SMG10VB33RM5X11LL Equivalent & Substitute Parts

Part Overview

The SMG10VB33RM5X11LL is a 33 µF, 10 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMG series. This component is classified as obsolete, indicating discontinued production and limited availability. The part features a radial through-hole configuration with a 5.00 mm diameter can and 11.00 mm seated height, designed for general-purpose applications requiring 2000 hours of operational life at 85°C.

Due to obsolete status and finite inventory (694 pieces), identifying equivalent and substitute parts is necessary for design continuity, production planning, and long-term component sourcing strategies.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	33	µF	Critical - must match exactly
Voltage Rating	10	V	Critical - minimum acceptable rating
Tolerance	±20%	%	Critical - must match or be tighter
ESR @ 120 Hz	53	mOhm	Important - affects ripple current handling
Lifetime @ Temperature	2000 Hrs @ 85°C	Hrs/°C	Important - defines operational reliability
Operating Temperature Range	-40°C to 85°C	°C	Important - defines environmental limits
Lead Spacing	2.00	mm	Critical - PCB layout compatibility
Diameter	5.00	mm	Critical - physical fit
Height	11.00	mm	Critical - clearance and assembly
Mounting Type	Through Hole	-	Critical - assembly method
Ripple Current @ 120 Hz	83	mA	Important - thermal performance
Ripple Current @ 100 kHz	149.4	mA	Important - high-frequency performance

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the SMG10VB33RM5X11LL:

Direct Equivalent (Same Voltage Rating - 10V):

ESMG100ELL330ME11D (Chemi-Con SMG series, active status)
UPW1A330MDD (Nichicon UPW series, obsolete status)

These parts maintain the 10 V voltage rating, 33 µF capacitance, ±20% tolerance, and through-hole radial configuration. They are electrically interchangeable for circuits designed around 10 V operation.

Upgraded Substitutes (Higher Voltage Rating - 16V to 35V):

SEK330M016ST (Mallory SEK series, 16 V rating)
SEK330M025ST (Cornell Dubilier SEK series, 25 V rating)
EKZE350ELL330ME11D (Chemi-Con KZE series, 35 V rating)
336SAK035M (Cornell Dubilier SAK series, 35 V rating)
EEU-EB1V330S (Panasonic EB-A series, 35 V rating)
UFW1V330MDD (Nichicon UFW series, 35 V rating, obsolete)
UHE1V330MDD (Nichicon UHE series, 35 V rating, obsolete)
UKW1V330MDD (Nichicon UKW series, 35 V rating, obsolete)

These parts provide higher voltage ratings while maintaining 33 µF capacitance, ±20% tolerance, and through-hole radial mounting. Higher voltage ratings provide design margin and are electrically compatible in 10 V circuits.

Substitution Criteria:

Capacitance: 33 µF (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 2.00 mm (exact match required)
Diameter: 5.00 mm (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Voltage Rating: 10 V minimum (equal or higher acceptable)
Height: Physical clearance verification required for heights exceeding 11.00 mm

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance (%)	Height (mm)	Lifetime @ Temp	Operating Temp (°C)	Status	RoHS
SMG10VB33RM5X11LL	Chemi-Con	SMG	33	10	±20	11.00	2000 Hrs @ 85°C	-40 to 85	Obsolete	Non-compliant
ESMG100ELL330ME11D	Chemi-Con	SMG	33	10	±20	12.50	2000 Hrs @ 85°C	-40 to 85	Active	ROHS3 Compliant
UPW1A330MDD	Nichicon	UPW	33	10	±20	11.00	2000 Hrs @ 105°C	-55 to 105	Obsolete	ROHS3 Compliant
SEK330M016ST	Mallory	SEK	33	16	±20	13.00	2000 Hrs @ 105°C	-55 to 105	Active	ROHS3 Compliant
SEK330M025ST	Cornell Dubilier	SEK	33	25	±20	13.00	2000 Hrs @ 105°C	-55 to 105	Active	ROHS3 Compliant
EKZE350ELL330ME11D	Chemi-Con	KZE	33	35	±20	12.50	2000 Hrs @ 105°C	-40 to 105	Active	ROHS3 Compliant
336SAK035M	Cornell Dubilier	SAK	33	35	±20	10.50	2000 Hrs @ 85°C	-40 to 85	Active	ROHS3 Compliant
EEU-EB1V330S	Panasonic	EB-A	33	35	±20	12.00	5000 Hrs @ 105°C	-40 to 105	Active	ROHS3 Compliant
UFW1V330MDD	Nichicon	UFW	33	35	±20	12.50	2000 Hrs @ 85°C	-40 to 85	Obsolete	ROHS3 Compliant
UHE1V330MDD	Nichicon	UHE	33	35	±20	11.00	5000 Hrs @ 105°C	-40 to 105	Obsolete	ROHS3 Compliant
UKW1V330MDD	Nichicon	UKW	33	35	±20	11.00	2000 Hrs @ 85°C	-40 to 85	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (10V Applications):

ESMG100ELL330ME11D is the primary recommended substitute. This part maintains identical electrical specifications (33 µF, 10 V, ±20% tolerance) and is manufactured by Chemi-Con in the same SMG series. The part is currently in active production status with 1080 pieces in stock. ROHS3 compliance provides regulatory advantage over the obsolete non-compliant original. Height increase from 11.00 mm to 12.50 mm requires PCB clearance verification but does not affect electrical performance.

