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Diodes Incorporated B190Q-13-F
- Part No.:
- B190Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B190Q-13-F.pdf
- Description:
- DIODE SCHOTTKY 90V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,150
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Product details
Overview
B190Q-13-F from Diodes Incorporated is a 1.0A, 90V peak repetitive reverse voltage (VRRM) Schottky barrier rectifier in SMA package, featuring 0.79V max forward voltage at 1.0A and 0.5mA max reverse leakage at rated VR and +25°C, used for polarity protection, freewheeling, and DC-DC converter output rectification in automotive power supplies.
For engineers reviewing the B190Q-13-F datasheet, B190Q-13-F pinout, B190Q-13-F application, or B190Q-13-F equivalent, this device is selected for low VF, high surge tolerance (30A IFSM), AEC-Q101 qualification, and RoHS-compliant lead-free plating in high-reliability 125°C terminal temperature environments.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient immunity and supports automated surface-mount assembly. Its low 0.79V VF at 1.0A enables high-efficiency operation in low-voltage DC-DC outputs and reverse polarity protection circuits where conduction loss must be minimized.
Thermal resistance junction-to-terminal is 25°C/W, enabling reliable 1.0A average forward current operation up to +125°C terminal temperature. Total capacitance is 80pF at 4V reverse bias and 1MHz, supporting high-frequency switching applications including flyback snubbers and synchronous rectifier auxiliary paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum non-repetitive reverse voltage the device blocks without breakdown |
| IO (AV) | 1.0 A - continuous average forward current at +125°C terminal temperature |
| VF max | 0.79 V - worst-case forward drop at 1.0A and +25°C, defining conduction loss in power path |
| IR max | 0.5 mA - maximum reverse leakage at rated VRRM and +25°C, critical for blocking integrity |
| IFSM | 30 A - non-repetitive 8.3ms half-sine surge rating, supporting inrush and fault-current handling |
| RθJT | 25 °C/W - thermal resistance from junction to terminal, used to calculate junction temperature rise |
| CT | 80 pF - total junction capacitance at 4V VR and 1MHz, affecting high-frequency switching behavior |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated terminals, cathode band marking, moisture sensitivity level 1 per J-STD-020, weight ≈0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or source in rectification path |
| Cathode | Forward current exit / reverse blocking node | Marked with band; connects to higher-potential rail in polarity protection or freewheeling configurations |
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-grade reliability under temperature cycling, HTRB, and HTGB stress tests |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb |
| High-temperature solderability | Rated for 10-second exposure at +260°C, compatible with standard reflow profiles |
Applications
| Automotive Body Control Module (BCM) | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Reverse polarity protection on 12V battery input rail of BCM microcontroller power supply. IC Role / Device Role / Timing Role: Unidirectional blocking diode preventing damage during battery misconnection. Use Value: 0.79V VF minimizes voltage drop and heat generation at 1A load, preserving system efficiency and thermal margin. | Use Scenario: Freewheeling path in synchronous buck converter secondary-side switch node. IC Role / Device Role / Timing Role: Low-loss recirculation path for inductor current during high-side FET off-time. Use Value: 30A IFSM withstands transient inductor energy dump; 80pF CT limits switching noise coupling. |
| Telecom Power Supply Input Protection | Consumer AC-DC Adapter Secondary Rectification |
Use Scenario: Blocking diode in redundant 48V DC input OR-ing configuration for telecom shelf power. IC Role / Device Role / Timing Role: Prevents backfeed between parallel power sources while enabling hot-swap capability. Use Value: 90V VRRM exceeds 48V nominal × 1.5 derating margin; 0.5mA IR ensures minimal standby power loss. | Use Scenario: Output rectifier in isolated flyback adapter delivering 5V/2A to USB peripherals. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC output with minimal conduction loss. Use Value: Low VF directly improves adapter efficiency; SMA package supports compact PCB layout and automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB190-E3/5AT (Vishay) | Same 90V VRRM, 1.0A IO, but VF = 0.85V max at 1A; SMA package, RoHS compliant | Slightly higher conduction loss; not AEC-Q101 qualified | Select when automotive qualification is unnecessary and cost sensitivity outweighs 60mV VF penalty |
| SS19 (ON Semiconductor) | 90V VRRM, 1.0A IO, VF = 0.82V max; same SMA package; AEC-Q101 qualified | Higher VF increases conduction loss by ~30mW at 1A; identical thermal and surge specs | Prefer when dual-source supply chain diversification is required and 0.03V VF increase is acceptable |
Compared with SB190-E3/5AT and SS19, B190Q-13-F delivers the lowest VF (0.79V) among 90V/1A automotive-grade Schottky rectifiers in SMA, making it optimal for thermally constrained or efficiency-critical designs where every millivolt of drop matters.
Availability
B190Q-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and telecom power supply input protection requiring stable component supply, AEC-Q101 compliance, and RoHS 3–certified sourcing.
Supply support for B190Q-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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The B190Q-13-F belongs to Diodes' high-voltage Schottky rectifier product line, designed specifically for automotive and industrial power conversion applications demanding low VF, high surge capability, and AEC-Q101 qualification.
FAQ
What is the maximum junction temperature for B190Q-13-F?
The absolute maximum junction temperature is +150°C, and the device is rated for 1.0A average forward current at +125°C terminal temperature. Thermal design must ensure RθJT (25°C/W) and ambient conditions keep TJ ≤ 150°C under full load and worst-case ambient conditions.
Is B190Q-13-F suitable for use in synchronous rectification topologies?
No - B190Q-13-F is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET driver. It functions as a unidirectional freewheeling or output rectifier, but lacks gate drive capability or timing control required for active synchronous rectification.
Does B190Q-13-F have a specified reverse recovery time (trr)?
No - as a Schottky barrier diode, B190Q-13-F has no minority-carrier storage and therefore no defined reverse recovery time. Its switching is inherently fast and lossless compared to PN-junction rectifiers, confirmed by negligible stored charge and absence of trr in the datasheet.
Can B190Q-13-F replace B180Q-13-F in an existing design?
Yes - B190Q-13-F shares identical package (SMA), pinout, thermal characteristics, and forward voltage (0.79V max), with only VRRM increased from 80V to 90V. This provides additional reverse voltage margin without requiring layout or thermal redesign, provided the 10V higher rating aligns with system requirements.
B190Q-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- 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:
- -
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 155°C
B190Q-13-F FAQ
1.How can I place an order for B190Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B190Q-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 B190Q-13-F reliable?
The price and inventory of B190Q-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 B190Q-13-F is usually 5 days.
3.What payment methods are accepted for B190Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B190Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B190Q-13-F?
B190Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B190Q-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 B190Q-13-F?
For technical support, including B190Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B190Q-13-F requirements.
6.How does Aetrix verify that B190Q-13-F is sourced from the original manufacturer or authorized distributors?
All B190Q-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 B190Q-13-F meets industry standards.
7.What is the process for return or replacement of B190Q-13-F?
All B190Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B190Q-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 B190Q-13-F part is unused and in its original packaging.
Return procedure for B190Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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