TMCSB1V474MTRF Equivalent & Substitute Parts

Part Overview

The TMCSB1V474MTRF is a 0.47 µF molded tantalum capacitor manufactured by Vishay Sprague, rated for 35 V operation in a 1411 (3528 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this capacitor category.

Substiute Parts

TMCSB1V474MTRF

Vishay SpragueIn Stock: 772TMCSB1V474MTRF Datasheet

Current PartRFQ

T494B474K035AT

KEMETIn Stock: 5016T494B474K035AT Datasheet

Parametric EquivalentRFQ

TCKIV475BT

Cal-Chip Electronics, Inc.In Stock: 51055TCKIV475BT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMCSB1V474MTRF is determined by the following mandatory parameters:

• Capacitance value: 0.47 µF (exact match required)
• Voltage rating: 35 V (minimum, equal or higher acceptable)
• Package / Case: 1411 (3528 Metric) (exact match required for PCB compatibility)
• Mounting type: Surface Mount (exact match required)
• Type: Molded Tantalum (exact match required)
• Operating temperature range: -55°C ~ 125°C (minimum coverage required)

Parts meeting these criteria are classified as parametric equivalents. Tolerance variations and ESR differences within the molded tantalum capacitor specification range do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

T494B474K035AT (KEMET) is a parametric equivalent with identical capacitance (0.47 µF), voltage rating (35 V), and package (1411). This part offers improved tolerance (±10% versus ±20%) and significantly lower ESR (2.5 Ohm versus 19.8 Ohm at 100 kHz). Both parts are Active status, ROHS3 compliant, and rated for identical operating temperature ranges. Inventory availability is higher for the KEMET substitute (4959 pcs versus 735 pcs).

TCKIV475BT (Cal-Chip Electronics) does not meet substitution criteria due to capacitance mismatch (4.7 µF versus 0.47 µF). This part is not a direct equivalent for applications requiring 0.47 µF capacitance.

Frequently Asked Questions (FAQ)

Q: Can T494B474K035AT replace TMCSB1V474MTRF in all applications?

A: T494B474K035AT meets all mandatory substitution parameters: identical capacitance (0.47 µF), voltage rating (35 V), package (1411), and operating temperature range (-55°C ~ 125°C). Both are molded tantalum surface mount components with ROHS3 compliance. The KEMET part offers superior ESR performance (2.5 Ohm versus 19.8 Ohm).

Q: Why is TCKIV475BT listed as a substitute if the capacitance differs?

A: TCKIV475BT does not qualify as a substitute for the TMCSB1V474MTRF. The capacitance value (4.7 µF) does not match the required 0.47 µF specification. Capacitance is a mandatory matching parameter for tantalum capacitor substitution.

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

A: ESR (Equivalent Series Resistance) affects high-frequency performance and ripple current handling. T494B474K035AT exhibits lower ESR (2.5 Ohm) compared to TMCSB1V474MTRF (19.8 Ohm), which may provide improved performance in noise-sensitive or high-frequency applications. Both values are within acceptable ranges for molded tantalum capacitors in this voltage and capacitance class.

Q: Are all listed parts in the same physical package?

A: Yes. TMCSB1V474MTRF, T494B474K035AT, and TCKIV475BT all use the 1411 (3528 Metric) package with identical dimensions (0.138" L x 0.110" W, 4.60mm x 2.80mm) and maximum seated height (0.083", 2.10mm). PCB footprint compatibility is maintained across these parts.

Q: What compliance certifications apply to substitute parts?

A: Both TMCSB1V474MTRF and T494B474K035AT are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. MSL rating is 1 (Unlimited) for both parts, indicating no moisture sensitivity restrictions during storage or handling.