TAJD477M004RNJ Equivalent & Substitute Parts

Part Overview

The TAJD477M004RNJ is a 470 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 4 V operation in a 2917 (7343 Metric) surface mount package. This component is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and reliability certifications align with the original component's performance envelope.

Substiute Parts

TAJD477M004RNJ

KYOCERA AVXIn Stock: 1129TAJD477M004RNJ Datasheet

Current PartRFQ

293D477X0004D2TE3

Vishay SpragueIn Stock: 874293D477X0004D2TE3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TAJD477M004RNJ is determined by strict alignment of the following parameters:

• Capacitance value: 470 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 4 V (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match required)
• RoHS3 compliance status (required for regulatory alignment)
• Moisture sensitivity level: 1 (required for handling and storage compatibility)

The substitute part 293D477X0004D2TE3 (Vishay Sprague) meets all mandatory electrical and mechanical criteria. Variations in ESR (900 mOhm vs. 600 mOhm) and seated height (2.90 mm vs. 3.10 mm) remain within acceptable tolerances for general-purpose applications and do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Both the TAJD477M004RNJ and 293D477X0004D2TE3 maintain Active product status and satisfy RoHS3 and REACH compliance requirements. Selection between these parts should be based on:

• Availability and lead time requirements
• PCB layout constraints related to seated height tolerance (0.20 mm difference)
• ESR performance requirements for the specific application circuit (600 mOhm vs. 900 mOhm)
• Packaging format preference (Tape & Reel vs. Cut Tape)

Both components are suitable for direct substitution in general-purpose applications where the specified electrical and thermal parameters are met.

Frequently Asked Questions (FAQ)

Q: Can the 293D477X0004D2TE3 be used as a direct replacement for the TAJD477M004RNJ?

A: Yes. Both parts share identical capacitance (470 µF), tolerance (±20%), voltage rating (4 V), package (2917), and operating temperature range (-55°C ~ 125°C). Compliance certifications (RoHS3, REACH) and moisture sensitivity levels are equivalent.

Q: What is the significance of the ESR difference (900 mOhm vs. 600 mOhm)?

A: The 293D477X0004D2TE3 exhibits lower ESR, which reduces heat dissipation and improves high-frequency performance. For general-purpose applications, both values are acceptable. Applications with stringent ripple current or thermal constraints should evaluate ESR requirements independently.

Q: Does the seated height difference (2.90 mm vs. 3.10 mm) affect PCB compatibility?

A: The 0.20 mm height variation is within typical PCB design tolerances. Verify clearance in your specific layout, particularly for applications with height-constrained assemblies or conformal coating processes.

Q: Are there packaging format differences between these parts?

A: Yes. The TAJD477M004RNJ is supplied in Tape & Reel (TR) format, while the 293D477X0004D2TE3 is supplied in Cut Tape (CT) format. Select based on your assembly process requirements and volume needs.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both components are RoHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity). They are suitable for equivalent regulatory environments.