ALA7DC331DC500 Equivalent & Substitute Parts

Part Overview

The ALA7DC331DC500 is a 330 µF, 500 V aluminum electrolytic capacitor manufactured by KEMET in the ALA7D series. This radial, can-style snap-in component is designed for through-hole mounting in automotive applications requiring AEC-Q200 compliance. The part is currently active in production with 1084 units in stock. Equivalent substitute parts may be required due to inventory availability, lead time considerations, or specific application performance requirements within the allowed electrical and mechanical parameter ranges.

Substiute Parts

ALA7DC331DC500

KEMETIn Stock: 1166ALA7DC331DC500 Datasheet

Current PartRFQ

ALA7DA331DC500

KEMETIn Stock: 1947ALA7DA331DC500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALA7DC331DC500 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Capacitance: 330 µF
• Voltage Rating: 500 V
• Tolerance: ±20%
• Lifetime: 15000 Hrs @ 85°C
• Operating Temperature Range: -40°C ~ 85°C
• Polarization: Polar

Mechanical Parameters (Must Match):

• Package / Case: Radial, Can - Snap-In
• Mounting Type: Through Hole
• Size / Dimension: 1.378" Dia (35.00mm)
• Height - Seated (Max): 1.457" (37.00mm)

Compliance Parameters (Must Match):

• Ratings: AEC-Q200
• RoHS Status: ROHS3 Compliant
• Series: ALA7D

The substitute part ALA7DA331DC500 meets all these criteria and is therefore a direct parametric equivalent within the allowed substitution scope.

Parameter Comparison

Engineering Selection Recommendations

Both the ALA7DC331DC500 and ALA7DA331DC500 are active production parts manufactured by KEMET within the ALA7D series. Both components carry AEC-Q200 automotive qualification and ROHS3 compliance certification. Selection between these parts is based on inventory availability and lead time requirements, as all electrical, mechanical, and compliance parameters are identical. The substitute part ALA7DA331DC500 is a direct equivalent for applications requiring a 330 µF, 500 V aluminum electrolytic capacitor with snap-in through-hole mounting in automotive environments.

Frequently Asked Questions (FAQ)

Q: Can ALA7DA331DC500 be used as a direct replacement for ALA7DC331DC500?

A: Yes. Both parts are identical across all critical electrical parameters (capacitance, voltage rating, tolerance, ESR, lifetime), mechanical parameters (package type, dimensions, mounting style), and compliance certifications (AEC-Q200, ROHS3). They are interchangeable for circuit applications.

Q: Are there differences in ripple current ratings between these parts?

A: The ripple current specifications differ between the two parts. ALA7DC331DC500 is rated at 1.94 A @ 100 Hz and 3.65 A @ 10 kHz. ALA7DA331DC500 is rated at 2.5 A @ 100 Hz and 5.18 A @ 10 kHz. These differences do not affect substitution eligibility, as both parts meet the core electrical requirements for the 330 µF, 500 V specification.

Q: Do both parts have the same physical footprint?

A: Yes. Both parts have identical dimensions: 1.378" diameter (35.00mm) and maximum seated height of 1.457" (37.00mm). They are both radial, can-style snap-in components suitable for through-hole mounting on the same PCB layout.

Q: Are both parts suitable for automotive applications?

A: Yes. Both ALA7DC331DC500 and ALA7DA331DC500 carry AEC-Q200 automotive qualification and are rated for operating temperatures from -40°C to 85°C with 15000 hours lifetime at 85°C. Both are suitable for automotive circuit applications.

Q: What is the difference between the base product numbers ALA7DC and ALA7DA?

A: The base product numbers indicate different variants within the ALA7D series. However, for the 330 µF, 500 V specification with identical electrical and mechanical parameters, these variants are functionally equivalent and interchangeable.