337SML025MD10 Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 337SML025MD10 is a 330 µF, 25 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Substitute parts are identified when design requirements permit operation at higher voltage ratings while maintaining identical capacitance, tolerance, physical dimensions, and thermal characteristics. The availability of alternative voltage ratings ensures design flexibility and supply chain continuity.

Substiute Parts

337SML025MD10

Cornell Dubilier / Illinois CapacitorIn Stock: 1069337SML025MD10 Datasheet

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337SML035M

Cornell Dubilier / Illinois CapacitorIn Stock: 1857337SML035M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 337SML025MD10 is permitted with the 337SML035M based on the following criteria:

Identical Parameters (Substitution Basis):

• Capacitance: 330 µF (both parts)
• Tolerance: ±20% (both parts)
• Operating Temperature Range: -40°C to 85°C (both parts)
• Lifetime @ 85°C: 2000 Hrs (both parts)
• Physical Dimensions: 10.00 mm diameter, 10.60 mm height (both parts)
• Surface Mount Land Size: 10.00 mm × 10.00 mm (both parts)
• Mounting Type: Surface Mount (both parts)
• Package / Case: Radial, Can - SMD (both parts)
• RoHS Status: ROHS3 Compliant (both parts)
• MSL Rating: 1 (Unlimited) (both parts)
• Series: SML (both parts)
• Manufacturer: Cornell Dubilier / Illinois Capacitor (both parts)

Differing Parameter (Voltage Rating):

• 337SML025MD10: 25 V rated voltage
• 337SML035M: 35 V rated voltage

The 337SML035M operates at a higher voltage rating and is therefore suitable as a direct substitute in applications where the circuit voltage does not exceed 25 V. The substitute part provides enhanced voltage margin and maintains all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 337SML025MD10 and 337SML035M are Active product status components manufactured by Cornell Dubilier / Illinois Capacitor and comply with ROHS3 and REACH requirements. Selection between these parts is determined by circuit voltage requirements:

Use 337SML025MD10 when:

• Circuit design specifies 25 V maximum operating voltage
• Voltage margin of 25 V is sufficient for application requirements
• Original design validation is based on this specific part number

Use 337SML035M when:

• Circuit design permits operation up to 35 V
• Higher voltage rating provides additional safety margin
• Supply chain availability of 337SML025MD10 is constrained
• Design allows for voltage rating upgrade without functional impact

Both parts maintain identical capacitance (330 µF), tolerance (±20%), thermal lifetime (2000 Hrs @ 85°C), physical dimensions (10.00 mm diameter × 10.60 mm height), and surface mount compatibility. ESR values remain within 3 mOhm of each other (700 mOhm vs 703 mOhm @ 120 Hz), ensuring equivalent performance in ripple current and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can 337SML035M be used as a direct replacement for 337SML025MD10?

A: Yes, the 337SML035M is a direct substitute when circuit voltage does not exceed 25 V. The higher voltage rating (35 V) provides additional voltage margin while maintaining identical capacitance, tolerance, physical dimensions, and thermal specifications.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts have identical surface mount dimensions: 10.00 mm diameter, 10.60 mm height, and 10.00 mm × 10.00 mm surface mount land size. PCB layout and assembly tooling require no modification.

Q: What is the difference in ESR between these parts?

A: The ESR difference is minimal: 337SML025MD10 has 700 mOhm @ 120 Hz, while 337SML035M has 703 mOhm @ 120 Hz. This 3 mOhm variance is within normal manufacturing tolerance and does not affect circuit performance.

Q: Do both parts have the same thermal lifetime rating?

A: Yes. Both parts are rated for 2000 Hrs @ 85°C, ensuring equivalent reliability and service life in thermal stress conditions.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and carry MSL Rating 1 (Unlimited). Compliance status is identical.

Q: Can 337SML025MD10 be used in place of 337SML035M?

A: No. The 337SML025MD10 has a lower voltage rating (25 V) and cannot be substituted for the 337SML035M in circuits requiring 35 V operation. Voltage rating downgrade creates risk of capacitor failure.

Q: What is the ripple current capacity difference?

A: At 120 Hz, 337SML025MD10 supports 340 mA while 337SML035M supports 360 mA. At 100 kHz, 337SML025MD10 supports 510 mA. The 337SML035M provides slightly higher low-frequency ripple current capacity.