Equivalent & Substitute Parts for 6.3MS5100MEFC6.3X5

Part Overview

The Rubycon 6.3MS5100MEFC6.3X5 is a 100 µF, 6.3 V aluminum electrolytic capacitor in radial, can package rated for 1000 hours at 85°C. This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage Rating	6.3 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Package Type	Radial, Can
Lead Spacing	0.098" (2.50 mm)
Diameter	0.248" (6.30 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 6.3MS5100MEFC6.3X5 is determined by the following critical parameters:

Capacitance: 100 µF (exact match required)
Voltage Rating: 6.3 V minimum (equal or higher voltage ratings are acceptable)
Tolerance: ±20% (standard tolerance)
Package: Radial, Can with 0.098" (2.50 mm) lead spacing
Mounting: Through Hole configuration
Physical Dimensions: 0.248" (6.30 mm) diameter

Substitute parts are grouped into three categories:

Direct Equivalents (Same Voltage Rating): Parts with 6.3 V rating and identical electrical specifications maintain pin-for-pin compatibility with identical thermal performance characteristics.

Upgraded Substitutes (Higher Voltage Rating): Parts rated at 10 V or 16 V provide voltage margin while maintaining the same capacitance, tolerance, and package footprint. These are suitable for applications where the circuit voltage does not exceed the original 6.3 V specification.

Enhanced Performance Substitutes: Parts with extended lifetime ratings (2000 hours) or higher operating temperature ranges offer improved reliability while maintaining electrical and mechanical compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ Temp.	Operating Temp. Range	Height (Max)	Product Status	Inventory
6.3MS5100MEFC6.3X5	Rubycon	100 µF	6.3 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.256" (6.50 mm)	Obsolete	1746 Pcs
6.3MH5100MEFC6.3X5	Rubycon	100 µF	6.3 V	1000 Hrs @ 105°C	-40°C ~ 105°C	0.256" (6.50 mm)	Obsolete	1005 Pcs
ECE-A0JKS101	Panasonic Electronic Components	100 µF	6.3 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	Active	81525 Pcs
UML0J101MDD	Nichicon	100 µF	6.3 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.236" (6.00 mm)	Active	1025 Pcs
UMR0J101MDD	Nichicon	100 µF	6.3 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.236" (6.00 mm)	Active	980 Pcs
ECE-A1AKA101	Panasonic Electronic Components	100 µF	10 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.276" (7.00 mm)	Active	3807 Pcs
ECE-A1CKA101	Panasonic Electronic Components	100 µF	16 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.276" (7.00 mm)	Active	2568 Pcs
EEA-GA1A101	Panasonic Electronic Components	100 µF	10 V	1000 Hrs @ 105°C	-55°C ~ 105°C	0.276" (7.00 mm)	Active	8891 Pcs
ECE-A1AKS101I	Panasonic Electronic Components	100 µF	10 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.236" (6.00 mm)	Active	39006 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

ECE-A0JKS101 (Panasonic) and UML0J101MDD (Nichicon) are direct equivalents with 6.3 V rating and 1000-hour lifetime at 85°C. ECE-A0JKS101 offers superior inventory availability (81,525 units) and active product status. UML0J101MDD provides comparable performance with slightly different physical dimensions.

For Enhanced Reliability:

UMR0J101MDD (Nichicon) extends lifetime to 2000 hours at 85°C while maintaining 6.3 V rating and identical electrical characteristics. This part is suitable for applications requiring extended operational life.

For Voltage Margin Applications:

ECE-A1AKA101 (10 V) and ECE-A1CKA101 (16 V) provide higher voltage ratings suitable for circuits where design margin is required. Both maintain 100 µF capacitance and ±20% tolerance. Height increases to 0.276" (7.00 mm) must be verified against PCB layout constraints.

For Extended Temperature Range:

EEA-GA1A101 (Panasonic) operates from -55°C to 105°C with 1000-hour lifetime at 105°C, providing superior thermal performance. This part is recommended for applications in temperature-critical environments.

For Compact Footprint:

ECE-A0JKS101 and ECE-A1AKS101I feature reduced height (0.197" to 0.236") compared to the original part (0.256"), enabling space-constrained designs.

All substitute parts are ROHS3 compliant and carry active product status except the Rubycon MH5 series upgrade.

Frequently Asked Questions (FAQ)

Q: Can I use a 10 V or 16 V rated capacitor in place of the 6.3 V original part?

A: Yes. Higher voltage-rated capacitors are electrically compatible in circuits designed for lower voltages. The circuit voltage must not exceed the original 6.3 V specification. Verify physical dimensions against PCB layout, as higher voltage ratings typically result in increased height.

Q: What is the difference between direct equivalents and upgraded substitutes?

A: Direct equivalents (ECE-A0JKS101, UML0J101MDD) maintain identical 6.3 V voltage rating and thermal characteristics. Upgraded substitutes (ECE-A1AKA101, ECE-A1CKA101, EEA-GA1A101) offer higher voltage ratings or extended temperature ranges, providing design margin or enhanced reliability.

Q: Does the height difference between substitute parts affect PCB compatibility?

A: Yes. The original part measures 0.256" (6.50 mm) in height. Substitutes range from 0.197" to 0.276". Verify clearance above and below the component on the PCB. Taller parts may require layout modification.

Q: Which substitute offers the best inventory availability?

A: ECE-A0JKS101 (Panasonic) provides the highest inventory level at 81,525 units with active product status, ensuring long-term supply continuity.

Q: Is the 2000-hour lifetime part (UMR0J101MDD) a direct replacement?

A: Yes. UMR0J101MDD maintains identical 6.3 V rating, 100 µF capacitance, and ±20% tolerance. The extended 2000-hour lifetime at 85°C provides improved reliability without electrical or mechanical incompatibility.

Q: What packaging options are available for these substitutes?

A: Most substitutes are supplied in bulk packaging. ECE-A1AKS101I is available in Cut Tape (CT) format for automated assembly applications. Verify packaging requirements with procurement specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and distribution.

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