F971V474MAAHT3 Equivalent & Substitute Parts

Part Overview

The F971V474MAAHT3 is a 0.47 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 35 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is designed for applications requiring high reliability and automotive-grade performance. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are maintained across the specified parameter range, enabling procurement flexibility and supply chain continuity.

Substiute Parts

F971V474MAAHT3

KYOCERA AVXIn Stock: 1141F971V474MAAHT3 Datasheet

Current PartRFQ

T491A474M035AT

KEMETIn Stock: 29793T491A474M035AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F971V474MAAHT3 is determined by strict equivalence across the following critical parameters:

• Capacitance value: 0.47 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 35 V (exact match required)
• Package type: 1206 (3216 Metric) surface mount (exact match required)
• Physical dimensions: 0.126" L x 0.063" W, height ≤ 0.071" (exact match required)
• Molded tantalum construction (exact match required)
• RoHS3 compliance (required for regulatory alignment)

The substitute part T491A474M035AT meets all these criteria, enabling direct functional replacement in applications where the F971V474MAAHT3 is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the F971V474MAAHT3 and T491A474M035AT are Active product status components with ROHS3 compliance, meeting current regulatory requirements. The F971V474MAAHT3 carries automotive and high reliability ratings, while the T491A474M035AT is classified for general purpose applications. Selection between these parts should be based on application-specific requirements regarding operating temperature range and moisture sensitivity handling. The F971V474MAAHT3 supports operation to 135°C with 2000-hour lifetime rating at that temperature, whereas the T491A474M035AT operates to 125°C with 2000-hour lifetime at that lower temperature. The T491A474M035AT offers superior moisture resistance with MSL 1 (Unlimited) compared to MSL 3 (168 Hours) for the F971V474MAAHT3.

Frequently Asked Questions (FAQ)

Q: Can T491A474M035AT replace F971V474MAAHT3 in all applications?

A: Direct substitution is valid when the application does not require the extended temperature operation to 135°C or automotive-grade reliability certification. Both parts maintain identical capacitance, voltage rating, tolerance, and physical package dimensions.

Q: What is the significance of the different ESR values (10 Ohm vs. 12 Ohm)?

A: ESR (Equivalent Series Resistance) affects high-frequency performance and ripple current handling. The F971V474MAAHT3 has lower ESR at 10 Ohm compared to the T491A474M035AT at 12 Ohm. Applications sensitive to ESR characteristics should evaluate this parameter against circuit requirements.

Q: How do the operating temperature ranges differ?

A: The F971V474MAAHT3 operates from -55°C to 135°C with 2000-hour lifetime at 135°C. The T491A474M035AT operates from -55°C to 125°C with 2000-hour lifetime at 125°C. Applications requiring sustained operation above 125°C must use the F971V474MAAHT3.

Q: What does Moisture Sensitivity Level (MSL) mean for component handling?

A: MSL indicates moisture absorption limits and shelf life after packaging opening. F971V474MAAHT3 has MSL 3 (168 hours), requiring controlled storage conditions. T491A474M035AT has MSL 1 (Unlimited), allowing indefinite shelf life without special moisture control.

Q: Are both parts suitable for automotive applications?

A: The F971V474MAAHT3 carries automotive and high reliability ratings. The T491A474M035AT is classified for general purpose use. Automotive applications should verify that general purpose classification meets specific design and qualification requirements.

Q: Do both parts have identical physical dimensions for PCB layout?

A: Yes. Both components use the 1206 (3216 Metric) package with identical dimensions: 0.126" L x 0.063" W (3.20mm x 1.60mm) and maximum seated height of 0.071" (1.80mm). PCB footprints are interchangeable.