EST108M063AM3AA Equivalent & Substitute Parts

Part Overview

The EST108M063AM3AA is a 1000 µF, 63 V aluminum electrolytic capacitor manufactured by KEMET in the EST series. This radial, through-hole component is designed for general-purpose applications requiring stable capacitance and extended operational life. The part is currently active in production with 987 units in stock. Equivalent and substitute parts are identified for applications where component availability, performance characteristics, or specific electrical parameters necessitate alternative sourcing options.

Key Parameters

Parameter	Value
Capacitance	1000 µF
Voltage Rating	63 V
Tolerance	±20%
ESR @ 100 kHz	45 mOhm
Lifetime @ 105°C	10000 Hrs
Operating Temperature Range	-40°C to 105°C
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Mounting Type	Through Hole, Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the EST108M063AM3AA is determined by strict equivalence across the following critical parameters: capacitance value (1000 µF), voltage rating (63 V), tolerance (±20%), operating temperature range (-40°C to 105°C), lifetime rating (10000 Hrs @ 105°C), lead spacing (0.295" / 7.50 mm), case diameter (0.630" / 16.00 mm), and through-hole radial mounting configuration. All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications. Variations in ESR, ripple current ratings, and case height are secondary parameters that do not prevent substitution but may influence performance in specific high-frequency or high-ripple-current applications.

Parameter Comparison

Parameter	EST108M063AM3AA (KEMET)	ESL108M063AM9AA (KEMET)	63YXJ1000M16X25 (Rubycon)	EKZN630ELL102ML25S (Chemi-Con)
Capacitance	1000 µF	1000 µF	1000 µF	1000 µF
Voltage Rating	63 V	63 V	63 V	63 V
Tolerance	±20%	±20%	±20%	±20%
ESR / Impedance @ 100 kHz	45 mOhm	26 mOhm	32 mOhms	24 mOhms
Lifetime @ 105°C	10000 Hrs	10000 Hrs	10000 Hrs	10000 Hrs
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height (Seated Max)	1.496" (38.00 mm)	1.260" (32.00 mm)	1.063" (27.00 mm)	1.043" (26.50 mm)
Mounting Type	Through Hole, Radial	Through Hole, Radial	Through Hole, Radial	Through Hole, Radial
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full ROHS3 compliance, ensuring regulatory alignment with current manufacturing standards. The EST108M063AM3AA and its substitutes are functionally equivalent across all critical electrical parameters: capacitance, voltage rating, tolerance, and lifetime specifications. Selection among these parts should be based on circuit board layout constraints and available inventory.

The ESL108M063AM9AA (KEMET) offers reduced ESR (26 mOhm versus 45 mOhm) and improved ripple current handling while maintaining identical electrical ratings. This part is available in higher inventory quantity (2850 units) and features a more compact case height (1.260" versus 1.496"), making it suitable for space-constrained applications.

The 63YXJ1000M16X25 (Rubycon) and EKZN630ELL102ML25S (Chemi-Con) provide further case height reduction (1.063" and 1.043" respectively) with comparable or superior impedance characteristics. Both parts support higher ripple current ratings at 100 kHz, benefiting applications with elevated AC stress requirements.

All substitute parts are through-hole radial configurations with identical lead spacing (7.50 mm) and case diameter (16.00 mm), ensuring direct printed circuit board compatibility without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the ESL108M063AM9AA replace the EST108M063AM3AA in all applications?

A: Yes. Both parts share identical capacitance (1000 µF), voltage rating (63 V), tolerance (±20%), operating temperature range (-40°C to 105°C), and lifetime specification (10000 Hrs @ 105°C). The ESL108M063AM9AA features lower ESR and higher ripple current capability, making it functionally superior. The reduced case height (1.260" versus 1.496") requires verification of available board space.

Q: What is the primary difference between the KEMET EST and ESL series parts?

A: The ESL108M063AM9AA exhibits lower equivalent series resistance (26 mOhm versus 45 mOhm at 100 kHz) and increased ripple current ratings. Both series maintain identical core electrical specifications and are ROHS3 compliant. The ESL series represents an improved design with enhanced high-frequency performance characteristics.

Q: Are the Rubycon and Chemi-Con parts mechanically compatible with the original circuit board?

A: Yes. All substitute parts maintain the same lead spacing (0.295" / 7.50 mm), case diameter (0.630" / 16.00 mm), and through-hole radial mounting configuration. The reduced case heights (1.063" and 1.043" respectively) provide additional clearance margin and do not create compatibility issues. Verification of available vertical space is recommended for applications with tight component density.

Q: How do ripple current ratings affect part selection?

A: Ripple current capacity determines the maximum AC current the capacitor can safely handle without exceeding temperature limits. The EST108M063AM3AA supports 1.79 A @ 100 kHz. The ESL108M063AM9AA supports 2.62 A, while the Rubycon and Chemi-Con parts support 2.73 A and 2.89 A respectively. Selection should match or exceed the circuit's actual ripple current demand at the operating frequency.

Q: Do all substitute parts meet the same regulatory and compliance standards?

A: Yes. All listed parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Compliance certifications are equivalent across all options.

Q: What inventory considerations apply to these substitutes?

A: The EST108M063AM3AA has 987 units in stock. The ESL108M063AM9AA offers significantly higher availability (2850 units), while the Rubycon 63YXJ1000M16X25 and Chemi-Con EKZN630ELL102ML25S provide 1400 and 1184 units respectively. Inventory levels may influence procurement decisions for high-volume applications.

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