TAJS685K016RNJ Equivalent & Substitute Parts

Part Overview

The TAJS685K016RNJ is a 6.8 µF molded tantalum capacitor rated at 16 V in a 1206 (3216 Metric) surface mount package, manufactured by KYOCERA AVX. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and rated voltage.

Key Parameters

Parameter	Value
Capacitance	6.8 µF
Tolerance	±10%
Voltage - Rated	16 V
Type	Molded Tantalum
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 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: 6.8 µF (exact match required)
Voltage Rating: 16 V (exact match required)
Package / Case: 1206 (3216 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All identified substitute parts meet these criteria. Variations in ESR (Equivalent Series Resistance), packaging format (Tape & Reel vs. Cut Tape), and manufacturer size codes do not disqualify substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage - Rated	ESR (Ω)	Package / Case	Height - Seated (Max)	Operating Temperature	RoHS Status	Product Status
TAJS685K016RNJ	KYOCERA AVX	6.8 µF	±10%	16 V	2.4	1206 (3216 Metric)	0.047" (1.20mm)	-55°C ~ 125°C	ROHS3 Compliant	Active
TAJA685K016RNJ	KYOCERA AVX	6.8 µF	±10%	16 V	4.6	1206 (3216 Metric)	0.071" (1.80mm)	-55°C ~ 125°C	ROHS3 Compliant	Active
TPSA685K016R1500	KYOCERA AVX	6.8 µF	±10%	16 V	1.5	1206 (3216 Metric)	0.071" (1.80mm)	-55°C ~ 125°C	ROHS3 Compliant	Active
293D685X9016A2TE3	Vishay Sprague	6.8 µF	±10%	16 V	4.2	1206 (3216 Metric)	0.071" (1.80mm)	-55°C ~ 125°C	ROHS3 Compliant	Active
TR3A685K016C3000	Vishay Sprague	6.8 µF	±10%	16 V	3.0	1206 (3216 Metric)	0.071" (1.80mm)	-55°C ~ 125°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and regulatory alignment. Selection between TAJS685K016RNJ and its substitutes should be based on:

ESR Considerations: The main part (TAJS685K016RNJ) features 2.4Ω ESR. Substitute TPSA685K016R1500 offers lower ESR at 1.5Ω, while TAJA685K016RNJ, TR3A685K016C3000, and 293D685X9016A2TE3 present higher ESR values (4.6Ω, 3.0Ω, and 4.2Ω respectively). ESR impact on circuit performance must be evaluated within specific application requirements.

Height Clearance: The main part has a seated height of 0.047" (1.20mm), while all substitutes measure 0.071" (1.80mm). PCB layout and component density constraints must accommodate this dimensional difference.

Packaging Format: TAJS685K016RNJ is supplied in Tape & Reel (TR) format. TAJA685K016RNJ is available in Cut Tape (CT) & Digi-Reel® format. TPSA685K016R1500, 293D685X9016A2TE3, and TR3A685K016C3000 are supplied in Tape & Reel (TR) format. Procurement and assembly processes should align with available packaging options.

Manufacturer Availability: KYOCERA AVX parts (TAJS685K016RNJ, TAJA685K016RNJ, TPSA685K016R1500) and Vishay Sprague parts (293D685X9016A2TE3, TR3A685K016C3000) are all in active inventory with documented stock levels.

Frequently Asked Questions (FAQ)

Q: Can TPSA685K016R1500 replace TAJS685K016RNJ directly?

A: Yes, from an electrical and mechanical standpoint. Both are 6.8 µF, 16 V, 1206 package molded tantalum capacitors with identical operating temperature ranges and compliance certifications. The primary difference is ESR: TPSA685K016R1500 has 1.5Ω versus TAJS685K016RNJ's 2.4Ω. Applications sensitive to ESR performance should evaluate this specification.

Q: What is the impact of the height difference between TAJS685K016RNJ (1.20mm) and substitute parts (1.80mm)?

A: The 0.60mm height increase may affect PCB layout in space-constrained designs. Verify clearance with adjacent components and confirm compatibility with assembly equipment and conformal coating processes if applicable.

Q: Are Vishay Sprague parts (293D685X9016A2TE3, TR3A685K016C3000) equivalent to KYOCERA AVX parts?

A: Yes, all specified parameters—capacitance, voltage rating, package, operating temperature, and compliance certifications—are equivalent. ESR values differ (4.2Ω and 3.0Ω respectively versus TAJS685K016RNJ's 2.4Ω), requiring circuit-level evaluation.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format is a procurement and assembly consideration only. Electrical and mechanical specifications remain identical regardless of packaging type.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts, including the main part TAJS685K016RNJ, are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited).

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