511KD20J-F Equivalent & Substitute Parts

Part Overview

The 511KD20J-F 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 with 854 units in stock. Equivalent substitute parts are identified based on matching electrical specifications, mechanical form factor, and operational parameters to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value	Unit
Varistor Voltage (Typical)	510	V
Varistor Voltage Range (Min-Max)	459 - 561	V
Current - Surge	10	kA
Maximum AC Voltage	320	V
Maximum DC Voltage	415	V
Energy Absorption	360	J
Capacitance @ 1 kHz	780	pF
Operating Temperature Range	-40 to 105	°C
Number of Circuits	1	—
Mounting Type	Through Hole	—
Package / Case	Disc 20mm	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

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

Electrical Equivalence Criteria:

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

Mechanical Equivalence Criteria:

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

Environmental Equivalence Criteria:

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

The substitute part SFV20D511K manufactured by SETsafe | SETfuse meets all electrical, mechanical, and environmental parameters specified for the 511KD20J-F, establishing it as a parametric equivalent for direct replacement applications.

Parameter Comparison

Parameter	511KD20J-F (YAGEO)	SFV20D511K (SETsafe \| SETfuse)	Match Status
Varistor Voltage (Min)	459 V	459 V	Equivalent
Varistor Voltage (Typ)	510 V	510 V	Equivalent
Varistor Voltage (Max)	561 V	561 V	Equivalent
Current - Surge	10 kA	10 kA	Equivalent
Maximum AC Volts	320 V	320 V	Equivalent
Maximum DC Volts	415 V	415 V	Equivalent
Energy	360 J	360 J	Equivalent
Number of Circuits	1	1	Equivalent
Capacitance @ 1 kHz	780 pF	780 pF	Equivalent
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	Disc 20mm	Disc 20mm	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both the 511KD20J-F and SFV20D511K are active production components suitable for transient voltage suppression applications requiring 510 V nominal protection with 10 kA surge capacity.

511KD20J-F (YAGEO):

Manufacturer: YAGEO (established semiconductor manufacturer)
Product Status: Active
Moisture Sensitivity Level: 1 (Unlimited)
Current Inventory: 854 units
Compliance: ECCN EAR99 classification

SFV20D511K (SETsafe | SETfuse):

Manufacturer: SETsafe | SETfuse
Product Status: Active
Current Inventory: 3390 units
RoHS Status: Non-compliant
REACH Status: Vendor Undefined

Selection between these parts should be based on supply chain requirements, inventory availability, and compliance mandates specific to the application. The 511KD20J-F carries explicit MSL rating and ECCN classification. The SFV20D511K offers higher inventory availability but carries RoHS non-compliance designation.

Frequently Asked Questions (FAQ)

Q: Can SFV20D511K be used as a direct replacement for 511KD20J-F in existing circuit designs?

A: Yes. Both components share identical electrical specifications (510 V nominal varistor voltage, 10 kA surge current, 360 J energy absorption), mechanical form factor (20mm disc through-hole), and operating temperature range (-40°C to 105°C). Direct PCB substitution is supported without circuit modification.

Q: What are the critical parameters that define substitution eligibility for this varistor category?

A: Substitution eligibility is determined by: (1) Varistor voltage rating within the 459-561 V tolerance band, (2) Surge current capacity of 10 kA, (3) Energy absorption of 360 J, (4) Through-hole mounting type, (5) 20mm disc package form factor, and (6) Operating temperature range of -40°C to 105°C. Deviation in any parameter disqualifies substitution.

Q: Are there differences in compliance or regulatory status between these parts?

A: The 511KD20J-F carries explicit Moisture Sensitivity Level 1 (Unlimited) and ECCN EAR99 classification. The SFV20D511K is designated as RoHS non-compliant with undefined REACH status. Applications subject to RoHS or REACH requirements should verify compliance requirements before selection.

Q: What is the capacitance specification and its relevance to substitution?

A: Both parts specify 780 pF capacitance measured at 1 kHz. This parameter is critical for high-frequency circuit behavior and EMI filtering characteristics. Matching capacitance ensures equivalent performance in frequency-dependent applications.

Q: How do inventory levels affect component selection?

A: The 511KD20J-F has 854 units in stock, while SFV20D511K has 3390 units available. For applications requiring immediate delivery or high-volume procurement, the SFV20D511K offers superior availability. For single-unit or low-volume requirements, either part is suitable based on lead time and supply chain preferences.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message