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B0530W
HY Electronic (Cayman) Limited
High Speed Switching Diode
185230 Pcs New Original In Stock
Diode 30 V 500mA Surface Mount SOD-123
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5.0 / 5.0
- (191 Ratings)
B0530W
Product Overview
13237391
DiGi Electronics Part Number
B0530W-DGManufacturer
HY Electronic (Cayman) Limited
B0530W
Description
High Speed Switching DiodeInventory
185230 Pcs New Original In Stock
Diode 30 V 500mA Surface Mount SOD-123
Quantity
Minimum 1
Minimum 1
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B0530W Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
-
Series
-
Product Status
Active
Technology
Schottky
Voltage - DC Reverse (Vr) (Max)
30 V
Current - Average Rectified (Io)
500mA
Voltage - Forward (Vf) (Max) @ If
430 mV @ 500 mA
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr
130 µA @ 30 V
Capacitance @ Vr, F
170pF @ 0V, 1MHz
Mounting Type
Surface Mount
Package / Case
SOD-123
Supplier Device Package
SOD-123
Operating Temperature - Junction
-
Datasheet & Documents
Datasheets
Download B0530W Product Specification (PDF)
HTML Datasheet
B0530W-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Affected
ECCN
EAR99
HTSUS
8541.10.0070
Additional Information
Other Names
4024-B0530WTR
Standard Package
5
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Les prix chez DiGi Electronics sont très compétitifs et transparents, je recommande vivement.
Dec 02, 2025
The logistics tracking system they use is accurate and easy to use.
Dec 02, 2025
DiGi Electronics excels in logistics speed, often delivering ahead of expected date, which is very beneficial.
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Frequently Asked Questions (FAQ)
Can the B0530W Schottky diode be safely used in a 24V automotive power rail protection circuit, and what are the key risks given its 30V reverse voltage rating?
While the B0530W’s 30V maximum reverse voltage (Vr) technically exceeds a nominal 24V system, automotive environments experience significant voltage transients—such as load dump spikes that can exceed 40V. Using the B0530W in this application risks catastrophic failure unless protected by a TVS diode or clamp circuit. For reliable operation, we recommend derating to ≤80% of Vr (i.e., ≤24V continuous), but transient immunity must be addressed externally. Consider pairing it with a 36V+ TVS diode (e.g., SMAJ33A) or selecting a higher-voltage alternative like the B140-E3 (40V Vr) for robust automotive designs.
What are the thermal and layout considerations when replacing a through-hole 1N5819 with the surface-mount B0530W in a high-density PCB design?
The B0530W in SOD-123 packaging has significantly lower thermal mass than the DO-41 packaged 1N5819, which reduces heat dissipation capability. At 500mA forward current, ensure adequate copper pour under the cathode pad and use thermal vias if junction temperatures may exceed 125°C. The B0530W’s lower Vf (430mV vs. ~600mV for 1N5819) actually reduces self-heating, partially offsetting package limitations. However, avoid placing it near heat-generating components. Verify actual board-level thermal performance via IR imaging or simulation—especially in enclosed or high-ambient-temperature applications—to prevent premature aging or thermal runaway.
Is the B0530W suitable for reverse polarity protection in battery-powered IoT devices drawing up to 400mA, and how does its leakage current impact standby life?
Yes, the B0530W can serve as reverse polarity protection in low-power IoT devices, but its 130µA reverse leakage at 30V (and full temperature) must be factored into battery life calculations. In a 3.7V Li-ion system, leakage drops to ~10–20µA, but in worst-case hot environments (85°C), it can increase 2–3×. For a 2000mAh battery, this could drain 1.7–5mAh/year just from leakage—significant for multi-year deployments. If ultra-low quiescent loss is critical, consider a MOSFET-based ideal diode circuit (e.g., using LTC4412) or a lower-leakage Schottky like the RB521S30 (≤50µA). The B0530W remains viable if system sleep current dominates leakage losses.
How does the B0530W compare to the Vishay SS1H9 or Diodes Incorporated BAT54S for high-speed signal clamping in 3.3V microcontroller I/O lines, particularly regarding capacitance and switching speed?
The B0530W (170pF @ 0V, 1MHz) has higher junction capacitance than the SS1H9 (~100pF) and BAT54S (~20pF per diode), making it less ideal for high-frequency signal integrity. While its fast recovery time (<500ns) is sufficient for general-purpose clamping, the elevated capacitance can attenuate or distort signals above ~1MHz—problematic for UART, SPI, or ADC reference lines. For 3.3V I/O protection, the BAT54S offers superior speed and lower loading, though it requires dual-diode configuration. Reserve the B0530W for power rail or low-frequency signal clamping; use low-capacitance alternatives when signal fidelity above 500kHz is required.
What reliability concerns should I evaluate before designing in the B0530W for industrial control systems operating continuously at 70°C ambient temperature?
At 70°C ambient, the B0530W’s junction temperature can approach or exceed safe limits under sustained 500mA load, especially with poor PCB thermal design. Schottky diodes like the B0530W exhibit increased reverse leakage and reduced surge current capability at elevated temperatures, raising risks of thermal runaway during fault conditions. Additionally, long-term exposure to high temps accelerates metal migration in the Schottky barrier, potentially causing premature failure. Mitigate by derating current to ≤300mA at 70°C, implementing thermal relief pads, and validating MTBF under worst-case conditions. For mission-critical industrial applications, consider automotive-grade alternatives (e.g., Nexperia PMEG3020CPA) with enhanced reliability testing and wider temperature certifications.
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B0530W CAD Models
HY Electronic (Cayman) Limited B0530W PCB symbols & footprints
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