EEU-FC2A1R0 Equivalent & Substitute Parts

Part Overview

The EEU-FC2A1R0 is a 1 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Panasonic Electronic Components. This component is rated for automotive applications with AEC-Q200 certification and features a 1000-hour lifetime at 105°C. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and production continuity.

Key Parameters

Parameter	Value
Capacitance	1 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.079" (2.00mm)
Size / Dimension	0.197" Dia (5.00mm)
Height - Seated (Max)	0.433" (11.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FC2A1R0 is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 1 µF (exact match required)
Voltage Rating: 100 V minimum (equal or higher acceptable)
Tolerance: ±20% (matching or tighter acceptable)
Polarization: Polar (must match)
Mounting Type: Through Hole (must match)
Package Type: Radial, Can (must match)

Secondary Compatibility Factors:

Operating Temperature Range: Must support -55°C ~ 105°C minimum
Lifetime @ Temperature: Must meet or exceed 1000 Hrs @ 105°C
Lead Spacing and physical dimensions: Must accommodate PCB layout constraints

Two substitute parts are identified based on these criteria:

EKMG101ELL1R0ME11D (Chemi-Con) — Direct functional equivalent with identical electrical specifications and compatible physical footprint.
400RX301M6.3X11 (Rubycon) — Similar substitute with higher voltage rating (400 V) and enhanced thermal performance; physical dimensions differ slightly.

Parameter Comparison

Parameter	EEU-FC2A1R0 (Panasonic)	EKMG101ELL1R0ME11D (Chemi-Con)	400RX301M6.3X11 (Rubycon)
Capacitance	1 µF	1 µF	1 µF
Voltage Rating	100 V	100 V	400 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	1000 Hrs @ 105°C	1000 Hrs @ 105°C	1000 Hrs @ 130°C
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-25°C ~ 130°C
Polarization	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.079" (2.00mm)	0.079" (2.00mm)	0.098" (2.50mm)
Size / Dimension	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.248" Dia (6.30mm)
Height - Seated (Max)	0.433" (11.00mm)	0.492" (12.50mm)	0.512" (13.00mm)
Ripple Current @ 120 Hz	9.8 mA	15 mA	12 mA
Product Status	Obsolete	Active	Active
Ratings	AEC-Q200	—	AEC-Q200

Engineering Selection Recommendations

EKMG101ELL1R0ME11D (Chemi-Con KMG Series) is the primary direct substitute. It matches the EEU-FC2A1R0 in all critical electrical parameters and maintains identical lead spacing and diameter. The height difference of 0.059" (1.50mm) is minor and typically accommodated in standard PCB layouts. This part is active in production with ROHS3 compliance and offers superior ripple current handling (15 mA @ 120 Hz versus 9.8 mA). Suitable for general-purpose applications where the original Panasonic automotive-rated part is no longer available.

400RX301M6.3X11 (Rubycon RX30 Series) is a similar substitute with enhanced specifications. The 400 V voltage rating provides additional design margin, and the 1000-hour lifetime at 130°C exceeds the original specification. This part retains AEC-Q200 automotive certification. However, the increased physical dimensions (0.248" diameter, 0.512" height, and 0.098" lead spacing) require PCB layout verification before implementation. This option is preferred for applications requiring higher voltage headroom or extended thermal performance.

Frequently Asked Questions (FAQ)

Q: Can EKMG101ELL1R0ME11D be used as a direct drop-in replacement for EEU-FC2A1R0?

A: Yes, with minor height consideration. The EKMG101ELL1R0ME11D matches the EEU-FC2A1R0 in capacitance (1 µF), voltage rating (100 V), tolerance (±20%), lead spacing (0.079" / 2.00mm), and diameter (0.197" / 5.00mm). The seated height increases from 0.433" to 0.492", a difference of 0.059" that is typically accommodated in standard through-hole PCB designs.

Q: Why does 400RX301M6.3X11 have a 400 V rating when the original part is 100 V?

A: The 400RX301M6.3X11 is a similar substitute with enhanced voltage and thermal specifications. Higher voltage ratings provide additional design margin and do not negatively impact circuit function when the circuit operates at 100 V. However, the increased physical size requires PCB layout verification.

Q: Are there any compliance differences between the substitutes?

A: The EKMG101ELL1R0ME11D is ROHS3 compliant but does not list AEC-Q200 automotive certification. The 400RX301M6.3X11 retains AEC-Q200 certification. For automotive applications requiring AEC-Q200 compliance, the Rubycon part is the preferred choice.

Q: What is the impact of different ripple current ratings?

A: The EKMG101ELL1R0ME11D (15 mA @ 120 Hz) and 400RX301M6.3X11 (12 mA @ 120 Hz) both exceed the original EEU-FC2A1R0 specification (9.8 mA @ 120 Hz). Higher ripple current capability indicates improved thermal performance and longer operational life under AC stress conditions.

Q: Can I use 400RX301M6.3X11 in a space-constrained layout?

A: No. The 400RX301M6.3X11 has larger physical dimensions (0.248" diameter, 0.512" height, 0.098" lead spacing) compared to the original part. PCB layout verification is required before implementation. For space-constrained applications, EKMG101ELL1R0ME11D is the preferred option.

Q: What is the operating temperature difference between substitutes?

A: The EEU-FC2A1R0 and EKMG101ELL1R0ME11D both operate from -55°C to 105°C. The 400RX301M6.3X11 operates from -25°C to 130°C, offering extended high-temperature performance. For applications requiring operation below -25°C, the Chemi-Con or original Panasonic part is required.

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