UPW1A330MDD (Nichicon UPW series) provides an alternative 10 V equivalent with identical height (11.00 mm) to the original part. This part is obsolete but offers extended operating temperature range (-55°C to 105°C) and higher lifetime rating (2000 Hrs @ 105°C). ROHS3 compliance is confirmed. Inventory availability is 4839 pieces.

For Upgraded Voltage Applications (16V to 35V):

When circuit design permits higher voltage ratings, upgraded substitutes provide enhanced reliability margins and extended product availability:

336SAK035M (Cornell Dubilier SAK series): Active status, 35 V rating, height 10.50 mm (smallest among 35V options), 2000 Hrs @ 85°C lifetime. Suitable for space-constrained designs.
EKZE350ELL330ME11D (Chemi-Con KZE series): Active status, 35 V rating, extended operating temperature (-40°C to 105°C), 2000 Hrs @ 105°C lifetime. Maintains Chemi-Con manufacturer continuity. 17649 pieces in stock.
EEU-EB1V330S (Panasonic EB-A series): Active status, 35 V rating, superior lifetime rating (5000 Hrs @ 105°C), extended operating temperature range. 16020 pieces in stock. Recommended for applications requiring maximum reliability.
SEK330M025ST (Cornell Dubilier SEK series): Active status, 25 V rating, 2000 Hrs @ 105°C lifetime, extended operating temperature range (-55°C to 105°C). Intermediate voltage option with 1015 pieces available.

All recommended substitutes are ROHS3 compliant, addressing regulatory compliance gaps in the original obsolete part.

Frequently Asked Questions (FAQ)

Q1: Can I use a 35V rated capacitor in a circuit designed for 10V?

A: Yes. Voltage rating indicates the maximum safe operating voltage. A 35V capacitor operates safely at 10V and below. Higher voltage ratings provide design margin and do not affect circuit function. Physical dimensions and capacitance value must remain compatible.

Q2: What is the significance of the height difference between SMG10VB33RM5X11LL (11.00 mm) and ESMG100ELL330ME11D (12.50 mm)?

A: The 1.50 mm height increase requires verification of available PCB clearance above the component. If clearance exists, the substitution is mechanically compatible. If space is constrained, alternative parts with matching or smaller heights (336SAK035M at 10.50 mm, UHE1V330MDD at 11.00 mm) should be evaluated.

Q3: Why is the original SMG10VB33RM5X11LL marked as obsolete?

A: Obsolete status indicates Chemi-Con has discontinued production. This necessitates identifying active-status alternatives to ensure long-term component availability for production and field service applications.

Q4: What does ROHS3 compliance mean for this capacitor?

A: ROHS3 compliance certifies the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original part is non-compliant; all recommended substitutes are ROHS3 compliant, providing regulatory advantage.

Q5: Are all substitute parts through-hole radial components with 2.00 mm lead spacing?

A: Yes. All substitute parts listed maintain through-hole radial configuration with 2.00 mm lead spacing and 5.00 mm diameter, ensuring PCB footprint compatibility with the original part.

Q6: Which substitute offers the longest operational lifetime?

A: EEU-EB1V330S (Panasonic EB-A series) provides 5000 Hrs @ 105°C, compared to 2000 Hrs @ 85°C for the original part. This represents 2.5x longer lifetime at higher temperature, suitable for demanding applications.

Q7: Can I substitute an obsolete part (UFW1V330MDD, UHE1V330MDD, UKW1V330MDD) for the original SMG10VB33RM5X11LL?

A: Obsolete substitutes are electrically compatible but present long-term sourcing risk. Active-status alternatives (ESMG100ELL330ME11D, EKZE350ELL330ME11D, EEU-EB1V330S) are preferred for new designs and production planning to ensure sustained component availability.

Q8: What parameters must match exactly between the original and substitute parts?

A: Capacitance (33 µF), tolerance (±20%), lead spacing (2.00 mm), diameter (5.00 mm), and mounting type (through-hole radial) must match exactly. Voltage rating may be equal or higher. Height may vary within PCB clearance limits. ESR and ripple current specifications may differ without affecting basic circuit function.

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