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Diodes Incorporated B0530WSQ-7-F
- Part No.:
- B0530WSQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
B0530WSQ-7-F.pdf
- Description:
- DIODE SCHOTTKY 30V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,075
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Product details
Overview
B0530WSQ-7-F from Diodes Incorporated is a surface-mount Schottky barrier rectifier optimized for low-loss DC-DC conversion and reverse polarity protection. It delivers 0.5 A average forward current, 30 V peak repetitive reverse voltage, and a maximum forward voltage drop of 0.45 V at 0.5 A, enabling high-efficiency operation in space-constrained automotive power rails.
For engineers reviewing the B0530WSQ-7-F datasheet, B0530WSQ-7-F pinout, B0530WSQ-7-F application, or B0530WSQ-7-F equivalent, key selection criteria include its AEC-Q101 qualification, SOD323 package thermal resistance (426 °C/W), 500 µA max leakage at 30 V, and suitability for 12 V automotive subsystems requiring robust transient immunity and RoHS-compliant assembly.
Technical Context
This Schottky diode uses guard ring construction to suppress avalanche-induced transients and improve surge robustness in automotive environments. Its low 0.45 V VF at 0.5 A and 58 pF junction capacitance support high-frequency switching in buck converters and load-switching circuits.
Rated for -40 °C to +125 °C operation and qualified per AEC-Q101, it sustains 2 A non-repetitive surge current (8.3 ms half-sine) and exhibits 3.5 A peak repetitive forward current capability-critical for cold-crank and load-dump transient resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 30 V - defines maximum blocking capability in 12 V automotive systems with load-dump spikes |
| Avg Forward Current | 0.5 A - supports continuous power delivery in compact USB-C PD or infotainment rail protection |
| Forward Voltage Drop | 0.45 V @ 0.5 A - reduces conduction loss by ~30% vs. standard PN diodes, improving thermal margin |
| Reverse Leakage | 500 µA @ 30 V - ensures minimal standby power drain in always-on vehicle modules |
| Junction-to-Ambient RθJA | 426 °C/W - requires minimal PCB copper area for thermal management in SOD323 footprint |
| Capacitance | 58 pF @ 0 V - enables clean switching in >1 MHz DC-DC topologies without excessive ringing |
Pinout & Package
Package: SOD323 - ultra-compact 1.3 mm × 1.7 mm surface-mount plastic case with cathode band marking, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current Entry Point | Connected to input/source side in reverse polarity protection or cathode-side switching |
| Cathode | Current Exit Point | Marked with band; ties to load/GND in blocking configurations; determines forward bias direction |
Key Features
| Feature | Design Value |
|---|---|
| Guard Ring Construction | Suppresses edge breakdown during voltage transients, extending reliability in automotive load-dump events |
| AEC-Q101 Qualification | Validated for automotive-grade temperature cycling, humidity, and mechanical shock per stress test requirements |
| Lead-Free & Halogen-Free | Fully RoHS 2 compliant with <900 ppm Br/Cl and <1000 ppm Sb-meets Tier 1 OEM green material mandates |
| Low Thermal Resistance | 426 °C/W junction-to-ambient enables operation up to +125 °C ambient without derating in sealed enclosures |
Applications
| Automotive Infotainment Power Rail | USB-C Port Reverse Polarity Protection |
|---|---|
Use Scenario: Protects head unit 5 V/3.3 V rails from battery misconnection during service or assembly. IC Role / Device Role / Timing Role: Standalone polarity guard placed between connector and LDO input. Use Value: Prevents catastrophic failure with <0.45 V conduction loss-preserving >95% efficiency at full load. | Use Scenario: Blocks reverse current flow when dual-source USB-C ports are hot-plugged with mismatched polarity. IC Role / Device Role / Timing Role: Unidirectional blocking element in Type-C receptacle power path. Use Value: 500 µA leakage at 20 V ensures <10 µW standby drain-critical for battery-backed accessories. |
| DC-DC Converter Output Rectification | Industrial Sensor Node Power Management |
