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Diodes Incorporated B230AF-13
- Part No.:
- B230AF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
B230AF-13.pdf
- Description:
- DIODE SCHOTTKY 30V 2A SMAF
- Quantity:
- Payment:
- Shipping:
Inventory:17,958
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Product details
Overview
B230AF-13 from Diodes Incorporated is a 30 V, 2 A surface-mount Schottky barrier rectifier in SMAF package with maximum forward voltage of 0.50 V at 2 A and 25°C, reverse leakage current ≤0.10 mA at 30 V/25°C, and thermal resistance RθJA of 90°C/W - used as a boost diode in DC-DC converters for industrial power supplies.
For engineers reviewing the B230AF-13 datasheet, B230AF-13 pinout, B230AF-13 application, or B230AF-13 equivalent, key selection criteria include forward voltage drop at full load, high-temperature reverse leakage stability, thermal performance on FR-4 PCBs, and RoHS-compliant lead-free termination.
Technical Context
This Schottky rectifier uses a planar epitaxial construction to achieve low VF and controlled junction capacitance (93 pF at 4 V, 1 MHz). Its low reverse recovery charge enables efficient operation in high-frequency switching topologies such as synchronous buck and flyback converters.
The device is rated for continuous operation from –55°C to +150°C ambient, with reverse leakage tightly specified up to 125°C (≤0.10 mA at 30 V), supporting reliable performance in thermally constrained environments like enclosed LED drivers and automotive under-hood modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin for 24 V system bus clamping |
| IO | 2 A - Average rectified output current; supports continuous conduction mode in 12–24 V input converters |
| VF (max) | 0.50 V @ 2 A, 25°C - Low conduction loss reduces power dissipation by ~1 W vs. standard PN diode at same current |
| IR (max) | 0.10 mA @ 30 V, 25°C - Enables stable blocking in standby modes without excessive quiescent current drain |
| RθJA | 90°C/W - Junction-to-ambient thermal resistance on standard FR-4 board; limits ΔT to ~180°C at full load |
| CT | 93 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching losses and EMI in >100 kHz applications |
Pinout & Package
Package: SMAF (Surface-Mount Axial Flat) - molded plastic case, 4.0 mm × 2.5 mm footprint, cathode band marking, matte tin-plated copper leadframe, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in boost topology); requires thermal pad connection for heat dissipation |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or ground return path; determines polarity-sensitive placement in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF ≤ 0.50 V @ 2 A ensures <1 W conduction loss at full load, reducing thermal stress in compact enclosures |
| High-temperature leakage control | IR ≤ 0.10 mA @ 30 V/25°C and ≤0.15 mA @ 30 V/125°C prevents thermal runaway in sealed power modules |
| RoHS-compliant lead finish | Matte tin annealed over copper meets MIL-STD-202 solderability requirements and eliminates Pb-based reflow concerns |
| Green compound packaging | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) satisfies IEC 61249-2-21 compliance |
Applications
| Boost Diode | Blocking Diode |
|---|---|
Use Scenario: Step-up DC-DC converter in 12 V to 24 V industrial power supply. IC Role / Device Role / Timing Role: Unidirectional current path during inductor discharge phase; blocks reverse current when high-side switch is active. Use Value: 0.50 V VF reduces power loss by 1.0 W vs. 1.0 V PN diode, lowering heatsink requirement by 50%. | Use Scenario: Solar panel string isolation in off-grid battery charging system. IC Role / Device Role / Timing Role: Prevents reverse current flow from battery into shaded or faulty panel during night or fault conditions. Use Value: 0.10 mA max IR at 25°C minimizes overnight battery drain, extending usable capacity by >3% per cycle. |
| Recirculating Diode | OR-ing Diode |
Use Scenario: Inductive load flyback protection in 24 V solenoid driver module. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when MOSFET gate drive is turned off. Use Value: Fast recovery (no stored charge) and 93 pF CT suppress voltage spikes <40 V, eliminating need for TVS clamp. | Use Scenario: Redundant 12 V power rail combining in network switch backplane. IC Role / Device Role / Timing Role: Enables automatic source selection while preventing backfeed between parallel supplies. Use Value: Low VF mismatch (<0.05 V across batch) ensures balanced current sharing within ±8% tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB230-E3/54 (Vishay) | Same 30 V/2 A rating; VF = 0.52 V @ 2 A; RθJA = 95°C/W; SMA package (slightly larger than SMAF) | SMA footprint requires PCB pad revision; higher thermal resistance increases junction temp by ~5°C at full load | Preferred where legacy SMA layout exists and minor thermal margin is acceptable |
