ESMQ350ELL331MJC5S Equivalent & Substitute Parts Reference

Part Overview

The ESMQ350ELL331MJC5S is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMQ series. This radial, through-hole component is rated for 2000 hours at 85°C and is designed for general-purpose applications. The part is currently active and in stock with 917 units available.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand extended operational lifetime, enhanced temperature performance, or when alternative suppliers offer improved electrical characteristics within the same mechanical and electrical envelope.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	330	µF	Critical - must match exactly
Voltage Rating	35	V	Critical - must match or exceed
Tolerance	±20%	%	Critical - must match
Lead Spacing	5.00	mm	Critical - PCB layout compatibility
Case Diameter	10.00	mm	Critical - mechanical fit
Height (Seated Max)	13.50 - 14.00	mm	Important - clearance constraints
Mounting Type	Through Hole	-	Critical - assembly method
Package Type	Radial, Can	-	Critical - form factor
Operating Temperature Range	-40°C to 85°C	°C	Important - environmental compatibility
Lifetime @ Temperature	2000 Hrs @ 85°C	Hrs	Important - reliability specification
Polarization	Polar	-	Critical - circuit polarity requirement
RoHS Status	ROHS3 Compliant	-	Important - regulatory compliance

Substitute Part Grouping Explanation

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

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 5.00 mm (exact match required)
Case Diameter: 10.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Polarization: Polar (exact match required)

Compatible Variation Parameters:

Height (Seated Max): 13.50 mm to 14.00 mm (within tolerance for standard PCB clearances)
Operating Temperature Range: May extend beyond -40°C to 85°C without affecting substitution validity
Lifetime @ Temperature: May exceed 2000 Hrs @ 85°C specification
Ripple Current Ratings: May exceed specified values
ESR/Impedance: Lower values are acceptable
RoHS/REACH Compliance: Must maintain or exceed original compliance level

All substitute parts listed below meet the critical matching parameters. Variations in lifetime, temperature range, and ripple current represent performance enhancements or alternative operational characteristics that do not compromise substitution compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance (%)	Lifetime @ Temp	Operating Temp (°C)	Height Max (mm)	Lead Spacing (mm)	Case Dia (mm)	Product Status	RoHS Status
ESMQ350ELL331MJC5S	Chemi-Con	SMQ	330	35	±20	2000 Hrs @ 85°C	-40 to 85	14.00	5.00	10.00	Active	ROHS3
35ZLQ330MEFC10X12.5	Rubycon	ZLQ	330	35	±20	5000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Active	ROHS3
B41821A7337M000	EPCOS - TDK Electronics	B41821	330	35	±20	2000 Hrs @ 85°C	-40 to 85	13.50	5.00	10.00	Active	ROHS3
ECA-1VHG331	Panasonic Electronic Components	NHG-A	330	35	±20	2000 Hrs @ 105°C	-55 to 105	13.50	5.00	10.00	Active	ROHS3
ECA-1VM331	Panasonic Electronic Components	M-A	330	35	±20	2000 Hrs @ 85°C	-40 to 85	13.50	5.00	10.00	Active	ROHS3
EEU-HD1V331	Panasonic Electronic Components	HD	330	35	±20	2000 Hrs @ 105°C	-55 to 105	14.00	5.00	10.00	Active	ROHS3
UHV1V331MPD	Nichicon	UHV	330	35	±20	6000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Not For New Designs	ROHS3
337CKE035M	Cornell Dubilier / Illinois Capacitor	CKE	330	35	±20	2000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Active	ROHS3
35YXJ330M10X12.5	Rubycon	YXJ	330	35	±20	10000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Active	ROHS3
35ZLH330MEFC10X12.5	Rubycon	ZLH	330	35	±20	10000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Active	ROHS3
35ZLS330MEFC10X12.5	Rubycon	ZLS	330	35	±20	6000 Hrs @ 105°C	-40 to 105	14.00	5.00	10.00	Active	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

The following parts are direct substitutes with equivalent or superior electrical performance and active product status:

B41821A7337M000 (EPCOS - TDK Electronics): Matches the original specification exactly with identical lifetime rating (2000 Hrs @ 85°C) and operating temperature range. Height is 13.50 mm, which is within acceptable PCB clearance tolerance. Active product status and ROHS3 compliance confirmed.
ECA-1VM331 (Panasonic Electronic Components): Identical lifetime and temperature specifications to the original part. Height is 13.50 mm. Active product status and ROHS3 compliance confirmed.

