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Diodes Incorporated B190BQ-13-F
- Part No.:
- B190BQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B190BQ-13-F.pdf
- Description:
- DIODE SCHOTTKY 90V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:6,179
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Product details
Overview
B190BQ-13-F from Diodes Incorporated is a 90 V, 1.0 A high-voltage 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 converter freewheeling paths in automotive power supplies.
For engineers reviewing the B190BQ-13-F datasheet, B190BQ-13-F pinout, B190BQ-13-F application, or B190BQ-13-F equivalent, key selection criteria include peak repetitive reverse voltage (90 V), average rectified current (1.0 A), thermal resistance (25 °C/W), AEC-Q101 qualification, and SMB package compatibility with automated SMT assembly.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient immunity and supports operation from –65°C to +150°C. Its low VF (0.79 V max @ 1 A, +25°C) and low IR (0.5 mA max @ 90 V, +25°C) reduce conduction loss in high-frequency switching topologies.
The device exhibits 80 pF typical junction capacitance at 4 V reverse bias and 30 A non-repetitive peak surge current capability. Thermal resistance from junction to terminal is 25 °C/W, enabling reliable operation at 125°C terminal temperature under full-rated current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum repetitive reverse blocking voltage without breakdown |
| IO | 1.0 A - average rectified output current at TT = +125°C |
| VF max | 0.79 V - maximum forward voltage drop at IF = 1.0 A, TA = +25°C |
| IR max | 0.5 mA - maximum reverse leakage current at VR = 90 V, TA = +25°C |
| RθJT | 25 °C/W - thermal resistance from junction to terminal, critical for heatsinkless PCB layout |
| IFSM | 30 A - peak non-repetitive forward surge current (8.3 ms half-sine) |
| CT | 80 pF - junction capacitance at VR = 4 V, f = 1 MHz, impacts high-frequency switching noise |
Pinout & Package
Package: SMB (Surface Mount Small Outline), molded plastic case with matte tin-plated terminals, cathode band marking, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of circuit; enables low-loss conduction when forward-biased |
| Cathode | Forward current exit / reverse blocking node | Marked by band; connected to higher-potential rail; blocks up to 90 V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient surge robustness without external clamping components |
| AEC-Q101 qualified | Validated for automotive power systems requiring PPAP documentation and IATF 16949 manufacturing control |
| Lead-free, halogen/antimony-free | Meets RoHS 3 and "Green" compliance (<900 ppm Br/Cl, <1000 ppm Sb), suitable for eco-sensitive production |
| SMB package with 260°C solder tolerance | Enables compatibility with standard lead-free reflow profiles and automated pick-and-place assembly |
Applications
| Polarity Protection | DC-DC Converter Freewheeling |
|---|---|
Use Scenario: Reverse battery connection protection in 12 V automotive ECUs. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed in series with input power rail. Use Value: Prevents damage during incorrect battery hookup while adding only 0.79 V drop at 1 A load. | Use Scenario: Flyback path for inductive energy recovery in buck converter output stage. IC Role / Device Role / Timing Role: Freewheeling diode across power inductor during high-side switch off-time. Use Value: Enables high-efficiency operation at >100 kHz switching frequencies due to low VF and 80 pF CT. |
| AC-DC Input Rectification | Re-Circulating Diode in Motor Drive |
Use Scenario: Output rectification in auxiliary 5 V/1 A flyback supply for infotainment system logic rails. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in low-power AC-DC adapters. Use Value: Delivers 1.0 A average current with minimal conduction loss and no gate drive complexity. | Use Scenario: Inductive kickback clamp in 24 V brushed DC motor H-bridge driver. IC Role / Device Role / Timing Role: Recirculation path for back-EMF current during PWM turn-off transitions. Use Value: Limits voltage spikes to ≤90 V with 30 A surge rating, protecting MOSFETs from avalanche failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB190-E3/54 (Vishay) | Same 90 V VRRM, 1.0 A IO, but VF = 0.85 V max @ 1 A; SMB package, RoHS compliant | Higher VF increases conduction loss by ~75 mW at 1 A; not AEC-Q101 qualified | Select if AEC-Q101 is not required and cost is primary constraint |
| SS19 (ON Semiconductor) | 90 V VRRM, 1.0 A IO, VF = 0.82 V max @ 1 A; SMA package (smaller footprint, higher RθJA) | SMA package reduces board area but raises thermal impedance; not automotive-qualified | Select only for space-constrained non-automotive designs where thermal margin exceeds 25 °C/W |
Compared with SB190-E3/54 and SS19, B190BQ-13-F provides lower forward voltage, AEC-Q101 qualification, and verified 25 °C/W RθJT-making it the sole choice for thermally constrained, safety-critical automotive power rails.
Availability
B190BQ-13-F is available at Aetrix Electronics and suitable for automotive ECUs, industrial DC-DC converters, and consumer AC-DC adapters requiring stable component supply, AEC-Q101 compliance, and SMB package consistency.
Supply support for B190BQ-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-reliability power management and signal integrity solutions.
The B190BQ-13-F belongs to the B170BQ–B1100BQ Schottky rectifier family, engineered for high-efficiency, high-temperature automotive and industrial power conversion where low VF and robust surge handling are essential.
FAQ
What is the maximum operating temperature for B190BQ-13-F?
The B190BQ-13-F has an operating and storage temperature range of –65°C to +150°C. Its average rectified current rating of 1.0 A is specified at terminal temperature (TT) = +125°C, and derating begins above that point per the published forward current derating curve. Junction temperature must remain below +150°C under all conditions.
Is B190BQ-13-F suitable for use in AEC-Q101-compliant automotive designs?
Yes. B190BQ-13-F is explicitly AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It meets automotive change control requirements and carries full qualification documentation including stress test reports and process flow validation for under-hood and body-control module applications.
How does the SMB package of B190BQ-13-F compare to SMA in thermal performance?
The SMB package offers lower thermal resistance (RθJT = 25 °C/W) than typical SMA packages (~40–50 °C/W), enabling higher power dissipation without heatsinking. Its larger pad area and shorter thermal path improve heat transfer to the PCB, making it preferable for 1 A continuous operation in compact automotive layouts.
Can B190BQ-13-F replace a standard PN-junction rectifier in a 12 V automotive circuit?
Yes-B190BQ-13-F replaces 1 A PN rectifiers (e.g., 1N4007) in 12 V circuits with significant efficiency gains: its 0.79 V VF cuts conduction loss by ~50% versus ~1.1 V for silicon diodes, reducing thermal load and improving system efficiency, especially in always-on modules like CAN transceivers or sensor interfaces.
B190BQ-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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B190BQ-13-F FAQ
1.How can I place an order for B190BQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B190BQ-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 B190BQ-13-F reliable?
The price and inventory of B190BQ-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 B190BQ-13-F is usually 5 days.
3.What payment methods are accepted for B190BQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B190BQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B190BQ-13-F?
B190BQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B190BQ-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 B190BQ-13-F?
For technical support, including B190BQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B190BQ-13-F requirements.
6.How does Aetrix verify that B190BQ-13-F is sourced from the original manufacturer or authorized distributors?
All B190BQ-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 B190BQ-13-F meets industry standards.
7.What is the process for return or replacement of B190BQ-13-F?
All B190BQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B190BQ-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 B190BQ-13-F part is unused and in its original packaging.
Return procedure for B190BQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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