Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
820KD05
YAGEO
MOV DISC 5MM,82V 0.4KA,BULK
6509 Pcs New Original In Stock
82 V 400 A Varistor 1 Circuit Through Hole Disc 5mm
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (41 Ratings)
820KD05
Product Overview
10419670
DiGi Electronics Part Number
820KD05-DGManufacturer
YAGEO
820KD05
Description
MOV DISC 5MM,82V 0.4KA,BULKInventory
6509 Pcs New Original In Stock
82 V 400 A Varistor 1 Circuit Through Hole Disc 5mm
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
820KD05 Technical Specifications
Category
Transient Voltage Suppressors (TVS), Varistors, MOVs
Packaging
Bulk
Series
05D
Product Status
Active
Maximum AC Volts
50 V
Maximum DC Volts
65 V
Varistor Voltage (Min)
74 V
Varistor Voltage (Typ)
82 V
Varistor Voltage (Max)
90 V
Current - Surge
400 A
Energy
2.5J
Number of Circuits
1
Capacitance @ Frequency
300 pF @ 1 kHz
Operating Temperature
-40°C ~ 105°C (TA)
Features
-
Mounting Type
Through Hole
Package / Case
Disc 5mm
Datasheet & Documents
Datasheets
Download 820KD05 Product Specification (PDF)
HTML Datasheet
820KD05-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8533.40.4000
Additional Information
Other Names
13-820KD05
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
전문적이고 친절한 응대로 매우 만족스럽습니다. 앞으로도 계속 이용할 겁니다.
грудня 02, 2025
The support from DiGi Electronics' team is top-notch, making troubleshooting quick and easy.
грудня 02, 2025
DiGi Electronics' prices are a breath of fresh air in the tech market — affordable and transparent.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in risks when using the YAGEO 820KD05 MOV in a 48V DC power supply circuit?
When designing the YAGEO 820KD05 into a 48V DC system, the primary risk is exceeding the maximum DC voltage rating of 65V during transient events or load dumps. The 820KD05 has a typical varistor voltage of 82V, but clamping may initiate above 74V, risking damage if sustained overvoltage occurs. Ensure system-level protection coordination so upstream fusing clears faults before the 2.5J energy limit is exceeded. Additionally, monitor leakage current near end-of-life, as degradation can lead to thermal runaway in continuous DC applications.
How does the YAGEO 820KD05 compare to the Littelfuse VDR05K82P in terms of surge durability for industrial surge immunity?
Both the YAGEO 820KD05 and Littelfuse VDR05K82P are 5mm disc MOVs with similar varistor voltages (82V typ) and 400A surge ratings, making them comparable for 1kA 8/20μs single-event surges per IEC 61000-4-5. However, the 820KD05's energy rating of 2.5J is slightly lower than the VDR05K82P's ~3J, meaning the Littelfuse part may offer better endurance under repeated surge stress. For critical industrial designs expecting frequent transients, the VDR05K82P may provide longer field life; however, the 820KD05 remains suitable for typical industrial environments with proper circuit fusing and thermal management.
Can the YAGEO 820KD05 be used as a drop-in replacement for the TDK B72205-S0821-R500 in a telecom line card?
The YAGEO 820KD05 is not a direct replacement for the TDK B72205-S0821-R500 due to key application differences. While both have similar clamping performance, the TDK part is specifically designed for telecom with enhanced reliability under repetitive surges and tightly controlled degradation characteristics. The 820KD05, part of the general-purpose 05D series, lacks telecom-specific qualification and has a lower energy rating (2.5J vs ~4J), increasing failure risk on long loops or high-lightning areas. Use the 820KD05 only in non-critical, cost-sensitive applications where telecom-grade robustness isn't required.
What mounting and PCB layout considerations are critical for reliable operation of the YAGEO 820KD05 in high-temperature environments?
For reliable use of the YAGEO 820KD05 in ambient temperatures up to 105°C, implement wide PCB traces (≥1.5mm) for leads to aid heat dissipation and avoid placing near high-heat components like transformers or power resistors. Maintain clearance distances per IPC-2221 for 82V clamping, especially in humid environments to prevent creepage. The through-hole disc design requires stress relief in the leads to avoid cracking during thermal cycling. Also, since the 820KD05 has MSL 1 (unlimited floor life), moisture is not a concern, but ensure post-assembly cleanliness to avoid surface leakage paths that accelerate degradation.
What are the failure mode risks of the YAGEO 820KD05 when exposed to sub-clamping level surges over time?
The YAGEO 820KD05 can degrade gradually when exposed to repetitive surges below its 400A rating—such as induced transients from nearby switching loads. This causes incremental material fatigue in the ZnO grains, increasing leakage current and reducing varistor voltage over time. Eventually, this may lead to thermal runaway, especially in DC circuits without current-limiting fusing. To mitigate, include a thermal disconnect or combine the 820KD05 with a series fuse rated below its catastrophic failure energy threshold. Monitor leakage in high-reliability systems during maintenance cycles to preempt field failures.
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.
820KD05 CAD Models
YAGEO 820KD05 PCB symbols & footprints
productDetail
