SMG6.3VB331M6X11LL Equivalent & Substitute Parts

Part Overview

The SMG6.3VB331M6X11LL is a 330 µF, 6.3 V aluminum electrolytic capacitor in radial, through-hole configuration manufactured by Chemi-Con. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and design updates. The part serves general-purpose applications requiring stable capacitance and reliable performance across the -40°C to 85°C operating range.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	6.3 V
Tolerance	±20%
ESR @ 120 Hz	1.708 Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	270 mA
Ripple Current @ 100 kHz	405 mA
Lead Spacing	0.098" (2.50 mm)
Case Diameter	0.248" (6.30 mm)
Height	0.433" (11.00 mm)
Mounting Type	Through Hole
Package	Radial, Can
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

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

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 6.3 V minimum (higher ratings acceptable as upgrades)
Tolerance: ±20% (matching or tighter tolerance acceptable)
Lead Spacing: 0.098" (2.50 mm) (exact match required for PCB compatibility)
Case Diameter: 0.248" (6.30 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package: Radial, Can (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: Must encompass or exceed -40°C to 85°C
Ripple Current Ratings: Must meet or exceed specified values at rated frequencies
Lifetime @ Temperature: Extended lifetime acceptable; reduced lifetime not acceptable
ESR: Lower ESR values indicate improved performance; higher values acceptable if within application tolerance

Substitute parts are grouped into three categories:

Upgrade Parts: Active status, improved specifications (higher temperature rating, extended lifetime, or higher voltage rating), RoHS3 compliant.

Similar Parts: Active or obsolete status, equivalent electrical specifications, same physical dimensions, RoHS3 compliant.

Direct Parts: Active status, equivalent or superior specifications, direct functional replacement capability.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120 Hz	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Height	Product Status	RoHS Status
SMG6.3VB331M6X11LL	Chemi-Con	330 µF	6.3 V	±20%	1.708 Ohm	2000 Hrs @ 85°C	-40°C ~ 85°C	270 mA	405 mA	0.433" (11.00 mm)	Obsolete	Non-compliant
EKZE6R3ELL331MF11D	Chemi-Con	330 µF	6.3 V	±20%	—	2000 Hrs @ 105°C	-40°C ~ 105°C	202.5 mA	405 mA	0.433" (11.00 mm)	Active	ROHS3 Compliant
ESMG6R3ELL331MF11D	Chemi-Con	330 µF	6.3 V	±20%	—	2000 Hrs @ 85°C	-40°C ~ 85°C	270 mA	405 mA	0.492" (12.50 mm)	Active	ROHS3 Compliant
337SAK6R3M	Cornell Dubilier / Illinois Capacitor	330 µF	6.3 V	±20%	1.407 Ohm	2000 Hrs @ 85°C	-40°C ~ 85°C	250 mA	375 mA	0.413" (10.50 mm)	Active	ROHS3 Compliant
SEK331M6R3ST	Cornell Dubilier Electronics (CDE)	330 µF	6.3 V	±20%	1.05 Ohm	2000 Hrs @ 105°C	-55°C ~ 105°C	200 mA	240 mA	0.453" (11.50 mm)	Active	ROHS3 Compliant
UFW0J331MED	Nichicon	330 µF	6.3 V	±20%	—	2000 Hrs @ 85°C	-40°C ~ 85°C	265 mA	397.5 mA	0.433" (11.00 mm)	Obsolete	ROHS3 Compliant
UFW1A331MED	Nichicon	330 µF	10 V	±20%	—	2000 Hrs @ 85°C	-40°C ~ 85°C	270 mA	405 mA	0.433" (11.00 mm)	Obsolete	ROHS3 Compliant
UHE0J331MED	Nichicon	330 µF	6.3 V	±20%	—	4000 Hrs @ 105°C	-40°C ~ 105°C	238 mA	340 mA	0.433" (11.00 mm)	Obsolete	ROHS3 Compliant
UKW1A331MED	Nichicon	330 µF	10 V	±20%	—	2000 Hrs @ 85°C	-40°C ~ 85°C	270 mA	405 mA	0.433" (11.00 mm)	Obsolete	ROHS3 Compliant
UPW0J331MED	Nichicon	330 µF	6.3 V	±20%	—	2000 Hrs @ 105°C	-55°C ~ 105°C	188.5 mA	290 mA	0.433" (11.00 mm)	Obsolete	ROHS3 Compliant
ECA-0JM331	Panasonic Electronic Components	330 µF	6.3 V	±20%	—	2000 Hrs @ 85°C	-40°C ~ 85°C	—	510 mA	0.480" (12.20 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

For New Designs and Active Production:

EKZE6R3ELL331MF11D (Chemi-Con) is the primary recommended upgrade. This part maintains manufacturer continuity with the original SMG6.3VB331M6X11LL, offers active product status, achieves ROHS3 compliance, and extends the operating temperature range to 105°C with equivalent 2000-hour lifetime at the elevated temperature. Physical dimensions and lead spacing remain identical, ensuring direct PCB compatibility.

