EEU-FM1E221 Equivalent & Substitute Parts

Part Overview

The EEU-FM1E221 is a 220 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Panasonic Electronic Components. This component is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is ROHS3 compliant and currently active in production.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand extended operational lifetime, when voltage margin improvements are needed, or when alternative packaging formats are required for manufacturing processes.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.138" (4.60mm)
Size / Dimension	0.315" Dia (8.00mm)
Height - Seated (Max)	0.512" (13.00mm)
Impedance	56 mOhms
Ripple Current @ 120 Hz	665 mA
Ripple Current @ 100 kHz	950 mA

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FM1E221 is determined by the following criteria:

Primary Substitution Criteria (Must Match):

Capacitance: 220 µF
Voltage Rating: 25 V minimum
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package Type: Radial, Can
Physical Dimensions: 0.315" Dia (8.00mm), Height 0.512" (13.00mm) maximum

Secondary Substitution Criteria (May Vary):

Lead Spacing: 0.138" (4.60mm) preferred; 0.197" (5.00mm) acceptable with PCB redesign
Lifetime @ 105°C: 3000 Hrs minimum
Operating Temperature Range: -40°C ~ 105°C minimum
Impedance and Ripple Current: Performance parameters that may differ

Voltage Upgrade Criteria: Parts rated at 35 V are acceptable substitutes for 25 V applications, providing increased voltage margin and typically improved performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Impedance	Ripple Current @ 120 Hz	Product Status	Packaging
EEU-FM1E221	Panasonic	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	56 mOhms	665 mA	Active	Bulk
EEU-FR1E221	Panasonic	220 µF	25 V	6000 Hrs	0.138" (4.60mm)	56 mOhms	665 mA	Active	Bulk
EEU-FM1E221B	Panasonic	220 µF	25 V	3000 Hrs	0.197" (5.00mm)	56 mOhms	665 mA	Active	Cut Tape (CT)
EEU-FM1E221BJ	Panasonic	220 µF	25 V	3000 Hrs	0.197" (5.00mm)	56 mOhms	665 mA	Active	Cut Tape (CT)
227KXM025M	Cornell Dubilier / Illinois Capacitor	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	220 mOhms	380 mA	Active	Bulk
25YXF220MEFC8X11.5	Rubycon	220 µF	25 V	7000 Hrs	0.138" (4.60mm)	250 mOhms	280 mA	Not For New Designs	Bulk
25YXG220MEFC8X11.5	Rubycon	220 µF	25 V	4000 Hrs	0.138" (4.60mm)	130 mOhms	320 mA	Not For New Designs	Bulk
35YXJ220M8X11.5	Rubycon	220 µF	35 V	7000 Hrs	0.138" (4.60mm)	130 mOhms	448 mA	Active	Bulk
35YXJ220MCA8X11.5	Rubycon	220 µF	35 V	7000 Hrs	0.138" (4.60mm)	130 mOhms	448 mA	Active	Bulk
35ZLH220MEFC8X11.5	Rubycon	220 µF	35 V	8000 Hrs	0.138" (4.60mm)	56 mOhms	472.5 mA	Active	Bulk
35ZLQ220MEFC8X11.5	Rubycon	220 µF	35 V	4000 Hrs	0.138" (4.60mm)	49 mOhms	530 mA	Active	Bulk

Engineering Selection Recommendations

Direct Equivalent (Same Voltage, Same Lifetime): EEU-FR1E221 is a direct Panasonic equivalent with identical electrical specifications to EEU-FM1E221, with the distinction of extended lifetime (6000 Hrs vs. 3000 Hrs @ 105°C). Both parts are ROHS3 compliant and rated for -40°C to 105°C operation. This part is recommended for applications where extended operational life is beneficial.

Packaging Variants (Same Specifications, Different Format): EEU-FM1E221B and EEU-FM1E221BJ are Panasonic parts with identical electrical performance but supplied in Cut Tape (CT) packaging instead of Bulk. These parts feature 0.197" (5.00mm) lead spacing instead of 0.138" (4.60mm), requiring PCB layout modification. Both are ROHS3 compliant and active products.

Alternative Manufacturer - Same Voltage Rating: 227KXM025M (Cornell Dubilier / Illinois Capacitor) meets the 220 µF, 25 V specification with identical lead spacing. This part is ROHS3 compliant and active. Impedance is higher (220 mOhms vs. 56 mOhms) and ripple current capability is lower (380 mA @ 120 Hz vs. 665 mA), which may impact performance in high-ripple applications.

Rubycon 25 V Series (Extended Lifetime, Not For New Designs): 25YXF220MEFC8X11.5 and 25YXG220MEFC8X11.5 are Rubycon parts rated at 25 V with extended lifetimes (7000 Hrs and 4000 Hrs respectively). Both are marked "Not For New Designs" and should be used only for legacy system maintenance or replacement applications. ROHS3 compliant.

Voltage-Upgraded Alternatives (35 V Rating): 35YXJ220M8X11.5, 35YXJ220MCA8X11.5, 35ZLH220MEFC8X11.5, and 35ZLQ220MEFC8X11.5 are Rubycon parts rated at 35 V, providing 10 V additional voltage margin over the original 25 V specification. All are ROHS3 compliant and active products. These parts offer extended lifetimes (7000 Hrs to 8000 Hrs @ 105°C) and improved ripple current handling. 35ZLH220MEFC8X11.5 provides the best performance match with 56 mOhms impedance and 8000 Hrs lifetime.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of a 25 V capacitor? A: Yes. A higher voltage rating provides increased voltage margin and is electrically compatible with 25 V applications. The 35 V parts listed are direct substitutes with improved performance characteristics.

Q: What is the difference between EEU-FM1E221 and EEU-FR1E221? A: Both are Panasonic 220 µF, 25 V radial capacitors with identical physical dimensions and lead spacing. The primary difference is lifetime: EEU-FR1E221 is rated for 6000 Hrs @ 105°C compared to 3000 Hrs for EEU-FM1E221. Both are active products and ROHS3 compliant.

Q: Why do EEU-FM1E221B and EEU-FM1E221BJ have different lead spacing? A: These parts are supplied in Cut Tape (CT) packaging format with 0.197" (5.00mm) lead spacing, compared to 0.138" (4.60mm) for the standard Bulk version. Lead spacing differences require PCB layout modification and cannot be used as direct drop-in replacements without design changes.

Q: Are Rubycon parts marked "Not For New Designs" still usable? A: Parts marked "Not For New Designs" are suitable for replacement and maintenance of existing systems but should not be selected for new product designs. For new designs, choose from active product status parts.

Q: What does impedance mean in capacitor selection? A: Impedance (measured in mOhms) indicates the capacitor's resistance to AC current flow at a specific frequency. Lower impedance values indicate better high-frequency performance and lower voltage ripple. The original EEU-FM1E221 has 56 mOhms impedance; substitute parts range from 49 mOhms to 250 mOhms.

Q: Which substitute provides the best performance match to EEU-FM1E221? A: EEU-FR1E221 (Panasonic) provides the closest electrical match with identical impedance (56 mOhms) and ripple current specifications, with the added benefit of extended lifetime. For voltage-upgraded applications, 35ZLH220MEFC8X11.5 (Rubycon) matches the impedance specification while providing 35 V rating and 8000 Hrs lifetime.

Q: Can I use 227KXM025M as a direct replacement? A: 227KXM025M is electrically compatible but has higher impedance (220 mOhms) and lower ripple current capability (380 mA @ 120 Hz vs. 665 mA). It is suitable for low-ripple applications but not recommended for high-ripple current environments.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message