VE17P00251K Equivalent & Substitute Parts

Part Overview

The VE17P00251K is a 390 V, 6 kA Transient Voltage Suppressor (TVS) varistor manufactured by KYOCERA AVX in a 17mm disc through-hole package. This component is designed for transient voltage protection in electronic circuits with a maximum DC voltage rating of 320 V and energy absorption capacity of 140 J. The part is currently obsolete, making equivalent substitutes necessary for ongoing design requirements and system maintenance.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	390 V
Varistor Voltage Range	351 V – 429 V
Current - Surge	6 kA
Maximum DC Volts	320 V
Maximum AC Volts	250 V
Energy Absorption	140 J
Number of Circuits	1
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 125°C
Package / Case	Disc 17mm

Substitute Part Grouping Explanation

Substitution for the VE17P00251K is determined by the following critical electrical parameters:

Varistor voltage rating within the specified range (351 V – 429 V typical 390 V)
Surge current capacity of 6 kA or greater
Maximum DC voltage rating of 320 V
Maximum AC voltage rating of 250 V
Single-circuit configuration
Through-hole mounting compatibility

Two qualified substitutes meet these criteria with variations in physical package size and energy absorption capacity. Both maintain electrical equivalence within the defined parameter tolerance.

Parameter Comparison

Parameter	VE17P00251K (Main)	B72214S2251K101	ERZ-V20R391
Manufacturer	KYOCERA AVX	EPCOS - TDK Electronics	Panasonic Electronic Components
Varistor Voltage (Typ)	390 V	390 V	390 V
Varistor Voltage Range	351 V – 429 V	351 V – 429 V	351 V – 429 V
Current - Surge	6 kA	6 kA	10 kA
Maximum DC Volts	320 V	320 V	320 V
Maximum AC Volts	250 V	250 V	250 V
Energy Absorption	140 J	100 J	275 J
Number of Circuits	1	1	1
Operating Temperature Range	-40°C to 125°C	-40°C to 105°C	-40°C to 85°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Disc 17mm	Disc 14mm	Disc 21.5mm
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts maintain electrical equivalence to the VE17P00251K within the defined parameter tolerance. Selection between substitutes depends on application-specific constraints:

B72214S2251K101 (EPCOS - TDK Electronics) provides direct electrical equivalence with identical 6 kA surge current rating. This part is ROHS3 compliant and active in production. The 14mm disc package is smaller than the original 17mm, requiring PCB layout verification. Operating temperature range extends to 105°C. Energy absorption is 100 J, lower than the original specification.

ERZ-V20R391 (Panasonic Electronic Components) provides enhanced surge current capacity at 10 kA, exceeding the original 6 kA requirement. This part is ROHS3 compliant and active in production. The 21.5mm disc package is larger than the original 17mm, requiring PCB layout verification. Energy absorption is 275 J, exceeding the original specification. Operating temperature range extends to 85°C.

Both substitutes are REACH unaffected and classified under ECCN EAR99 and HTSUS 8533.40.4000, matching the original part's regulatory classification.

Frequently Asked Questions (FAQ)

Q: Can B72214S2251K101 be used as a direct replacement for VE17P00251K?

A: B72214S2251K101 meets all electrical requirements with identical varistor voltage (390 V), surge current (6 kA), and voltage ratings. Physical package size differs (14mm vs. 17mm disc), requiring PCB layout verification before substitution.

Q: What is the primary difference between the two substitute parts?

A: ERZ-V20R391 provides higher surge current capacity (10 kA vs. 6 kA) and greater energy absorption (275 J vs. 100 J). B72214S2251K101 maintains exact electrical parity with the original part. Both maintain the 390 V varistor voltage rating and 320 V maximum DC voltage specification.

Q: Are both substitutes RoHS compliant?

A: Yes, both B72214S2251K101 and ERZ-V20R391 are ROHS3 compliant. The original VE17P00251K RoHS status is not specified in available documentation.

Q: Does package size affect electrical performance?

A: Package size (disc diameter) does not affect the electrical parameters specified for varistor voltage, surge current, or voltage ratings. Physical dimensions must be verified for PCB layout compatibility and mounting clearance.

Q: What is the operating temperature consideration for substitution?

A: The original VE17P00251K operates from -40°C to 125°C. B72214S2251K101 operates to 105°C, and ERZ-V20R391 operates to 85°C. Applications requiring operation above 105°C cannot use either substitute without thermal management review.

Q: Can ERZ-V20R391 be used in applications designed for 6 kA surge current?

A: Yes. ERZ-V20R391 provides 10 kA surge current capacity, which exceeds the 6 kA requirement. Higher surge current rating does not create incompatibility in applications designed for lower surge current levels.

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