EMLA250ARA331MJA0G Equivalent & Substitute Parts

Part Overview

The EMLA250ARA331MJA0G is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Chemi-Con in the Alchip™ MLA series. This surface mount radial can capacitor is designed for general purpose applications with a rated lifetime of 3000 hours at 105°C. The part is active and in production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified to address inventory availability, extended operational lifetime requirements, higher voltage ratings, automotive-grade certifications, or enhanced thermal performance specifications while maintaining core electrical compatibility.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	25	V
Tolerance	±20%	—
Lifetime @ Temperature	3000 Hrs @ 105°C	—
Operating Temperature Range	-40°C ~ 105°C	—
Polarization	Polar	—
Package / Case	Radial, Can - SMD	—
Size / Dimension	0.394" Dia (10.00mm)	—
Height - Seated (Max)	0.406" (10.30mm)	—
Surface Mount Land Size	0.406" L x 0.406" W (10.30mm x 10.30mm)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution logic is based on the following core parameters that must remain constant or compatible:

Critical Parameters (Must Match or Exceed):

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

Performance Parameters (May Vary Within Acceptable Ranges):

Lifetime @ Temperature: 3000 hours minimum at rated temperature
Operating Temperature Range: Must encompass -40°C to 105°C minimum
Size / Dimension: Physical dimensions must be compatible with PCB layout constraints
Height - Seated (Max): Must not exceed 0.413" (10.50mm) for standard board clearance

Compliance Parameters:

RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for manufacturing flexibility
REACH Status: REACH Unaffected (required)

Substitute parts are grouped into the following categories:

Category 1: Direct Equivalents (25V, General Purpose) Parts with identical voltage rating and general purpose application classification, offering extended lifetime or improved ESR characteristics.

Category 2: Automotive-Grade Upgrades (25V, AEC-Q200) Parts with AEC-Q200 certification suitable for automotive applications, featuring enhanced thermal performance and reliability.

Category 3: Higher Voltage Upgrades (35V) Parts with elevated voltage ratings providing additional design margin and component stress reduction.

Category 4: Extended Lifetime (8000+ Hours) Parts with significantly extended operational lifetime at rated temperature for long-life applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ Temp.	Operating Temp. Range	Size Dia (mm)	Height Max (mm)	ESR @ 100kHz	Ripple Current @ 100kHz (mA)	AEC-Q200	Inventory (Pcs)
EMLA250ARA331MJA0G	Chemi-Con	330	25	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	10.00	10.30	80 mOhm	850	—	737
25TGV330M10X10.5	Rubycon	330	25	±20%	3000 Hrs @ 125°C	-40°C ~ 125°C	10.00	10.50	120 mOhm @ 100kHz	550	Yes	1339
25THV330M10X10.5	Rubycon	330	25	±20%	3000 Hrs @ 125°C	-40°C ~ 125°C	10.00	10.50	200 mOhm @ 100Hz	500	Yes	1263
25TRV330M10X10.5	Rubycon	330	25	±20%	8000 Hrs @ 105°C	-40°C ~ 105°C	10.00	10.50	120 mOhm	850	—	1347
35TLV330M10X10.5	Rubycon	330	35	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	10.00	10.50	80 mOhm	850	Yes	19856
EEE-HC1E331P	Panasonic	330	25	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	10.00	10.20	—	404.6 @ 10kHz	Yes	2360
EEE-TC1E331P	Panasonic	330	25	±20%	3000 Hrs @ 125°C	-40°C ~ 125°C	10.00	10.50	150 mOhm @ 100kHz	750	Yes	1503
EEE-TK1E331UP	Panasonic	330	25	±20%	3000 Hrs @ 125°C	-40°C ~ 125°C	10.00	10.20	200 mOhm @ 100kHz	270	—	2816
EXV337M025A9PAA	KEMET	330	25	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	10.00	10.50	120 mOhm @ 100kHz	850	—	2874
EXV337M035S9PAA	KEMET	330	35	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	10.00	10.50	120 mOhm @ 100kHz	850	Yes	773
UUA1E331MNL1GS	Nichicon	330	25	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	10.00	10.00	—	—	—	5800

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

The EMLA250ARA331MJA0G can be directly replaced with UUA1E331MNL1GS (Nichicon UUA series) when inventory of the original part is unavailable. Both parts share identical electrical specifications (330 µF, 25 V, ±20% tolerance) and physical compatibility (10.00mm diameter, surface mount radial can). The Nichicon part offers extended lifetime (5000 hours at 105°C versus 3000 hours) and wider operating temperature range (-55°C to 105°C), providing enhanced reliability without design modification.

For Extended Lifetime Applications:

The 25TRV330M10X10.5 (Rubycon TRV series) is specified for applications requiring extended operational lifetime. This part delivers 8000 hours at 105°C, significantly exceeding the original 3000-hour specification. Physical dimensions are compatible with standard PCB layouts (10.00mm diameter, 10.50mm maximum height). This selection is appropriate for long-life consumer electronics and industrial equipment where component replacement cycles must be minimized.

