EEU-FC1H390B Equivalent & Substitute Parts

Part Overview

The EEU-FC1H390B is a 39 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 1000 hours at 105°C and meets AEC-Q200 automotive standards. The part is currently active in production with cut tape packaging.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required, or when design requirements allow for components with enhanced specifications such as extended lifetime ratings or improved electrical characteristics.

Key Parameters

Parameter	Value
Capacitance	39 µF
Voltage Rating	50 V
Tolerance	±20%
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FC1H390B is determined by the following mandatory parameters:

Capacitance: 39 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Operating Temperature Range: -55°C to 105°C (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

The following parameters may vary between the main part and substitutes without affecting functional compatibility:

Packaging format (Cut Tape vs. Bulk)
Lead spacing (5.00 mm vs. 2.50 mm)
Physical height dimensions
Lifetime rating at temperature (1000 Hrs vs. 2000 Hrs)
Ripple current specifications
Impedance values
Manufacturer identity
Product status (Active vs. Obsolete)
Application classification (Automotive vs. General Purpose)

Parameter Comparison

Parameter	EEU-FC1H390B (Main)	EEU-FC1H390	ELXY500ELL390MFB5D	UPJ1H390MED
Manufacturer	Panasonic	Panasonic	Chemi-Con	Nichicon
Capacitance	39 µF	39 µF	39 µF	39 µF
Voltage Rating	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Lifetime @ 105°C	1000 Hrs	1000 Hrs	2000 Hrs	2000 Hrs
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
Lead Spacing	5.00 mm	2.50 mm	2.50 mm	2.50 mm
Size Diameter	6.30 mm	6.30 mm	6.30 mm	6.30 mm
Height (Max)	14.70 mm	12.20 mm	13.00 mm	12.00 mm
Impedance	600 mOhms	600 mOhms	540 mOhms	500 mOhms
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Obsolete
Ratings	AEC-Q200	AEC-Q200	AEC-Q200	-

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements for direct replacement of the EEU-FC1H390B. Selection should be based on the following criteria:

For Active Production Applications: EEU-FC1H390 (Panasonic, Bulk packaging) and ELXY500ELL390MFB5D (Chemi-Con) are preferred due to active product status and AEC-Q200 compliance. The ELXY500ELL390MFB5D offers extended lifetime (2000 Hrs @ 105°C) compared to the main part.

For Automotive Compliance: EEU-FC1H390B and EEU-FC1H390 maintain AEC-Q200 certification. ELXY500ELL390MFB5D also carries AEC-Q200 rating. UPJ1H390MED does not list AEC-Q200 compliance and is obsolete; use only if existing inventory constraints require it.

For PCB Layout Considerations: Lead spacing differs between parts. The main part (EEU-FC1H390B) has 5.00 mm spacing, while substitutes have 2.50 mm spacing. Verify PCB footprint compatibility before selection.

For Extended Reliability: ELXY500ELL390MFB5D and UPJ1H390MED provide 2000-hour lifetime ratings, offering improved reliability margin over the 1000-hour rating of the main part.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1H390 replace EEU-FC1H390B directly?

A: Yes. Both parts are identical in electrical specifications (39 µF, 50 V, ±20%, 1000 Hrs @ 105°C, AEC-Q200). The difference is packaging format: EEU-FC1H390B is cut tape; EEU-FC1H390 is bulk. Lead spacing differs (5.00 mm vs. 2.50 mm), requiring PCB footprint verification.

Q: Is ELXY500ELL390MFB5D compatible with EEU-FC1H390B?

A: Yes. All core electrical parameters match (39 µF, 50 V, ±20%, -55°C to 105°C, Polar, ROHS3). ELXY500ELL390MFB5D is manufactured by Chemi-Con and offers extended lifetime (2000 Hrs @ 105°C). Lead spacing is 2.50 mm; verify PCB compatibility.

Q: Why is UPJ1H390MED listed as obsolete?

A: UPJ1H390MED is marked obsolete by Nichicon. It remains electrically compatible but lacks current AEC-Q200 certification documentation. Use only when existing inventory is available and automotive compliance is not required.

Q: What is the impact of different lead spacing?

A: Lead spacing affects PCB footprint design. The main part uses 5.00 mm spacing; substitutes use 2.50 mm. Physical board layout must accommodate the selected lead spacing. Verify hole positions and trace routing before assembly.

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

A: Yes. ELXY500ELL390MFB5D and UPJ1H390MED both offer 2000-hour lifetime ratings versus 1000 hours for the main part. This represents improved reliability margin and is functionally compatible.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

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