| SS23 (ON Semiconductor) | 30 V/2 A; VF = 0.55 V @ 2 A; IR = 0.20 mA @ 30 V/25°C; SOD-123FL package | SOD-123FL has lower current handling margin and higher leakage; unsuitable for 125°C ambient designs | Cost-optimized option for non-thermal-critical consumer applications below 85°C ambient |
Compared with SB230-E3/54 and SS23, B230AF-13 delivers superior thermal performance (90°C/W vs. ≥95°C/W), tighter leakage control (0.10 mA vs. ≥0.20 mA), and smaller SMAF footprint - making it optimal for space-constrained, high-reliability industrial converters.
Availability
B230AF-13 is available at Aetrix Electronics and suitable for boost diode, blocking diode, recirculating diode, and OR-ing diode applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for B230AF-13 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 B230AF-13 belongs to Diodes' high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, low-loss power conversion in industrial, computing, and lighting systems.
FAQ
What is the maximum junction temperature for continuous operation?
The B230AF-13 is rated for continuous operation with junction temperature ranging from –55°C to +150°C. At 2 A DC load on a standard FR-4 board (RθJA = 90°C/W), junction temperature rise is approximately 180°C above ambient - so maximum ambient must be limited to –30°C for safe continuous use unless heatsinking is added.
Is B230AF-13 suitable for automotive under-hood applications?
Yes, but only in non-safety-critical roles. Its –55°C to +150°C operating range and low high-temperature leakage (≤0.15 mA at 30 V/125°C) meet under-hood thermal requirements; however, Diodes Incorporated explicitly excludes automotive safety-critical use without written approval per their Life Support Notice.
Does B230AF-13 have a specified reverse recovery time?
No - as a Schottky barrier rectifier, it exhibits no minority-carrier storage and therefore has no defined reverse recovery time (trr). Its switching behavior is governed by junction capacitance (93 pF) and series resistance, enabling clean turn-off in high-frequency (>500 kHz) topologies without tail current.
Can B230AF-13 replace B220AF-13 in an existing design?
Yes, with verification of voltage margin. B230AF-13 has identical package, pinout, and thermal characteristics as B220AF-13, but its 30 V VRRM provides 10 V higher reverse blocking capability - making it a direct upgrade where system transients exceed 20 V or long-term reliability at elevated voltage stress is required.
B230AF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 30 V
- Capacitance @ Vr, F:
- 93pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -55°C ~ 150°C
B230AF-13 FAQ
1.How can I place an order for B230AF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B230AF-13 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 B230AF-13 reliable?
The price and inventory of B230AF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B230AF-13 is usually 5 days.
3.What payment methods are accepted for B230AF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B230AF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B230AF-13?
B230AF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B230AF-13 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 B230AF-13?
For technical support, including B230AF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B230AF-13 requirements.
6.How does Aetrix verify that B230AF-13 is sourced from the original manufacturer or authorized distributors?
All B230AF-13 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 B230AF-13 meets industry standards.
7.What is the process for return or replacement of B230AF-13?
All B230AF-13 units undergo pre-shipment inspection (PSI). If there is an issue with B230AF-13, 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 B230AF-13 part is unused and in its original packaging.
Return procedure for B230AF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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