Equivalent & Substitute Parts for UHW1H331MPD1TD

Part Overview

The Nichicon UHW1H331MPD1TD is a 330 µF, 50 V aluminum electrolytic capacitor in radial configuration with a 10,000-hour lifetime rating at 105°C. This part carries a "Not For New Designs" status, making identification of active equivalent alternatives essential for ongoing production and maintenance applications. The UHW series represents legacy technology; however, parametric equivalents remain available from active product lines.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage Rating	50 V
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.866" (22.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UHW1H331MPD1TD is determined by strict parametric matching across the following criteria:

Capacitance value: 330 µF (exact match required)
Voltage rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime rating: 10,000 Hrs @ 105°C (exact match required)
Operating temperature range: -40°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)
Lead spacing: 0.197" (5.00 mm) (exact match required)
Case diameter: 0.394" (10.00 mm) (exact match required)
Height: 0.866" (22.00 mm) (exact match required)
Mounting type: Through Hole (exact match required)
Package type: Radial, Can (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)

All three substitute parts meet these criteria and are therefore direct parametric equivalents suitable for replacement in applications currently using the UHW1H331MPD1TD.

Parameter Comparison

Parameter	UHW1H331MPD1TD (Nichicon)	50ZLH330MEFCT810X20 (Rubycon)	EEU-EB1H331B (Panasonic)	EEU-FS1H331B (Panasonic)
Capacitance	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage Rating	50 V	50 V	50 V	50 V
Lifetime @ 105°C	10,000 Hrs	10,000 Hrs	10,000 Hrs	10,000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Seated Max)	0.866" (22.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active

Engineering Selection Recommendations

All three substitute parts are parametrically equivalent to the UHW1H331MPD1TD and meet identical electrical and mechanical specifications. Selection among these alternatives should be based on the following factors:

Product Status: The Rubycon 50ZLH330MEFCT810X20, Panasonic EEU-EB1H331B, and Panasonic EEU-FS1H331B are all classified as Active products, ensuring long-term availability and continued manufacturer support compared to the legacy UHW series.

Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original part.

Availability: Current inventory levels are 1,050 units (Rubycon), 2,357 units (Panasonic EB-A series), and 3,492 units (Panasonic FS-A series), providing multiple sourcing options.

Packaging: The Rubycon part is supplied in Tape & Box format, while both Panasonic alternatives are supplied in Cut Tape format. Packaging selection should align with procurement and assembly workflow requirements.

Frequently Asked Questions (FAQ)

Q: Can the EEU-FS1H331B replace the UHW1H331MPD1TD directly on the PCB?

A: Yes. The EEU-FS1H331B matches all critical parameters including capacitance (330 µF), voltage rating (50 V), lead spacing (5.00 mm), case diameter (10.00 mm), and height (22.00 mm). No PCB layout modifications are required.

Q: What is the difference between the Panasonic EEU-EB1H331B and EEU-FS1H331B?

A: Both parts are parametrically equivalent with identical electrical ratings and physical dimensions. The FS-A series exhibits higher ripple current capability (1.323 A @ 120 Hz and 1.89 A @ 100 kHz) compared to the EB-A series (293 mA @ 120 Hz and 380.9 mA @ 100 kHz). Selection depends on application ripple current requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The Rubycon 50ZLH330MEFCT810X20 and both Panasonic alternatives (EEU-EB1H331B and EEU-FS1H331B) are ROHS3 compliant, matching the compliance status of the original UHW1H331MPD1TD.

Q: What is the difference between Cut Tape and Tape & Box packaging?

A: Cut Tape (CT) packaging supplies individual components on tape segments suitable for small-quantity orders and manual assembly. Tape & Box (TB) packaging supplies full reels in protective boxes, optimized for high-volume automated assembly. Both formats contain identical components; packaging selection depends on production volume and assembly methodology.

Q: Why is the UHW1H331MPD1TD marked "Not For New Designs"?

A: This designation indicates the part is in legacy status and no longer recommended for new product development. Active alternatives from Rubycon and Panasonic provide equivalent performance with ongoing manufacturer support and extended product lifecycle assurance.

Q: Can I mix substitute parts from different manufacturers in the same production run?

A: Yes. All three substitute parts meet identical parametric specifications and are mechanically and electrically interchangeable. Multi-source qualification is permissible when all parts satisfy the specified electrical and mechanical requirements.

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