Use Scenario: Used as synchronous rectifier replacement in 1 MHz buck converter supplying MCU core voltage. IC Role / Device Role / Timing Role: Low-VF freewheeling path during high-side switch off-time. Use Value: 58 pF capacitance minimizes switching node ringing; 0.45 V VF cuts conduction loss by 0.225 W vs. Si diode at 0.5 A. | Use Scenario: Isolates backup coin cell from main Li-ion supply in wireless sensor nodes with sleep-mode current <1 µA. IC Role / Device Role / Timing Role: Bidirectional isolation diode in dual-supply OR-ing configuration. Use Value: Guard ring design prevents latch-up during ESD events on 24 V industrial I/O lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54LT1G | Same SOD-323 package; 30 V VRRM, but 0.5 A IO and 0.45 V VF at 0.1 A only (0.55 V typical at 0.5 A) | Higher VF at full load reduces efficiency in sustained 0.5 A applications | Select if cost-sensitive and peak current <0.2 A |
| RB520S-30T1G | 30 V VRRM, 0.5 A IO, but 0.55 V VF @ 0.5 A and no AEC-Q101 qualification | Lacks automotive qualification and guard ring-unsuitable for under-hood use | Select for commercial-grade portable electronics only |
Compared with SBAT54LT1G and RB520S-30T1G, B0530WSQ-7-F uniquely combines AEC-Q101 qualification, guaranteed 0.45 V VF at 0.5 A, and guard ring protection-making it the only choice for production automotive power rails where thermal stability and transient immunity are non-negotiable.
Availability
B0530WSQ-7-F is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C accessory power management, and industrial sensor node designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for B0530WSQ-7-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 for automotive, industrial, and consumer markets.
The B0530WSQ-7-F belongs to Diodes' AEC-Q101-qualified Schottky rectifier product line, engineered specifically for low-voltage, high-efficiency automotive power routing and reverse polarity protection in harsh environments.
FAQ
What is the maximum operating temperature for B0530WSQ-7-F?
The device operates continuously from -40 °C to +125 °C junction temperature. Its SOD323 package and 426 °C/W thermal resistance allow full 0.5 A current rating at +85 °C ambient when mounted per recommended pad layout (AP02001), with derating required above that point per Figure 5.
Is B0530WSQ-7-F suitable for reverse polarity protection in 24 V systems?
No-it is rated for 30 V peak reverse voltage, making it appropriate only for 12 V nominal automotive systems. For 24 V applications, a 40 V or higher VRRM Schottky such as B0540WSQ-7-F is required to maintain sufficient margin against load-dump transients.
Does B0530WSQ-7-F have a specified surge current rating?
Yes: it supports 2 A non-repetitive peak forward surge current (IFSM) for 8.3 ms half-sine waveform, and 3.5 A peak repetitive forward current (IFRM) under same conditions-key for surviving cold-crank and jump-start events in automotive ECUs.
How does the guard ring construction improve reliability?
The guard ring mitigates electric field crowding at the silicon edge, preventing premature avalanche breakdown during voltage transients. This extends device lifetime in automotive applications exposed to load-dump (ISO 7637-2 Pulse 5a) and ISO 16750-2 supply variations without requiring external TVS clamping.
B0530WSQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 30 V
- Capacitance @ Vr, F:
- 58pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -40°C ~ 125°C
B0530WSQ-7-F FAQ
1.How can I place an order for B0530WSQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B0530WSQ-7-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 B0530WSQ-7-F reliable?
The price and inventory of B0530WSQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B0530WSQ-7-F is usually 5 days.
3.What payment methods are accepted for B0530WSQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B0530WSQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B0530WSQ-7-F?
B0530WSQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B0530WSQ-7-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 B0530WSQ-7-F?
For technical support, including B0530WSQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B0530WSQ-7-F requirements.
6.How does Aetrix verify that B0530WSQ-7-F is sourced from the original manufacturer or authorized distributors?
All B0530WSQ-7-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 B0530WSQ-7-F meets industry standards.
7.What is the process for return or replacement of B0530WSQ-7-F?
All B0530WSQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with B0530WSQ-7-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 B0530WSQ-7-F part is unused and in its original packaging.
Return procedure for B0530WSQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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