CGS203U040V5L Equivalent & Substitute Parts

Part Overview

The CGS203U040V5L is a 20000 µF, 40 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 production with 1000 pieces in stock. Substitute parts are identified when circuit designs require voltage rating upgrades, inventory constraints occur, or system specifications demand higher voltage margins while maintaining identical capacitance and physical form factors.

Substiute Parts

CGS203U040V5L

Cornell Dubilier Electronics (CDE)In Stock: 1087CGS203U040V5L Datasheet

Current PartRFQ

CGS203U050V5L

Cornell Dubilier Electronics (CDE)In Stock: 968CGS203U050V5L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CGS203U040V5L is determined by strict adherence to the following electrical and mechanical parameters:

Fixed Parameters (Must Match Exactly):

• Capacitance: 20000 µF
• ESR: 14 mOhm @ 120 Hz
• Lifetime @ Temperature: 2000 Hrs @ 85°C
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: Radial, Can - Screw Terminals
• Size / Dimension: 2.000" Dia (50.80 mm)
• Height - Seated (Max): 5.625" (142.88 mm)
• Mounting Type: Chassis Mount
• Series: CGS
• Manufacturer: Cornell Dubilier Electronics (CDE)

Variable Parameters (Allowed to Differ):

• Voltage - Rated: Higher voltage ratings are acceptable substitutes
• Ripple Current @ Low Frequency: Minor variations acceptable within thermal and ESR constraints
• Ripple Current @ High Frequency: Minor variations acceptable within thermal and ESR constraints

The CGS203U050V5L qualifies as a direct substitute because it maintains identical capacitance, ESR, thermal lifetime, operating temperature range, physical dimensions, and mounting configuration while providing an elevated voltage rating of 50 V.

Parameter Comparison

Engineering Selection Recommendations

CGS203U040V5L (Original Part):

• Select when circuit design specifies exactly 40 V rated voltage
• Suitable for applications with defined voltage margins and no requirement for higher voltage headroom
• Product status: Active with adequate inventory (1000 pieces)
• Full ROHS3 compliance and REACH unaffected status confirmed

CGS203U050V5L (Substitute Part):

• Select when higher voltage rating provides system-level benefits or design margin improvements
• Identical electrical performance in ESR, capacitance, and thermal characteristics
• Maintains identical physical form factor and screw terminal configuration for direct mechanical compatibility
• Product status: Active with available inventory (920 pieces)
• Full ROHS3 compliance and REACH unaffected status confirmed
• Ripple current ratings remain within acceptable operational parameters

Both parts are manufactured by Cornell Dubilier Electronics in the CGS series and carry identical compliance certifications (ROHS3, REACH unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can CGS203U050V5L replace CGS203U040V5L in all applications?

A: The CGS203U050V5L is a direct mechanical and electrical substitute for the CGS203U040V5L. Both parts share identical capacitance (20000 µF), ESR (14 mOhm @ 120 Hz), thermal lifetime (2000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), physical dimensions (2.000" Dia × 5.625" height), and screw terminal configuration. The 50 V rated voltage of the substitute part is higher than the original 40 V specification, which is compatible with any circuit designed for 40 V operation.

Q: What are the physical compatibility considerations?

A: Both the CGS203U040V5L and CGS203U050V5L are housed in identical radial, can-style packages with screw terminals. Diameter is 2.000 inches (50.80 mm) and seated height is 5.625 inches (142.88 mm) for both parts. Mounting type is chassis mount for both. No mechanical modifications or board layout changes are required when substituting between these parts.

Q: Are there electrical performance differences between these parts?

A: The primary electrical difference is the voltage rating: 40 V for the CGS203U040V5L and 50 V for the CGS203U050V5L. Both parts maintain identical ESR of 14 mOhm @ 120 Hz. Ripple current ratings show minor variations: the 40 V part is rated 13.6 A @ 120 Hz and 17.68 A @ 10 kHz, while the 50 V part is rated 13.2 A @ 120 Hz and 17.16 A @ 10 kHz. These variations remain within acceptable operational parameters for general-purpose applications.

Q: What compliance certifications apply to both parts?

A: Both CGS203U040V5L and CGS203U050V5L are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (unlimited) for both parts. HTSUS classification is 8532.22.0055 for both.

Q: When should I select the 50 V substitute over the original 40 V part?

A: Select the CGS203U050V5L when system design benefits from higher voltage margin, when inventory of the 40 V part is constrained, or when standardizing on a single higher-voltage component across multiple product lines. The substitute provides identical performance with enhanced voltage headroom.