VC1812M501R004 Equivalent & Substitute Parts

Part Overview

The VC1812M501R004 is an 8 V, 500 A varistor manufactured by KEMET in the 1812 (4532 Metric) surface mount package. This component functions as a transient voltage suppressor for single-circuit applications, providing protection against voltage transients in automotive-grade applications. The part is classified as obsolete, necessitating identification of active equivalent components that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

VC1812M501R004

KEMETIn Stock: 897VC1812M501R004 Datasheet

Current PartRFQ

B72580T0040M062

EPCOS - TDK ElectronicsIn Stock: 7801B72580T0040M062 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VC1812M501R004 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for varistor voltage (8 V typical), surge current rating (500 A), maximum DC and AC voltage ratings (5.5 V and 4 V respectively), energy absorption (0.8 J), package form factor (1812 / 4532 Metric), and operating temperature range (-55°C to 125°C). Additionally, the substitute must be a single-circuit surface mount device with matching capacitance characteristics (10000 pF @ 1 kHz).

The B72580T0040M062 manufactured by EPCOS - TDK Electronics satisfies all substitution criteria through complete parameter alignment and maintains active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The B72580T0040M062 is the direct equivalent substitute for the obsolete VC1812M501R004. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The substitute part maintains active product status with EPCOS - TDK Electronics, ensuring availability for both replacement applications and new designs. The MLCV designation on the substitute indicates the multilayer ceramic varistor construction, which is functionally equivalent to the original KEMET component. Both parts carry identical electrical performance specifications and thermal operating ranges, supporting direct board-level substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the B72580T0040M062 be used as a direct replacement for the VC1812M501R004 on existing PCBs?

A: Yes. Both components share identical package dimensions (1812 / 4532 Metric), mounting type (surface mount), and all critical electrical parameters. Direct substitution on existing PCBs is supported without modification.

Q: What is the difference between the KEMET VC series and the EPCOS MLCV series?

A: Both are multilayer ceramic varistors with identical electrical specifications for this model. The series designation reflects manufacturer nomenclature only. Functional performance and electrical characteristics are equivalent.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Regulatory and environmental compliance is equivalent.

Q: Why is the original VC1812M501R004 listed as obsolete?

A: Obsolescence reflects KEMET's product lifecycle decision. The B72580T0040M062 provides continued access to equivalent functionality through an active manufacturer.

Q: Does packaging format differ between these parts?

A: The VC1812M501R004 packaging is not specified in available data. The B72580T0040M062 is supplied in Tape & Reel (TR) format. Verify packaging requirements for your procurement process.

Q: Are the surge current ratings identical?

A: Yes. Both components are rated for 500 A surge current with 0.8 J energy absorption capacity.

Q: Can these parts be used in automotive applications?

A: The VC1812M501R004 carries automotive grade designation with AEC-Q200 qualification. The B72580T0040M062 specifications do not indicate automotive qualification in the provided data. Verify automotive compliance requirements for your specific application.