ALA7DF331DC500 Equivalent & Substitute Parts

Part Overview

The ALA7DF331DC500 is a 330 µF, 500 V aluminum electrolytic capacitor manufactured by KEMET in the ALA7D series. This radial, can-style snap-in capacitor is designed for through-hole mounting and is rated for automotive applications under AEC-Q200 standards. The part is currently active in production with 1115 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

ALA7DF331DC500

KEMETIn Stock: 1166ALA7DF331DC500 Datasheet

Current PartRFQ

ALA7DA331DC500

KEMETIn Stock: 1947ALA7DA331DC500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALA7DF331DC500 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 500 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Physical Dimensions: 1.378" Dia (35.00mm) and 1.457" Height (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Lifetime @ Temperature: 15000 Hrs @ 85°C (exact match required)
• Compliance: AEC-Q200, ROHS3 Compliant (exact match required)

Performance Parameters (Allowed Variation):

• ESR @ 100Hz: Substitute may differ from 757 mOhm
• Ripple Current @ Low Frequency: Substitute may differ from 1.64 A @ 100 Hz
• Ripple Current @ High Frequency: Substitute may differ from 4.62 A @ 10 kHz
• Impedance: Substitute may differ from 331 mOhms

The ALA7DA331DC500 qualifies as a parametric equivalent because it maintains all mandatory matching parameters while offering improved electrical performance characteristics in ripple current and impedance specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the ALA7DF331DC500 and ALA7DA331DC500 are active production parts manufactured by KEMET within the ALA7D series. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance certification, confirming suitability for regulated automotive applications.

The ALA7DA331DC500 substitute provides equivalent functional performance with enhanced ripple current handling capacity and lower impedance characteristics. The substitute maintains identical voltage rating, capacitance value, tolerance, physical dimensions, and thermal specifications, ensuring direct functional compatibility in circuit applications.

Selection between these parts should be based on circuit requirements for ripple current capacity and impedance performance, as well as inventory availability and procurement lead times. Both parts satisfy the same electrical and mechanical interface requirements for through-hole mounting in radial, can-style snap-in configurations.

Frequently Asked Questions (FAQ)

Q: Can the ALA7DA331DC500 be used as a direct replacement for the ALA7DF331DC500?

A: Yes. Both parts are manufactured by KEMET in the ALA7D series with identical capacitance (330 µF), voltage rating (500 V), tolerance (±20%), physical dimensions (1.378" Dia × 1.457" Height), mounting type (through-hole), and package style (radial, can - snap-in). Both carry AEC-Q200 automotive qualification and ROHS3 compliance. The substitute offers improved ripple current performance and lower impedance.

Q: What are the key differences between these two part numbers?

A: The primary differences are in performance characteristics. The ALA7DA331DC500 provides higher ripple current capacity (2.5 A @ 100 Hz versus 1.64 A, and 5.18 A @ 10 kHz versus 4.62 A) and lower impedance (196.8 mOhms versus 331 mOhms). All other electrical and mechanical specifications remain identical.

Q: Are there any physical compatibility concerns when substituting these parts?

A: No. Both parts share identical physical dimensions (1.378" diameter, 1.457" maximum seated height) and use the same radial, can-style snap-in package. PCB footprints and mounting hardware requirements are identical.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both the ALA7DF331DC500 and ALA7DA331DC500 carry AEC-Q200 qualification for automotive applications and are ROHS3 compliant, meeting regulated automotive supply chain requirements.

Q: Which part should be selected for new designs?

A: Selection should be based on circuit ripple current requirements and impedance specifications. The ALA7DA331DC500 is suitable for applications requiring higher ripple current handling or lower impedance performance. Both parts are active production items with established supply availability.