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Diodes Incorporated B390CE-13
- Part No.:
- B390CE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B390CE-13.pdf
- Description:
- DIODE SCHOTTKY 90V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,998
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Product details
Overview
B390CE-13 from Diodes Incorporated is a 90 V, 3.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.79 V max forward voltage at 3 A and 0.20 mA max reverse leakage at 90 V and +25°C, optimized for high-efficiency DC/DC boost stages and recirculating paths in industrial power supplies.
For engineers reviewing the B390CE-13 datasheet, B390CE-13 pinout, B390CE-13 application, or B390CE-13 equivalent, key selection criteria include its low VF stability at elevated temperatures, thermal resistance (RθJC = 30°C/W), SMC package footprint compatibility, and reverse leakage performance under 90 V blocking conditions.
Technical Context
This Schottky rectifier uses a planar metal–semiconductor junction to achieve low forward conduction loss and fast switching with no minority-carrier storage delay. Its design targets continuous conduction mode (CCM) operation in 100 kHz–500 kHz switch-mode power supplies where low VF directly improves efficiency at 3 A load current.
Thermal performance is defined by RθJC = 30°C/W (SMC) and RθJA = 70°C/W on standard FR-4 PCB, enabling reliable operation up to +150°C junction temperature. Reverse leakage remains stable across temperature due to optimized barrier height and epitaxial structure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 48 V input boost converters. |
| IO(AV) | 3.0 A - Average forward current rating at TA = +25°C; derates linearly to ~1.8 A at +100°C ambient per Figure 4. |
| VF(max) | 0.79 V @ 3 A, +25°C - Low conduction loss reduces power dissipation to ≤2.37 W at full load, minimizing heatsink need. |
| IR(max) | 0.20 mA @ 90 V, +25°C - Tight leakage spec ensures minimal standby loss in always-on auxiliary rails. |
| RθJC | 30°C/W - Junction-to-case thermal resistance enables direct mounting to copper pour or heatsink for >2 W continuous dissipation. |
| CT | 105 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching loss and EMI in high-frequency rectification. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin–annealed copper leadframe, cathode indicated by band marking, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to source side of switching FET in boost topology; must handle 3 A RMS and 100 A surge (IFSM). |
| Cathode | Forward current exit node / output rail connection | Connects to output capacitor and feedback divider; polarity band identifies this terminal; critical for correct PCB layout routing. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high temperature | 0.60 V @ 3 A, +125°C - Maintains <20% VF increase over full operating range, preserving efficiency in thermally constrained enclosures. |
| Stable high-temp IR | ≤0.7 mA @ 90 V, +125°C - Prevents thermal runaway in sealed industrial power modules operating near 100°C ambient. |
| Green compound packaging | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - Meets IEC 61249-2-21 and RoHS 2 compliance without compromising mechanical robustness. |
| Solderability assurance | MIL-STD-202, Method 208 compliant - Guarantees reliable reflow joint formation on automated SMT lines using standard Pb-free profiles. |
Applications
| Boost Diode in 48 V Telecom PSU | Blocking Diode in Solar Charge Controller |
|---|---|
Use Scenario: Used in non-isolated boost converter stage stepping 36–57 V input to 54 V output at 3 A continuous. IC Role / Device Role / Timing Role: Unidirectional current path during MOSFET off-time; conducts only when switch is open. Use Value: 0.79 V VF limits conduction loss to 2.37 W, reducing thermal stress on adjacent controller IC and enabling compact 2-layer PCB layout. | Use Scenario: Prevents reverse current flow from battery to PV panel at night in 24/48 V off-grid solar systems. IC Role / Device Role / Timing Role: Standby-blocking element; sustains 90 V reverse bias with <0.2 mA leakage at room temperature. Use Value: Low IR ensures <1.8 mW standby loss per diode, extending battery autonomy by >12 hours/month in typical 10 A system. |
| Recirculating Diode in BLDC Motor Driver | Output Rectifier in USB-C PD Adapter |
