ESMQ250ELL331MHB5D Equivalent & Substitute Parts

Part Overview

The ESMQ250ELL331MHB5D is a 330 µF, 25 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 in production with 991 pieces in stock.

Equivalent and substitute parts are necessary when the original ESMQ250ELL331MHB5D becomes unavailable, when design requirements demand extended operational lifetime, or when thermal performance specifications must be upgraded. Alternative components meeting identical electrical and mechanical parameters ensure circuit functionality while maintaining compatibility with existing PCB layouts and assembly processes.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage - Rated	25 V
Tolerance	±20%
Lead Spacing	0.138" (3.50 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.512" (13.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
Polarization	Polar
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ESMQ250ELL331MHB5D is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.138" (3.50 mm) (exact match required)
Size / Dimension: 0.315" Dia (8.00 mm) (exact match required)
Height - Seated (Max): 0.512" (13.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Polarization: Polar (exact match required)

Variable Parameters Allowing Substitution:

Operating Temperature Range: May extend beyond -40°C ~ 85°C
Lifetime @ Temperature: May exceed 2000 Hrs @ 85°C
Ripple Current Ratings: May exceed specified values
Impedance: May vary within acceptable performance bounds
Manufacturer: Different manufacturers permitted if all mandatory parameters match

All substitute parts listed below satisfy these mandatory matching criteria while offering equal or superior performance characteristics in lifetime, temperature rating, or ripple current capacity.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp.	Lead Spacing	Size Dia	Height Max	Mounting	Package	Product Status
ESMQ250ELL331MHB5D	Chemi-Con	SMQ	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
EKYB250ELL331MHB5D	Chemi-Con	KYB	330 µF	25 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
EKZM250ELL331MHB5D	Chemi-Con	KZM	330 µF	25 V	±20%	8000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
25ZLJ330M8X11.5	Rubycon	ZLJ	330 µF	25 V	±20%	9000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
25ZLQ330MEFC8X11.5	Rubycon	ZLQ	330 µF	25 V	±20%	4000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
ECA-1EM331	Panasonic Electronic Components	M-A	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.492" (12.50 mm)	Through Hole	Radial, Can	Active
EEU-FR1E331	Panasonic Electronic Components	FR-A	330 µF	25 V	±20%	6000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
UHV1E331MPD	Nichicon	UHV	330 µF	25 V	±20%	6000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Not For New Designs
25YXG330MEFC8X11.5	Rubycon	YXG	330 µF	25 V	±20%	4000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Not For New Designs
25YXJ330M8X11.5	Rubycon	YXJ	330 µF	25 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active
25ZLH330MEFC8X11.5	Rubycon	ZLH	330 µF	25 V	±20%	8000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Through Hole	Radial, Can	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

ECA-1EM331 from Panasonic Electronic Components is the primary equivalent to ESMQ250ELL331MHB5D. Both components share identical electrical specifications (330 µF, 25 V, ±20% tolerance) and identical thermal ratings (2000 Hrs @ 85°C, -40°C ~ 85°C operating range). Both are ROHS3 compliant and active in production. The only dimensional variance is height: ECA-1EM331 measures 0.492" (12.50 mm) versus 0.512" (13.00 mm) for the original part. This 0.020" (0.50 mm) difference is within typical PCB layout tolerances for through-hole components.

For Enhanced Thermal Performance:

When extended operational lifetime or elevated temperature capability is required, the following active-status alternatives provide superior thermal characteristics while maintaining all mandatory electrical and mechanical parameters:

EKYB250ELL331MHB5D (Chemi-Con KYB series): 7000 Hrs @ 105°C, -40°C ~ 105°C
EKZM250ELL331MHB5D (Chemi-Con KZM series): 8000 Hrs @ 105°C, -40°C ~ 105°C
25ZLJ330M8X11.5 (Rubycon ZLJ series): 9000 Hrs @ 105°C, -40°C ~ 105°C
EEU-FR1E331 (Panasonic FR-A series): 6000 Hrs @ 105°C, -40°C ~ 105°C
25YXJ330M8X11.5 (Rubycon YXJ series): 7000 Hrs @ 105°C, -40°C ~ 105°C
25ZLH330MEFC8X11.5 (Rubycon ZLH series): 8000 Hrs @ 105°C, -40°C ~ 105°C

All listed alternatives are ROHS3 compliant and active in production status.

Parts Not Recommended for New Designs:

UHV1E331MPD (Nichicon UHV series) and 25YXG330MEFC8X11.5 (Rubycon YXG series) carry "Not For New Designs" product status. While electrically and mechanically compatible, these components should not be selected for new circuit designs due to manufacturer discontinuation or obsolescence planning.

Frequently Asked Questions (FAQ)

Q: Can ESMQ250ELL331MHB5D be replaced with ECA-1EM331?

A: Yes. Both components are direct equivalents with identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), lead spacing (0.138" / 3.50 mm), diameter (0.315" / 8.00 mm), and thermal rating (2000 Hrs @ 85°C). The height difference of 0.020" (0.50 mm) is within standard PCB layout tolerances for through-hole components. Both are ROHS3 compliant and active in production.

Q: What is the difference between ESMQ250ELL331MHB5D and EKYB250ELL331MHB5D?

A: Both are 330 µF, 25 V radial aluminum electrolytic capacitors with identical physical dimensions and lead spacing. The primary difference is thermal performance: ESMQ250ELL331MHB5D is rated for 2000 Hrs @ 85°C with operating range -40°C ~ 85°C, while EKYB250ELL331MHB5D is rated for 7000 Hrs @ 105°C with operating range -40°C ~ 105°C. EKYB250ELL331MHB5D provides extended lifetime and higher temperature capability.

Q: Are all substitute parts physically interchangeable on the PCB?

A: All substitute parts listed maintain the mandatory mechanical parameters: 0.138" (3.50 mm) lead spacing, 0.315" (8.00 mm) diameter, and 0.512" (13.00 mm) maximum seated height. The single exception is ECA-1EM331, which has a maximum seated height of 0.492" (12.50 mm), 0.020" (0.50 mm) shorter than the original. This minor difference does not prevent physical installation on standard PCB layouts designed for through-hole radial capacitors.

Q: Can I use a substitute part with higher ripple current rating?

A: Yes. Substitute parts with higher ripple current ratings (such as 25ZLJ330M8X11.5 with 1.2 A @ 100 kHz versus ESMQ250ELL331MHB5D with 660 mA @ 100 kHz) are fully compatible. Higher ripple current capability indicates superior performance and does not create circuit incompatibility.

Q: What does "Not For New Designs" status mean?

A: "Not For New Designs" indicates that the manufacturer has discontinued or is discontinuing the product line. While UHV1E331MPD and 25YXG330MEFC8X11.5 remain electrically and mechanically compatible with ESMQ250ELL331MHB5D, these parts should not be selected for new circuit designs. Use active-status alternatives instead.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference document are ROHS3 compliant, matching the compliance status of ESMQ250ELL331MHB5D.

Q: Which substitute offers the longest operational lifetime?

A: 25ZLJ330M8X11.5 from Rubycon offers the longest rated lifetime at 9000 Hrs @ 105°C. This part maintains all mandatory electrical and mechanical parameters while providing superior thermal endurance compared to the original ESMQ250ELL331MHB5D (2000 Hrs @ 85°C).

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