10MS522MEFC5X5 Equivalent & Substitute Parts

Part Overview

The 10MS522MEFC5X5 is a 22 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Rubycon (MS5 series). This component is rated for 1000 hours at 85°C and is designed for general-purpose applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Capacitance	22 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.079" (2.00 mm)
Package Diameter	0.197" (5.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 10MS522MEFC5X5 is determined by the following criteria:

Direct Equivalents maintain identical electrical specifications: 22 µF capacitance, 10 V voltage rating, ±20% tolerance, and matching physical dimensions (5.00 mm diameter, 2.00 mm lead spacing). These parts are pin-compatible and functionally interchangeable without circuit modification.

Upgrade Substitutes increase voltage rating (16 V or 25 V) or temperature lifetime rating while maintaining 22 µF capacitance, ±20% tolerance, and identical lead spacing and package diameter. These parts are backward-compatible in applications where the original 10 V rating is sufficient, as higher voltage ratings provide additional design margin. Physical height may vary slightly.

Similar Parts maintain 22 µF capacitance and identical package dimensions but feature significantly higher voltage ratings (50 V) or extended lifetime ratings (2000 Hrs @ 85°C). These are suitable only when circuit design permits higher voltage operation.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Height (Max)	Product Status
10MS522MEFC5X5	Rubycon	22 µF	10 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.256" (6.50 mm)	Obsolete
UML1A220MDD	Nichicon	22 µF	10 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.236" (6.00 mm)	Active
16MH522MEFC5X5	Rubycon	22 µF	16 V	±20%	1000 Hrs @ 105°C	-40°C ~ 105°C	0.256" (6.50 mm)	Obsolete
UML1C220MDD	Nichicon	22 µF	16 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.236" (6.00 mm)	Active
ECE-A1EKA220	Panasonic	22 µF	25 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.276" (7.00 mm)	Active
EEA-FC1E220	Panasonic	22 µF	25 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.276" (7.00 mm)	Active
EEA-GA1C220	Panasonic	22 µF	16 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.276" (7.00 mm)	Active
EEA-GA1E220	Panasonic	22 µF	25 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.276" (7.00 mm)	Active
ESK226M050AC3FA	KEMET	22 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.492" (12.50 mm)	Active

Engineering Selection Recommendations

For Direct Replacement (10 V, 1000 Hrs @ 85°C): UML1A220MDD (Nichicon, Active) is the primary direct equivalent. It maintains identical electrical specifications and is currently in active production. Physical height is 0.236" versus the original 0.256", which is acceptable for through-hole applications with standard PCB spacing.

For Voltage Margin Upgrade (16 V Rating): UML1C220MDD (Nichicon, Active) or EEA-GA1C220 (Panasonic, Active) provide 16 V rating with maintained 22 µF capacitance. UML1C220MDD operates at 1000 Hrs @ 85°C with -40°C ~ 85°C range. EEA-GA1C220 extends to 1000 Hrs @ 105°C with -55°C ~ 105°C range, suitable for higher ambient temperature environments.

For Extended Temperature and Lifetime (25 V Rating): ECE-A1EKA220 (Panasonic, Active) or EEA-GA1E220 (Panasonic, Active) provide 25 V rating. EEA-GA1E220 offers extended temperature range (-55°C ~ 105°C) and 1000 Hrs @ 105°C rating for demanding thermal environments.

For Automotive Applications: EEA-FC1E220 (Panasonic, Active) carries AEC-Q200 rating, 25 V voltage, and 1000 Hrs @ 105°C lifetime, suitable for automotive-grade designs.

For High-Voltage Applications (50 V): ESK226M050AC3FA (KEMET, Active) provides 50 V rating with extended 2000 Hrs @ 85°C lifetime. Physical height increases to 0.492", requiring PCB layout verification.

All recommended active parts are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can UML1A220MDD directly replace 10MS522MEFC5X5 without circuit modification? A: Yes. UML1A220MDD maintains identical capacitance (22 µF), voltage rating (10 V), tolerance (±20%), and lead spacing (2.00 mm). The 0.02" height difference (0.236" vs 0.256") does not affect through-hole PCB compatibility.

Q: What is the advantage of using a 16 V or 25 V rated substitute? A: Higher voltage ratings provide design margin in applications where circuit voltage may fluctuate or where thermal stress reduces effective voltage rating. They are backward-compatible with 10 V circuits.

Q: Are Panasonic and Nichicon substitutes pin-compatible? A: Yes. All recommended substitutes maintain identical lead spacing (2.00 mm) and package diameter (5.00 mm), ensuring mechanical and electrical pin compatibility.

Q: Does the height difference between parts affect PCB layout? A: For through-hole applications, minor height variations (0.02" to 0.04") are typically accommodated by standard PCB spacing. ESK226M050AC3FA at 0.492" height requires layout verification due to significant increase.

Q: Which substitute is best for high-temperature environments? A: EEA-FC1E220 or EEA-GA1E220 (both rated 1000 Hrs @ 105°C with -55°C ~ 105°C operating range) are suitable for sustained elevated-temperature operation.

Q: Is the obsolete 16MH522MEFC5X5 a viable substitute? A: 16MH522MEFC5X5 is also obsolete. While electrically compatible as a 16 V upgrade, active alternatives (UML1C220MDD, EEA-GA1C220) are preferred for production continuity.

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