TAJC475M020SNJ Equivalent & Substitute Parts

Part Overview

The TAJC475M020SNJ is a 4.7 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 20 V operation in a 2312 (6032 Metric) surface mount package. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance in compact form factors. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or specific performance characteristics such as ESR (Equivalent Series Resistance) specifications.

Substiute Parts

TAJC475M020SNJ

KYOCERA AVXIn Stock: 731TAJC475M020SNJ Datasheet

Current PartRFQ

293D475X0020C2TE3

Vishay SpragueIn Stock: 2862293D475X0020C2TE3 Datasheet

MFR RecommendedRFQ

T491C475M020AT

KEMETIn Stock: 1247T491C475M020AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TAJC475M020SNJ are qualified based on the following critical parameters that must match or exceed the main part specifications:

• Capacitance: 4.7 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage - Rated: 20 V (minimum requirement; higher voltage ratings are acceptable)
• Package / Case: 2312 (6032 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)
• Type: Molded Tantalum (exact match required)
• RoHS Status: ROHS3 Compliant (compliance requirement)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

The identified substitute parts meet all mandatory electrical and mechanical parameters. ESR (Equivalent Series Resistance) values are provided where available and represent performance characteristics that may influence circuit behavior in high-frequency or low-impedance applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory conformance. The 293D475X0020C2TE3 (Vishay Sprague) and T491C475M020AT (KEMET) are direct functional equivalents with identical electrical ratings and package dimensions.

Selection between substitute parts should be based on:

• Inventory availability: The 293D475X0020C2TE3 offers 2800 units in stock, compared to 1185 units for the T491C475M020AT.
• ESR characteristics: Both substitutes specify ESR values (2.3 Ohm and 2.4 Ohm respectively), which may be relevant for applications sensitive to impedance characteristics.
• Lifetime rating: The T491C475M020AT provides a specified lifetime rating of 2000 hours at 125°C, whereas the other parts do not specify this parameter.
• Manufacturer preference: Component selection may be constrained by existing supply chain relationships or qualification requirements specific to individual manufacturers.

Frequently Asked Questions (FAQ)

Q: Can the 293D475X0020C2TE3 or T491C475M020AT be used as direct replacements for the TAJC475M020SNJ?

A: Yes. Both substitute parts match the critical electrical parameters (4.7 µF capacitance, ±20% tolerance, 20 V rating) and mechanical specifications (2312 package, surface mount, identical dimensions). All three parts operate across the same temperature range (-55°C ~ 125°C) and meet ROHS3 compliance requirements.

Q: What is the significance of ESR values in the substitute parts?

A: ESR (Equivalent Series Resistance) affects the impedance characteristics of the capacitor at high frequencies. The 293D475X0020C2TE3 specifies 2.3 Ohm ESR and the T491C475M020AT specifies 2.4 Ohm ESR. These values are comparable and suitable for general purpose applications. Applications requiring specific ESR performance should reference the original design specifications.

Q: Are there any dimensional differences between the main part and substitutes?

A: Dimensional differences are negligible. The main part (TAJC475M020SNJ) and T491C475M020AT both specify a maximum seated height of 0.110" (2.80mm). The 293D475X0020C2TE3 specifies 0.110" (2.79mm), a difference of 0.01mm that does not affect PCB assembly compatibility. All three parts share identical length and width dimensions (0.236" L x 0.126" W / 6.00mm x 3.20mm).

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. The TAJC475M020SNJ, 293D475X0020C2TE3, and T491C475M020AT all carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.

Q: Which substitute part should be selected for long-term reliability applications?

A: The T491C475M020AT provides a specified lifetime rating of 2000 hours at 125°C, offering documented reliability data for extended temperature operation. The other parts do not specify lifetime ratings. For applications requiring documented long-term performance data, the T491C475M020AT is the appropriate selection.