V320LC10P Equivalent & Substitute Parts Reference

Part Overview

The V320LC10P is a 510 V, 2.5 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as active and in production. Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits equivalent electrical and mechanical performance within the specified parameter ranges.

Substiute Parts

V320LC10P

Littelfuse Inc.In Stock: 1050V320LC10P Datasheet

Current PartRFQ

V320LA10P

Littelfuse Inc.In Stock: 8387V320LA10P Datasheet

Parametric EquivalentRFQ

B72210S0321K101

EPCOS - TDK ElectronicsIn Stock: 8400B72210S0321K101 Datasheet

MFR RecommendedRFQ

V320LA10

Harris CorporationIn Stock: 4645V320LA10 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V320LC10P are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Maximum AC Voltage: 320 V
• Maximum DC Voltage: 420 V
• Varistor Voltage (Typical): 510 V
• Varistor Voltage Range: 459–561 V
• Surge Current: 2.5 kA
• Number of Circuits: 1

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Disc 10mm

Compliance & Certification (Preferred):

• RoHS3 Compliance
• REACH Status alignment

Parts meeting all electrical and mechanical parameters are classified as parametric equivalents. Deviations in energy absorption, capacitance, or temperature range do not disqualify substitution if the core voltage and current ratings remain within specification.

Parameter Comparison

Engineering Selection Recommendations

V320LA10P (Littelfuse Inc.) – Parametric Equivalent This part is electrically and mechanically identical to the V320LC10P. Both are manufactured by Littelfuse Inc., share the same series designation (LA vs. LC), and meet identical electrical specifications. RoHS3 compliance and REACH unaffected status align with the main part. This substitute is suitable for direct replacement in all applications.

B72210S0321K101 (EPCOS – TDK Electronics) – Manufacturer Recommended Equivalent This part meets all core electrical and mechanical requirements. Energy absorption is 50 J versus 48 J, representing a 4% increase in energy handling capacity. Operating temperature range extends to +105°C, providing enhanced thermal margin. RoHS3 compliance and REACH unaffected status are confirmed. This substitute is suitable for applications where extended temperature performance is beneficial.

V320LA10 (Harris Corporation) – Parametric Equivalent with Compliance Limitations This part meets all electrical and mechanical specifications. However, RoHS non-compliance and undefined REACH status present regulatory constraints. This substitute is suitable only for applications where RoHS3 and REACH compliance are not required.

Frequently Asked Questions (FAQ)

Q: Can V320LA10P be used as a direct replacement for V320LC10P? A: Yes. Both parts share identical electrical parameters (510 V typical varistor voltage, 2.5 kA surge current), mechanical configuration (through-hole, disc 10mm), and compliance certifications (RoHS3, REACH unaffected). The substitution is direct.

Q: What is the difference between V320LC10P and B72210S0321K101? A: The primary differences are manufacturer (Littelfuse vs. EPCOS–TDK) and energy absorption (48 J vs. 50 J). All voltage and current ratings are identical. The B72210S0321K101 operates across a wider temperature range (−40 to +105°C vs. −55 to +85°C). Both are RoHS3 compliant.

Q: Is V320LA10 suitable for new designs? A: V320LA10 meets electrical and mechanical specifications but is RoHS non-compliant and has undefined REACH status. It is suitable only for applications where regulatory compliance is not mandated. For new designs subject to RoHS3 or REACH requirements, V320LA10P or B72210S0321K101 are recommended.

Q: Can these parts be used interchangeably in PCB layouts? A: Yes. All substitute parts use identical through-hole mounting and disc 10mm packaging. PCB footprints and lead spacing are compatible across all listed equivalents.

Q: What inventory levels are available for each substitute? A: V320LC10P: 1,018 pcs; V320LA10P: 8,300 pcs; B72210S0321K101: 8,309 pcs; V320LA10: 4,612 pcs.