URU1H331MHD1TO Equivalent & Substitute Parts

Part Overview

The URU1H331MHD1TO is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 2000 hours at 85°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00 mm)
Package Diameter	0.492" (12.50 mm)
Package Height	0.551" (14.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can

Substitute Part Grouping Explanation

Substitution for the URU1H331MHD1TO is determined by the following critical parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Physical Dimensions: 0.492" Dia × 0.551" Height (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

The substitute parts identified—URS1H331MHD1TO and URZ1H331MHD1TO—meet all critical electrical and mechanical parameters. Variations in lifetime ratings and operating temperature ranges are permitted within the scope of general-purpose applications, provided the substitute meets or exceeds the minimum requirements of the original design.

Parameter Comparison

Parameter	URU1H331MHD1TO	URS1H331MHD1TO	URZ1H331MHD1TO
Manufacturer	Nichicon	Nichicon	Nichicon
Series	URU	URS	URZ
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 85°C	1000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 105°C
Ripple Current @ 120 Hz	530 mA	530 mA	370 mA
Ripple Current @ 10 kHz	795 mA	795 mA	555 mA
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Package Diameter	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)
Package Height	0.551" (14.00 mm)	0.551" (14.00 mm)	0.551" (14.00 mm)
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

URS1H331MHD1TO is the primary parametric equivalent. It maintains identical electrical performance (2000 Hrs @ 85°C, 530 mA ripple current @ 120 Hz, 795 mA @ 10 kHz) and identical operating temperature range (-40°C ~ 85°C). The part is currently active and ROHS3 compliant, making it the direct replacement for the obsolete URU1H331MHD1TO.

URZ1H331MHD1TO is a functional substitute with extended operating temperature range (-55°C ~ 105°C) and higher temperature lifetime rating (1000 Hrs @ 105°C). However, this part exhibits reduced ripple current specifications (370 mA @ 120 Hz, 555 mA @ 10 kHz). Selection of URZ1H331MHD1TO is appropriate only when the application requires the extended temperature range and can accommodate the lower ripple current ratings. The part is active and ROHS3 compliant.

Both substitute parts are manufactured by Nichicon and share identical physical dimensions and lead spacing, ensuring direct PCB compatibility with the original URU1H331MHD1TO design.

Frequently Asked Questions (FAQ)

Q: Can URS1H331MHD1TO be used as a direct replacement for URU1H331MHD1TO?

A: Yes. URS1H331MHD1TO is a parametric equivalent with identical capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, ripple current specifications, and physical dimensions. It is electrically and mechanically interchangeable.

Q: What is the difference between URS1H331MHD1TO and URZ1H331MHD1TO?

A: Both parts share identical capacitance, voltage, tolerance, and physical dimensions. The key differences are: URS1H331MHD1TO maintains 2000 Hrs @ 85°C with ripple current of 530 mA @ 120 Hz and 795 mA @ 10 kHz; URZ1H331MHD1TO provides extended temperature range (-55°C ~ 105°C) with 1000 Hrs @ 105°C but reduced ripple current of 370 mA @ 120 Hz and 555 mA @ 10 kHz.

Q: Can URZ1H331MHD1TO replace URU1H331MHD1TO in all applications?

A: URZ1H331MHD1TO is mechanically compatible but has lower ripple current ratings. It is suitable only for applications where the reduced ripple current does not exceed design requirements and where the extended temperature range provides operational benefit.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both URS1H331MHD1TO and URZ1H331MHD1TO are ROHS3 compliant.

Q: Will the substitute parts fit the same PCB footprint?

A: Yes. All three parts—URU1H331MHD1TO, URS1H331MHD1TO, and URZ1H331MHD1TO—have identical lead spacing (0.197" / 5.00 mm), package diameter (0.492" / 12.50 mm), and height (0.551" / 14.00 mm), ensuring direct PCB compatibility.

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