F971V474MBA Equivalent & Substitute Parts

Part Overview

The F971V474MBA is a 0.47 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 35 V operation. This component is designed for surface mount applications in the 1411 (3528 Metric) package format. The part is currently in active production status with 2150 units available in stock. Tantalum capacitors of this specification are essential in applications requiring stable capacitance, low ESR, and reliable performance across extended temperature ranges. Alternative components may be required due to supply constraints, lead time considerations, or specific application requirements for different ESR characteristics or moisture sensitivity levels.

Substiute Parts

F971V474MBA

KYOCERA AVXIn Stock: 2235F971V474MBA Datasheet

Current PartRFQ

T491B474M035AT

KEMETIn Stock: 4949T491B474M035AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F971V474MBA is determined by strict alignment with the following core parameters:

• Capacitance Value: 0.47 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 35 V (exact match required)
• Package / Case: 1411 (3528 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Type: Molded Tantalum (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The substitute part T491B474M035AT meets all mandatory substitution criteria. Variations in ESR (Equivalent Series Resistance), moisture sensitivity level (MSL), and physical height are permitted within the constraints of the 1411 package specification, as these parameters do not affect functional interchangeability for standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the F971V474MBA and T491B474M035AT are active production components with full ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory compliance in automotive and industrial environments.

The F971V474MBA features a lower ESR specification of 5 Ohm, which may be advantageous in applications sensitive to impedance characteristics or requiring minimal voltage ripple. The component carries an AEC-Q200 automotive qualification rating.

The T491B474M035AT offers superior moisture handling with MSL 1 (Unlimited) rating compared to MSL 3 (168 Hours), providing extended shelf life and reduced sensitivity to humidity exposure during storage and handling. The slightly lower seated height (2.10mm versus 2.30mm) may provide marginal benefits in space-constrained designs, though both components fit within the 1411 package specification.

Selection between these components should be based on specific application requirements regarding ESR performance, moisture sensitivity tolerance, and supply availability.

Frequently Asked Questions (FAQ)

Q: Can T491B474M035AT be used as a direct replacement for F971V474MBA?

A: Yes. Both components share identical capacitance (0.47 µF), tolerance (±20%), voltage rating (35 V), package format (1411 / 3528 Metric), mounting type (Surface Mount), and operating temperature range (-55°C ~ 125°C). Both are ROHS3 compliant and REACH unaffected.

Q: What is the difference in ESR between these two parts?

A: The F971V474MBA has an ESR of 5 Ohm, while the T491B474M035AT has an ESR of 8 Ohm. For most general-purpose applications, this 3 Ohm difference is not functionally significant. Applications with strict ESR requirements should specify the F971V474MBA.

Q: How do the moisture sensitivity levels differ?

A: The F971V474MBA carries MSL 3 (168 Hours), indicating moisture sensitivity with a 168-hour floor life after bag opening. The T491B474M035AT carries MSL 1 (Unlimited), meaning it has no moisture sensitivity restrictions. For applications with extended storage or humid environments, the T491B474M035AT offers superior reliability.

Q: Are there physical compatibility concerns between these parts?

A: Both components have identical footprint dimensions (0.138" L x 0.110" W / 4.60mm x 2.80mm). The T491B474M035AT has a slightly lower seated height (2.10mm versus 2.30mm), which is compatible with all PCB designs accommodating the 1411 package specification.

Q: Do both parts meet automotive qualification standards?

A: The F971V474MBA carries AEC-Q200 automotive qualification. The T491B474M035AT is designated for general purpose applications. For automotive-specific requirements, the F971V474MBA is the specified component.