VE09M00251K Equivalent & Substitute Parts

Part Overview

The VE09M00251K is a 390V 1.2kA varistor manufactured by KYOCERA AVX in a 9mm disc through-hole package. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. Varistors in this voltage and current rating are used for transient voltage suppression in industrial and consumer electronics applications. The availability of active alternative products ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	390 V
Current - Surge	1.2 kA
Maximum DC Volts	320 V
Maximum AC Volts	250 V
Number of Circuits	1
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 125°C

Substitute Part Grouping Explanation

Substitution eligibility for the VE09M00251K is determined by the following critical parameters:

Varistor Voltage (Typ): 390 V ± tolerance range (351 V minimum to 429 V maximum)
Current - Surge: minimum 1.2 kA
Maximum DC Volts: 320 V or higher
Maximum AC Volts: 250 V
Number of Circuits: 1
Mounting Type: Through Hole
Operating Temperature: compatible range with application requirements

All three substitute parts meet these core electrical specifications. Physical package differences (disc diameter: 7mm, 8.5mm, or 9mm) are noted but do not prevent functional substitution in applications with standard PCB footprint tolerances for through-hole mounting.

Parameter Comparison

Parameter	VE09M00251K (Main)	V250LA4P (Littelfuse)	B72207S0251K101 (EPCOS - TDK)	ERZ-V07D391 (Panasonic)
Manufacturer	KYOCERA AVX	Littelfuse Inc.	EPCOS - TDK Electronics	Panasonic Electronic Components
Product Status	Obsolete	Active	Active	Active
Varistor Voltage (Typ)	390 V	390 V	390 V	390 V
Varistor Voltage (Min)	351 V	351 V	351 V	351 V
Varistor Voltage (Max)	429 V	429 V	429 V	429 V
Current - Surge	1.2 kA	1.2 kA	1.2 kA	1.75 kA
Maximum DC Volts	320 V	330 V	320 V	320 V
Maximum AC Volts	250 V	250 V	250 V	250 V
Energy	7.3 J	21 J	19 J	35 J
Number of Circuits	1	1	1	1
Capacitance @ Frequency	130 pF @ 1 kHz	90 pF @ 1 MHz	65 pF @ 1 kHz	130 pF @ 1 kHz
Operating Temperature	-40°C ~ 125°C	-55°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C
Package / Case	Disc 9mm	Disc 7mm	Disc 9mm	Disc 8.5mm
Mounting Type	Through Hole	Disc 7mm	Through Hole	Through Hole
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete VE09M00251K.

B72207S0251K101 (EPCOS - TDK Electronics) provides the closest electrical and physical match, with identical 9mm disc package, matching DC voltage rating (320 V), and ROHS3 compliance. This part is recommended as the primary substitute for direct replacement applications.

V250LA4P (Littelfuse Inc.) meets all core electrical requirements with higher maximum DC voltage (330 V) and extended low-temperature operating range (-55°C). The 7mm disc package requires PCB footprint verification. ROHS3 compliance is confirmed.

ERZ-V07D391 (Panasonic Electronic Components) offers higher surge current capability (1.75 kA) and energy rating (35 J), suitable for applications requiring enhanced transient protection margin. The 8.5mm disc package and ZNR® series designation indicate Panasonic's varistor technology. ROHS3 compliance is confirmed.

All substitutes carry REACH Unaffected status, matching the original part's regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can V250LA4P be used as a direct replacement for VE09M00251K?

A: V250LA4P meets all electrical specifications (390 V typical, 1.2 kA surge, 250 V AC maximum). The primary consideration is the 7mm disc package versus the original 9mm disc. PCB footprint compatibility must be verified for through-hole mounting.

Q: What is the difference between the three substitute options?

A: All three parts share the same varistor voltage (390 V) and surge current (1.2 kA minimum). B72207S0251K101 matches the original 9mm package. V250LA4P uses a 7mm package with higher DC voltage rating. ERZ-V07D391 provides higher surge current (1.75 kA) and energy absorption in an 8.5mm package.

Q: Are all substitutes RoHS and REACH compliant?

A: All three substitute parts are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Does package size affect electrical performance?

A: Package size (7mm, 8.5mm, or 9mm disc) does not affect the core electrical specifications. Physical dimensions impact PCB layout and mounting hole spacing. Through-hole mounting compatibility should be confirmed for each application.

Q: Which substitute is recommended for new designs?

A: B72207S0251K101 is recommended for applications requiring the closest match to the original VE09M00251K specifications and package. For applications with higher transient protection requirements, ERZ-V07D391 offers increased surge current and energy ratings.

Q: What is the operating temperature range consideration?

A: VE09M00251K operates -40°C to 125°C. V250LA4P operates -55°C to 85°C (narrower high-temperature range). B72207S0251K101 operates -40°C to 105°C. ERZ-V07D391 operates -40°C to 85°C. Application temperature requirements must be matched to the selected substitute.

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