F310J476MBA Equivalent & Substitute Parts

Part Overview

The F310J476MBA is a 47 µF molded tantalum polymer capacitor rated at 6.3 V with an ESR of 70 mOhm @ 100 kHz, manufactured by Nichicon in the 1411 (3528 Metric) package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct board-level replacement without design modification.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	6.3 V
ESR @ 100 kHz	70 mOhm
Package / Case	1411 (3528 Metric)
Type	Molded Tantalum Polymer
Tolerance	±20%
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance (47 µF), voltage rating (6.3 V), ESR specification (70 mOhm @ 100 kHz), package designation (1411 / 3528 Metric), and operating temperature range (-55°C ~ 105°C minimum). Parts meeting all these criteria are classified as direct equivalents. Parts with variations in ESR, package height, or operating temperature range are classified as similar substitutes with noted deviations.

Direct Equivalents (identical electrical and mechanical specifications):

6TPC47MB (Panasonic)
T520T476M006ATE070 (KEMET)
T55T476M6R3C0070 (Vishay Sprague)

Similar Substitute (ESR deviation):

T520B476M006ATE025 (KEMET) — 25 mOhm ESR instead of 70 mOhm

Package Variant (1210 case instead of 1411):

TCJB476M006R0070 (KYOCERA AVX) — 1210 package, extended temperature to 125°C

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Package	Height (Max)	Temp Range	Product Status
F310J476MBA	Nichicon	47 µF	6.3 V	70 mOhm	1411	0.047" (1.20 mm)	-55°C ~ 105°C	Obsolete
6TPC47MB	Panasonic	47 µF	6.3 V	70 mOhm	1411	0.047" (1.20 mm)	-55°C ~ 105°C	Last Time Buy
T520T476M006ATE070	KEMET	47 µF	6.3 V	70 mOhm	1411	0.047" (1.20 mm)	-55°C ~ 105°C	Active
T55T476M6R3C0070	Vishay Sprague	47 µF	6.3 V	70 mOhm	1411	0.047" (1.20 mm)	-55°C ~ 105°C	Active
TCJB476M006R0070	KYOCERA AVX	47 µF	6.3 V	70 mOhm	1210	0.083" (2.10 mm)	-55°C ~ 125°C	Active
T520B476M006ATE025	KEMET	47 µF	6.3 V	25 mOhm	1411	0.079" (2.00 mm)	-55°C ~ 105°C	Active

Engineering Selection Recommendations

For direct replacement of F310J476MBA in existing designs, select from the active-status direct equivalents: T520T476M006ATE070 (KEMET) or T55T476M6R3C0070 (Vishay Sprague). Both parts maintain identical electrical performance and package dimensions, ensuring PCB compatibility without layout modification. KEMET T520T476M006ATE070 offers the advantage of active product status with established supply chain availability.

The Panasonic 6TPC47MB provides electrical equivalence but carries Last Time Buy status, limiting long-term availability for production quantities.

TCJB476M006R0070 (KYOCERA AVX) is suitable only if the increased package height (0.083" vs. 0.047") and extended operating temperature range (-55°C ~ 125°C) align with design requirements. This part requires PCB layout verification due to dimensional differences.

T520B476M006ATE025 (KEMET) is not recommended as a direct substitute due to significantly lower ESR (25 mOhm vs. 70 mOhm), which alters circuit performance characteristics and may affect filtering, stability, or thermal behavior in the target application.

All recommended substitutes carry RoHS3 compliance and REACH Unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can T520B476M006ATE025 replace F310J476MBA? A: No. While both are 47 µF / 6.3 V tantalum polymer capacitors in the 1411 package, the ESR differs significantly (25 mOhm vs. 70 mOhm). Lower ESR changes circuit impedance characteristics and may alter filtering performance or thermal response. Use only if the design specifically requires lower ESR.

Q: Is TCJB476M006R0070 a direct substitute? A: No. Although electrically equivalent, TCJB476M006R0070 uses the 1210 package instead of 1411, resulting in 0.036" greater height (2.10 mm vs. 1.20 mm). PCB layout verification is required to confirm clearance. This part is suitable only if mechanical space permits.

Q: What is the difference between Cut Tape and Tape & Reel packaging? A: Both are surface-mount compatible formats. Cut Tape (CT) & Digi-Reel® is suitable for lower-volume or prototype applications. Tape & Reel (TR) is optimized for high-volume automated assembly. Electrical performance is identical; selection depends on production volume and assembly equipment.

Q: Why is F310J476MBA obsolete? A: Nichicon has discontinued the F31 series. Active alternatives from KEMET, Vishay Sprague, and Panasonic provide equivalent performance with ongoing manufacturing support.

Q: Are all substitutes RoHS3 compliant? A: Yes. All recommended direct equivalents and the KYOCERA AVX variant carry RoHS3 Compliant status. T520B476M006ATE025 also meets RoHS3 requirements.

Q: What is Moisture Sensitivity Level (MSL)? A: MSL indicates the maximum time a component can be exposed to moisture before soldering. F310J476MBA carries MSL 1 (unlimited exposure). Direct equivalents carry MSL 3 (168 hours maximum), requiring controlled storage and handling procedures during assembly.

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