Nichicon UAS2D331MHD Equivalent & Substitute Parts

Part Overview

The Nichicon UAS2D331MHD is a 330 µF, 200 V aluminum electrolytic capacitor in radial, can package rated for 2000 hours at 105°C. This component is classified as Active product status and is suitable for general purpose applications requiring through-hole mounting with 7.50 mm lead spacing.

Equivalent and substitute parts are necessary when the original component becomes unavailable, when design requirements demand extended operational lifetime, or when higher voltage ratings are required for enhanced circuit reliability.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	7.50 mm
Case Diameter	18.00 mm
Height (Seated Max)	42.00 mm
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution relationships for the UAS2D331MHD are determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)
Voltage Rating: 200 V minimum (higher ratings acceptable for direct substitution)
Lead Spacing: 7.50 mm (mechanical compatibility)
Case Diameter: 18.00 mm (physical fit requirement)
Mounting Type: Through Hole (PCB compatibility)
Polarization: Polar (functional requirement)

Substitute parts are grouped into three categories:

Upgrade Substitutes: Higher voltage rating (250 V) with extended lifetime, providing enhanced reliability margin
Similar Substitutes: Identical electrical specifications (330 µF, 200 V) with improved lifetime ratings and higher ripple current handling
Parametric Equivalents: Identical electrical specifications with legacy or restricted product status

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Lifetime @ 105°C	Case Dia (mm)	Height (mm)	Lead Spacing (mm)	Product Status	RoHS Status
UAS2D331MHD	UAS	330 µF	200 V	2000 Hrs	18.00	42.00	7.50	Active	ROHS3 Compliant
UCY2E331MHD9	UCY	330 µF	250 V	12000 Hrs	18.00	41.50	7.50	Active	ROHS3 Compliant
UCS2D331MHD	UCS	330 µF	200 V	10000 Hrs	18.00	37.00	7.50	Active	ROHS3 Compliant
UCY2D331MHD	UCY	330 µF	200 V	12000 Hrs	16.00	41.50	7.50	Active	ROHS3 Compliant
UCY2D331MHD6	UCY	330 µF	200 V	12000 Hrs	18.00	33.00	7.50	Active	ROHS3 Compliant
UPW2D331MRD	UPW	330 µF	200 V	8000 Hrs	22.00	40.00	10.00	Obsolete	ROHS3 Compliant
UVY2D331MHD	UVY	330 µF	200 V	2000 Hrs	18.00	42.00	7.50	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

For Active Product Designs:

UCY2E331MHD9: Select when circuit design permits 250 V rated component. Provides 6x lifetime extension (12000 vs 2000 hours) and 2x ripple current capacity at high frequency. Active product status supports long-term availability.
UCS2D331MHD: Select for 200 V applications requiring extended lifetime without voltage rating change. Provides 5x lifetime extension with identical voltage specification. Active status and compact height (37.00 mm) offer space optimization.
UCY2D331MHD6: Select for 200 V applications with height constraints. Provides 6x lifetime extension with shortest seated height (33.00 mm). Active status and higher ripple current capacity support demanding applications.

For Maintenance and Repair:

UCY2D331MHD: Acceptable for field replacement in 200 V circuits. Active status and 12000-hour lifetime provide reliability improvement over original specification. Note: Case diameter is 16.00 mm (vs 18.00 mm original).

Not Recommended for New Designs:

UPW2D331MRD: Obsolete product status. Lead spacing (10.00 mm) and case diameter (22.00 mm) differ from original, requiring PCB redesign.
UVY2D331MHD: Not For New Designs status. Equivalent electrical performance to original but restricted for new applications.

Frequently Asked Questions (FAQ)

Q: Can UCY2E331MHD9 replace UAS2D331MHD directly on the PCB?

A: Yes. Both components share identical lead spacing (7.50 mm), case diameter (18.00 mm), and through-hole mounting type. The 250 V rating is compatible with 200 V circuit requirements. Height difference is minimal (41.50 mm vs 42.00 mm).

Q: What is the primary advantage of UCS2D331MHD over the original UAS2D331MHD?

A: UCS2D331MHD extends operational lifetime from 2000 hours to 10000 hours at 105°C while maintaining identical 200 V voltage rating and 330 µF capacitance. Seated height is reduced to 37.00 mm, enabling compact designs.

Q: Why does UCY2D331MHD have a different case diameter (16.00 mm)?

A: The UCY2D331MHD represents a different physical package variant within the same electrical specification (330 µF, 200 V). The 16.00 mm diameter may not fit existing PCB footprints designed for 18.00 mm diameter components.

Q: Is UPW2D331MRD suitable for replacement?

A: UPW2D331MRD is classified as Obsolete and features different mechanical specifications (10.00 mm lead spacing, 22.00 mm case diameter). PCB redesign is required for implementation. Not recommended for new applications.

Q: What does "Not For New Designs" mean for UVY2D331MHD?

A: This product status indicates the manufacturer restricts use in new circuit designs. While electrically equivalent to UAS2D331MHD, it should not be selected for new development. Active alternatives (UCS2D331MHD, UCY2D331MHD6, UCY2E331MHD9) are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification, matching the original UAS2D331MHD compliance status.

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