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VBO20-16AO2
IXYS
BRIDGE RECT 1P 1.6KV 31A FO-A
5306 Pcs New Original In Stock
Bridge Rectifier Single Phase Avalanche 1.6 kV QC Terminal FO-A
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*Quantity
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Minimum 1
5.0 / 5.0
- (337 Ratings)
VBO20-16AO2
Product Overview
7658439
DiGi Electronics Part Number
VBO20-16AO2-DGManufacturer
IXYS
VBO20-16AO2
Description
BRIDGE RECT 1P 1.6KV 31A FO-AInventory
5306 Pcs New Original In Stock
Bridge Rectifier Single Phase Avalanche 1.6 kV QC Terminal FO-A
Quantity
Minimum 1
Minimum 1
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VBO20-16AO2 Technical Specifications
Category
Diodes, Bridge Rectifiers
Packaging
-
Series
-
Product Status
Obsolete
Diode Type
Single Phase
Technology
Avalanche
Voltage - Peak Reverse (Max)
1.6 kV
Current - Average Rectified (Io)
31 A
Voltage - Forward (Vf) (Max) @ If
1.8 V @ 55 A
Current - Reverse Leakage @ Vr
300 µA @ 1600 V
Operating Temperature
-40°C ~ 150°C (TJ)
Mounting Type
QC Terminal
Package / Case
4-Square, FO-A
Supplier Device Package
FO-A
Base Product Number
VBO20
Datasheet & Documents
HTML Datasheet
VBO20-16AO2-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
VBO2016AO2
Standard Package
10
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
物流安排得很妥當，從下單到收貨只花了兩天，速度真的很快！
December 02, 2025
La qualité du support après-vente chez DiGi est inégalée à ce prix.
December 02, 2025
Their staff’s friendliness adds a personal touch to the shopping experience.
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Frequently Asked Questions (FAQ)
Can the VBO20-16AO2 be safely used as a drop-in replacement for the VBO25-16AO2 in high-voltage motor drive applications, and what design risks should be considered?
The VBO20-16AO2 is not a direct drop-in replacement for the VBO25-16AO2 due to its lower surge current handling capability, despite matching the 1.6 kV avalanche-rated voltage and similar package. The VBO25-16AO2 is rated for higher repetitive surge currents, making it more suitable for motor drives with frequent inductive kickbacks. Using the VBO20-16AO2 in such applications increases the risk of premature failure under repetitive stress. If considering substitution, ensure the application’s surge energy (especially I²t) remains below the VBO20-16AO2's rated limits, and implement additional snubbing or soft-start circuits to mitigate inrush and transient overload risks. Always verify thermal performance under worst-case load cycling conditions.
How does the avalanche-rated design of the VBO20-16AO2 improve reliability in transient-heavy industrial power supplies?
The VBO20-16AO2's avalanche capability allows it to withstand short-duration voltage transients exceeding its 1.6 kV peak reverse voltage without immediate failure—a critical advantage in industrial environments with switching surges or poor line conditioning. Unlike standard rectifiers that fail short-circuit under overvoltage, the avalanche-rated structure safely clamps and absorbs limited surge energy, improving system ruggedness. However, designers must ensure that transient events do not exceed the specified repetitive avalanche energy (not explicitly in datasheet—must calculate via thermal limits). Use the VBO20-16AO2 in conjunction with upstream inductors or RC snubbers to limit di/dt and avoid cumulative junction degradation in repetitive surge scenarios.
What thermal design considerations are critical when operating the VBO20-16AO2 at its full 31A average rectified current in enclosed power converters?
Operating the VBO20-16AO2 at 31A requires meticulous thermal management due to its high forward voltage drop (up to 1.8V at 55A) and maximum junction temperature of 150°C. In enclosed or convection-cooled systems, inadequate heatsinking can lead to thermal runaway—especially since ambient temperatures up to 70°C are common. Ensure low thermal resistance from the FO-A package’s QC terminal to heatsink using proper clamping force and thermal interface material. Monitor case temperature during prototyping; if Tc exceeds 100°C, derate current or add forced airflow. Avoid shared heatsinks with other high-power devices unless thermal coupling is modeled and accounted for in worst-case margining.
Is the VBO20-16AO2 suitable for use in series-connected diode strings for voltages above 1.6 kV, and how should leakage current matching be handled?
While the VBO20-16AO2 is rated for 1.6 kV peak reverse voltage, it can be used in series configurations for higher voltage systems, but careful attention must be paid to reverse leakage current matching and dynamic voltage sharing. At 1600 V, the VBO20-16AO2 has a max leakage of 300 µA, which—due to positive temperature coefficient—can lead to thermal instability if devices are not closely matched or thermally coupled. Use high-value balancing resistors (e.g., 100–200 kΩ, 1W) across each diode to equalize static voltage, and add small capacitors (1–10 nF) for transient sharing. Always de-rate total string voltage by at least 20% and account for manufacturing spread in Vf and leakage when calculating worst-case stress on individual VBO20-16AO2 units.
Given the VBO20-16AO2 is marked as obsolete, what long-term design-in risks exist and how can supply chain continuity be ensured?
Designing in the VBO20-16AO2 carries significant long-term risk due to its obsolete status, meaning no guaranteed future production and potential price volatility or counterfeit exposure as inventory depletes. While 5200 pcs are available now, this limits scalability for high-volume or long-lifecycle products. Mitigate this by securing lifetime buys from authorized suppliers and verifying traceability to avoid counterfeits. Evaluate alternative solutions such as newer generation avalanche-rated bridges from Littelfuse or onsemi (e.g., S30VBG60—though voltage differs) and conduct comparative thermal and surge testing. Additionally, consider redesigning with discrete avalanche diodes or TVS-protected bridges for improved long-term availability and serviceability.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
VBO20-16AO2 CAD Models
IXYS VBO20-16AO2 PCB symbols & footprints
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