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Diodes Incorporated B350-13
- Part No.:
- B350-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B350-13.pdf
- Description:
- DIODE SCHOTTKY 50V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
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Product details
Overview
B350-13 from Diodes Incorporated is a 50 V, 3.0 A surface-mount Schottky barrier rectifier in SMC package, with maximum forward voltage of 0.70 V at 3.0 A and reverse leakage current of 0.1 mA at rated VR and 25°C. It delivers low power loss for high-efficiency DC/DC conversion and polarity protection in industrial power supplies and automotive body electronics.
For engineers reviewing the B350-13 datasheet, B350-13 pinout, B350-13 application, or B350-13 equivalent, key selection criteria include its 50 V peak repetitive reverse voltage, 100 A non-repetitive surge rating, 20 °C/W junction-to-terminal thermal resistance, RoHS-compliant lead-free plating, and JEDEC-qualified reliability for commercial and automotive-derivative designs.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient immunity and withstand repetitive surge events up to 100 A (8.3 ms half-sine). Its low VF and fast switching enable high-frequency operation in flyback and buck converter freewheeling paths without reverse recovery losses.
The device operates across –55°C to +150°C junction temperature range and features 90 °C/W junction-to-ambient thermal resistance on standard glass-epoxy PCBs with 2 × 3 mm copper pads. Its 200 pF capacitance at 4 V reverse bias supports stable performance in low-noise 1 MHz switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - blocks up to 50 V DC or peak AC reverse voltage without breakdown |
| IO | 3.0 A - continuous average forward current rating at TA = 25°C |
| VF Max | 0.70 V @ 3.0 A - enables <1.5 W conduction loss in 3 A load paths |
| IR Max | 0.1 mA @ 50 V, 25°C - ensures minimal standby leakage in battery-backed systems |
| IFSM | 100 A - sustains short-duration inrush or fault currents without failure |
| RθJT | 20 °C/W - allows direct thermal coupling to heatsink or copper plane for power dissipation |
| Package | SMC - industry-standard surface-mount outline with cathode band polarity marking |
Pinout & Package
SMC package: molded plastic body (UL 94V-0), matte tin-plated terminals, cathode band polarity indicator, 0.21 g mass, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node) in freewheeling path |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential rail (e.g., output capacitor or supply rail) |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and surge robustness without requiring external TVS in cost-sensitive 12–24 V systems |
| Low VF (0.70 V @ 3 A) | Reduces conduction loss by ~30% vs. comparable silicon rectifiers, lowering thermal stress |
| Surge rating: 100 A IFSM | Supports hot-plug and load-dump transients in automotive accessory modules without derating |
| JEDEC-qualified reliability | Validated for long-term operation in commercial-grade industrial controls and lighting drivers |
Applications
| Power Supply Polarity Protection | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Prevents damage from reverse battery connection in 12 V/24 V embedded power inputs. IC Role / Device Role / Timing Role: Unidirectional current valve placed in series with input rail. Use Value: Blocks reverse current at <0.1 mA leakage while adding only 0.7 V drop at full 3 A load. | Use Scenario: Provides low-loss return path for inductor current during MOSFET off-time in buck converters. IC Role / Device Role / Timing Role: Fast-switching freewheeling diode with no reverse recovery delay. Use Value: Eliminates switching losses associated with silicon diode recovery, improving efficiency above 100 kHz. |
| Automotive Body Control Module | Industrial Sensor Power Conditioning |
Use Scenario: Protects microcontroller power rails from backfeed during multi-rail sequencing in BCMs. IC Role / Device Role / Timing Role: Reverse-blocking element between isolated 5 V and 3.3 V domains. Use Value: Maintains isolation integrity with <0.1 mA leakage at 50 V VR, meeting ISO 16750-2 pulse test margin. | Use Scenario: Stabilizes 3.3 V sensor supply against transient coupling from nearby motor drives. IC Role / Device Role / Timing Role: Low-capacitance (200 pF) clamping diode in LDO input filtering network. Use Value: Limits high-frequency noise ingress without resonant peaking due to controlled junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB350-E3/54 (Vishay) | Same 50 V VRRM, 3 A IO, but VF = 0.75 V @ 3 A; RθJA = 95 °C/W | Slightly higher conduction loss and thermal resistance; identical SMC footprint | Select when second-source qualification is required and 0.05 V VF tolerance is acceptable |
| SS35 (ON Semiconductor) | 50 V VRRM, 3 A IO, VF = 0.72 V @ 3 A; IR = 0.2 mA @ 50 V, 25°C | Higher leakage limits use in ultra-low-power sleep modes; same thermal profile | Prefer for battery-powered IoT nodes where sub-100 nA standby current is critical |
Compared with SB350-E3/54 and SS35, B350-13 offers the lowest VF (0.70 V) and tightest IR spec (0.1 mA), making it optimal for thermally constrained 3 A power paths where efficiency and leakage-driven battery drain must both be minimized.
Availability
B350-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, DC/DC converter freewheeling, and sensor power conditioning requiring stable component supply and long-term lifecycle support.
Supply support for B350-13 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The B320–B360 series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-effective, high-efficiency AC/DC and DC/DC conversion in commercial and automotive-derivative applications.
FAQ
What is the maximum junction temperature for B350-13?
The B350-13 has a specified operating junction temperature range of –55°C to +150°C. This rating is validated per JEDEC standards and applies under conditions where thermal resistance (RθJT = 20 °C/W) and power dissipation remain within datasheet limits. Derating is required above +125°C ambient per Fig. 6 in DS30923 Rev. 13–2.
Is B350-13 suitable for automotive applications?
B350-13 is qualified to JEDEC reliability standards referenced in AEC-Q200, but it is not an AEC-Q101-qualified automotive part. For automotive use, Diodes offers the B350Q variant (separate datasheet DS30923Q), which includes additional stress testing and PPAP documentation. B350-13 may be used in non-safety-critical automotive-derivative systems with appropriate system-level validation.
What does the "-13" suffix in B350-13 indicate?
Per Diodes' ordering information, the "-13" suffix denotes tape-and-reel packaging in SMC format with 3,000 units per reel. It does not indicate revision level; the device's electrical and mechanical specifications are defined in datasheet DS30923 Rev. 13–2, published May 2022.
How is polarity identified on the B350-13 package?
Polarity is marked by a cathode band on the top surface of the SMC package. The band identifies the cathode terminal; the opposite end is the anode. Some units may also feature a cathode notch on the bottom edge, but the band is the primary and guaranteed polarity indicator per mechanical drawing DS30923 Rev. 13–2, page 5.
B350-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- 200pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 125°C
B350-13 FAQ
1.How can I place an order for B350-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B350-13 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 B350-13 reliable?
The price and inventory of B350-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B350-13 is usually 5 days.
3.What payment methods are accepted for B350-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B350-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B350-13?
B350-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B350-13 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 B350-13?
For technical support, including B350-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B350-13 requirements.
6.How does Aetrix verify that B350-13 is sourced from the original manufacturer or authorized distributors?
All B350-13 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 B350-13 meets industry standards.
7.What is the process for return or replacement of B350-13?
All B350-13 units undergo pre-shipment inspection (PSI). If there is an issue with B350-13, 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 B350-13 part is unused and in its original packaging.
Return procedure for B350-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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