Equivalent & Substitute Parts for RWA0J331MEG

Part Overview

The RWA0J331MEG is a 330 µF, 6.3 V aluminum polymer capacitor manufactured by Nichicon in the 2917 (7343 Metric) surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and production continuity. The part is suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	6.3 V
Type	Aluminum Polymer
Package	2917 (7343 Metric)
Mounting Type	Surface Mount
ESR	15 mOhm
Operating Temperature Range	-55°C to 105°C
Lifetime	1000 Hrs @ 105°C
Tolerance	±20%

Substitute Part Grouping Explanation

Substitution of the RWA0J331MEG is determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)
Package Footprint: 2917 (7343 Metric) (physical compatibility)
Mounting Type: Surface Mount (assembly compatibility)
Voltage Rating: Minimum 6.3 V (electrical safety requirement)
Type: Aluminum Polymer (functional equivalence)

The substitute part A700X337M004ATE010 meets these criteria with identical capacitance, package, and mounting specifications. While the voltage rating is lower (4 V versus 6.3 V), this part is not suitable for direct substitution in applications requiring the full 6.3 V rating. However, it may serve as an alternative in circuits operating at 4 V or lower.

Parameter Comparison

Parameter	RWA0J331MEG (Nichicon)	A700X337M004ATE010 (KEMET)
Capacitance	330 µF	330 µF
Voltage Rating	6.3 V	4 V
Type	Aluminum Polymer	Aluminum Polymer
Package	2917 (7343 Metric)	2917 (7343 Metric)
ESR	15 mOhm	10 mOhm
Lifetime @ Temperature	1000 Hrs @ 105°C	2000 Hrs @ 125°C
Operating Temperature Range	-55°C to 105°C	-55°C to 125°C
Tolerance	±20%	±20%
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active

Engineering Selection Recommendations

The RWA0J331MEG is obsolete and no longer in active production. The A700X337M004ATE010 is an active product from KEMET with superior performance characteristics in terms of ESR (10 mOhm versus 15 mOhm) and extended lifetime rating (2000 Hrs @ 125°C versus 1000 Hrs @ 105°C).

Selection of A700X337M004ATE010 is appropriate for applications operating at 4 V or lower. For circuits requiring the full 6.3 V rating of the original part, alternative 330 µF, 6.3 V aluminum polymer capacitors in the 2917 package from other manufacturers must be evaluated.

Both parts are REACH Unaffected and classified under ECCN EAR99, with identical moisture sensitivity levels (MSL 3, 168 Hours).

Frequently Asked Questions (FAQ)

Q: Can A700X337M004ATE010 replace RWA0J331MEG in all applications?

A: No. The substitute part has a lower voltage rating (4 V versus 6.3 V). It is suitable only for circuits operating at 4 V or lower. Applications requiring 6.3 V operation require a different substitute with matching voltage specifications.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 2917 (7343 Metric) package with identical footprints (0.287" L x 0.169" W / 7.30 mm x 4.30 mm). Height differs slightly: RWA0J331MEG is 0.177" (4.50 mm) maximum, while A700X337M004ATE010 is 0.169" (4.30 mm) maximum. Both are compatible with the same PCB land pattern.

Q: What is the difference in ESR performance?

A: A700X337M004ATE010 has lower ESR (10 mOhm) compared to RWA0J331MEG (15 mOhm), resulting in reduced heat generation and improved ripple current handling. The KEMET part specifies 4.7 A ripple current capability at 100 kHz.

Q: Is the KEMET part RoHS compliant?

A: Yes. A700X337M004ATE010 is RoHS3 compliant. Both parts are REACH Unaffected.

Q: What is the packaging format for A700X337M004ATE010?

A: A700X337M004ATE010 is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

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