TAJS156K010RNJ Equivalent & Substitute Parts

Part Overview

The TAJS156K010RNJ is a 15 µF molded tantalum capacitor rated at 10 V in a 1206 (3216 Metric) surface mount package, manufactured by KYOCERA AVX. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same capacitance, voltage rating, tolerance, package size, and operating temperature range. Alternative sources may be required due to inventory availability, lead time considerations, or specific ESR (Equivalent Series Resistance) requirements for particular circuit applications.

Key Parameters

Parameter	Value
Capacitance	15 µF
Voltage - Rated	10 V
Tolerance	±10%
Type	Molded Tantalum
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TAJS156K010RNJ are qualified based on strict electrical and mechanical equivalence. All substitute parts maintain identical specifications for capacitance (15 µF), voltage rating (10 V), tolerance (±10%), package size (1206 / 3216 Metric), mounting type (Surface Mount), operating temperature range (-55°C ~ 125°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99). The primary variable among qualified substitutes is Equivalent Series Resistance (ESR), which ranges from 1 Ohm to 6 Ohm depending on the manufacturer and series. All substitute parts are classified as Active product status. Substitution is valid when the application circuit design accommodates the ESR specification of the selected alternative part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	ESR	Package	Height (Max)	Product Status	RoHS Status
TAJS156K010RNJ	KYOCERA AVX	TAJ	15 µF	10 V	±10%	2 Ohm @ 100kHz	1206 (3216 Metric)	0.047" (1.20mm)	Active	ROHS3 Compliant
TAJA156K010RNJ	KYOCERA AVX	TAJ	15 µF	10 V	±10%	3.2 Ohm	1206 (3216 Metric)	0.071" (1.80mm)	Active	ROHS3 Compliant
TPSA156K010R1000	KYOCERA AVX	TPS	15 µF	10 V	±10%	1 Ohm	1206 (3216 Metric)	0.071" (1.80mm)	Active	ROHS3 Compliant
293D156X9010A2TE3	Vishay Sprague	293D	15 µF	10 V	±10%	2.9 Ohm	1206 (3216 Metric)	0.071" (1.80mm)	Active	ROHS3 Compliant
T491A156K010AT	KEMET	T491	15 µF	10 V	±10%	6 Ohm	1206 (3216 Metric)	0.071" (1.80mm)	Active	ROHS3 Compliant
TR3A156K010C1000	Vishay Sprague	TR3	15 µF	10 V	±10%	1 Ohm	1206 (3216 Metric)	0.071" (1.80mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are Active product status and ROHS3 compliant, meeting current regulatory requirements. Selection among qualified substitutes should be based on ESR requirements specific to the circuit application. The TPSA156K010R1000 and TR3A156K010C1000 offer the lowest ESR at 1 Ohm, suitable for applications requiring minimal impedance. The TAJS156K010RNJ (original part) and 293D156X9010A2TE3 provide mid-range ESR values of 2 Ohm and 2.9 Ohm respectively. The T491A156K010AT carries the highest ESR at 6 Ohm and includes a specified lifetime rating of 2000 Hrs @ 125°C. Physical height differences exist between the original part (0.047" maximum) and substitute alternatives (0.071" maximum), which must be evaluated for PCB layout and clearance constraints. All parts maintain identical operating temperature range (-55°C ~ 125°C) and moisture sensitivity classification (MSL 1 - Unlimited).

Frequently Asked Questions (FAQ)

Q: Can TAJS156K010RNJ be directly replaced with any of the listed substitutes?

A: Direct replacement is valid when the circuit design accommodates the ESR specification of the substitute part. All listed substitutes maintain identical capacitance (15 µF), voltage rating (10 V), tolerance (±10%), package size (1206), and operating temperature range (-55°C ~ 125°C). Physical height differences must be verified against PCB layout constraints.

Q: What is the significance of ESR differences among substitute parts?

A: Equivalent Series Resistance (ESR) affects circuit performance, particularly in high-frequency applications and ripple current handling. The TAJS156K010RNJ specifies 2 Ohm @ 100kHz. Substitutes range from 1 Ohm (TPSA156K010R1000, TR3A156K010C1000) to 6 Ohm (T491A156K010AT). Lower ESR values reduce impedance and heat generation; higher ESR values may impact circuit stability in sensitive applications.

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

A: The original TAJS156K010RNJ is supplied in Tape & Reel (TR) packaging. Substitute TAJA156K010RNJ is available in Cut Tape (CT) & Digi-Reel® packaging. TPSA156K010R1000 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Vishay Sprague parts (293D156X9010A2TE3, TR3A156K010C1000) and KEMET T491A156K010AT are supplied in Tape & Reel (TR) packaging. Packaging selection does not affect electrical or mechanical compatibility.

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

A: All listed parts are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the height constraint consideration for PCB design?

A: The original TAJS156K010RNJ has a maximum seated height of 0.047" (1.20mm). All substitute parts have a maximum seated height of 0.071" (1.80mm), representing a 0.024" (0.60mm) increase. This difference must be evaluated for applications with tight vertical clearance requirements or automated assembly constraints.

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