V320LC40CP Equivalent & Substitute Parts

Part Overview

The V320LC40CP is a 510 V, 10 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc. in a through-hole disc 20mm package. This component is designed for transient voltage protection in electronic circuits and is currently in active production status. Equivalent parts are identified when they meet the same electrical performance specifications and physical packaging requirements, ensuring direct functional replacement without circuit redesign.

Substiute Parts

V320LC40CP

Littelfuse Inc.In Stock: 828V320LC40CP Datasheet

Current PartRFQ

B72220S2321K101

EPCOS - TDK ElectronicsIn Stock: 847B72220S2321K101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V320LC40CP is determined by the following critical parameters:

• Varistor Voltage (Typ): 510 V nominal rating
• Current - Surge: 10 kA maximum surge current capacity
• Maximum AC Volts: 320 V operating voltage
• Package / Case: Disc 20mm through-hole configuration
• Number of Circuits: Single circuit (1)
• RoHS Compliance: ROHS3 Compliant status

The B72220S2321K101 manufactured by EPCOS - TDK Electronics meets these core electrical and mechanical specifications, qualifying it as a manufacturer-recommended equivalent part. Both components share identical nominal varistor voltage, surge current rating, AC voltage rating, and physical package dimensions.

Parameter Comparison

Engineering Selection Recommendations

Both the V320LC40CP and B72220S2321K101 are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The varistor voltage tolerance ranges overlap within acceptable engineering margins (V320LC40CP: 462–558 V; B72220S2321K101: 459–561 V), with both parts centered at 510 V nominal. The energy absorption capacity differs (345 J vs. 273 J), which should be evaluated against specific circuit transient energy requirements. Both components are suitable for direct substitution in through-hole applications requiring 320 V AC maximum operating voltage and 10 kA surge current protection.

Frequently Asked Questions (FAQ)

Q: Can B72220S2321K101 be used as a direct replacement for V320LC40CP?

A: Yes. Both parts share identical maximum AC voltage (320 V), nominal varistor voltage (510 V), surge current rating (10 kA), and disc 20mm through-hole package configuration. Varistor voltage tolerance ranges are compatible within standard engineering margins.

Q: What is the difference in energy absorption between these parts?

A: The V320LC40CP is rated at 345 J energy absorption, while the B72220S2321K101 is rated at 273 J. Circuit designs requiring higher energy dissipation should account for this difference in transient event severity.

Q: Are both parts RoHS compliant?

A: Yes. Both V320LC40CP and B72220S2321K101 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Do these parts have different operating temperature ranges?

A: Yes. The V320LC40CP operates from -55°C to 85°C, while the B72220S2321K101 operates from -40°C to 105°C. Applications requiring extended low-temperature operation should specify the Littelfuse part; applications requiring extended high-temperature operation should specify the EPCOS - TDK part.

Q: Are the capacitance specifications comparable?

A: Capacitance values are measured at different frequencies (V320LC40CP: 7000 pF @ 1 MHz; B72220S2321K101: 1000 pF @ 1 kHz), making direct comparison inappropriate. Frequency-dependent capacitance effects should be evaluated for specific circuit applications.