V300LT2P Equivalent & Substitute Parts

Part Overview

The V300LT2P is a 490 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when electrical parameters fall within the allowable tolerance bands for varistor voltage, surge current capacity, and energy absorption while maintaining compatible physical form factors and mounting specifications.

Substiute Parts

V300LT2P

Littelfuse Inc.In Stock: 968V300LT2P Datasheet

Current PartRFQ

B72207S0301K111

EPCOS - TDK ElectronicsIn Stock: 1295B72207S0301K111 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V300LT2P is determined by the following criteria:

• Varistor Voltage Tolerance: Substitute parts must have a typical varistor voltage within the range of 441 V to 539 V, ensuring voltage clamping performance remains within specification.
• Surge Current Rating: Substitute parts must maintain a minimum surge current capacity of 1.2 kA to handle transient events without degradation.
• Energy Absorption: Substitute parts must absorb a minimum of 23 J to ensure adequate thermal and electrical stress handling.
• Physical Form Factor: Substitute parts must use a Disc 7mm package with through-hole mounting to ensure mechanical and electrical compatibility.
• Electrical Compliance: Substitute parts must maintain RoHS3 compliance and REACH unaffected status.
• Product Status: Substitute parts must be active products to ensure ongoing availability and support.

The B72207S0301K111 manufactured by EPCOS - TDK Electronics meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the V300LT2P and B72207S0301K111 are active products with full regulatory compliance. Selection between these components should be based on:

• Availability: The B72207S0301K111 currently has higher inventory (1,277 pcs) compared to the V300LT2P (880 pcs).
• Packaging Format: The V300LT2P is supplied in Tape & Reel format, while the B72207S0301K111 is supplied in Cut Tape format. Packaging selection depends on assembly process requirements.
• Temperature Operating Range: The B72207S0301K111 supports an extended upper temperature limit of 105°C versus 85°C for the V300LT2P. Applications requiring operation above 85°C should specify the EPCOS part.
• Voltage Margin: The V300LT2P provides a higher typical varistor voltage (490 V vs. 470 V). Applications requiring tighter voltage clamping at the upper specification limit should specify the Littelfuse part.

Both parts carry identical regulatory certifications (RoHS3, REACH unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can the B72207S0301K111 be used as a direct replacement for the V300LT2P in all applications?

A: The B72207S0301K111 is compatible with applications designed for the V300LT2P when the operating temperature does not exceed 85°C and the circuit can tolerate a 20 V lower typical varistor voltage. Verify that the application's voltage clamping requirements are met by the 470 V typical rating of the substitute part.

Q: What is the significance of the varistor voltage range overlap?

A: The overlapping varistor voltage ranges (423 – 517 V for the substitute vs. 441 – 539 V for the main part) ensure that both components will clamp transient voltages within compatible thresholds. The substitute part's lower minimum voltage (423 V vs. 441 V) provides additional margin for voltage suppression.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel and Cut Tape packaging formats do not affect electrical performance. Packaging selection is determined by assembly process requirements and handling procedures.

Q: Are there temperature-related constraints for substitution?

A: The B72207S0301K111 supports operation up to 105°C, while the V300LT2P is rated to 85°C. For applications operating between 85°C and 105°C, the EPCOS part is required. For applications below 85°C, both parts are suitable.

Q: How do energy absorption ratings compare?

A: The V300LT2P absorbs 25 J while the B72207S0301K111 absorbs 23 J. This 2 J difference represents an 8% margin and is acceptable for equivalent substitution in standard transient suppression applications. Applications with extreme energy stress should specify the higher-rated Littelfuse component.