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Diodes Incorporated B290-13
- Part No.:
- B290-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B290-13.pdf
- Description:
- DIODE SCHOTTKY 90V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:6,918
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Product details
Overview
B290-13 from Diodes Incorporated is a 2.0A, 90V peak repetitive reverse voltage Schottky barrier rectifier in SMB package, featuring low forward voltage (0.79 V @ 2.0A, 25°C), 50A surge capability, and guard ring die construction for transient protection-used in DC/DC converters, polarity protection circuits, and high-frequency free-wheeling applications.
For engineers reviewing the B290-13 datasheet, B290-13 pinout, B290-13 application, or B290-13 equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (15 °C/W), reverse leakage at 100°C (15 mA), capacitance (75 pF @ 1 MHz), and SMB mechanical compatibility with automated SMT assembly.
Technical Context
This discrete Schottky diode employs a guard ring die structure to enhance transient immunity and prevent edge breakdown under high dv/dt conditions. Its low junction-to-terminal thermal resistance (15 °C/W) enables sustained 2.0A conduction at terminal temperatures up to +125°C without derating when properly heatsinked.
The device operates with minimal switching loss due to majority-carrier conduction, making it suitable for high-frequency rectification up to several hundred kHz. Its 75 pF junction capacitance and fast recovery (inherently <10 ns) support efficient operation in SMPS output stages and synchronous rectifier auxiliary paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in 48V–72V bus polarity protection. |
| IO @ TT=125°C | 2.0 A - Continuous average forward current with terminal temperature held at 125°C; defines steady-state power handling in compact layouts. |
| VFM @ 2.0A, 25°C | 0.79 V - Forward voltage drop at rated DC load; directly determines conduction loss (1.58 W) and thermal rise in linear regulation paths. |
| IFSM (8.3ms) | 50 A - Single half-sine surge rating; supports inrush current tolerance in capacitor-input filter stages without failure. |
| IRM @ 100°C | 15 mA - Reverse leakage at elevated temperature; impacts standby power in always-on 12V/24V systems with tight quiescent current budgets. |
| CT @ 1 MHz, 4V | 75 pF - Junction capacitance; limits high-frequency noise coupling and affects snubber design in flyback secondary rectification. |
| RJT | 15 °C/W - Thermal resistance from junction to terminal; enables direct PCB copper pour thermal path design without additional heatsinking. |
Pinout & Package
SMB (DO-214AA) surface-mount package: molded plastic case, UL 94V-0 rated, cathode marked by band or notch, terminals solder-plated per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry node under forward bias | Connected to lower-potential side (e.g., switch node in buck converter); requires low-inductance trace routing to minimize ringing. |
| Cathode | Current exit node under forward bias; marked with band | Connected to output rail or ground return; serves as reference point for voltage clamping and ESD protection networks. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Prevents premature edge breakdown during voltage transients, improving reliability in automotive load-dump environments. |
| Low VF at high temperature | 0.69 V @ 2.0A, 100°C - maintains efficiency in thermally constrained enclosures without forced air cooling. |
| High surge rating (50A) | Withstands repetitive inrush events in industrial power supplies without parametric shift or bond-wire fusing. |
| RoHS-compliant lead-free finish | Matte tin plating meets JEDEC J-STD-020C Level 1 moisture sensitivity - eliminates pre-bake requirement for standard SMT reflow. |
Applications
| DC/DC Converter Output Rectification | Polarity Protection Circuit |
|---|---|
Use Scenario: Secondary-side rectification in 12V–48V input isolated DC/DC modules operating at 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: Uncontrolled rectifier providing low-loss, fast-recovery current path synchronized to transformer secondary voltage polarity. Use Value: 0.79 V forward drop reduces conduction loss by ~35% versus comparable PN diodes, lowering thermal stress on adjacent MOSFETs and magnetics. | Use Scenario: Reverse-voltage blocking in 24V industrial control inputs where accidental battery reversal must not damage downstream logic or sensors. IC Role / Device Role / Timing Role: Passive series-blocking element placed between connector and LDO input, conducting only during correct polarity connection. Use Value: 90V VRRM provides 2× margin over 24V nominal bus, while 15 mA IRM at 100°C ensures <1 mW standby dissipation in always-powered field devices. |
| High-Frequency Free-Wheeling Diode | Capacitor-Input Filter Snubber Path |
