F970J685MAAHT3 Equivalent & Substitute Parts

Part Overview

The F970J685MAAHT3 is a 6.8 µF molded tantalum capacitor rated at 6.3 V in 1206 (3216 Metric) surface mount package, manufactured by KYOCERA AVX. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The part features automotive-grade reliability with AEC-Q200 certification and operates across a temperature range of -55°C to 135°C with a rated lifetime of 2000 hours at 135°C.

Substiute Parts

F970J685MAAHT3

KYOCERA AVXIn Stock: 984F970J685MAAHT3 Datasheet

Current PartRFQ

T491A685M006AT

KEMETIn Stock: 2668T491A685M006AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the F970J685MAAHT3 is determined by strict equivalence across the following parameters:

• Capacitance Value: 6.8 µF (exact match required)
• Tolerance: ±20% (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)
• Type: Molded Tantalum (exact match required)

The substitute part T491A685M006AT meets all these core electrical and mechanical parameters, enabling direct functional replacement in applications where the F970J685MAAHT3 is specified.

Parameter Comparison

Engineering Selection Recommendations

The T491A685M006AT (KEMET) serves as the direct substitute for the obsolete F970J685MAAHT3 (KYOCERA AVX). Both components satisfy identical electrical specifications (6.8 µF, ±20%, 6.3 V) and mechanical requirements (1206 package, surface mount). The substitute part is currently in active production status, ensuring availability for new designs and replacement inventory.

Both parts maintain ROHS3 compliance and are suitable for general industrial applications. The T491A685M006AT features improved moisture sensitivity characteristics (MSL 1 versus MSL 3), reducing handling and storage constraints. The substitute operates across a slightly narrower maximum temperature range (-55°C to 125°C versus -55°C to 135°C) and exhibits higher ESR (6 Ohm versus 4.6 Ohm), which should be evaluated within the specific circuit context to confirm compatibility.

Frequently Asked Questions (FAQ)

Q: Can T491A685M006AT replace F970J685MAAHT3 in all applications?

A: The T491A685M006AT meets all core electrical and mechanical specifications for direct substitution. However, the higher ESR (6 Ohm versus 4.6 Ohm) and slightly lower maximum operating temperature (125°C versus 135°C) should be verified against circuit requirements before implementation.

Q: Are the physical dimensions identical?

A: Yes. Both components use the 1206 (3216 Metric) package with identical length (0.126" / 3.20mm), width (0.063" / 1.60mm), and maximum seated height (0.071" / 1.80mm). PCB layout and assembly tooling require no modification.

Q: What is the difference in moisture sensitivity?

A: The F970J685MAAHT3 has MSL 3 (168-hour floor life), while the T491A685M006AT has MSL 1 (unlimited floor life). The substitute part requires less stringent moisture control during storage and handling.

Q: Are both parts RoHS compliant?

A: Yes. Both the F970J685MAAHT3 and T491A685M006AT are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: Why is the original part obsolete?

A: The F970J685MAAHT3 has been discontinued by KYOCERA AVX. The T491A685M006AT from KEMET provides equivalent functionality and is actively manufactured, making it the recommended solution for ongoing production requirements.