EMVK250ADA331MJA0G Equivalent & Substitute Parts

Part Overview

The EMVK250ADA331MJA0G is a 330 µF, 25 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Chemi-Con under the Alchip™ MVK series. This component is rated for 2000 hours at 105°C with a ripple current capability of 450 mA at 120 Hz, designed for general-purpose applications.

The EMVK250ADA331MJA0G is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and accommodate evolving application requirements such as extended lifetime, improved thermal performance, or automotive-grade reliability.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	—
Voltage - Rated	25	V
Lifetime @ Temperature	2000 Hrs @ 105°C	—
Operating Temperature Range	-40°C ~ 105°C	—
Ripple Current @ 120 Hz	450	mA
Size / Dimension	0.394" Dia (10.00 mm)	—
Height - Seated (Max)	0.394" (10.00 mm)	—
Surface Mount Land Size	0.406" L x 0.406" W (10.30 mm x 10.30 mm)	—
Mounting Type	Surface Mount	—
Package / Case	Radial, Can - SMD	—
Polarization	Polar	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the EMVK250ADA331MJA0G is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 25 V minimum (equal or higher voltage rating is acceptable)
Mounting Type: Surface Mount (exact match required)
Package / Case: Radial, Can - SMD (exact match required)
Polarization: Polar (exact match required)
Surface Mount Land Size: 0.406" L x 0.406" W (10.30 mm x 10.30 mm) (exact match required)

Performance Parameters (Variable):

Lifetime @ Temperature: 2000 Hrs @ 105°C or greater
Operating Temperature Range: -40°C ~ 105°C or extended range
Ripple Current @ 120 Hz: 450 mA or greater
ESR and Impedance: Specifications vary by series
Height - Seated: Tolerance within PCB design constraints

Substitute parts are grouped into three categories:

Direct Substitutes (Same Voltage Rating - 25 V): Parts maintaining 25 V rating with improved or equivalent lifetime and ripple current specifications.

Voltage-Upgraded Substitutes (35 V Rating): Parts with elevated voltage rating (35 V) providing additional design margin while maintaining identical capacitance and footprint compatibility.

Automotive-Grade Upgrades (AEC-Q200 Certified): Parts with extended temperature range (-40°C ~ 125°C), automotive qualification, and enhanced ESR specifications for demanding thermal environments.

Parameter Comparison

Part Number	Series	Capacitance (µF)	Voltage (V)	Lifetime @ Temp	Operating Temp Range (°C)	Ripple Current @ 120 Hz (mA)	Height - Seated (mm)	Product Status	Compliance
EMVK250ADA331MJA0G	MVK	330	25	2000 Hrs @ 105°C	-40 ~ 105	450	10.00	Obsolete	REACH Unaffected
EMLA250ARA331MJA0G	MLA	330	25	3000 Hrs @ 105°C	-40 ~ 105	425	10.30	Active	ROHS3 Compliant
EMVL250ARA331MJA0G	MVL	330	25	5000 Hrs @ 105°C	-40 ~ 105	238	10.30	Active	ROHS3 Compliant
EMHB250ARA331MJA0G	MHB	330	25	2000 Hrs @ 125°C	-40 ~ 125	306.9	10.50	Active	ROHS3 Compliant, AEC-Q200
EMHJ250ARA331MJA0G	MHJ	330	25	2000 Hrs @ 125°C	-40 ~ 125	275	10.30	Active	ROHS3 Compliant, AEC-Q200
EMVH250ARA331MJA0G	MVH	330	25	2000 Hrs @ 125°C	-40 ~ 125	275.28	10.30	Active	ROHS3 Compliant
EMLA350ARA331MJA0G	MLA	330	35	3000 Hrs @ 105°C	-40 ~ 105	425	10.30	Active	ROHS3 Compliant
EMVE350ARA331MJA0G	MVE	330	35	2000 Hrs @ 105°C	-40 ~ 105	450	10.00	Active	ROHS3 Compliant
EMVY350ARA331MJA0G	MVY	330	35	2000 Hrs @ 105°C	-55 ~ 105	335	10.00	Active	ROHS3 Compliant
EMZA350ARA331MJA0G	MZA	330	35	2000 Hrs @ 105°C	-55 ~ 105	425	10.50	Active	ROHS3 Compliant, AEC-Q200
EMZA350GRA331MJA0G	MZA	330	35	2000 Hrs @ 105°C	-55 ~ 105	425	10.50	Active	ROHS3 Compliant, AEC-Q200

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance):

EMVE350ARA331MJA0G is the closest functional equivalent to EMVK250ADA331MJA0G. Both parts maintain identical capacitance (330 µF), tolerance (±20%), and ripple current at 120 Hz (450 mA). EMVE350ARA331MJA0G is active and ROHS3 compliant. The voltage rating is elevated to 35 V, providing additional design margin without affecting circuit compatibility. Height and footprint remain compatible with the original design.

