SMG50VB331M10X16LL Equivalent & Substitute Parts

Part Overview

The SMG50VB331M10X16LL is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Chemi-Con. This component is classified as obsolete and no longer in active production. The SMG series has been discontinued, making equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support. Substitute parts must maintain identical electrical specifications and mechanical dimensions to ensure direct replacement without circuit redesign.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Mounting Type	Through Hole Radial
Package Type	Radial, Can
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the SMG50VB331M10X16LL is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Diameter: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Package Type: Radial, Can (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
Lifetime: 2000 Hrs @ 85°C (exact match required)

Acceptable Variation Parameters:

Height: Seated height may vary within mechanical envelope constraints
Ripple Current: Specifications may differ between manufacturers while maintaining functional equivalence
ESR: Values may vary between manufacturers

All substitute parts listed below meet these critical matching parameters and are therefore direct electrical and mechanical equivalents.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 85°C	Lead Spacing	Diameter	Height (Max)	Product Status	RoHS Status
SMG50VB331M10X16LL	Chemi-Con	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Obsolete	Non-compliant
UFW1H331MPD	Nichicon	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Not For New Designs	ROHS3 Compliant
UKW1H331MPD	Nichicon	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Not For New Designs	ROHS3 Compliant
ECA-1HM331	Panasonic Electronic Components	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.669" (17.00 mm)	Active	ROHS3 Compliant
SK331M050ST	Cornell Dubilier Electronics (CDE)	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.906" (23.00 mm)	Active	ROHS3 Compliant
UVR1H331MPD	Nichicon	330 µF	50 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Minimum Height Constraint):

UFW1H331MPD and UKW1H331MPD are preferred substitutes when the original 0.630" (16.00 mm) seated height must be maintained. Both parts are manufactured by Nichicon, meet ROHS3 compliance, and provide identical electrical specifications. These parts are classified as "Not For New Designs" but remain suitable for legacy system repair and maintenance applications.

For Active Production Applications:

ECA-1HM331 (Panasonic Electronic Components) is the only active-status substitute available. This part provides full electrical equivalence with a slightly increased seated height of 0.669" (17.00 mm). ROHS3 compliance and active production status make this part suitable for ongoing support and new legacy-compatible designs.

For Applications with Height Flexibility:

SK331M050ST (Cornell Dubilier Electronics) is an active-status alternative with the highest seated height of 0.906" (23.00 mm). This part is suitable only when mechanical envelope constraints permit the additional height. ROHS3 compliance and active production status support long-term availability.

For Ripple Current Performance:

UVR1H331MPD (Nichicon) offers the highest ripple current specifications at 590 mA @ 120 Hz and 885 mA @ 10 kHz, providing performance margin in applications with elevated AC stress. This part maintains the original operating temperature range and lifetime rating.

Frequently Asked Questions (FAQ)

Q: Can SMG50VB331M10X16LL be replaced with any of the listed substitutes?

A: All listed substitutes meet the critical electrical and mechanical parameters required for direct replacement. However, physical height differences must be verified against PCB layout constraints. UFW1H331MPD and UKW1H331MPD maintain the original 0.630" height. ECA-1HM331 and UVR1H331MPD have slightly increased heights. SK331M050ST has significantly increased height and requires clearance verification.

Q: What is the difference between "Upgrade" and "Similar" substitute classifications?

A: "Upgrade" substitutes (UFW1H331MPD, UKW1H331MPD) are direct functional equivalents with improved compliance status. "Similar" substitutes (ECA-1HM331, SK331M050ST, UVR1H331MPD) meet all critical parameters but may have different product status or availability. All are electrically equivalent.

Q: Are RoHS compliance differences significant for substitution?

A: The original SMG50VB331M10X16LL is RoHS non-compliant. All substitutes are ROHS3 compliant, which is advantageous for environmental compliance and long-term regulatory alignment. This does not affect electrical or mechanical compatibility.

Q: Can height variation affect circuit performance?

A: Height variation does not affect electrical performance. However, increased height may create mechanical interference with adjacent components or enclosure constraints. Verify PCB layout clearance before substitution, particularly with SK331M050ST (0.906" height).

Q: Which substitute offers the best long-term availability?

A: ECA-1HM331 (Panasonic) and SK331M050ST (Cornell Dubilier) are classified as "Active" products, indicating ongoing production and long-term availability. UFW1H331MPD, UKW1H331MPD, and UVR1H331MPD are "Not For New Designs" but remain available for legacy support.

Q: Are ripple current differences important for my application?

A: Ripple current specifications vary between manufacturers. UFW1H331MPD and UKW1H331MPD specify 570 mA @ 120 Hz. UVR1H331MPD specifies 590 mA @ 120 Hz. The original SMG50VB331M10X16LL specifies 585 mA @ 120 Hz. Select based on your circuit's actual ripple current requirements; higher-rated parts provide performance margin.

Q: Can I use these substitutes in audio applications?

A: UFW1H331MPD and UKW1H331MPD are specifically rated for audio applications. ECA-1HM331, SK331M050ST, and UVR1H331MPD are rated for general purpose applications. Audio-rated parts are suitable for general purpose use; general purpose parts are suitable for audio applications when electrical specifications are met.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message