TAJS475K016A Equivalent & Substitute Parts

Part Overview

The TAJS475K016A is a 4.7 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 16 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package size, mounting type, height constraints). Alternative sources and packaging formats are available to support procurement flexibility, inventory availability, and application-specific requirements.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage Rating	16 V
Tolerance	±10%
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Type	Molded Tantalum
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance value (4.7 µF), voltage rating (16 V), tolerance (±10%), package designation (1206 / 3216 Metric), and surface mount mounting type. All identified substitute parts meet these core electrical and mechanical requirements. Variations in ESR (Equivalent Series Resistance), height-seated maximum, and packaging format (Cut Tape, Tape & Reel, Digi-Reel) do not disqualify substitution but may influence selection based on application performance requirements and procurement constraints. All substitute parts maintain ROHS3 compliance, MSL 1 rating, and the specified operating temperature range.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Tolerance	ESR (Ohm)	Height - Seated Max (mm)	Packaging	Product Status
TAJS475K016A	KYOCERA AVX	TAJ	4.7 µF	16 V	±10%	4.5	1.20	Bulk	Active
TAJS475K016RNJ	KYOCERA AVX	TAJ	4.7 µF	16 V	±10%	4.5	1.20	Tape & Reel (TR)	Active
TAJA475K016RNJ	KYOCERA AVX	TAJ	4.7 µF	16 V	±10%	4.0	1.80	Cut Tape (CT) & Digi-Reel®	Active
TPSA475K016R2000	KYOCERA AVX	TPS	4.7 µF	16 V	±10%	2.0	1.80	Tape & Reel (TR)	Active
293D475X9016A2TE3	Vishay Sprague	TANTAMOUNT™, 293D	4.7 µF	16 V	±10%	5.0	1.80	Cut Tape (CT) & Digi-Reel®	Active
593D475X9016A2TE3	Vishay Sprague	TANTAMOUNT™, 593D	4.7 µF	16 V	±10%	2.5	1.80	Tape & Reel (TR)	Active
T491A475K016AT	KEMET	T491	4.7 µF	16 V	±10%	4.0	1.80	Cut Tape (CT) & Digi-Reel®	Active
T494A475K016AT	KEMET	T494	4.7 µF	16 V	±10%	3.0	1.80	Tape & Reel (TR)	Active
TR3A475K016C1500	Vishay Sprague	TANTAMOUNT™, TR3	4.7 µF	16 V	±10%	1.5	1.80	Tape & Reel (TR)	Active
TR3A475K016C2000	Vishay Sprague	TANTAMOUNT™, TR3	4.7 µF	16 V	±10%	2.0	1.80	Tape & Reel (TR)	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original TAJS475K016A. Selection among substitutes should account for the following factors based on provided specifications:

ESR variation ranges from 1.5 Ohm to 5.0 Ohm across the substitute population. Lower ESR values (TR3A475K016C1500 at 1.5 Ohm, TPSA475K016R2000 at 2.0 Ohm) support applications requiring reduced impedance and improved transient response. Higher ESR values (293D475X9016A2TE3 at 5.0 Ohm) remain within acceptable operating parameters for general-purpose applications.

Height-seated maximum dimensions differ between the original part (1.20 mm) and most substitutes (1.80 mm). PCB layout constraints and component stacking requirements must be evaluated to confirm mechanical fit.

Packaging format availability spans Cut Tape, Tape & Reel, and Digi-Reel options. Procurement volume, assembly automation compatibility, and inventory management practices should guide packaging selection.

All parts share identical operating temperature range (-55°C to 125°C), MSL 1 rating, and REACH unaffected status, confirming environmental and supply chain compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can TAJS475K016RNJ replace TAJS475K016A directly?

A: Yes. Both parts are KYOCERA AVX TAJ series components with identical electrical specifications (4.7 µF, 16 V, ±10%, 4.5 Ohm ESR). The primary difference is packaging format: TAJS475K016RNJ is supplied in Tape & Reel format, while TAJS475K016A is supplied in bulk. Electrical performance and mechanical fit are equivalent.

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

A: ESR (Equivalent Series Resistance) affects impedance characteristics and thermal performance under AC ripple current conditions. Lower ESR values (1.5–2.0 Ohm) reduce voltage ripple and heat generation, beneficial for noise-sensitive or high-frequency applications. Higher ESR values (4.0–5.0 Ohm) remain suitable for general-purpose DC filtering. Application circuit requirements determine optimal ESR selection.

Q: Are height differences between TAJS475K016A (1.20 mm) and substitute parts (1.80 mm) a compatibility issue?

A: Height difference must be evaluated against PCB layout constraints, component clearance requirements, and assembly process specifications. A 0.60 mm increase in seated height may affect board-level stacking, enclosure fit, or automated placement tolerances. Mechanical verification is necessary before substitution in space-constrained designs.

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

A: Yes. All listed substitutes are ROHS3 compliant, MSL 1 rated, and REACH unaffected, matching the original TAJS475K016A compliance profile. Regulatory and environmental requirements are equivalent across all parts.

Q: Which substitute offers the lowest ESR performance?

A: TR3A475K016C1500 (Vishay Sprague TANTAMOUNT™ TR3 series) provides the lowest ESR at 1.5 Ohm. This part is suitable for applications requiring minimal impedance and superior transient response characteristics.

Q: Can I substitute a KEMET T491A475K016AT for the original KYOCERA AVX part?

A: Yes. T491A475K016AT meets all core electrical and mechanical requirements (4.7 µF, 16 V, ±10%, 1206 package, surface mount). ESR is 4.0 Ohm and seated height is 1.80 mm. Compliance status (ROHS3, MSL 1) is equivalent. Substitution is electrically and mechanically valid.

Q: What packaging formats are available for procurement?

A: Substitute parts are available in three packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and bulk. Selection depends on assembly volume, automation equipment compatibility, and inventory management requirements. All formats support the same electrical specifications.

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