UPW1H331MPH Equivalent & Substitute Parts

Part Overview

The UPW1H331MPH is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making direct replacement necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 5000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and ripple current handling.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)

Substitute Part Grouping Explanation

Substitution for the UPW1H331MPH is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (50 V), tolerance (±20%), polarization (polar), mounting type (through hole), and package configuration (radial, can). Lead spacing and physical dimensions must remain compatible with existing PCB layouts. Lifetime rating and operating temperature range must meet or exceed the original specification.

The identified substitutes are grouped as follows:

Direct Manufacturer Substitute: UPW1H331MPD maintains identical electrical specifications and physical dimensions while offering improved product status and RoHS3 compliance.

Similar Manufacturer Substitute: EEU-FC1H331 from Panasonic Electronic Components meets all core electrical parameters with enhanced ripple current performance and active product status, though with slightly larger physical dimensions (0.492" diameter versus 0.394").

Parameter Comparison

Parameter	UPW1H331MPH	UPW1H331MPD	EEU-FC1H331
Manufacturer	Nichicon	Nichicon	Panasonic Electronic Components
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	5000 Hrs	5000 Hrs	5000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size Diameter	0.394" (10.00mm)	0.394" (10.00mm)	0.492" (12.50mm)
Height - Seated (Max)	0.787" (20.00mm)	0.787" (20.00mm)	0.787" (20.00mm)
Impedance	90 mOhms	90 mOhms	63 mOhms
Ripple Current @ 120 Hz	669.5 mA	669.5 mA	962 mA
Ripple Current @ 100 kHz	1.03 A	1.03 A	1.48 A
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Ratings	-	-	AEC-Q200

Engineering Selection Recommendations

For Direct Replacement: UPW1H331MPD is the primary substitute, offering identical electrical and physical specifications to the UPW1H331MPH. This part maintains Nichicon series continuity and is suitable for existing designs where component footprint constraints are critical. The part carries ROHS3 compliance and improved product status classification.

For New Designs: EEU-FC1H331 is the recommended choice. This Panasonic part carries active product status, ROHS3 compliance, and AEC-Q200 automotive qualification. Enhanced ripple current performance (962 mA @ 120 Hz and 1.48 A @ 100 kHz) and lower impedance (63 mOhms) provide superior electrical characteristics. The slightly larger diameter (0.492" versus 0.394") requires PCB layout verification but does not affect lead spacing or height compatibility.

For Legacy Systems: UPW1H331MPD maintains backward compatibility with existing UPW1H331MPH installations while providing improved compliance status.

Frequently Asked Questions (FAQ)

Q: Can UPW1H331MPD be used as a direct drop-in replacement for UPW1H331MPH?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (50 V), tolerance (±20%), lead spacing (5.00mm), and physical dimensions (0.394" diameter, 0.787" height). No PCB modifications are required.

Q: Is EEU-FC1H331 compatible with UPW1H331MPH applications?

A: Electrical compatibility is confirmed across all core parameters: capacitance, voltage rating, tolerance, temperature range, and lifetime rating. The EEU-FC1H331 has a larger diameter (0.492" versus 0.394"), requiring verification that the PCB layout accommodates this dimension. Lead spacing and height remain identical.

Q: What is the difference in ripple current handling between these parts?

A: The EEU-FC1H331 provides higher ripple current capacity: 962 mA @ 120 Hz and 1.48 A @ 100 kHz, compared to 669.5 mA @ 120 Hz and 1.03 A @ 100 kHz for the UPW1H331MPH and UPW1H331MPD. This results from lower impedance (63 mOhms versus 90 mOhms).

Q: Why is EEU-FC1H331 recommended for new designs?

A: The EEU-FC1H331 carries active product status, ROHS3 compliance, and AEC-Q200 automotive qualification. These certifications ensure long-term availability and compliance with current regulatory standards, making it suitable for production designs with extended lifecycle requirements.

Q: Are there packaging differences between these substitutes?

A: UPW1H331MPH and UPW1H331MPD are supplied in different packaging formats (the original in standard packaging, the substitute in bulk), but the component itself is identical. EEU-FC1H331 is supplied in bulk packaging. All three use radial, can package configuration suitable for through-hole mounting.

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