For Extended Lifetime Applications:

EMLA250ARA331MJA0G extends operational lifetime to 3000 hours at 105°C while maintaining 25 V rating and general-purpose application suitability. EMVL250ARA331MJA0G provides maximum lifetime (5000 hours at 105°C) for long-duration service requirements, though ripple current is reduced to 238 mA at 120 Hz.

For Elevated Temperature Environments:

EMHB250ARA331MJA0G and EMHJ250ARA331MJA0G extend operating temperature to 125°C with AEC-Q200 automotive qualification. Both maintain 2000-hour lifetime at the elevated temperature. EMHJ250ARA331MJA0G offers superior high-frequency ripple current (550 mA @ 100 kHz) with lower ESR (120 mOhm @ 100 kHz).

For Automotive Applications with Voltage Margin:

EMZA350ARA331MJA0G and EMZA350GRA331MJA0G provide 35 V rating, extended temperature range (-55°C ~ 105°C), and AEC-Q200 certification. Both deliver 425 mA ripple current at 120 Hz with 80 mOhm impedance. These parts are suitable for automotive power supply and filtering circuits requiring enhanced reliability.

For Extended Low-Temperature Operation:

EMVY350ARA331MJA0G extends minimum operating temperature to -55°C while maintaining 35 V rating and 2000-hour lifetime at 105°C. This part is suitable for applications requiring wide temperature range coverage.

All substitute parts maintain surface mount radial can package compatibility and MSL 1 (unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q1: Can EMVK250ADA331MJA0G be replaced with a 35 V rated substitute?

Yes. A 35 V rated capacitor (such as EMVE350ARA331MJA0G, EMLA350ARA331MJA0G, or EMZA350ARA331MJA0G) is electrically compatible with a 25 V design. The elevated voltage rating provides additional design margin and does not affect circuit operation. All substitute parts maintain identical capacitance (330 µF), tolerance (±20%), and surface mount footprint.

Q2: What is the difference between EMLA250ARA331MJA0G and EMVL250ARA331MJA0G?

Both parts are 330 µF, 25 V, surface mount capacitors with identical footprint. EMLA250ARA331MJA0G provides 3000-hour lifetime at 105°C with 425 mA ripple current at 120 Hz. EMVL250ARA331MJA0G extends lifetime to 5000 hours at 105°C but reduces ripple current to 238 mA at 120 Hz. Selection depends on whether extended lifetime or higher ripple current capacity is required.

Q3: Are automotive-grade parts (AEC-Q200) suitable for non-automotive applications?

Yes. AEC-Q200 certified parts (EMHB250ARA331MJA0G, EMHJ250ARA331MJA0G, EMZA350ARA331MJA0G, EMZA350GRA331MJA0G) meet stringent automotive reliability standards and are fully compatible with general-purpose applications. These parts offer enhanced thermal performance and extended operating temperature range, making them suitable for any application requiring improved reliability.

Q4: What is the physical height difference between substitute parts?

The original EMVK250ADA331MJA0G has a seated height of 10.00 mm. Most substitute parts have a seated height of 10.30 mm or 10.50 mm. These height variations are within typical PCB design tolerances for surface mount components. Verify PCB clearance during layout to ensure compatibility with surrounding components.

Q5: Which substitute part offers the best high-frequency ripple current performance?

EMHJ250ARA331MJA0G delivers the highest high-frequency ripple current at 550 mA @ 100 kHz with ESR of 120 mOhm @ 100 kHz. This part is optimized for switching power supply applications requiring low impedance at elevated frequencies.

Q6: Can EMVK250ADA331MJA0G be used in automotive applications?

The original EMVK250ADA331MJA0G is not AEC-Q200 certified and is classified as obsolete. For automotive applications, use AEC-Q200 certified substitutes: EMHB250ARA331MJA0G, EMHJ250ARA331MJA0G, EMZA350ARA331MJA0G, or EMZA350GRA331MJA0G.

Q7: What does ROHS3 compliance mean?

ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting the use of specific hazardous materials including lead, mercury, cadmium, and certain flame retardants. All active substitute parts listed are ROHS3 compliant.

Q8: Is packaging type (Tape & Reel vs. Cut Tape) relevant to electrical compatibility?

No. Packaging type (Tape & Reel, Cut Tape, or bulk) affects supply chain logistics and handling but does not affect electrical performance or circuit compatibility. Select packaging based on production volume and assembly requirements.

Q9: Why is the original EMVK250ADA331MJA0G classified as obsolete?

Product obsolescence typically results from manufacturer discontinuation due to market demand shifts, technology advancement, or series consolidation. Active substitute parts from the same manufacturer provide equivalent or superior performance with continued supply availability.

Q10: Are all substitute parts pin-compatible with the original design?

Yes. All substitute parts maintain identical surface mount radial can package, polarization (polar), and land size (0.406" L x 0.406" W / 10.30 mm x 10.30 mm). No PCB redesign is required for substitution.

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