V250LC4P Equivalent & Substitute Parts

Part Overview

The V250LC4P is a 390 V, 1.2 kA disc varistor manufactured by Littelfuse Inc. in the LC series. This transient voltage suppressor is designed for through-hole mounting applications requiring overvoltage protection in circuits with maximum AC voltage ratings of 250 V. The part is currently active in production with 955 units in stock. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives meeting identical or compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	V250LC4P
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Maximum AC Volts	250 V
Maximum DC Volts	330 V
Varistor Voltage (Typ)	390 V
Current - Surge	1.2 kA
Energy	21 J
Mounting Type	Through Hole
Package / Case	Disc 7mm
Operating Temperature	-55°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the V250LC4P is determined by the following critical parameters: maximum AC voltage rating (250 V), maximum DC voltage rating (330 V minimum), varistor voltage typical value (390 V), surge current capacity (1.2 kA), number of circuits (1), mounting type (through hole), and RoHS3 compliance status.

Parametric equivalents V250LA4P and V250LA4PX2855 are direct substitutes, sharing identical electrical ratings and the same 7mm disc package. Both are manufactured by Littelfuse Inc. and meet all specified parameters without deviation.

The manufacturer-recommended substitute B72207S0251K101 (EPCOS - TDK Electronics) maintains electrical equivalence across maximum AC voltage, maximum DC voltage, varistor voltage range, surge current, and RoHS3 compliance. This part differs in package size (9mm disc versus 7mm disc) and operating temperature range (-40°C ~ 105°C versus -55°C ~ 85°C). The 9mm package and extended upper temperature rating represent design variations that may require mechanical validation in the target application.

Parameter Comparison

Parameter	V250LC4P	V250LA4P	V250LA4PX2855	B72207S0251K101
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	EPCOS - TDK Electronics
Maximum AC Volts	250 V	250 V	250 V	250 V
Maximum DC Volts	330 V	330 V	330 V	320 V
Varistor Voltage (Min)	351 V	351 V	351 V	351 V
Varistor Voltage (Typ)	390 V	390 V	390 V	390 V
Varistor Voltage (Max)	429 V	429 V	429 V	429 V
Current - Surge	1.2 kA	1.2 kA	1.2 kA	1.2 kA
Energy	21 J	21 J	21 J	19 J
Number of Circuits	1	1	1	1
Operating Temperature	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 85°C	-40°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Disc 7mm	Disc 7mm	Disc 7mm	Disc 9mm
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

V250LA4P and V250LA4PX2855 are direct parametric equivalents to the V250LC4P. Both parts are manufactured by Littelfuse Inc., maintain identical electrical specifications, and use the same 7mm disc package. Selection between these three Littelfuse parts is based on inventory availability and supply chain considerations, as all three are active products with ROHS3 compliance and REACH unaffected status.

B72207S0251K101 (EPCOS - TDK Electronics) is a manufacturer-recommended substitute with equivalent electrical performance in surge current, varistor voltage range, and AC/DC voltage ratings. This part features a 9mm disc package and an extended operating temperature range (-40°C ~ 105°C). The maximum DC voltage rating is 320 V, which is 10 V lower than the V250LC4P specification of 330 V. Selection of B72207S0251K101 requires confirmation that the application circuit design accommodates the larger package footprint and that the reduced maximum DC voltage margin does not compromise system protection requirements.

All substitute parts maintain active product status and full RoHS3 and REACH compliance, ensuring regulatory alignment with the original V250LC4P specification.

Frequently Asked Questions (FAQ)

Q: Can V250LA4P and V250LA4PX2855 be used interchangeably with V250LC4P?

A: Yes. Both parts are parametric equivalents manufactured by Littelfuse Inc. with identical electrical ratings (250 V AC, 330 V DC, 390 V varistor voltage, 1.2 kA surge current) and the same 7mm disc package. No circuit modifications are required.

Q: What are the key differences between V250LC4P and B72207S0251K101?

A: The primary differences are manufacturer (Littelfuse versus EPCOS - TDK Electronics), package size (7mm disc versus 9mm disc), operating temperature range (-55°C ~ 85°C versus -40°C ~ 105°C), energy rating (21 J versus 19 J), and maximum DC voltage (330 V versus 320 V). Electrical performance for surge current and varistor voltage is equivalent.

Q: Is the 9mm package of B72207S0251K101 compatible with a circuit designed for the 7mm package of V250LC4P?

A: Package compatibility depends on the physical layout and mounting hole spacing of the target circuit board. The 9mm disc is larger than the 7mm disc and may not fit in applications with space constraints or fixed mounting hole patterns. Mechanical validation is required before substitution.

Q: Does the 320 V maximum DC voltage of B72207S0251K101 affect its use as a substitute?

A: The V250LC4P specifies 330 V maximum DC voltage, while B72207S0251K101 specifies 320 V. This 10 V difference represents a reduced safety margin. Substitution is acceptable only if the application circuit operates below 320 V DC and does not require the full 330 V margin for system protection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. V250LA4P, V250LA4PX2855, and B72207S0251K101 are all ROHS3 compliant and REACH unaffected, matching the regulatory status of the V250LC4P.

Q: What inventory levels are available for each part?

A: V250LC4P has 955 units in stock, V250LA4P has 1834 units, V250LA4PX2855 has 9925 units, and B72207S0251K101 has 15887 units in stock.

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