TAJS156M004RNJ Equivalent & Substitute Parts

Part Overview

The TAJS156M004RNJ is a 15 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 4 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 the operating temperature range of -55°C to 125°C. Substitute parts are identified when design requirements permit higher voltage ratings, improved tolerance specifications, or when primary inventory availability is constrained.

Substiute Parts

TAJS156M004RNJ

KYOCERA AVXIn Stock: 908TAJS156M004RNJ Datasheet

Current PartRFQ

TAJS156K006RNJ

KYOCERA AVXIn Stock: 1162TAJS156K006RNJ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The TAJS156K006RNJ qualifies as a direct substitute based on the following alignment of critical parameters:

• Capacitance: Identical at 15 µF
• Package / Case: Identical 1206 (3216 Metric) surface mount configuration
• ESR: Identical at 4 Ohm
• Operating Temperature Range: Identical -55°C ~ 125°C
• Mounting Type: Identical surface mount
• RoHS & Compliance: Both ROHS3 Compliant, REACH Unaffected, EAR99 classification

The substitute part provides an upgraded voltage rating (6.3 V versus 4 V) and improved tolerance specification (±10% versus ±20%), making it suitable for applications where the original part is unavailable or where enhanced electrical margin is required within the same physical footprint.

Parameter Comparison

Engineering Selection Recommendations

Both the TAJS156M004RNJ and TAJS156K006RNJ maintain identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 classification. The substitute part TAJS156K006RNJ is electrically and mechanically compatible for direct replacement in applications designed for the original part. The higher voltage rating and tighter tolerance of the substitute provide additional design margin without compromising form factor or thermal performance. Selection between these parts depends on circuit voltage requirements and tolerance specifications rather than regulatory or environmental constraints.

Frequently Asked Questions (FAQ)

Q: Can TAJS156K006RNJ replace TAJS156M004RNJ in all applications?

A: The substitute part is compatible in applications where the circuit voltage does not exceed 4 V. The 6.3 V rating of the substitute provides margin above the original 4 V specification. Both parts share identical capacitance, package dimensions, ESR, and operating temperature range.

Q: What is the difference in tolerance between these parts?

A: The main part TAJS156M004RNJ specifies ±20% tolerance, while the substitute TAJS156K006RNJ specifies ±10% tolerance. The tighter tolerance of the substitute may be beneficial in applications with strict capacitance requirements.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 1206 (3216 Metric) package with identical dimensions of 0.126" L x 0.063" W (3.20mm x 1.60mm) and maximum seated height of 0.047" (1.20mm). They are mechanically interchangeable on PCB layouts.

Q: Do both parts have the same ESR specification?

A: Yes. Both TAJS156M004RNJ and TAJS156K006RNJ specify 4 Ohm ESR, ensuring equivalent electrical performance in high-frequency filtering and decoupling applications.

Q: Are there any compliance or environmental differences?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and classified as EAR99. Both have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements.