CGS203U030R5L Equivalent & Substitute Parts Reference

Part Overview

The CGS203U030R5L is a 20000 µF, 30 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the CGS series. This radial, can-style capacitor with screw terminals is designed for general-purpose applications requiring high capacitance values in chassis-mount configurations. The part is currently Active in product status with 818 units in stock. Equivalent and substitute parts are identified based on matching capacitance, package type, mounting configuration, and terminal style while allowing for voltage rating variations within acceptable application parameters.

Substiute Parts

CGS203U030R5L

Cornell Dubilier Electronics (CDE)In Stock: 912CGS203U030R5L Datasheet

Current PartRFQ

CGS203U063R5L

Cornell Dubilier Electronics (CDE)In Stock: 789CGS203U063R5L Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CGS203U030R5L are identified based on the following substitution criteria:

Matching Parameters (Required for Substitution):

• Capacitance: 20000 µF (exact match)
• Package Type: Radial, Can - Screw Terminals (exact match)
• Mounting Type: Chassis Mount (exact match)
• Physical Dimensions: 1.375" Dia × 5.625" Height (exact match)
• Series: CGS (same manufacturer series)
• Polarization: Polar (exact match)
• Operating Temperature Range: -40°C to 85°C (exact match)
• RoHS Status: ROHS3 Compliant (exact match)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match)

Variable Parameters (Allowed to Differ):

• Voltage - Rated: May be higher than the main part
• ESR @ 120Hz: May vary within acceptable limits
• Ripple Current: May vary based on voltage rating
• Lifetime @ Temperature: Consistent at 2000 Hrs @ 85°C

The CGS203U063R5L qualifies as a substitute because it maintains all matching parameters while offering an upgraded voltage rating of 63 V, making it suitable for applications requiring higher voltage tolerance within the same physical and electrical envelope.

Parameter Comparison

Engineering Selection Recommendations

CGS203U030R5L Selection Criteria:

• Applications operating at or below 30 V DC
• Designs where lower ESR (13 mOhm @ 120Hz) is beneficial
• Systems requiring maximum ripple current handling at 30 V (11 A @ 120 Hz, 14.3 A @ 10 kHz)
• Cost-optimized designs where voltage headroom is not required

CGS203U063R5L Selection Criteria:

• Applications requiring voltage margin above 30 V up to 63 V DC
• Designs where component reliability is enhanced through voltage derating
• Systems where higher voltage tolerance provides design flexibility
• Circuits where the 2 mOhm ESR increase is acceptable
• Applications where ripple current requirements are within 9.3 A @ 120 Hz or 12.09 A @ 10 kHz

Both parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and identical physical dimensions for direct mechanical substitution. Both are Active products with current inventory availability. Selection between these parts depends solely on the circuit's voltage requirements and ripple current specifications.

Frequently Asked Questions (FAQ)

Q: Can CGS203U063R5L replace CGS203U030R5L in any application?

A: The CGS203U063R5L can replace the CGS203U030R5L in applications where the circuit voltage does not exceed 30 V. The higher 63 V rating provides voltage margin and does not degrade performance in lower-voltage circuits. However, the ripple current capacity is reduced (9.3 A @ 120 Hz vs. 11 A @ 120 Hz), so applications requiring maximum ripple current at 30 V should use the original CGS203U030R5L.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both CGS203U030R5L and CGS203U063R5L have identical physical dimensions: 1.375" diameter (34.93 mm) and 5.625" maximum seated height (142.88 mm). Both use screw terminals and are chassis-mount configurations, allowing direct mechanical substitution.

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

A: The CGS203U030R5L has an ESR of 13 mOhm @ 120Hz, while the CGS203U063R5L has an ESR of 15 mOhm @ 120Hz. This 2 mOhm difference is a result of the higher voltage rating and does not significantly impact general-purpose applications.

Q: Do both parts have the same operating temperature range?

A: Yes. Both CGS203U030R5L and CGS203U063R5L operate across -40°C to 85°C with a rated lifetime of 2000 hours at 85°C. Temperature performance is identical between the two parts.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, have MSL 1 (Unlimited) moisture sensitivity rating, and are REACH unaffected. Compliance status is identical.

Q: Which part should be used if the application voltage is unknown?

A: The CGS203U063R5L should be selected for applications where voltage requirements are uncertain, as the higher 63 V rating provides design margin and protects against voltage transients or future design modifications.

Q: Can these parts be used interchangeably in existing designs?

A: Mechanical and electrical interchangeability is confirmed for applications operating at or below 30 V. The screw terminal connections, chassis-mount configuration, and identical physical envelope allow direct substitution. Verify that ripple current requirements do not exceed 9.3 A @ 120 Hz (CGS203U063R5L limit) before substitution.