V300LA2 Equivalent & Substitute Parts

Part Overview

The V300LA2 is a 490 V, 1.2 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This component features a through-hole disc package (7mm) and is rated for single-circuit protection with 25 J energy absorption capability.

The V300LA2 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for maintenance, repair, and new production applications where this component specification remains required.

Substiute Parts

V300LA2

Littelfuse Inc.In Stock: 1057V300LA2 Datasheet

Current PartRFQ

V300LA2P

Littelfuse Inc.In Stock: 39762V300LA2P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V300LA2 is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor voltage range (minimum, typical, maximum): 441 V to 539 V
• Surge current rating: 1.2 kA
• Maximum AC and DC voltage ratings: 300 V AC / 405 V DC
• Energy absorption: 25 J
• Operating temperature range: -55°C to 85°C
• Mounting configuration: Through hole
• Package form factor: Disc 7mm
• Circuit count: Single circuit (1)
• Capacitance specification: 70 pF @ 1 MHz

Parts meeting all these criteria are classified as direct electrical and mechanical equivalents. Packaging format (bulk vs. other configurations) does not affect electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

The V300LA2P is a direct electrical and mechanical equivalent to the V300LA2. Both components are manufactured by Littelfuse Inc. within the LA series and share identical electrical specifications across all rated parameters.

The primary distinction is product status: the V300LA2 is obsolete, while the V300LA2P is active. Both components maintain ROHS3 compliance, identical moisture sensitivity classification (MSL 1), and equivalent regulatory classifications (ECCN EAR99, HTSUS 8533.40.4000).

For applications requiring the V300LA2 specification, the V300LA2P provides full functional and mechanical compatibility with improved supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can V300LA2P be used as a direct replacement for V300LA2?

A: Yes. The V300LA2P meets all electrical and mechanical specifications of the V300LA2, including varistor voltage range (441–539 V typical 490 V), surge current (1.2 kA), energy rating (25 J), operating temperature (-55°C to 85°C), and through-hole disc 7mm package configuration.

Q: What is the difference between V300LA2 and V300LA2P?

A: The components are electrically and mechanically identical. The difference is packaging format (V300LA2P is supplied in bulk) and product status (V300LA2 is obsolete; V300LA2P is active production).

Q: Are there any compliance or certification differences?

A: No. Both components carry identical RoHS3 compliance, MSL 1 rating, ECCN EAR99 classification, and HTSUS code 8533.40.4000.

Q: Does the through-hole mounting configuration remain the same?

A: Yes. Both the V300LA2 and V300LA2P use identical through-hole mounting with a disc 7mm package form factor.

Q: What parameters must remain constant for substitution?

A: Varistor voltage (490 V typical), surge current (1.2 kA), maximum AC/DC ratings (300 V AC / 405 V DC), energy absorption (25 J), operating temperature range (-55°C to 85°C), and package configuration (through-hole disc 7mm) must all remain unchanged for electrical and mechanical compatibility.