Use Scenario: Freewheeling path across inductive loads (e.g., solenoid drivers, relay coils) in automotive body control modules switching at 1–10 kHz. IC Role / Device Role / Timing Role: Provides low-impedance recirculation path during MOSFET off-time to suppress inductive kick and reduce EMI. Use Value: 75 pF capacitance minimizes displacement current during rapid voltage transitions, reducing radiated emissions compared to higher-C alternatives. | Use Scenario: Auxiliary discharge path across bulk input capacitors in offline AC/DC adapters to meet IEC 62368-1 touch-current safety requirements. IC Role / Device Role / Timing Role: Leakage-controlled discharge element that bleeds stored energy slowly after AC removal, avoiding hazardous residual voltage. Use Value: Stable 0.5 mA IRM at 25°C ensures predictable 30–60 second discharge time for 100 µF/400V capacitors without thermal runaway risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB290-E3/52 (Vishay) | Same SMB package, identical 90V VRRM and 2.0A IO, but VF = 0.85 V @ 2.0A (25°C); RJT = 18 °C/W. | Higher conduction loss and thermal resistance limit use in space-constrained 125°C ambient designs. | Select when legacy Vishay qualification is required; verify layout thermal margin with 3 °C/W higher junction rise. |
| SS29 (ON Semiconductor) | SMB package, 90V VRRM, 2.0A IO, VF = 0.82 V @ 2.0A (25°C); IRM = 20 mA @ 100°C. | 5 mA higher reverse leakage increases standby power in battery-backed systems above 85°C. | Acceptable for cost-sensitive consumer power supplies where 5 mA extra leakage is tolerable and thermal headroom exists. |
Compared with SB290-E3/52 and SS29, B290-13 offers the lowest forward voltage and best thermal resistance among SMB 90V/2A Schottky rectifiers, making it optimal for thermally aggressive industrial and automotive power stages where efficiency and junction temperature margin are critical.
Availability
B290-13 is available at Aetrix Electronics and suitable for DC/DC converter output rectification, polarity protection circuits, and high-frequency free-wheeling applications requiring stable component supply across automotive, industrial control, and telecom power systems.
Supply support for B290-13 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 and automotive markets.
The B270–B2100 series targets high-efficiency, high-reliability rectification in space-constrained SMT power supplies, emphasizing low VF, robust surge capability, and RoHS-compliant manufacturability.
FAQ
Is B290-13 suitable for use in automotive under-hood applications?
Yes. B290-13 is rated for operation from –65°C to +150°C junction temperature, features guard ring die construction for transient immunity, and meets AEC-Q101 stress test requirements per Diodes Incorporated's qualified product list. Its 90V VRRM provides margin against load-dump transients up to ISO 7637-2 Pulse 5a.
What is the maximum recommended PCB copper area for thermal relief with B290-13?
For continuous 2.0A operation at TA = 85°C, Diodes Incorporated recommends ≥ 40 mm² of 2-oz copper connected directly to both anode and cathode pads. This achieves effective RJT ≈ 15 °C/W as specified, preventing junction exceedance beyond 125°C under worst-case convection conditions.
Does B290-13 require a pre-bake step before reflow soldering?
No. B290-13 has Moisture Sensitivity Level 1 per J-STD-020C, meaning it may be exposed indefinitely to floor life conditions (≤30°C/60% RH) without baking. Standard Pb-free reflow profiles (peak 260°C/10 sec at terminal) are fully supported with its matte tin finish.
Can B290-13 replace B270-13 in existing designs?
Yes, with verification of voltage margin. Both share identical SMB package, thermal characteristics, and 2.0A current rating, but B290-13 has 90V VRRM versus 70V for B270-13. Substitution is safe if system peak reverse voltage remains ≤90V; no layout or thermal changes are needed.
B290-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 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 mA @ 90 V
- Capacitance @ Vr, F:
- 75pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B290-13 FAQ
1.How can I place an order for B290-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B290-13 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 B290-13 reliable?
The price and inventory of B290-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B290-13 is usually 5 days.
3.What payment methods are accepted for B290-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B290-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B290-13?
B290-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B290-13 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 B290-13?
For technical support, including B290-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B290-13 requirements.
6.How does Aetrix verify that B290-13 is sourced from the original manufacturer or authorized distributors?
All B290-13 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 B290-13 meets industry standards.
7.What is the process for return or replacement of B290-13?
All B290-13 units undergo pre-shipment inspection (PSI). If there is an issue with B290-13, 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 B290-13 part is unused and in its original packaging.
Return procedure for B290-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
B290-13 Tags
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