F971V105MBAHT3 Equivalent & Substitute Parts

Part Overview

The F971V105MBAHT3 is a 1 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 maintains active product status and is suitable for automotive and high-reliability applications requiring stable capacitance performance across extended temperature ranges. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

F971V105MBAHT3

KYOCERA AVXIn Stock: 2906F971V105MBAHT3 Datasheet

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T494B105M035AT

KEMETIn Stock: 2788T494B105M035AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F971V105MBAHT3 is determined by the following critical parameters:

• Capacitance Value: 1 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)
• Physical Dimensions: 0.138" L x 0.110" W, Height 0.083" max (exact match required)

The substitute part T494B105M035AT meets all critical substitution criteria. Variations in secondary parameters such as ESR, operating temperature range, and moisture sensitivity level do not preclude substitution when the primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both the F971V105MBAHT3 and T494B105M035AT are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use.

The F971V105MBAHT3 is rated for operation to 135°C with 2000-hour lifetime at that temperature, providing extended thermal performance suitable for automotive and high-reliability applications. The T494B105M035AT operates to 125°C with equivalent 2000-hour lifetime at its rated temperature. The T494B105M035AT exhibits lower ESR (2 Ohm versus 4 Ohm), which may provide performance advantages in applications sensitive to impedance characteristics.

Selection between these parts should be based on specific application requirements regarding maximum operating temperature and ESR performance. Both parts are mechanically and electrically interchangeable within the stated parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can T494B105M035AT replace F971V105MBAHT3 in all applications?

A: Yes, provided the application does not require operation above 125°C. Both parts share identical capacitance, voltage rating, tolerance, package dimensions, and mounting type. The T494B105M035AT has lower ESR, which is generally beneficial for circuit performance.

Q: What is the significance of the different ESR values?

A: ESR (Equivalent Series Resistance) affects impedance and power dissipation characteristics. The T494B105M035AT's 2 Ohm ESR is lower than the F971V105MBAHT3's 4 Ohm ESR. Lower ESR typically results in reduced heat generation and improved high-frequency performance, but both values are within acceptable ranges for standard tantalum capacitor applications.

Q: Are there differences in moisture sensitivity between these parts?

A: Yes. The F971V105MBAHT3 has MSL 3 (168-hour floor life), while the T494B105M035AT has MSL 1 (unlimited floor life). MSL 1 indicates superior moisture resistance and longer shelf life without baking requirements. This favors the T494B105M035AT for inventory management and extended storage scenarios.

Q: Do both parts meet automotive qualification standards?

A: The F971V105MBAHT3 carries AEC-Q200 automotive qualification. The T494B105M035AT is designated for general purpose applications. For applications requiring explicit automotive qualification, the F971V105MBAHT3 is the specified choice.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 1411 (3528 Metric) package with identical length (0.138"), width (0.110"), and maximum seated height (0.083"). They are mechanically interchangeable on PCB layouts.