Use Scenario: Freewheeling path for phase current during PWM dead time in 3-phase 24 V motor drives. IC Role / Device Role / Timing Role: Clamps inductive kickback energy back into DC bus; operates in discontinuous conduction mode. Use Value: 100 A IFSM rating handles peak flyback surges without degradation; 105 pF CT minimizes ringing during 20–50 kHz commutation. | Use Scenario: Secondary-side synchronous rectification replacement in 65 W USB-C PD AC/DC adapter (5–20 V output). IC Role / Device Role / Timing Role: Output rectifier in flyback or active clamp forward topology; conducts during transformer reset phase. Use Value: SMC package provides 2× thermal margin vs SMB; RθJC = 30°C/W allows direct copper pad attachment for 3 A sustained output without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS39-E3/57T (Vishay) | Same 90 V VRRM, 3 A IO, but VF = 0.85 V @ 3 A; RθJC = 35°C/W; SMB package only. | Limited to lower-power designs due to higher VF and inferior thermal path; not suitable for >2.5 A continuous in SMC-requiring layouts. | Select only if SMB footprint is mandatory and 60 mW higher conduction loss is acceptable. |
| SB390-E3/57T (Vishay) | Identical 90 V/3 A rating, VF = 0.75 V @ 3 A, but IR = 0.35 mA @ 90 V/+25°C; SMC package. | Higher leakage may compromise standby efficiency in battery-backed systems; otherwise drop-in compatible in thermal-limited designs. | Prefer when lowest VF is priority and leakage <0.3 mA is acceptable; verify IR impact in final thermal model. |
Compared with SS39-E3/57T and SB390-E3/57T, B390CE-13 delivers the best balance of low VF (0.79 V), tight IR control (0.20 mA), and superior thermal resistance (30°C/W), making it optimal for space-constrained, thermally demanding 3 A rectification tasks where both efficiency and reliability are critical.
Availability
B390CE-13 is available at Aetrix Electronics and suitable for industrial power supplies, solar charge controllers, BLDC motor drivers, and USB-C PD adapters requiring stable component supply and consistent SMC-packaged Schottky performance.
Supply support for B390CE-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 B390CE-13 belongs to Diodes' high-reliability Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in industrial and telecom infrastructure where low VF and stable IR are essential.
FAQ
What is the maximum junction temperature for continuous operation of B390CE-13?
The device supports continuous operation up to +150°C junction temperature, verified per JEDEC JESD22-A108. At +125°C ambient with 3 A load and standard FR-4 PCB (1"×1", 2 oz copper), junction temperature remains within limit due to RθJA = 70°C/W and low VF-induced self-heating.
Does B390CE-13 require derating for capacitive loads?
Yes - the datasheet specifies that average forward current must be derated by 20% for capacitive loads. At 3 A rated IO, this means limiting continuous current to 2.4 A when used with bulk output capacitors exceeding 100 µF in low-impedance SMPS outputs.
Is B390CE-13 compatible with lead-free reflow profiles?
Yes - the matte tin–annealed copper leadframe meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard Pb-free reflow profiles (peak 260°C, 60 sec max). No pre-bake is required prior to assembly.
How does the 0.20 mA IR spec impact system-level standby power?
At 90 V reverse bias and +25°C, 0.20 mA leakage contributes just 18 mW of standby loss. In a dual-diode configuration (e.g., input/output blocking), total added loss remains under 36 mW - well within Energy Star and EU CoC Tier 2 requirements for external power supplies.
B390CE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 90 V
- Capacitance @ Vr, F:
- 105pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
B390CE-13 FAQ
1.How can I place an order for B390CE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B390CE-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 B390CE-13 reliable?
The price and inventory of B390CE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B390CE-13 is usually 5 days.
3.What payment methods are accepted for B390CE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B390CE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B390CE-13?
B390CE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B390CE-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 B390CE-13?
For technical support, including B390CE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B390CE-13 requirements.
6.How does Aetrix verify that B390CE-13 is sourced from the original manufacturer or authorized distributors?
All B390CE-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 B390CE-13 meets industry standards.
7.What is the process for return or replacement of B390CE-13?
All B390CE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B390CE-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 B390CE-13 part is unused and in its original packaging.
Return procedure for B390CE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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