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Diodes Incorporated B270Q-13-F
- Part No.:
- B270Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B270Q-13-F.pdf
- Description:
- DIODE SCHOTTKY 70V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:5,731
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Product details
Overview
B270Q-13-F from Diodes Incorporated is a 70 V, 2.0 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.79 V max forward voltage at 2.0 A and 7 µA max reverse leakage at 25°C. It delivers low conduction loss for polarity protection and freewheeling in DC/DC converters and automotive power modules.
For engineers reviewing the B270Q-13-F datasheet, B270Q-13-F pinout, B270Q-13-F application, or B270Q-13-F equivalent, key selection criteria include its 70 V reverse voltage rating, 50 A non-repetitive surge capability, AEC-Q101 qualification, RoHS-compliant lead-free finish, and thermal resistance of 15 °C/W junction-to-terminal.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress edge breakdown under high dv/dt conditions. Its low VF (0.79 V @ 2.0 A) and low CT (75 pF @ 4 V) support high-frequency switching up to several hundred kHz in buck and flyback topologies.
The device operates across –65°C to +150°C with derated current above +125°C terminal temperature. Its 15 °C/W RθJT enables direct thermal coupling to PCB copper, supporting compact layout in space-constrained power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in polarity protection and clamp circuits. |
| IO (at TT = +125°C) | 2.0 A - Continuous average forward current rating at 125°C terminal temperature; usable in thermally managed 5–12 V power rails. |
| VF (max) | 0.79 V @ 2.0 A, 25°C - Low conduction loss reduces power dissipation by ~1.6 W vs. standard PN diode at same current. |
| IR (max) | 7 µA @ 70 V, 25°C - Minimal leakage preserves battery life in always-on systems and enables stable bias networks. |
| IFSM | 50 A @ 8.3 ms - Withstands single half-sine surge events common during hot-plug or load dump transients. |
| RθJT | 15 °C/W - Enables predictable thermal design when mounted on ≥1 cm² 1-oz copper; no heatsink required below 1.5 A continuous. |
| CT | 75 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching loss and EMI in high-frequency (>100 kHz) SMPS designs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic with UL 94V-0 rating, cathode band marking, and matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in freewheeling or reverse polarity protection configurations. |
| Cathode | Forward current exit / reverse blocking node | Connected to positive rail; blocks reverse current flow and clamps transients toward supply in protection circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against voltage transients and localized avalanche, enabling reliable operation in noisy automotive environments. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TCT, and ESD testing; supports PPAP documentation for Tier-1 programs. |
| Lead-free, halogen-free "Green" packaging | Meets RoHS 3 (2015/863/EU) and IATF 16949 manufacturing requirements; <900 ppm Br/Cl, <1000 ppm Sb. |
| High-temperature solderability | Rated for 260°C/10 s reflow profile, compatible with standard Pb-free assembly processes without delamination or voiding. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V input rail of BCM microcontroller power supply. IC Role / Device Role / Timing Role: Unidirectional blocking element that prevents damage during battery misconnection. Use Value: 0.79 V VF limits voltage drop to <1% at 2 A, preserving brown-out margin for 5 V LDOs downstream. |
Use Scenario: Freewheeling diode in synchronous buck converter output stage (12 V → 5 V @ 1.5 A). IC Role / Device Role / Timing Role: Provides low-loss current path during high-side MOSFET off-time. Use Value: 75 pF CT and fast recovery minimize switching loss and ringing, improving efficiency by ~1.2% at 250 kHz. |
| USB-C Power Delivery Adapter | Smart Home Hub Power Input |
Use Scenario: Output rectification in secondary-side synchronous rectifier auxiliary winding circuit. IC Role / Device Role / Timing Role: Clamps transformer leakage inductance energy and recirculates current during dead time. Use Value: 50 A IFSM withstands peak currents during startup surge, eliminating need for oversized snubbers. |
Use Scenario: Polarity protection on 24 V PoE-powered smart hub main input. IC Role / Device Role / Timing Role: Standby-blocking diode ensuring zero reverse current during field wiring errors. Use Value: 7 µA IR at 25°C ensures <1 µW standby loss-critical for Energy Star Level VI compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB270-E3/52 (Vishay) | Same SMB package, 70 V VRRM, 2.0 A IO, but VF = 0.85 V max @ 2 A; RθJT = 18 °C/W. | Higher VF increases conduction loss by ~0.12 W at 2 A; less suitable for thermally constrained 12 V input rails. | Select if legacy Vishay footprint compatibility is required; verify thermal margin with higher RθJT. |
| SS27-E3/57T (Vishay) | SMB package, 70 V VRRM, 2.0 A IO, VF = 0.75 V max @ 2 A, but not AEC-Q101 qualified. | Lacks automotive qualification and PPAP support; unsuitable for OEM vehicle programs. | Prefer for cost-sensitive industrial or consumer applications where automotive compliance is not mandated. |
Compared with SB270-E3/52 and SS27-E3/57T, B270Q-13-F offers the lowest VF among AEC-Q101-qualified 70 V/2 A SMB Schottkys while maintaining industry-leading thermal resistance-enabling smaller PCB area and higher reliability in automotive and industrial power supplies.
Availability
B270Q-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and USB-C power delivery adapters requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for B270Q-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 B270Q-13-F belongs to Diodes' high-reliability Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low VF, surge robustness, and AEC-Q101 validation are mandatory.
FAQ
Is B270Q-13-F suitable for automotive applications?
Yes. B270Q-13-F is AEC-Q101 qualified, manufactured in IATF 16949 certified facilities, and PPAP capable. It meets automotive requirements for temperature cycling, high-temperature operating life, and ESD robustness, making it appropriate for body electronics, infotainment power supplies, and ADAS sensor modules.
What is the maximum operating temperature for continuous use?
The device supports continuous operation up to +150°C junction temperature. However, average forward current must be derated above +125°C terminal temperature per Figure 4 in DS38620 Rev. 2–2. At +125°C terminal, IO remains rated at 2.0 A; at +150°C, it drops to approximately 1.3 A.
Does B270Q-13-F have a cathode band marking?
Yes. The SMB package features a visible cathode band on the top surface, aligned with the cathode terminal. This marking is consistent with JEDEC DO-214AA standards and enables unambiguous orientation during automated placement and visual inspection.
Can B270Q-13-F replace B270A-13-F?
No. B270A-13-F is an obsolete part with different electrical specs: VF max = 0.85 V @ 2 A and IR max = 100 µA @ 70 V. B270Q-13-F improves leakage by >14× and reduces VF by 75 mV, offering superior efficiency and thermal performance-but requires validation due to parameter changes.
B270Q-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):
- 70 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 7 µA @ 70 V
- Capacitance @ Vr, F:
- 75pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B270Q-13-F FAQ
1.How can I place an order for B270Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B270Q-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 B270Q-13-F reliable?
The price and inventory of B270Q-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 B270Q-13-F is usually 5 days.
3.What payment methods are accepted for B270Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B270Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B270Q-13-F?
B270Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B270Q-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 B270Q-13-F?
For technical support, including B270Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B270Q-13-F requirements.
6.How does Aetrix verify that B270Q-13-F is sourced from the original manufacturer or authorized distributors?
All B270Q-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 B270Q-13-F meets industry standards.
7.What is the process for return or replacement of B270Q-13-F?
All B270Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B270Q-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 B270Q-13-F part is unused and in its original packaging.
Return procedure for B270Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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