TACT686M006RTA Equivalent & Substitute Parts

Part Overview

The TACT686M006RTA is a 68 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 6.3 V with ±20% tolerance. This component is classified as Active and is designed for general-purpose surface mount applications in the 1411 (3528 Metric) package footprint. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same capacitance, voltage rating, tolerance, package, and operating temperature range.

Key Parameters

Parameter	Value
Capacitance	68 µF
Voltage Rating	6.3 V
Tolerance	±20%
Package / Case	1411 (3528 Metric), 1210
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Type	Molded Tantalum
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TACT686M006RTA are qualified based on the following criteria:

Capacitance: 68 µF (exact match required)
Voltage Rating: 6.3 V (exact match required)
Tolerance: ±20% (exact match required)
Package / Case: 1411 (3528 Metric) (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Molded Tantalum (exact match required)
RoHS Status: ROHS3 Compliant (compliance maintained)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Equivalent Series Resistance (ESR) and seated height may vary within acceptable design margins. All substitute parts listed maintain identical electrical performance and mechanical compatibility with the original specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Tolerance	ESR	Package / Case	Height - Seated (Max)	Operating Temperature	Product Status	RoHS Status
TACT686M006RTA	KYOCERA AVX	TAC	68 µF	6.3 V	±20%	1 Ohm	1411 (3528 Metric), 1210	0.047" (1.20 mm)	-55°C to 125°C	Active	ROHS3 Compliant
TAJB686M006RNJ	KYOCERA AVX	TAJ	68 µF	6.3 V	±20%	900 mOhm	1411 (3528 Metric), 1210	0.083" (2.10 mm)	-55°C to 125°C	Active	ROHS3 Compliant
TPSB686M006R0500	KYOCERA AVX	TPS	68 µF	6.3 V	±20%	500 mOhm	1411 (3528 Metric), 1210	0.083" (2.10 mm)	-55°C to 125°C	Active	ROHS3 Compliant
293D686X06R3B2TE3	Vishay Sprague	293D	68 µF	6.3 V	±20%	1.8 Ohm	1411 (3528 Metric)	0.083" (2.11 mm)	-55°C to 125°C	Active	ROHS3 Compliant
T491B686M006AT	KEMET	T491	68 µF	6.3 V	±20%	900 mOhm	1411 (3528 Metric)	0.083" (2.10 mm)	-55°C to 125°C	Active	ROHS3 Compliant
T494B686M006AT	KEMET	T494	68 µF	6.3 V	±20%	650 mOhm	1411 (3528 Metric)	0.083" (2.10 mm)	-55°C to 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance. Selection between the TACT686M006RTA and its equivalents is determined by availability, packaging format, and ESR requirements specific to the application circuit.

KYOCERA AVX TAJ and TPS series parts offer lower ESR values (900 mOhm and 500 mOhm respectively) compared to the original TAC series (1 Ohm). The Vishay Sprague 293D series provides an alternative from a different manufacturer with 1.8 Ohm ESR. KEMET T491 and T494 series parts deliver 900 mOhm and 650 mOhm ESR respectively, with documented lifetime ratings of 2000 hours at 125°C.

Seated height varies between 1.20 mm (original TACT686M006RTA) and 2.10–2.11 mm (substitute parts). PCB layout clearance must be verified before substitution.

Frequently Asked Questions (FAQ)

Q: Can TAJB686M006RNJ replace TACT686M006RTA directly?

A: Yes. Both parts share identical capacitance (68 µF), voltage rating (6.3 V), tolerance (±20%), package (1411/3528 Metric), and operating temperature range (-55°C to 125°C). The TAJB has lower ESR (900 mOhm vs. 1 Ohm) and greater seated height (2.10 mm vs. 1.20 mm). PCB clearance must be confirmed.

Q: What is the difference between TPSB686M006R0500 and TAJB686M006RNJ?

A: Both are KYOCERA AVX products with identical electrical specifications. The primary difference is ESR: TPSB has 500 mOhm while TAJB has 900 mOhm. TPSB is preferred for applications requiring lower impedance at high frequencies.

Q: Are KEMET T491B686M006AT and T494B686M006AT interchangeable?

A: Yes, electrically. Both meet the 68 µF, 6.3 V, ±20% specification. T494B has lower ESR (650 mOhm vs. 900 mOhm). Both carry 2000-hour lifetime ratings at 125°C. Seated height is identical at 2.10 mm.

Q: Can I use the Vishay Sprague 293D686X06R3B2TE3 as a substitute?

A: Yes. The 293D series meets all core electrical and mechanical requirements. ESR is 1.8 Ohm, which is higher than most alternatives. Seated height is 2.11 mm. Verify PCB layout compatibility.

Q: What packaging formats are available for these parts?

A: All substitute parts are supplied in Tape & Reel (TR) format. The original TACT686M006RTA packaging format is not specified in the provided data.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All parts listed, including the original TACT686M006RTA, have Moisture Sensitivity Level 1 (Unlimited).

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