F971C335MBA Equivalent & Substitute Parts

Part Overview

The F971C335MBA is a 3.3 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 16 V operation in a 1411 (3528 Metric) surface mount package. This component is classified as Active product status and is designed for applications requiring high reliability in automotive environments. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are maintained across the specified parameter range.

Substiute Parts

F971C335MBA

KYOCERA AVXIn Stock: 2031F971C335MBA Datasheet

Current PartRFQ

T491B335M016AT

KEMETIn Stock: 5397T491B335M016AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F971C335MBA is determined by strict equivalence across the following parameters:

• Capacitance value: 3.3 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 16 V (exact match required)
• Package type: 1411 (3528 Metric) surface mount (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

The identified substitute part T491B335M016AT meets all mandatory substitution criteria. Variations in secondary parameters such as ESR (Equivalent Series Resistance) and MSL (Moisture Sensitivity Level) do not disqualify substitution when primary electrical and mechanical specifications are equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the F971C335MBA and T491B335M016AT are Active product status components with ROHS3 compliance and REACH Unaffected status. The F971C335MBA carries AEC-Q200 automotive qualification and high reliability features. The T491B335M016AT is rated for general purpose applications with specified lifetime of 2000 hours at 125°C. Selection between these parts should be based on application-specific requirements for automotive qualification and reliability ratings, as well as inventory availability and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can T491B335M016AT replace F971C335MBA in all applications?

A: Both parts meet equivalent electrical specifications (3.3 µF, ±20%, 16 V) and are housed in identical 1411 (3528 Metric) packages. However, the F971C335MBA carries AEC-Q200 automotive qualification, while T491B335M016AT is rated for general purpose use. Application requirements for automotive qualification must be evaluated before substitution.

Q: What is the difference in height between these parts?

A: The F971C335MBA has a maximum seated height of 0.091" (2.30mm), while the T491B335M016AT measures 0.083" (2.10mm). Both dimensions are within typical PCB assembly tolerances for 1411 package devices.

Q: Are there differences in ESR that affect circuit performance?

A: The F971C335MBA specifies 3.1 Ohm ESR, while T491B335M016AT specifies 4.6 Ohm ESR. Both values are within acceptable ranges for 3.3 µF tantalum capacitors at 16 V rating. Circuit-specific ripple current and frequency response requirements should be evaluated for critical applications.

Q: What is the moisture sensitivity difference?

A: The F971C335MBA is rated MSL 3 (168 hours), while T491B335M016AT is rated MSL 1 (Unlimited). MSL 1 indicates superior moisture resistance and reduced baking requirements during assembly. This represents an improvement in handling and storage conditions.

Q: Are both parts available in Tape & Reel packaging?

A: Yes, both F971C335MBA and T491B335M016AT are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.