Enhanced Performance Substitutes (Extended Lifetime):

The following parts provide extended operational lifetime while maintaining all critical electrical and mechanical parameters:

35ZLQ330MEFC10X12.5 (Rubycon): Extends lifetime to 5000 Hrs @ 105°C with expanded operating temperature range (-40°C to 105°C). Active product status and ROHS3 compliance confirmed.
ECA-1VHG331 (Panasonic Electronic Components): Extends lifetime to 2000 Hrs @ 105°C with expanded operating temperature range (-55°C to 105°C). Active product status and ROHS3 compliance confirmed.
EEU-HD1V331 (Panasonic Electronic Components): Extends lifetime to 2000 Hrs @ 105°C with expanded operating temperature range (-55°C to 105°C). Active product status and ROHS3 compliance confirmed.
337CKE035M (Cornell Dubilier / Illinois Capacitor): Extends lifetime to 2000 Hrs @ 105°C with expanded operating temperature range (-40°C to 105°C). Active product status and ROHS3 compliance confirmed.
35YXJ330M10X12.5 (Rubycon): Extends lifetime to 10000 Hrs @ 105°C with expanded operating temperature range (-40°C to 105°C). Active product status and ROHS3 compliance confirmed.
35ZLH330MEFC10X12.5 (Rubycon): Extends lifetime to 10000 Hrs @ 105°C with expanded operating temperature range (-40°C to 105°C). Active product status and ROHS3 compliance confirmed.
35ZLS330MEFC10X12.5 (Rubycon): Extends lifetime to 6000 Hrs @ 105°C with expanded operating temperature range (-40°C to 105°C). Active product status and ROHS3 compliance confirmed.

Not Recommended for New Designs:

UHV1V331MPD (Nichicon): Product status is "Not For New Designs." Although electrical and mechanical specifications are compatible, this part should not be selected for new circuit designs. REACH status is "REACH Affected," which may present regulatory considerations.

All recommended substitutes maintain ROHS3 compliance and are available in active production status, ensuring long-term supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ESMQ350ELL331MJC5S with any of the listed parts without circuit modification?

A: Yes. All listed substitute parts match the critical electrical parameters (330 µF, 35 V, ±20% tolerance) and mechanical parameters (5.00 mm lead spacing, 10.00 mm case diameter, through-hole radial package). No circuit modifications are required. Height variations (13.50 mm to 14.00 mm) are within standard PCB clearance tolerances.

Q: What is the difference between "Direct Substitutes" and "Enhanced Performance Substitutes"?

A: Direct substitutes maintain identical lifetime and temperature specifications to the original part. Enhanced performance substitutes extend the operational lifetime (from 2000 hours to 5000, 6000, or 10000 hours) and may expand the operating temperature range. Both categories are electrically and mechanically compatible.

Q: Does selecting a substitute with extended lifetime affect circuit performance?

A: No. Extended lifetime specifications indicate improved internal construction and materials, not changes to electrical characteristics. Capacitance, voltage rating, tolerance, and ripple current handling remain equivalent or superior. The substitute will function identically in the circuit while providing longer operational life.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance certification, matching the original part's regulatory status.

Q: Why is UHV1V331MPD marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued the part for new applications. While the part remains electrically and mechanically compatible, it should not be selected for new circuit designs due to potential future supply discontinuation.

Q: What does "REACH Affected" status mean for UHV1V331MPD?

A: REACH Affected status indicates the part contains substances of concern under European REACH regulations. The original ESMQ350ELL331MJC5S is REACH Unaffected. If regulatory compliance with REACH Unaffected status is required, select alternative substitutes from the recommended list.

Q: Can I use a substitute with a lower height (13.50 mm vs. 14.00 mm)?

A: Yes. The 13.50 mm height is within acceptable tolerance for standard PCB designs. Verify clearance in your specific application, particularly if the capacitor is located near other components or under a heatsink.

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

A: The 35YXJ330M10X12.5 and 35ZLH330MEFC10X12.5 offer the highest lifetime rating at 10000 Hrs @ 105°C. These parts are suitable for applications requiring extended operational life in elevated temperature environments.

Q: Are there inventory considerations when selecting a substitute?

A: Inventory levels vary by part number. Verify availability with your supplier before finalizing component selection, particularly for parts with lower stock quantities.

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