ALA7DD331CE500 Equivalent & Substitute Parts

Part Overview

The ALA7DD331CE500 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 757 units in stock.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity. Alternative part numbers within the same electrical and mechanical parameter range ensure functional compatibility in circuit designs.

Substiute Parts

ALA7DD331CE500

KEMETIn Stock: 837ALA7DD331CE500 Datasheet

Current PartRFQ

ALA7DA331CE500

KEMETIn Stock: 1854ALA7DA331CE500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALA7DD331CE500 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 330 µF (exact match required)
• Rated voltage: 500 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating temperature range: -40°C to 85°C (exact match required)
• Lifetime rating: 13000 Hrs @ 85°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Physical dimensions: 1.181" Dia (30.00mm) × 1.850" Height (47.00mm) (exact match required)

Compliance & Certification:

• AEC-Q200 automotive rating (exact match required)
• RoHS3 compliance (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute part ALA7DA331CE500 meets all critical electrical and mechanical parameters. Variations in ripple current specifications and impedance values do not disqualify substitution, as these are performance characteristics within acceptable operating ranges for the specified capacitance and voltage class.

Parameter Comparison

Engineering Selection Recommendations

Both the ALA7DD331CE500 and ALA7DA331CE500 are active production parts manufactured by KEMET within the ALA7D series. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance, meeting regulatory requirements for automotive and industrial applications.

The ALA7DD331CE500 and ALA7DA331CE500 are electrically and mechanically equivalent. Selection between these parts should be based on:

1. Inventory Availability: The ALA7DA331CE500 has higher stock availability (1813 units versus 757 units), supporting shorter lead times and supply chain resilience.

2. Compliance Requirements: Both parts satisfy identical compliance certifications (AEC-Q200, ROHS3, REACH Unaffected, MSL 1).

3. Physical Compatibility: Both parts feature identical through-hole snap-in package dimensions (30.00mm diameter, 47.00mm height), ensuring direct mechanical substitution on PCB layouts.

4. Electrical Performance: Both parts deliver identical capacitance (330 µF), voltage rating (500 V), tolerance (±20%), ESR (750.6 mOhm @ 100Hz), and lifetime rating (13000 Hrs @ 85°C).

Either part is suitable for direct substitution in circuit designs requiring 330 µF, 500 V aluminum electrolytic capacitors with automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can the ALA7DA331CE500 be used as a direct replacement for the ALA7DD331CE500?

A: Yes. Both parts are manufactured by KEMET within the ALA7D series and share identical electrical specifications (330 µF, 500 V, ±20% tolerance, 750.6 mOhm ESR @ 100Hz, 13000 Hrs @ 85°C) and mechanical dimensions (30.00mm diameter, 47.00mm height). Both are AEC-Q200 rated and ROHS3 compliant. Direct substitution is supported without circuit redesign.

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

A: The ALA7DD331CE500 specifies 2.91 A @ 100 Hz and 7.14 A @ 10 kHz. The ALA7DA331CE500 specifies 2.21 A @ 100 Hz and 4.59 A @ 10 kHz. These are performance characteristics within the same capacitance and voltage class. Selection should be based on circuit ripple current requirements.

Q: Do both parts fit the same PCB footprint?

A: Yes. Both parts are through-hole mounted radial, can-style snap-in capacitors with identical physical dimensions: 1.181" diameter (30.00mm) and 1.850" maximum seated height (47.00mm). PCB layout modifications are not required.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the ALA7DD331CE500 and ALA7DA331CE500 carry AEC-Q200 automotive qualification and are rated for operating temperatures from -40°C to 85°C with 13000-hour lifetime at 85°C. Both are approved for automotive circuit designs.

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

A: The ALA7DD331CE500 specifies 147 mOhms impedance, while the ALA7DA331CE500 specifies 234.6 mOhms impedance. Both parts maintain identical ESR (750.6 mOhm @ 100Hz). Impedance differences reflect manufacturing variations within the same product class and do not affect functional equivalence for standard capacitor applications.

Q: Which part should I select based on availability?

A: The ALA7DA331CE500 has higher current inventory (1813 units in stock versus 757 units). Selection for improved supply chain availability should favor the ALA7DA331CE500 without compromising electrical or mechanical performance.