For Extended Temperature Applications:

SEK331M6R3ST (Cornell Dubilier Electronics) provides the widest operating temperature range (-55°C to 105°C) and lowest ESR (1.05 Ohm @ 120 Hz), making it suitable for demanding thermal environments. This part is active and ROHS3 compliant. Height variation (0.453" vs. 0.433") requires PCB layout verification.

UHE0J331MED (Nichicon) offers extended lifetime (4000 Hrs @ 105°C) with matching physical dimensions and identical height to the original part. This part is obsolete but ROHS3 compliant, suitable for legacy system maintenance where extended reliability is prioritized.

For Direct Dimensional Replacement:

UFW0J331MED (Nichicon) provides identical physical dimensions and height (0.433") with equivalent ripple current performance. Though obsolete, it maintains ROHS3 compliance and serves as a functional equivalent for applications where exact form factor is critical.

For Voltage Margin Applications:

UFW1A331MED and UKW1A331MED (both Nichicon) offer 10 V ratings while maintaining 330 µF capacitance and identical physical dimensions. These parts provide voltage headroom for circuits operating near the 6.3 V limit. Both are obsolete but ROHS3 compliant.

For High Ripple Current Requirements:

ECA-0JM331 (Panasonic Electronic Components) delivers the highest ripple current rating at 100 kHz (510 mA), making it suitable for applications with elevated AC stress. This part is active and ROHS3 compliant. Height is 0.480" (12.20 mm), requiring PCB layout verification.

Frequently Asked Questions (FAQ)

Q: Can I use a 10 V rated capacitor (UFW1A331MED, UKW1A331MED) as a direct replacement for the 6.3 V rated original part?

A: Yes. Higher voltage ratings are acceptable substitutes for lower voltage applications. The 10 V parts maintain identical capacitance (330 µF), tolerance (±20%), physical dimensions, and lead spacing. Voltage margin improves circuit reliability without affecting form factor or PCB compatibility.

Q: What is the significance of the height difference between ESMG6R3ELL331MF11D (0.492") and the original part (0.433")?

A: The 0.059" height increase requires verification against PCB clearance constraints and component placement density. If vertical space is limited, this part may not be suitable. Verify available height in the target application before selection.

Q: Why do some substitute parts show no ESR value?

A: ESR data is not provided in the input specifications for certain parts. This does not indicate inferior performance; it reflects incomplete technical documentation in the source data. Parts with documented ESR values (EKZE6R3ELL331MF11D: 130 mOhms, SEK331M6R3ST: 1.05 Ohm) demonstrate lower ESR than the original part (1.708 Ohm), indicating improved performance.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original SMG6.3VB331M6X11LL is RoHS non-compliant. For applications requiring RoHS compliance, any substitute part listed here satisfies regulatory requirements.

Q: Can I use EKZE6R3ELL331MF11D in place of SMG6.3VB331M6X11LL without PCB modification?

A: Yes. EKZE6R3ELL331MF11D maintains identical lead spacing (0.098" / 2.50 mm), case diameter (0.248" / 6.30 mm), and height (0.433" / 11.00 mm). Direct PCB substitution is possible without layout changes.

Q: Which substitute part offers the best performance for high-temperature environments?

A: SEK331M6R3ST provides the widest operating range (-55°C to 105°C) and lowest ESR (1.05 Ohm @ 120 Hz). UHE0J331MED offers extended lifetime (4000 Hrs @ 105°C) at elevated temperature. Selection depends on whether temperature range or lifetime duration is the primary requirement.

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

A: Upgrade parts feature improved specifications (higher temperature rating, extended lifetime, or higher voltage) with active product status. Similar parts maintain equivalent electrical specifications with active or obsolete status. Direct parts provide equivalent or superior specifications with active status and direct functional replacement capability. All three categories are electrically and mechanically compatible with the original part.

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