TAJS685M010RNJ Equivalent & Substitute Parts

Part Overview

The TAJS685M010RNJ is a 6.8 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 designed for general purpose applications requiring stable capacitance in compact form factors. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across different manufacturers or product lines while meeting the same application requirements.

Substiute Parts

TAJS685M010RNJ

KYOCERA AVXIn Stock: 745TAJS685M010RNJ Datasheet

Current PartRFQ

F951D685MQAAQ2

KYOCERA AVXIn Stock: 1111F951D685MQAAQ2 Datasheet

DirectRFQ

T494A685M010AT

KEMETIn Stock: 2833T494A685M010AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TAJS685M010RNJ is determined by the following critical parameters:

• Capacitance Value: Must be 6.8 µF
• Tolerance: Must be ±20%
• Voltage Rating: Must be rated at 10 V or higher
• Package / Case: Must be 1206 (3216 Metric) surface mount
• Operating Temperature Range: Must support -55°C ~ 125°C
• RoHS Compliance: Must maintain ROHS3 Compliant status

Two substitute parts meet these criteria with variations in construction type, voltage rating, and ESR characteristics:

1. F951D685MQAAQ2 (KYOCERA AVX): Conformal coated variant with elevated voltage rating (20 V) and identical ESR (4 Ohm)
2. T494A685M010AT (KEMET): Molded variant with matched voltage rating (10 V) and lower ESR (3 Ohm)

Parameter Comparison

Engineering Selection Recommendations

TAJS685M010RNJ (Original Part) Primary selection for applications requiring molded tantalum construction with minimal height profile (1.20mm seated height) and unlimited moisture sensitivity handling. Active product status with ROHS3 compliance and REACH unaffected designation.

F951D685MQAAQ2 (KYOCERA AVX Substitute) Suitable for applications where elevated voltage margin (20 V rating versus 10 V) provides design headroom. Conformal coated construction offers enhanced environmental protection. Note: Moisture sensitivity level increases to MSL 3 (168 hours), requiring controlled storage and handling. Seated height increases to 1.60mm. Maintains identical ESR (4 Ohm) and KYOCERA AVX manufacturer continuity.

T494A685M010AT (KEMET Substitute) Applicable for designs prioritizing lower ESR performance (3 Ohm versus 4 Ohm). Molded construction matches original part type. Voltage rating matches at 10 V. Maintains unlimited moisture sensitivity (MSL 1). Seated height increases to 1.80mm. KEMET manufacturer designation with Active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can F951D685MQAAQ2 be used as a direct replacement for TAJS685M010RNJ? A: F951D685MQAAQ2 is electrically compatible as a substitute. The 20 V rating exceeds the 10 V requirement, and capacitance, tolerance, and package dimensions are identical. However, the conformal coated construction and increased MSL rating (3 versus 1) require verification of storage and handling procedures in your manufacturing environment. Seated height increases from 1.20mm to 1.60mm; confirm PCB layout clearance.

Q: What is the primary difference between T494A685M010AT and TAJS685M010RNJ? A: Both parts share identical capacitance (6.8 µF), tolerance (±20%), voltage rating (10 V), and package (1206). The T494A685M010AT features lower ESR (3 Ohm versus 4 Ohm) and is manufactured by KEMET rather than KYOCERA AVX. Seated height is 1.80mm compared to 1.20mm; verify PCB layout compatibility.

Q: Are all three parts ROHS3 compliant? A: Yes. TAJS685M010RNJ, F951D685MQAAQ2, and T494A685M010AT are all ROHS3 compliant and REACH unaffected.

Q: What does MSL 1 versus MSL 3 mean for component handling? A: MSL 1 (Unlimited) indicates the component has unlimited shelf life under controlled conditions. MSL 3 (168 Hours) requires the component to be used within 168 hours of package opening under specified humidity and temperature conditions. F951D685MQAAQ2 carries MSL 3 designation; TAJS685M010RNJ and T494A685M010AT carry MSL 1.

Q: Can height differences affect PCB assembly? A: Yes. TAJS685M010RNJ has a maximum seated height of 0.047" (1.20mm), F951D685MQAAQ2 is 0.063" (1.60mm), and T494A685M010AT is 0.071" (1.80mm). Verify PCB layout, solder reflow profiles, and component placement clearances before substitution.

Q: Are all three parts available in Tape & Reel (TR) packaging? A: Yes. TAJS685M010RNJ, F951D685MQAAQ2, and T494A685M010AT are all supplied in Tape & Reel packaging suitable for automated assembly.