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Diodes Incorporated B190B-13-F
- Part No.:
- B190B-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B190B-13-F.pdf
- Description:
- DIODE SCHOTTKY 90V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:22,178
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Product details
Overview
B190B-13-F from Diodes Incorporated is a 90 V, 1.0 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.79 V max forward voltage at 1.0 A and 0.5 mA max reverse leakage at rated VR and +25°C, optimized for polarity protection and DC-DC freewheeling in compact power supplies.
For engineers reviewing the B190B-13-F datasheet, B190B-13-F pinout, B190B-13-F application, or B190B-13-F equivalent, key selection criteria include its 90 V reverse voltage rating, low VF for minimal conduction loss, SMB thermal resistance (RθJT = 25 °C/W), and JEDEC-qualified reliability for industrial and automotive-derivative designs.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain reliable operation under repetitive surge conditions (IFSM = 30 A, 8.3 ms half-sine). Its low junction-to-terminal thermal resistance enables stable 1.0 A average current handling up to +125°C terminal temperature.
The device exhibits 80 pF typical junction capacitance at 4 V reverse bias and 1 MHz, supporting high-frequency switching applications such as synchronous rectification and flyback snubber circuits. Reverse leakage remains ≤5.0 mA at +100°C, ensuring predictable blocking behavior across extended temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for blocking capability in DC-DC output stages. |
| IO (AV) | 1.0 A @ TT = +125°C - Continuous forward current rating with thermal derating; defines usable current envelope in thermally constrained layouts. |
| VF Max | 0.79 V @ IF = 1.0 A, TA = +25°C - Peak forward voltage drop; directly determines conduction loss (0.79 W per diode at full load). |
| IR Max | 0.5 mA @ VR = 90 V, TA = +25°C - Maximum reverse leakage; critical for low-power standby and battery backup circuits. |
| RθJT | 25 °C/W - Junction-to-terminal thermal resistance; enables direct heatsinking via PCB copper pour without external heatsink. |
| CT | 80 pF @ VR = 4 V, f = 1 MHz - Junction capacitance; impacts switching speed and EMI in high-frequency converters (>100 kHz). |
Pinout & Package
Package: SMB (Surface Mount Body), molded plastic, UL 94V-0 rated, cathode band polarity marking, lead-free matte tin plating, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); must withstand peak surge currents up to 30 A. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential rail (e.g., output capacitor positive); carries full load current and blocks reverse voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche during voltage transients, enabling robust operation in noisy DC bus environments. |
| Low VF (0.79 V max) | Reduces power dissipation by ~30% vs. comparable PN rectifiers, improving efficiency in 5–24 V output converters. |
| JEDEC-qualified reliability | Meets AEC-Q stress test requirements for high-reliability industrial and automotive-derivative systems. |
| Solderable at +260°C/10 s | Compatible with standard lead-free reflow profiles without degradation, supporting automated SMT assembly. |
Applications
| Power Polarity Protection | DC-DC Freewheeling Diode |
|---|---|
Use Scenario: Input protection for USB-C PD adapters and industrial 24 V fieldbus interfaces against reverse connection. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with input rail; conducts only during correct polarity. Use Value: Prevents catastrophic damage to downstream regulators and controllers with <0.79 V insertion loss at full load. | Use Scenario: Flyback diode in 500 kHz synchronous buck converter powering FPGA core voltage rails. IC Role / Device Role / Timing Role: Freewheeling path for inductor current during high-side MOSFET off-time. Use Value: Enables fast recovery (<50 ns) and low-loss conduction, reducing thermal stress on output stage by 1.2 W vs. PN alternatives. |
| AC-DC Output Rectification | Blocking Diode in Solar Charge Controller |
Use Scenario: Secondary-side rectification in compact 12 V/3 A offline flyback SMPS for smart home hubs. IC Role / Device Role / Timing Role: Converts transformer AC output to regulated DC; operates continuously at 1.0 A average current. Use Value: Delivers >92% rectifier efficiency at full load due to low VF and negligible reverse recovery charge. | Use Scenario: Battery isolation in 12 V photovoltaic charge controller preventing night-time discharge through panels. IC Role / Device Role / Timing Role: Unidirectional blocking diode between PV array and LiFePO₄ battery bank. Use Value: Limits reverse leakage to ≤0.5 mA at 90 V, preserving >99.5% of stored energy over 24-hour dark period. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB190-E3/52T | Same 90 V VRRM and 1.0 A IO, but SMB package with slightly higher VF (0.85 V max) and no JEDEC qualification. | Lacks automotive-grade reliability testing; suitable for commercial-grade consumer power supplies only. | Select when cost is prioritized over long-term reliability in non-critical applications. |
