 100 A non-repetitive surge current capability under 8.3 ms half-sine wave conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Withstands up to 20 V reverse voltage without breakdown; suitable for 12 V automotive systems with load dump margin. |
| IO(AV) | 3.0 A - Continuous average forward current rating at TA = 25 °C; derated above 25 °C per Fig. 6. |
| VF(max) | 0.50 V - Maximum forward voltage at IF = 3.0 A and TA = 25 °C; minimizes conduction loss in power paths. |
| IR(max) | 0.5 mA - Maximum reverse leakage at rated VR and TA = 25 °C; ensures low standby power in always-on modules. |
| RθJT | 20 °C/W - Junction-to-terminal thermal resistance; enables direct heatsinking via PCB copper pad for thermal management. |
| IFSM | 100 A - Non-repetitive peak forward surge current (8.3 ms half-sine); handles inrush and inductive kick events. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic with matte tin-plated terminals, cathode band marking, 0.21 g weight, UL 94V-0 rated compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in polarity protection; accepts input during forward conduction. |
| Cathode | Forward current exit point | Marked with band; connected to higher-potential side (e.g., battery +12 V); blocks reverse current flow when biased negatively. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity for automotive-grade reliability without external clamping components. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Lead-free, halogen/antimony-free | Complies with RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb). |
| Low RθJA (90 °C/W) | Enables operation at full 3.0 A current on standard FR-4 with 2 mm × 3 mm copper pad, reducing need for oversized layouts. |
Applications
| Automotive Polarity Protection | DC-DC Converter Freewheeling |
|---|---|
Use Scenario: Protects infotainment head units and body control modules from reverse battery connection during service. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed in series with main power input to prevent damage from –12 V transients. Use Value: 0.5 V VF minimizes voltage drop and heat generation at 3 A continuous load, preserving system efficiency and thermal margin. | Use Scenario: Used in synchronous buck converter output stage to recirculate inductor current during low-side switch off-time. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy recovery; operates at high frequency with minimal switching loss. Use Value: 200 pF junction capacitance and fast recovery enable stable operation up to 500 kHz without excessive ringing or EMI. |
| Engine Control Unit (ECU) Power Rail | LED Lighting Load Protection |
Use Scenario: Isolates auxiliary 5 V/3.3 V regulator inputs from main 12 V supply in engine bay ECUs exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Input protection diode ensuring power integrity during cold cranking (–40 °C) and hot idle (+125 °C junction). Use Value: –55 °C to +150 °C operating range and AEC-Q101 qualification guarantee functional reliability across full automotive temperature profile. | Use Scenario: Prevents reverse current flow from LED driver outputs back into supply during fault conditions in exterior lighting modules. IC Role / Device Role / Timing Role: Reverse-blocking element in parallel with LED string to avoid unintended illumination or driver latch-up. Use Value: 0.5 mA IR max at 25 °C ensures negligible standby current drain, critical for battery-powered daytime running lights (DRL). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB320-E3/52 (Vishay) | Same 20 V VRRM, 3 A IO, but VF = 0.52 V (typ) at 3 A; SMC package; RoHS compliant but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC compliance is not required. | Select for cost-sensitive non-automotive designs needing identical electrical specs without qualification overhead. |
| SS32 (ON Semiconductor) | 20 V VRRM, 3 A IO, VF = 0.5 V (max) at 3 A; SMA package (smaller footprint, higher RθJA ≈ 110 °C/W). | SMA package limits thermal performance at sustained 3 A; requires larger copper area or forced cooling for equivalent duty cycles. | Choose only if board space constraints prohibit SMC; verify thermal design with derated current per Fig. 6. |
Compared with SB320-E3/52 and SS32, B320Q-13-F provides guaranteed AEC-Q101 compliance and superior thermal resistance (RθJT = 20 °C/W), making it the sole option for production automotive modules requiring PPAP documentation and IATF 16949 traceability.
Availability
B320Q-13-F is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and LED lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for B320Q-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 B320Q–B360Q series belongs to Diodes' automotive-qualified Schottky rectifier product line, engineered specifically for high-reliability 12 V vehicle subsystems demanding low VF, robust surge handling, and full PPAP readiness.
FAQ
Is B320Q-13-F suitable for 24 V truck applications?
No. With a 20 V peak repetitive reverse voltage (VRRM), B320Q-13-F is rated for 12 V nominal automotive systems only. For 24 V trucks, B340Q-13-F (40 V VRRM) or B360Q-13-F (60 V VRRM) must be used to ensure sufficient reverse voltage margin during load dump events.
What is the maximum continuous current at 100 °C ambient?
Per Fig. 6, the derated average forward current at TT = 100 °C is approximately 1.7 A. This assumes mounting on a glass epoxy PCB with a 2 mm × 3 mm copper pad; actual current depends on layout, airflow, and adjacent heat sources.
Does B320Q-13-F have a built-in TVS or ESD protection structure?
It does not integrate a TVS or ESD diode, but its guard ring die construction enhances inherent transient immunity-verified per AEC-Q101 stress tests including TLP and HBM ESD. External TVS remains recommended for ISO 7637-2 pulse 5a/b protection.
Can B320Q-13-F replace B320A-13-F in existing designs?
Yes-both share identical SMC package, 20 V VRRM, 3 A IO, and 0.5 V VF max. B320Q-13-F adds AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing, making it a drop-in upgrade for automotive applications previously using B320A-13-F.
B320Q-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- 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:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
B320Q-13-F FAQ
1.How can I place an order for B320Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B320Q-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 B320Q-13-F reliable?
The price and inventory of B320Q-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 B320Q-13-F is usually 5 days.
3.What payment methods are accepted for B320Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B320Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B320Q-13-F?
B320Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B320Q-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 B320Q-13-F?
For technical support, including B320Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B320Q-13-F requirements.
6.How does Aetrix verify that B320Q-13-F is sourced from the original manufacturer or authorized distributors?
All B320Q-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 B320Q-13-F meets industry standards.
7.What is the process for return or replacement of B320Q-13-F?
All B320Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B320Q-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 B320Q-13-F part is unused and in its original packaging.
Return procedure for B320Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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