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KCU20A30
KYOCERA AVX
DIODE ARRAY GP 300V 20A TO247
1444 Pcs New Original In Stock
Diode Array 300 V 20A Through Hole TO-247-3
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5.0 / 5.0
- (208 Ratings)
KCU20A30
Product Overview
12937077
DiGi Electronics Part Number
KCU20A30-DGManufacturer
KYOCERA AVX
KCU20A30
Description
DIODE ARRAY GP 300V 20A TO247Inventory
1444 Pcs New Original In Stock
Diode Array 300 V 20A Through Hole TO-247-3
Quantity
Minimum 1
Minimum 1
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KCU20A30 Technical Specifications
Category
Diodes, Rectifiers, Diode Arrays
Packaging
Tube
Series
-
Product Status
Active
Diode Configuration
-
Technology
Standard
Voltage - DC Reverse (Vr) (Max)
300 V
Current - Average Rectified (Io) (per Diode)
20A
Voltage - Forward (Vf) (Max) @ If
1.4 V @ 10 A
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)
35 ns
Current - Reverse Leakage @ Vr
25 µA @ 300 V
Operating Temperature - Junction
-40°C ~ 150°C
Mounting Type
Through Hole
Package / Case
TO-247-3
Supplier Device Package
TO-247
Datasheet & Documents
HTML Datasheet
KCU20A30-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
1253-KCU20A30
478-KCU20A30
1253-KCU20A30-DG
Standard Package
25
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
每次需要幫助時，DiGi的售後服務都非常迅速且有效率，讓我感受到非常專業。
Dec 02, 2025
Chez DiGi Electronics, nous sommes assurés d’un stock suffisant et d’un support de qualité.
Dec 02, 2025
Their logistics team seems highly organized; my deliveries are always on time, and packaging is well-prepared to prevent any damage during transit.
Dec 02, 2025
Their reliable shipping schedule is critical for our production timelines.
Dec 02, 2025
I am always satisfied with the quality and affordability of their products, thanks to consistent standards and transparent pricing.
Dec 02, 2025
Their pricing options are budget-friendly, and their customer care is simply excellent.
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Frequently Asked Questions (FAQ)
Can the KCU20A30 diode array from KYOCERA AVX be used as a drop-in replacement for the Vishay VS-20ETF06PBF in a 20A, 300V industrial rectifier circuit, and what design risks should I consider during the swap?
While the KCU20A30 and Vishay VS-20ETF06PBF are both 300V, 20A TO-247 packaged fast recovery diodes with similar forward voltage and reverse leakage specs, direct replacement requires careful evaluation. The KCU20A30 has a faster reverse recovery time (35 ns vs. ~50 ns for the VS-20ETF06PBF), which may reduce switching losses but can increase voltage overshoot due to higher dI/dt during turn-off. Verify snubber circuit compatibility and ensure PCB layout minimizes parasitic inductance to avoid ringing. Also confirm thermal interface compatibility—both use TO-247-3, but heatsink mounting torque and pad insulation requirements may differ slightly. Always perform thermal validation under full load before full deployment.
What are the critical thermal management considerations when paralleling two KCU20A30 diodes in a high-current DC-DC converter output stage, and how can I avoid current imbalance?
Paralleling KCU20A30 diodes requires strict attention to thermal coupling and forward voltage matching to prevent current hogging. Even small Vf differences at high current can cause one diode to carry significantly more load, leading to thermal runaway. Mount both KCU20A30 devices on a shared, evenly heated heatsink with minimal thermal resistance variance, and use thermal interface materials of identical thickness and conductivity. Include small ballast resistors (e.g., 0.1–0.5 Ω, 2W) in series with each anode to promote current sharing. Monitor junction temperatures under dynamic loads—since the KCU20A30 operates up to 150°C, ensure ambient conditions and airflow keep both diodes within a 10°C delta to maintain reliability.
Is the KCU20A30 suitable for use in a 48V to 12V automotive buck converter operating at 500 kHz, given its 35 ns reverse recovery time and 1.4 V forward drop at 10A?
The KCU20A30 can be used in a 500 kHz automotive buck converter, but with important caveats. While its 35 ns trr is acceptable for this frequency, the relatively high forward voltage (1.4 V @ 10A) results in significant conduction losses—especially at light loads—impacting overall efficiency. In a synchronous buck topology, consider whether a MOSFET-based solution would offer better system efficiency despite higher complexity. If using the KCU20A30 as a freewheeling diode, ensure dead-time control minimizes reverse recovery stress. Also, validate performance across the full automotive temperature range (-40°C to 150°C), as Vf decreases with temperature, potentially increasing peak current during transients. EMI filtering may be needed due to fast switching edges.
How does the moisture sensitivity level (MSL 1) of the KCU20A30 impact handling and storage in high-volume manufacturing, and what precautions are necessary during assembly?
The KCU20A30’s MSL 1 rating means it is not moisture-sensitive and can be stored indefinitely under normal conditions without dry packing or bake requirements—ideal for JIT manufacturing environments. However, this does not eliminate standard ESD precautions; always handle the KCU20A30 with grounded tools and personnel, especially since TO-247 packages have exposed leads. During wave soldering or hand rework, control peak temperatures to stay within the device’s thermal profile (typically < 260°C for 10 sec) to avoid internal bond wire damage. Unlike plastic-encapsulated SMD diodes, through-hole mounting reduces popcorning risk, but ensure no mechanical stress is applied to leads during insertion to prevent package cracking.
What failure modes should I anticipate when using the KCU20A30 in a solar inverter application with frequent partial shading and rapid load transients, and how can I design for long-term reliability?
In solar inverters with partial shading, the KCU20A30 may experience repeated reverse recovery stress and thermal cycling due to fluctuating currents, increasing risk of bond wire fatigue or die attach degradation over time. The 35 ns trr helps reduce switching losses, but rapid dI/dt during recovery can induce voltage spikes that stress downstream components. Mitigate this with RC snubbers across each KCU20A30 and ensure the DC bus capacitor bank has low ESR to absorb transients. Operate the diode well below its 20A average rating—derate to ≤14A continuous in high-ambient environments—to extend lifetime. Additionally, monitor junction temperature via thermal modeling or embedded sensors, as sustained operation near 150°C accelerates aging. Consider conformal coating if deployed in humid or polluted environments to prevent corrosion on leads.
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.
KCU20A30 CAD Models
KYOCERA AVX KCU20A30 PCB symbols & footprints
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