Equivalent & Substitute Parts for F320G337MCC

Part Overview

The F320G337MCC is a 330 µF molded tantalum polymer capacitor rated at 4 V in a 2312 (6032 Metric) surface mount package, manufactured by Nichicon. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement continuity. The part features a low ESR of 55 mOhm @ 100 kHz and operates across a temperature range of -55°C to 105°C, making it suitable for general-purpose applications requiring stable capacitance and minimal impedance.

Substiute Parts

F320G337MCC

NichiconIn Stock: 860F320G337MCC Datasheet

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T491C337K004AT

KEMETIn Stock: 1397T491C337K004AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the F320G337MCC is determined by strict equivalence in the following parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Component Type: Molded Tantalum Capacitor (exact match required)

The substitute part T491C337K004AT meets all mandatory substitution criteria. Variations in tolerance, ESR, and operating temperature range do not preclude substitution provided the application requirements fall within the substitute's specifications.

Parameter Comparison

Engineering Selection Recommendations

The T491C337K004AT from KEMET is a direct substitute for the obsolete F320G337MCC. Both components share identical capacitance, voltage rating, package dimensions, and mounting configuration. The substitute part carries active product status, ensuring long-term availability and supply chain continuity.

Key considerations for selection:

• Tolerance: The KEMET substitute offers tighter tolerance (±10% versus ±20%), which may provide improved circuit performance in applications sensitive to capacitance variation.
• ESR: The substitute exhibits higher ESR (900 mOhm versus 55 mOhm). Applications requiring minimal impedance at 100 kHz should evaluate whether this difference impacts performance.
• Temperature Range: The KEMET part supports operation to 125°C, exceeding the original part's 105°C maximum. This provides additional thermal margin for high-temperature environments.
• Height: The substitute seated height is 0.110" (2.80mm) compared to 0.106" (2.70mm) for the original. PCB clearance must be verified.
• Compliance: Both parts maintain REACH Unaffected and EAR99 classification, ensuring regulatory equivalence.

Frequently Asked Questions (FAQ)

Q: Can the T491C337K004AT be used as a direct replacement for the F320G337MCC?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (4 V), package (2312 / 6032 Metric), and mounting type (surface mount). Physical dimensions are equivalent within tolerance. The substitute is suitable for direct PCB substitution.

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

A: ESR (Equivalent Series Resistance) affects impedance at operating frequencies. The F320G337MCC has 55 mOhm ESR while the T491C337K004AT has 900 mOhm ESR at 100 kHz. Applications requiring low impedance filtering or high-frequency ripple current handling should evaluate whether the higher ESR of the substitute meets circuit requirements.

Q: Does the tighter tolerance of the substitute part provide an advantage?

A: The T491C337K004AT offers ±10% tolerance versus ±20% for the original part. Tighter tolerance reduces capacitance variation across production batches, which may improve circuit stability in applications sensitive to capacitance drift. However, this advantage is only relevant if the circuit design requires it.

Q: Are there height clearance concerns with the substitute part?

A: The T491C337K004AT has a maximum seated height of 0.110" (2.80mm) compared to 0.106" (2.70mm) for the F320G337MCC. The 0.004" (0.10mm) difference is minimal but should be verified against PCB layout constraints, particularly in space-constrained designs.

Q: Is the extended temperature range of the substitute part beneficial?

A: The T491C337K004AT operates to 125°C versus 105°C for the original part. This extended range provides additional thermal margin and may be advantageous in high-temperature applications. However, it offers no benefit for designs operating within the original part's temperature specification.

Q: Are both parts compliant with current regulations?

A: Yes. Both the F320G337MCC and T491C337K004AT maintain REACH Unaffected status and EAR99 classification, ensuring regulatory equivalence for export and use in regulated markets.