F971C226MBA Equivalent & Substitute Parts

Part Overview

The F971C226MBA is a 22 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 16 V operation in a 1411 (3528 Metric) surface mount package. This component is designed for applications requiring compact, high-reliability capacitive storage with automotive-grade performance. The part is currently in active production status with 3018 units available in inventory.

Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are maintained across the same package footprint and rated specifications, enabling seamless integration into existing designs without circuit modification.

Substiute Parts

F971C226MBA

KYOCERA AVXIn Stock: 3057F971C226MBA Datasheet

Current PartRFQ

T491B226M016AT

KEMETIn Stock: 35215T491B226M016AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F971C226MBA is determined by strict adherence to the following parameters:

• Capacitance Value: Must be 22 µF
• Tolerance: Must be ±20%
• Voltage Rating: Must be 16 V or higher
• Package / Case: Must be 1411 (3528 Metric)
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must support -55°C ~ 125°C
• Compliance: Must maintain ROHS3 compliance and REACH Unaffected status

The T491B226M016AT from KEMET meets all substitution criteria, maintaining identical electrical ratings and mechanical compatibility within the specified package envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the F971C226MBA and T491B226M016AT are active production components with full ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements for industrial and automotive applications. The primary distinction between these parts is the ESR specification: the F971C226MBA exhibits 1.9 Ohm ESR while the T491B226M016AT exhibits 2.2 Ohm ESR. Both values remain within acceptable operating parameters for 22 µF, 16 V tantalum capacitor applications.

The T491B226M016AT offers a lower moisture sensitivity level (MSL 1 vs. MSL 3), providing extended shelf life and reduced handling constraints during manufacturing and storage. The KEMET substitute maintains identical footprint compatibility and electrical ratings, enabling direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the T491B226M016AT replace the F971C226MBA in existing designs?

A: Yes. Both components share identical capacitance (22 µF), tolerance (±20%), voltage rating (16 V), package footprint (1411 / 3528 Metric), and operating temperature range (-55°C ~ 125°C). The ESR difference (1.9 Ohm vs. 2.2 Ohm) is within acceptable variation for general-purpose tantalum capacitor applications.

Q: What is the significance of the ESR difference between these parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. The F971C226MBA at 1.9 Ohm provides marginally lower impedance than the T491B226M016AT at 2.2 Ohm. For most applications, this 0.3 Ohm difference is negligible; however, high-frequency or high-ripple-current circuits should be evaluated against specific design requirements.

Q: Are there packaging differences between these substitutes?

A: The F971C226MBA is supplied in Tape & Reel (TR) packaging, while the T491B226M016AT is supplied in Cut Tape (CT) & Digi-Reel® packaging. Both are surface mount compatible with identical footprints. Packaging selection depends on assembly process requirements and volume considerations.

Q: What does MSL rating mean for these capacitors?

A: Moisture Sensitivity Level (MSL) indicates the component's sensitivity to moisture absorption during storage and handling. The F971C226MBA is rated MSL 3 (168 Hours), while the T491B226M016AT is rated MSL 1 (Unlimited). Lower MSL ratings provide extended shelf life and reduced risk of moisture-related failures during manufacturing.

Q: Are both parts suitable for automotive applications?

A: The F971C226MBA carries automotive qualification (AEC-Q200) and high-reliability features. The T491B226M016AT is classified as general-purpose. For automotive-specific requirements, the F971C226MBA is the designated choice; however, the T491B226M016AT remains compliant with ROHS3 and REACH standards for general industrial use.