| B190-13-F | SMA package variant with identical electrical specs but higher RθJT (30 °C/W) and smaller footprint. | Lower thermal mass limits sustained current in high-ambient environments (>85°C). | Choose for space-constrained layouts where PCB area is more critical than thermal headroom. |
Compared with SB190-E3/52T and B190-13-F, B190B-13-F offers superior thermal performance (RθJT = 25 °C/W), JEDEC qualification for mission-critical use, and tighter VF control-making it optimal for industrial power modules requiring consistent lifetime reliability.
Availability
B190B-13-F is available at Aetrix Electronics and suitable for DC-DC freewheeling, polarity protection, and AC-DC output rectification requiring stable component supply across production lifecycles.
Supply support for B190B-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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and automotive markets.
The B170/B–B1100/B series targets cost-sensitive, high-volume power conversion applications demanding low VF, robust surge tolerance, and RoHS-compliant packaging in standard SMA/SMB footprints.
FAQ
What is the maximum junction temperature for continuous operation?
The B190B-13-F has an operating temperature range of –65°C to +150°C. For continuous 1.0 A operation, the terminal temperature must not exceed +125°C, as defined in the derating curve. At ambient temperatures above +85°C, thermal design must ensure junction temperature stays within this limit using PCB copper area or airflow.
Is B190B-13-F suitable for automotive applications?
The B190B-13-F is not automotive-qualified; Diodes offers the B190BQ-13-F variant for AEC-Q101 compliance. While B190B-13-F meets JEDEC reliability standards and shares identical electrical specs, it lacks the extended temperature screening and failure analysis required for automotive ECUs or ADAS modules.
How does the guard ring construction improve transient performance?
The guard ring structure surrounds the active Schottky junction to distribute electric field gradients during voltage surges, preventing localized avalanche breakdown at chip edges. This allows the device to survive repetitive 30 A IFSM pulses without parameter shift or parametric drift, enhancing system-level robustness in motor drive or industrial power supply inputs.
Can B190B-13-F replace a 1N5819 in existing designs?
Yes-B190B-13-F matches the 1N5819's 1.0 A/40 V rating in forward current and exceeds it in reverse voltage (90 V vs. 40 V), while offering lower VF (0.79 V vs. 0.9 V) and improved thermal resistance. However, the SMB package differs from DO-41; layout revision is required for mechanical fit and thermal pad alignment.
B190B-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):
- 90 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 90 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B190B-13-F FAQ
1.How can I place an order for B190B-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B190B-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 B190B-13-F reliable?
The price and inventory of B190B-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 B190B-13-F is usually 5 days.
3.What payment methods are accepted for B190B-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B190B-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B190B-13-F?
B190B-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B190B-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 B190B-13-F?
For technical support, including B190B-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B190B-13-F requirements.
6.How does Aetrix verify that B190B-13-F is sourced from the original manufacturer or authorized distributors?
All B190B-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 B190B-13-F meets industry standards.
7.What is the process for return or replacement of B190B-13-F?
All B190B-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B190B-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 B190B-13-F part is unused and in its original packaging.
Return procedure for B190B-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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