EEU-FC0J122LB Equivalent & Substitute Parts

Part Overview

The EEU-FC0J122LB is a 1200 µF, 6.3 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 105°C and carries AEC-Q200 automotive qualification. The part is currently active and available in tape and box packaging.

Substitute parts become necessary when the original part reaches end-of-life status, when packaging requirements differ, or when alternative manufacturers' components meet the same electrical and mechanical specifications for your application.

Key Parameters

Parameter	Value
Capacitance	1200 µF
Voltage Rating	6.3 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Operating Temperature Range	-55°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for aluminum electrolytic capacitors is determined by the following parameters:

Capacitance Value: Must match exactly at 1200 µF
Voltage Rating: Must match or exceed 6.3 V
Tolerance: Must be ±20% or tighter
Polarization: Must be polar
Package Configuration: Must be radial, can type
Lead Spacing: Must match 0.197" (5.00 mm)
Mounting Type: Must be through hole
Operating Temperature Range: Must support -55°C to 105°C minimum
RoHS Compliance: Must maintain ROHS3 compliance

All substitute parts listed meet these core electrical and mechanical requirements. Differences in lifetime rating, ripple current handling, impedance, and physical dimensions are secondary parameters that may influence selection based on specific circuit requirements but do not disqualify substitution.

Parameter Comparison

Parameter	EEU-FC0J122LB (Main)	EEU-FC0J122 (Panasonic)	UPJ0J122MPD (Nichicon)	UPW0J122MPD6 (Nichicon)
Manufacturer	Panasonic	Panasonic	Nichicon	Nichicon
Capacitance	1200 µF	1200 µF	1200 µF	1200 µF
Voltage Rating	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Polarization	Polar	Polar	Polar	Polar
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Lifetime @ 105°C	2000 Hrs	3000 Hrs	5000 Hrs	5000 Hrs
Impedance	65 mOhms	68 mOhms	100 mOhms	68 mOhms
Size / Diameter	0.315" (8.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	1.024" (26.00 mm)	0.630" (16.00 mm)	0.846" (21.50 mm)	0.630" (16.00 mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

EEU-FC0J122 (Panasonic, Bulk Packaging): This substitute maintains Panasonic manufacturing continuity with active product status. It offers improved lifetime rating of 3000 hours at 105°C compared to the original 2000 hours. Physical dimensions differ, with a larger diameter (0.394" vs 0.315") and reduced height (0.630" vs 1.024"), requiring PCB layout verification. Bulk packaging differs from the original tape and box format. AEC-Q200 automotive qualification is maintained.

UPJ0J122MPD (Nichicon, Bulk Packaging): This part meets all core electrical specifications with extended 5000-hour lifetime at 105°C. Product status is "Not For New Designs," limiting suitability for new development. Physical dimensions are larger (0.394" diameter, 0.846" height). Impedance is higher at 100 mOhms. General purpose application rating differs from automotive qualification of the original part.

UPW0J122MPD6 (Nichicon, Bulk Packaging): This substitute provides 5000-hour lifetime at 105°C with impedance matching the original at 68 mOhms. Product status is "Not For New Designs." Physical dimensions are larger (0.394" diameter, 0.630" height). General purpose application rating differs from automotive qualification. Ripple current handling at 100 kHz matches the original specification.

For new designs requiring automotive qualification, EEU-FC0J122 is the preferred substitute. For applications where extended lifetime and general purpose ratings are acceptable, Nichicon alternatives provide longer operational life.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC0J122LB be directly replaced with EEU-FC0J122?

A: Electrical substitution is valid. Both parts share identical capacitance (1200 µF), voltage rating (6.3 V), tolerance (±20%), lead spacing (5.00 mm), and operating temperature range. Physical dimensions differ significantly: EEU-FC0J122 is larger in diameter (10.00 mm vs 8.00 mm) and shorter in height (16.00 mm vs 26.00 mm). PCB layout and mounting clearance must be verified before substitution.

Q: What is the difference between Panasonic and Nichicon substitutes?

A: Panasonic EEU-FC0J122 maintains active product status and AEC-Q200 automotive qualification. Nichicon parts (UPJ0J122MPD and UPW0J122MPD6) are marked "Not For New Designs" and carry general purpose application ratings rather than automotive qualification. All three meet core electrical specifications for capacitance, voltage, and tolerance.

Q: Why do substitute parts have different physical dimensions?

A: Aluminum electrolytic capacitor design allows multiple physical configurations to achieve the same electrical specifications. Larger diameter designs typically accommodate higher ripple current or extended lifetime ratings. Dimension differences require verification of available PCB space and mounting clearance.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, matching the original EEU-FC0J122LB specification.

Q: Which substitute is best for automotive applications?

A: EEU-FC0J122 (Panasonic) is the recommended substitute for automotive applications, as it maintains AEC-Q200 qualification and active product status. Nichicon alternatives lack automotive certification.

Q: Can I use a substitute with higher lifetime rating?

A: Yes. Substitutes with extended lifetime ratings (3000 or 5000 hours at 105°C) are electrically compatible and provide improved reliability margins. Physical dimensions and product status must still be evaluated for your specific application requirements.

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