Nichicon USF1A151MDD Equivalent & Substitute Parts

Part Overview

The Nichicon USF1A151MDD is a 150 µF, 10 V aluminum electrolytic capacitor in radial, can package with through-hole mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The USF series offers general-purpose performance with 1000 hours lifetime at 105°C and operates across the temperature range of -55°C to 105°C. Substitution is required to ensure design continuity and component availability.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	1000 Hrs
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the USF1A151MDD is determined by the following critical parameters:

Capacitance Value: 150 µF (exact match required)
Voltage Rating: Minimum 10 V (equal or higher voltage rating acceptable)
Tolerance: ±20% (standard tolerance maintained)
Mounting Type: Through Hole (mechanical compatibility)
Package Configuration: Radial, Can (form factor compatibility)
Polarization: Polar (electrical requirement)
Operating Temperature: -55°C to 105°C (functional range)
RoHS Compliance: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (10 V Rating, Through Hole) Parts with identical voltage rating and through-hole mounting, differing primarily in series designation, lifetime rating, and lead spacing.

Category B - Higher Voltage Alternatives (25 V Rating) Parts with elevated voltage rating suitable for applications where higher voltage margin is acceptable, with improved lifetime characteristics.

Category C - Surface Mount Alternative SMD variant maintaining electrical specifications with different form factor for surface-mount applications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Mounting Type	Lead Spacing	Height (Max)	Product Status	Impedance
USF1A151MDD	Nichicon	150 µF	10 V	±20%	1000 Hrs	Through Hole	0.138" (4.60mm)	0.315" (8.00mm)	Obsolete	500 mOhms
UPW1A151MED	Nichicon	150 µF	10 V	±20%	2000 Hrs	Through Hole	0.098" (2.50mm)	0.433" (11.00mm)	Obsolete	250 mOhms
UPV1A151MGD	Nichicon	150 µF	10 V	±20%	5000 Hrs	Through Hole	0.098" (2.50mm)	0.492" (12.50mm)	Obsolete	600 mOhms
UPM1E151MPD	Nichicon	150 µF	25 V	±20%	3000 Hrs	Through Hole	0.138" (4.60mm)	0.512" (13.00mm)	Not For New Designs	160 mOhms
EEU-FC1A151	Panasonic	150 µF	10 V	±20%	1000 Hrs	Through Hole	0.098" (2.50mm)	0.480" (12.20mm)	Active	350 mOhms
EEU-FC1A151B	Panasonic	150 µF	10 V	±20%	1000 Hrs	Through Hole	0.197" (5.00mm)	0.579" (14.70mm)	Active	350 mOhms
EEU-FC1A151H	Panasonic	150 µF	10 V	±20%	1000 Hrs	Through Hole	0.098" (2.50mm)	0.480" (12.20mm)	Active	350 mOhms
UWT1A151MCL1GS	Nichicon	150 µF	10 V	±20%	1000 Hrs	Surface Mount	N/A	0.228" (5.80mm)	Active	N/A

Engineering Selection Recommendations

For Direct Through-Hole Replacement (Preferred)

EEU-FC1A151H (Panasonic) and EEU-FC1A151 (Panasonic) are active products with AEC-Q200 automotive qualification. Both maintain 150 µF capacitance, 10 V rating, ±20% tolerance, and 1000 hours lifetime at 105°C. These parts provide equivalent electrical performance with active product status, ensuring long-term availability and supply chain stability.

For Extended Lifetime Applications

UPV1A151MGD (Nichicon) offers 5000 hours lifetime at 105°C while maintaining all core electrical parameters. This part is suitable for applications requiring enhanced reliability, though it carries obsolete product status.

For Higher Voltage Margin

UPM1E151MPD (Nichicon) provides 25 V rating with improved impedance (160 mOhms) and extended 3000 hours lifetime. This part is suitable for applications where voltage derating is beneficial, though it is classified as "Not For New Designs."

For Surface Mount Applications

UWT1A151MCL1GS (Nichicon) is an active SMD variant with identical electrical specifications (150 µF, 10 V, 1000 Hrs @ 105°C) for surface-mount PCB assembly. This part is available in Tape & Reel packaging with high inventory levels.

Frequently Asked Questions (FAQ)

Q: Can I substitute the USF1A151MDD with a higher voltage rated capacitor?

A: Yes. A 25 V rated capacitor (such as UPM1E151MPD) is electrically compatible with a 10 V application. Higher voltage ratings provide additional safety margin and are acceptable substitutes provided all other parameters (capacitance, tolerance, temperature range, mounting type) remain compatible.

Q: What is the impact of different lead spacing on substitution?

A: Lead spacing affects PCB layout compatibility. The USF1A151MDD has 0.138" (4.60mm) lead spacing. Substitutes with different lead spacing (0.098" or 0.197") require PCB modification. Verify PCB hole pattern before selecting a substitute with different lead spacing.

Q: Are Panasonic EEU-FC series parts direct equivalents?

A: Yes. EEU-FC1A151, EEU-FC1A151B, and EEU-FC1A151H are direct electrical equivalents with 150 µF, 10 V, ±20% tolerance, and 1000 hours lifetime at 105°C. These parts are active products with AEC-Q200 automotive qualification. Lead spacing and height differ; verify PCB compatibility before substitution.

Q: Can I use the surface-mount UWT1A151MCL1GS as a substitute?

A: No, not as a direct replacement. The UWT1A151MCL1GS is a surface-mount component requiring different PCB assembly processes and land patterns. Use this part only if your design supports SMD assembly.

Q: What is the difference between obsolete and active product status?

A: Active products (EEU-FC series, UWT1A151MCL1GS) have guaranteed long-term availability and supply chain support. Obsolete products (USF1A151MDD, UPW1A151MED, UPV1A151MGD) have limited or no future availability. For new designs, select active products.

Q: Does impedance affect substitution compatibility?

A: Impedance differences (ranging from 160 mOhms to 600 mOhms across substitutes) may affect ripple current handling and circuit performance in high-frequency applications. Verify impedance specifications against circuit requirements before substitution.

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