F930J686KAA Equivalent & Substitute Parts

Part Overview

The F930J686KAA is a 68 µF molded tantalum capacitor rated at 6.3 V in a 1206 (3216 Metric) surface mount package, manufactured by KYOCERA AVX. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -55°C to 125°C with a lifetime specification of 2000 hours at 125°C, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

F930J686KAA

KYOCERA AVXIn Stock: 1127F930J686KAA Datasheet

Current PartRFQ

T491A686K006AT

KEMETIn Stock: 22200T491A686K006AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the F930J686KAA is determined by strict equivalence across the following critical parameters:

• Capacitance value: 68 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 6.3 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)
• Type: Molded Tantalum (exact match required)

The T491A686K006AT from KEMET meets all substitution criteria. While the equivalent series resistance (ESR) differs between the main part (2Ohm @ 100kHz) and the substitute (4Ohm), both values remain within acceptable ranges for general-purpose tantalum capacitor applications and do not disqualify the substitute from functional equivalence in standard circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The T491A686K006AT is the qualified substitute for the F930J686KAA. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part is currently in active production status with substantial inventory availability (22,155 pcs), ensuring supply chain continuity compared to the obsolete original part (1,115 pcs remaining).

Selection of the KEMET substitute is supported by identical electrical specifications across capacitance, voltage rating, tolerance, and temperature operating range. Both parts share identical physical dimensions and mounting characteristics, enabling direct board-level replacement without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the T491A686K006AT directly replace the F930J686KAA on existing PCBs?

A: Yes. Both parts share identical package dimensions (1206 / 3216 Metric), height specifications (0.071" maximum seated height), and surface mount characteristics. No PCB layout changes are required.

Q: What is the significance of the ESR difference between the two parts?

A: The F930J686KAA specifies 2Ohm ESR while the T491A686K006AT specifies 4Ohm ESR. Both values are within normal operating ranges for general-purpose molded tantalum capacitors. ESR differences of this magnitude do not affect functional equivalence in standard circuit applications.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited). Regulatory and environmental compliance is equivalent.

Q: Why is the original part listed as obsolete?

A: The F930J686KAA (KYOCERA AVX F93 series) has been discontinued by the manufacturer. The T491A686K006AT (KEMET T491 series) remains in active production, providing long-term supply availability and design support.

Q: Are packaging options different between the two parts?

A: The original part is supplied in standard packaging. The substitute is available in Tape & Reel (TR) format, which is standard for high-volume production environments and offers no functional difference to the component itself.