511KD20J Equivalent & Substitute Parts

Part Overview

The 511KD20J is a metal oxide varistor (MOV) disc manufactured by YAGEO, classified as a Transient Voltage Suppressor (TVS) component. This through-hole disc varistor is rated for 510 V nominal voltage with a 10 kA surge current capacity and 360 J energy absorption. The component is designed for transient overvoltage protection in electronic circuits and is currently in active production status. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

511KD20J

YAGEOIn Stock: 1108511KD20J Datasheet

Current PartRFQ

SFV20D511K

SETsafe | SETfuseIn Stock: 3473SFV20D511K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 511KD20J is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Varistor voltage rating: 510 V nominal (459 V minimum to 561 V maximum)
• Surge current capacity: 10 kA
• Maximum AC voltage: 320 V
• Maximum DC voltage: 415 V
• Energy absorption: 360 J
• Capacitance at 1 kHz: 780 pF

Mechanical Parameters (Must Match):

• Mounting type: Through Hole
• Package form: Disc 20mm
• Number of circuits: 1

Environmental Parameters (Must Match):

• Operating temperature range: -40°C to 105°C

The substitute part SFV20D511K manufactured by SETsafe | SETfuse meets all electrical, mechanical, and environmental specifications required for direct substitution with the 511KD20J.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 511KD20J (YAGEO)

The 511KD20J is the original specified component with active product status and confirmed inventory availability (1012 pcs in stock). This part carries Moisture Sensitivity Level 1 (unlimited) and is classified under ECCN EAR99 with HTSUS code 8533.40.4000.

Substitute Part: SFV20D511K (SETsafe | SETfuse)

The SFV20D511K is a parametric equivalent offering identical electrical, mechanical, and environmental specifications. This substitute maintains active product status with higher inventory availability (3390 pcs in stock). However, the SFV20D511K is classified as RoHS non-compliant with undefined REACH status. Selection of this substitute requires verification of compliance requirements for the end application.

Both parts are suitable for direct substitution based on functional parameters. Component selection should be determined by compliance requirements, inventory availability, and supply chain considerations specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the SFV20D511K replace the 511KD20J in all applications?

A: The SFV20D511K is electrically and mechanically equivalent to the 511KD20J across all specified parameters. Substitution is valid from a functional standpoint. However, compliance status differs: the 511KD20J carries standard certifications while the SFV20D511K is RoHS non-compliant. Application compliance requirements must be evaluated before substitution.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution eligibility is determined by exact matching of: varistor voltage rating (510 V nominal), surge current capacity (10 kA), maximum AC/DC voltage ratings (320 V / 415 V), energy absorption (360 J), capacitance (780 pF @ 1 kHz), mounting type (through hole), package form (disc 20mm), and operating temperature range (-40°C to 105°C).

Q: Are there any package or form factor differences between these parts?

A: Both the 511KD20J and SFV20D511K use identical through-hole disc 20mm packaging. No form factor or mounting modifications are required for substitution.

Q: What is the difference in inventory availability?

A: The 511KD20J has 1012 pcs in stock, while the SFV20D511K has 3390 pcs available. The substitute part offers higher inventory levels for applications requiring larger quantities or extended supply assurance.

Q: How do the compliance certifications differ?

A: The 511KD20J carries standard product certifications including Moisture Sensitivity Level 1. The SFV20D511K is marked as RoHS non-compliant with undefined REACH status. Applications subject to RoHS or REACH regulations must use the 511KD20J or verify compliance exceptions.