TAJS475M006RNJ Equivalent & Substitute Parts

Part Overview

The TAJS475M006RNJ is a 4.7 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 6.3 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance performance across industrial temperature ranges. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this capacitor category.

Substiute Parts

TAJS475M006RNJ

KYOCERA AVXIn Stock: 1160TAJS475M006RNJ Datasheet

Current PartRFQ

TAJA475M006RNJ

KYOCERA AVXIn Stock: 3937TAJA475M006RNJ Datasheet

MFR RecommendedRFQ

T491A475M006AT

KEMETIn Stock: 1997T491A475M006AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TAJS475M006RNJ is determined by strict equivalence in the following parameters:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Rated voltage: 6.3 V (exact match required)
• Package type: 1206 (3216 Metric) surface mount (exact match required)
• Mounting type: Surface mount (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Variations in ESR (Equivalent Series Resistance) and physical height are permitted within the mechanical constraints of the 1206 package footprint, provided all other electrical and environmental specifications remain equivalent. The identified substitute parts meet all these criteria.

Parameter Comparison

Engineering Selection Recommendations

All three parts—TAJS475M006RNJ, TAJA475M006RNJ, and T491A475M006AT—maintain Active product status and full compliance with ROHS3 and REACH requirements. Selection between these parts should be based on:

1. Inventory availability and lead time requirements
2. ESR performance characteristics for specific circuit applications
3. Physical height constraints within the PCB assembly design (note the difference between 1.20mm and 1.80mm seated heights)
4. Manufacturer preference or qualification requirements within your supply chain

The TAJA475M006RNJ and T491A475M006AT both feature lower ESR values (6 Ohm and 5.5 Ohm respectively) compared to the main part (7.5 Ohm), which may provide performance advantages in applications sensitive to impedance characteristics. However, both substitute parts have increased seated height (1.80mm vs. 1.20mm), which must be verified against PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can TAJA475M006RNJ be used as a direct replacement for TAJS475M006RNJ?

A: Yes. Both parts are manufactured by KYOCERA AVX and share identical electrical specifications: 4.7 µF capacitance, ±20% tolerance, 6.3 V rating, and 1206 package. The primary difference is ESR (6 Ohm vs. 7.5 Ohm) and seated height (1.80mm vs. 1.20mm). Verify that the increased height does not conflict with your PCB assembly design.

Q: Is the T491A475M006AT from KEMET compatible with designs specified for TAJS475M006RNJ?

A: Yes. The T491A475M006AT meets all electrical equivalence criteria: 4.7 µF, ±20% tolerance, 6.3 V rating, and 1206 package. It features the lowest ESR (5.5 Ohm) among the three parts and is rated for 2000 hours at 125°C. The seated height is 1.80mm, matching the TAJA475M006RNJ. Confirm PCB layout compatibility before implementation.

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

A: ESR (Equivalent Series Resistance) affects impedance and ripple current handling. The TAJS475M006RNJ has 7.5 Ohm ESR, while TAJA475M006RNJ has 6 Ohm and T491A475M006AT has 5.5 Ohm. Lower ESR values reduce heat generation and improve performance in high-frequency or high-ripple-current applications. Select based on your circuit's specific requirements.

Q: Are there height restrictions when substituting these parts?

A: Yes. The TAJS475M006RNJ has a maximum seated height of 1.20mm, while both substitute parts (TAJA475M006RNJ and T491A475M006AT) have 1.80mm maximum seated height. If your PCB design has tight vertical clearance constraints, verify that the increased height is acceptable before substitution.

Q: Do all three parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 Compliant, REACH Unaffected, and classified as Active products. They share identical moisture sensitivity levels (MSL 1 - Unlimited) and operating temperature ranges (-55°C to 125°C).