Equivalent & Substitute Parts for Nichicon UAS2D151MHD

Part Overview

The Nichicon UAS2D151MHD is a 150 µF, 200 V aluminum electrolytic capacitor in radial, can package configuration. This component is classified as Active product status and is designed for general-purpose applications requiring polarized capacitive energy storage. The UAS series offers a 2000-hour lifetime rating at 105°C operating temperature.

Substitute parts are necessary when the original UAS2D151MHD becomes unavailable due to inventory constraints, supply chain disruptions, or when design requirements call for enhanced performance characteristics such as extended operational lifetime or improved ripple current handling capabilities.

Key Parameters

Parameter	Value	Unit
Capacitance	150	µF
Voltage - Rated	200	V
Tolerance	±20%	-
Lifetime @ Temperature	2000	Hrs @ 105°C
Operating Temperature Range	-40 to 105	°C
Polarization	Polar	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
Lead Spacing	7.50	mm
Size / Dimension	16.00	mm Dia
Height - Seated (Max)	27.00	mm
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the Nichicon UAS2D151MHD is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Capacitance: 150 µF (exact match required)
Voltage - Rated: 200 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Operating Temperature Range: -40°C to 105°C (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Allowable Variation Parameters:

Lifetime @ Temperature: May exceed 2000 Hrs @ 105°C
Ripple Current @ Low Frequency: May exceed 460 mA @ 120 Hz
Ripple Current @ High Frequency: May exceed 736 mA @ 10 kHz
Physical dimensions (diameter, height): Minor variations permitted within mechanical compatibility constraints
Lead Spacing: 7.50 mm (standard for this form factor)

Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (same manufacturer, different series) and Similar Manufacturer Parts (alternative manufacturers or enhanced specifications within the same electrical parameters).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Lifetime @ 105°C (Hrs)	Ripple Current @ 120 Hz (mA)	Ripple Current @ 10/100 kHz (A)	Size Dia (mm)	Height (mm)	Lead Spacing (mm)	Product Status	RoHS Status
UAS2D151MHD	Nichicon	UAS	150	200	2000	460	0.736	16.00	27.00	7.50	Active	ROHS3
UCS2D151MHD	Nichicon	UCS	150	200	10000	945	1.89	16.00	26.50	7.50	Active	ROHS3
UCY2D151MHD	Nichicon	UCY	150	200	12000	965	1.93	12.50	37.00	5.00	Active	ROHS3
UCY2D151MHD3	Nichicon	UCY	150	200	12000	945	1.89	16.00	26.50	7.50	Active	ROHS3
UCY2D151MHD6	Nichicon	UCY	150	200	12000	910	1.82	18.00	21.50	7.50	Active	ROHS3
URZ2D151MHD	Nichicon	URZ	150	200	1000	510	0.816	18.00	26.50	7.50	Active	ROHS3
EKXG201ELL151ML25S	Chemi-Con	KXG	150	200	10000	840	1.89	16.00	25.00	7.50	Active	ROHS3

Engineering Selection Recommendations

Direct Manufacturer Equivalent - Preferred Substitution:

UCS2D151MHD (Nichicon UCS series) is the primary direct equivalent. This part maintains identical electrical specifications (150 µF, 200 V, ±20% tolerance) while providing extended operational lifetime (10000 Hrs @ 105°C versus 2000 Hrs). Physical dimensions are nearly identical with only 0.5 mm height reduction. Both parts are ROHS3 compliant and Active product status. This substitution provides enhanced reliability without design modification.

UCY2D151MHD3 (Nichicon UCY series) is a secondary direct equivalent offering 12000-hour lifetime rating at 105°C. Physical dimensions match the original UAS2D151MHD exactly (16.00 mm diameter, 26.50 mm height, 7.50 mm lead spacing). ROHS3 compliant and Active product status. This substitution provides maximum operational lifetime extension.

Alternative Manufacturer Equivalent:

EKXG201ELL151ML25S (Chemi-Con KXG series) provides cross-manufacturer substitution with identical electrical parameters and 10000-hour lifetime rating. Physical dimensions are compatible (16.00 mm diameter, 25.00 mm height, 7.50 mm lead spacing). ROHS3 compliant and Active product status. This option is suitable when Nichicon parts are unavailable.

Not Recommended for Direct Substitution:

UCY2D151MHD exhibits different lead spacing (5.00 mm versus 7.50 mm) and significantly different physical dimensions (12.50 mm diameter, 37.00 mm height). PCB layout modification would be required.

URZ2D151MHD provides reduced lifetime rating (1000 Hrs @ 105°C) and lower ripple current specifications. This part represents a downgrade in performance characteristics and should only be considered when the original UAS2D151MHD specifications exceed application requirements.

Frequently Asked Questions (FAQ)

Q: Can UCY2D151MHD be used as a direct replacement for UAS2D151MHD?

A: No. While both parts share identical electrical specifications (150 µF, 200 V, ±20% tolerance), the UCY2D151MHD has different lead spacing (5.00 mm versus 7.50 mm) and different physical dimensions (12.50 mm diameter, 37.00 mm height versus 16.00 mm diameter, 27.00 mm height). PCB layout modification would be required. Use UCY2D151MHD3 instead, which maintains identical physical dimensions.

Q: What is the difference between UCS2D151MHD and UCY2D151MHD3?

A: Both are Nichicon products with identical electrical specifications and physical dimensions matching the original UAS2D151MHD. The primary difference is lifetime rating: UCS2D151MHD provides 10000 hours at 105°C, while UCY2D151MHD3 provides 12000 hours at 105°C. UCY2D151MHD3 offers extended operational life and is the preferred choice for applications requiring maximum reliability.

Q: Is EKXG201ELL151ML25S compatible with the original UAS2D151MHD?

A: Yes. The Chemi-Con EKXG201ELL151ML25S maintains all mandatory electrical parameters (150 µF, 200 V, ±20% tolerance, polar, through-hole radial can package) and physical compatibility (16.00 mm diameter, 7.50 mm lead spacing). Height is 25.00 mm versus 27.00 mm, which is within acceptable mechanical tolerance. This part is suitable for direct substitution when Nichicon equivalents are unavailable.

Q: Why would I choose URZ2D151MHD as a substitute?

A: URZ2D151MHD should only be selected when application requirements are less stringent than the original UAS2D151MHD specifications. This part provides reduced lifetime (1000 Hrs @ 105°C versus 2000 Hrs) and lower ripple current handling (510 mA @ 120 Hz versus 460 mA). It represents a performance downgrade and is not recommended for general substitution purposes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (UCS2D151MHD, UCY2D151MHD, UCY2D151MHD3, UCY2D151MHD6, URZ2D151MHD, and EKXG201ELL151ML25S) are ROHS3 compliant and maintain compliance with environmental regulations.

Q: What is the impact of using a substitute part with higher ripple current rating?

A: Substitute parts with higher ripple current ratings (such as UCS2D151MHD at 1.89 A @ 100 kHz versus UAS2D151MHD at 0.736 mA @ 10 kHz) provide enhanced thermal performance and reduced internal heating under AC stress conditions. This represents an improvement in operational margin and does not create compatibility issues.

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