For Automotive Applications with AEC-Q200 Certification:

The 25TGV330M10X10.5 (Rubycon TGV series) and EEE-TC1E331P (Panasonic TC series) both carry AEC-Q200 automotive qualification. These parts are suitable for automotive-grade designs requiring enhanced reliability and thermal performance. Both operate at -40°C to 125°C, providing superior high-temperature performance compared to the original specification. The Rubycon TGV part offers lower ESR (120 mOhm at 100 kHz) and higher ripple current capability (550 mA at 100 kHz).

For Higher Voltage Design Margin:

The 35TLV330M10X10.5 (Rubycon TLV series) and EXV337M035S9PAA (KEMET EXV series) provide 35 V rated voltage, offering increased design margin for applications subject to voltage transients or overvoltage conditions. Both parts maintain 330 µF capacitance and ±20% tolerance. The Rubycon TLV part includes AEC-Q200 certification and extended operating temperature range (-55°C to 105°C). The KEMET EXV part delivers 5000-hour lifetime at 105°C with 120 mOhm ESR at 100 kHz.

For General Purpose Applications with Enhanced Performance:

The EXV337M025A9PAA (KEMET EXV series, 25 V) provides 5000-hour lifetime at 105°C with low ESR (120 mOhm at 100 kHz) and full ripple current capability (850 mA at 100 kHz). This part matches the original ripple current specification while offering extended lifetime and wider operating temperature range (-55°C to 105°C).

All recommended substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity level, and REACH unaffected status, ensuring compatibility with current manufacturing and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can the EMLA250ARA331MJA0G be replaced with a higher voltage rated part such as the 35TLV330M10X10.5?

A: Yes. Higher voltage rated capacitors are electrically compatible with lower voltage applications. The 35 V rated part can be used in place of the 25 V rated original part without circuit modification. This substitution provides additional design margin and reduces component stress. Physical dimensions remain compatible with standard PCB layouts.

Q: What is the difference between the Rubycon TGV and THV series parts?

A: Both the 25TGV330M10X10.5 and 25THV330M10X10.5 are 330 µF, 25 V capacitors with 3000-hour lifetime at 125°C and AEC-Q200 certification. The primary difference is ESR specification: TGV series specifies 120 mOhm at 100 kHz, while THV series specifies 200 mOhm at 100 Hz. The TGV part offers lower impedance at high frequency and higher ripple current capability (550 mA at 100 kHz versus 500 mA).

Q: Are all substitute parts compatible with the original PCB layout?

A: Physical compatibility depends on specific board constraints. All substitute parts share the same 10.00mm diameter and 0.406" L x 0.406" W (10.30mm x 10.30mm) surface mount land size as the original part. However, maximum seated height varies: the original EMLA250ARA331MJA0G specifies 10.30mm maximum height, while most substitute parts specify 10.50mm maximum height. Verify board clearance requirements before substitution. The UUA1E331MNL1GS and EEE-HC1E331P offer reduced height (10.00mm and 10.20mm respectively) for space-constrained applications.

Q: Which substitute part offers the best ripple current performance?

A: The 25TRV330M10X10.5 (Rubycon TRV) and EXV337M025A9PAA (KEMET EXV) both deliver 850 mA ripple current at 100 kHz, matching the original EMLA250ARA331MJA0G specification. The 25TGV330M10X10.5 provides 550 mA at 100 kHz, while the EEE-TC1E331P delivers 750 mA at 100 kHz. Selection depends on application ripple current requirements.

Q: What is the advantage of AEC-Q200 certified parts?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and qualification standards. These parts undergo enhanced testing for temperature cycling, vibration, and long-term stability. AEC-Q200 certified substitutes (25TGV330M10X10.5, 25THV330M10X10.5, 35TLV330M10X10.5, EEE-HC1E331P, EEE-TC1E331P, EXV337M035S9PAA) are suitable for automotive applications and applications requiring automotive-grade reliability.

Q: Can the EMLA250ARA331MJA0G be replaced with the EEE-TK1E331UP?

A: The EEE-TK1E331UP is electrically compatible (330 µF, 25 V, ±20% tolerance) and physically compatible with the original part. However, this part specifies lower ripple current capability (270 mA at 100 kHz versus 850 mA for the original). Substitution is appropriate only for applications with low ripple current requirements. Verify application ripple current specifications before selection.

Q: What is the difference between ESR specifications at different frequencies?

A: ESR (Equivalent Series Resistance) varies with frequency. Parts specifying ESR at 100 kHz (such as 25TGV330M10X10.5 at 120 mOhm) indicate impedance at high-frequency switching applications. Parts specifying ESR at 100 Hz (such as 25THV330M10X10.5 at 200 mOhm) indicate impedance at low-frequency ripple current. For high-frequency switching power supplies, select parts with ESR specified at 100 kHz or higher frequencies.

Q: Which substitute part has the longest operational lifetime?

A: The 25TRV330M10X10.5 (Rubycon TRV series) specifies 8000 hours at 105°C, the longest lifetime among all substitute options. This part is specified for applications requiring extended service life and minimal maintenance intervals. All other substitute parts specify either 3000 or 5000-hour lifetimes at their respective rated temperatures.

Q: Are all substitute parts available in Tape & Reel (TR) packaging?

A: Yes. All substitute parts listed are available in Tape & Reel (TR) packaging, consistent with the original EMLA250ARA331MJA0G packaging format. This ensures compatibility with automated assembly equipment and standard component handling procedures.

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