Equivalent & Substitute Parts for F310G476MBA

Part Overview

The F310G476MBA is a 47 µF molded tantalum polymer capacitor rated at 4 V, manufactured by Nichicon in the 1411 (3528 Metric) package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. Substitute parts must maintain identical electrical performance and mechanical compatibility to ensure direct replacement capability in surface mount applications.

Substiute Parts

F310G476MBA

NichiconIn Stock: 871F310G476MBA Datasheet

Current PartRFQ

T520T476M004ATE070

KEMETIn Stock: 1046T520T476M004ATE070 Datasheet

DirectRFQ

T55T476M004C0070

Vishay SpragueIn Stock: 1066T55T476M004C0070 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F310G476MBA is determined by strict equivalence across the following parameters:

• Capacitance value: 47 µF (exact match required)
• Voltage rating: 4 V (exact match required)
• ESR specification: 70 mOhm @ 100 kHz (exact match required)
• Package / Case: 1411 (3528 Metric) (exact match required)
• Type: Molded Tantalum Polymer (exact match required)
• Tolerance: ±20% (exact match required)
• Operating temperature range: -55°C to 105°C (exact match required)

Two active substitute parts meet all substitution criteria and are qualified for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

Both T520T476M004ATE070 (KEMET) and T55T476M004C0070 (Vishay Sprague) are active products with full electrical and mechanical equivalence to the obsolete F310G476MBA. Selection between these two substitutes should be based on:

• Availability and lead time from component distributors
• RoHS3 compliance certification status (both parts are ROHS3 compliant)
• Moisture sensitivity level requirements (KEMET T520 series: MSL 3 at 168 hours; Vishay T55 series: MSL 3 at 168 hours)
• Packaging format preference (both available in Tape & Reel format)
• Supplier qualification and quality agreements

Both substitutes are REACH unaffected and classified under ECCN EAR99 with HTSUS code 8532.21.0050, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can T520T476M004ATE070 or T55T476M004C0070 be used as direct replacements for F310G476MBA?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical capacitance (47 µF), voltage rating (4 V), ESR (70 mOhm @ 100 kHz), package (1411 / 3528 Metric), and operating temperature range (-55°C to 105°C). PCB layout and assembly processes require no modification.

Q: What is the difference in physical dimensions between the original and substitute parts?

A: The original F310G476MBA measures 0.134" L x 0.110" W (3.40mm x 2.80mm). Both substitutes measure 0.138" L x 0.110" W (4.60mm x 2.80mm). The length difference of 0.004" (0.10mm) is within typical PCB pad tolerance and does not affect assembly compatibility.

Q: Are there any moisture sensitivity differences between the substitutes?

A: Both substitute parts are classified as MSL 3 (168 hours). The original F310G476MBA is MSL 1 (unlimited). MSL 3 components require controlled storage and handling procedures. Verify that your manufacturing environment and supply chain can accommodate MSL 3 requirements.

Q: Do both substitutes meet RoHS compliance?

A: Yes. Both T520T476M004ATE070 and T55T476M004C0070 are ROHS3 compliant. The original F310G476MBA does not specify RoHS status.

Q: Which substitute should be selected for new designs?

A: Both parts are qualified equivalents. Selection should be based on component availability, supplier relationships, and manufacturing process compatibility. Consult with your component distributor for current stock levels and lead times.