Littelfuse V33CH8 Equivalent & Substitute Parts

Part Overview

The Littelfuse V33CH8 is a 33 V, 100 A surface mount varistor in MLCV 2-SMD, No Lead packaging. This transient voltage suppressor is designed for single-circuit overvoltage protection applications requiring rapid response to transient events. The part is Active status and widely used in industrial and consumer electronics for surge suppression. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

V33CH8

Littelfuse Inc.In Stock: 1618V33CH8 Datasheet

Current PartRFQ

V33CH8T

Littelfuse Inc.In Stock: 2034V33CH8T Datasheet

Parametric EquivalentRFQ

B72660M0200K072

EPCOS - TDK ElectronicsIn Stock: 4910B72660M0200K072 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V33CH8 are classified based on the following critical parameters that determine functional equivalence:

Parametric Equivalents maintain identical electrical specifications: 33 V nominal varistor voltage, 100 A surge current rating, 1 J energy dissipation, single circuit configuration, and identical operating temperature range (-40°C ~ 125°C). These parts are direct functional replacements with no performance trade-offs.

Manufacturer Recommended Alternatives provide enhanced surge current capability (250 A versus 100 A) and increased energy rating (1.3 J versus 1 J) while maintaining the same 33 V varistor voltage and single-circuit design. These parts offer superior transient protection but operate within a reduced temperature range (-40°C ~ 85°C) and use different packaging (4032 Metric versus 2-SMD No Lead).

Parameter Comparison

Engineering Selection Recommendations

V33CH8T (Littelfuse Inc.) is the direct parametric equivalent and preferred substitute when inventory or supply availability of the V33CH8 is constrained. Both parts are manufactured by Littelfuse Inc., share identical electrical specifications, and are packaged in the same 2-SMD, No Lead format. Both maintain the full operating temperature range of -40°C ~ 125°C and carry equivalent compliance certifications (ROHS3, MSL 1). Selection of V33CH8T requires no circuit redesign or PCB layout modification.

B72660M0200K072 (EPCOS - TDK Electronics) is a manufacturer-recommended alternative that provides enhanced surge current handling (250 A versus 100 A) and increased energy dissipation (1.3 J versus 1 J). This part is suitable for applications requiring higher transient protection margins. However, the operating temperature range is reduced to -40°C ~ 85°C, and the package footprint differs (4032 Metric versus 2-SMD No Lead), requiring PCB layout verification and potential thermal management assessment. All three parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can V33CH8T be used as a direct replacement for V33CH8?

A: Yes. V33CH8T is a parametric equivalent with identical varistor voltage (33 V), surge current rating (100 A), energy dissipation (1 J), operating temperature range (-40°C ~ 125°C), and package format (2-SMD, No Lead). No circuit or layout modifications are required.

Q: What are the key differences between V33CH8 and B72660M0200K072?

A: The B72660M0200K072 offers higher surge current capability (250 A versus 100 A) and greater energy rating (1.3 J versus 1 J), providing enhanced transient protection. However, it operates within a narrower temperature range (-40°C ~ 85°C versus -40°C ~ 125°C) and uses a larger package footprint (4032 Metric versus 2-SMD No Lead). PCB layout compatibility must be verified before substitution.

Q: Are all three parts RoHS compliant?

A: Yes. V33CH8, V33CH8T, and B72660M0200K072 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute should be selected for high-temperature applications?

A: V33CH8 and V33CH8T both support the full operating range of -40°C ~ 125°C. B72660M0200K072 is limited to -40°C ~ 85°C and is not suitable for applications requiring operation above 85°C.

Q: Does package size affect circuit performance?

A: Package size differences between 2-SMD No Lead (V33CH8, V33CH8T) and 4032 Metric (B72660M0200K072) require PCB layout verification. Electrical performance is determined by varistor voltage, surge current rating, and energy dissipation specifications, which are comparable across all three parts for the 33 V / 100 A class.