ALA7DF471DC400 Equivalent & Substitute Parts

Part Overview

The ALA7DF471DC400 is a 470 µF, 400 V aluminum electrolytic capacitor manufactured by KEMET in the ALA7D series. This radial, can-style snap-in capacitor is designed for through-hole mounting applications and is rated for automotive use under AEC-Q200 standards. The component is currently in active production status with 274,082 units in stock.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives within the same electrical and mechanical parameter envelope.

Substiute Parts

ALA7DF471DC400

KEMETIn Stock: 274182ALA7DF471DC400 Datasheet

Current PartRFQ

ALA7DA471DC400

KEMETIn Stock: 1527ALA7DA471DC400 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALA7DF471DC400 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Capacitance: 470 µF
• Voltage Rating: 400 V
• Tolerance: ±20%
• ESR @ 100Hz: 379.8 mOhm
• Lifetime @ 85°C: 15000 Hrs
• Operating Temperature Range: -40°C to +85°C

Mechanical Parameters (Must Match):

• Package Type: Radial, Can - Snap-In
• Mounting Type: Through Hole
• Physical Dimensions: 1.378" Dia (35.00mm), Height 1.457" (37.00mm)

Compliance Parameters (Must Match):

• AEC-Q200 Automotive Rating
• RoHS3 Compliance
• REACH Unaffected Status

The ALA7DA471DC400 qualifies as a parametric equivalent based on identical electrical specifications, mechanical form factor, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the ALA7DF471DC400 and ALA7DA471DC400 are active production components manufactured by KEMET within the ALA7D series. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance certification, making them suitable for automotive applications requiring regulatory compliance.

The ALA7DF471DC400 is the primary selection due to superior inventory availability (274,082 units) and higher ripple current ratings at both 100 Hz (2.48 A vs. 2.18 A) and 10 kHz (6.12 A vs. 5.4 A). The lower impedance specification (193.6 mOhms vs. 233.4 mOhms) provides additional performance margin in high-frequency filtering applications.

The ALA7DA471DC400 serves as a direct parametric equivalent when ALA7DF471DC400 availability is constrained. The substitute part maintains identical electrical specifications for capacitance, voltage rating, tolerance, ESR, and lifetime rating. Mechanical compatibility is confirmed through identical package dimensions and through-hole mounting configuration. The reduced ripple current and increased impedance of the substitute part remain within acceptable operational parameters for applications designed to the ALA7DF471DC400 specification.

Selection between these parts should be based on availability and supply chain requirements rather than electrical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can ALA7DA471DC400 be used as a direct replacement for ALA7DF471DC400?

A: Yes. Both parts are KEMET ALA7D series components with identical capacitance (470 µF), voltage rating (400 V), tolerance (±20%), ESR (379.8 mOhm @ 100Hz), and lifetime rating (15000 Hrs @ 85°C). Mechanical dimensions and through-hole snap-in package are identical. Both carry AEC-Q200 automotive qualification and ROHS3 compliance.

Q: What are the differences between these two parts?

A: The ALA7DA471DC400 exhibits lower ripple current ratings (2.18 A @ 100 Hz and 5.4 A @ 10 kHz compared to 2.48 A and 6.12 A respectively) and higher impedance (233.4 mOhms vs. 193.6 mOhms). These differences do not affect substitution eligibility for applications designed to the ALA7DF471DC400 specification.

Q: Are there any mounting or PCB layout differences?

A: No. Both parts use identical through-hole radial, can-style snap-in packaging with matching lead spacing and physical dimensions (1.378" diameter, 1.457" maximum seated height). PCB footprints and mounting procedures are identical.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both ALA7DF471DC400 and ALA7DA471DC400 are AEC-Q200 rated and ROHS3 compliant, meeting automotive industry standards for reliability and environmental compliance.

Q: Which part should be selected for new designs?

A: The ALA7DF471DC400 is recommended for new designs due to higher inventory availability and superior ripple current performance. The ALA7DA471DC400 is appropriate for designs where component availability is the primary constraint.

Q: Is there a performance penalty when using the ALA7DA471DC400 substitute?

A: The substitute part maintains all critical electrical parameters (capacitance, voltage, tolerance, ESR, lifetime). The reduced ripple current and increased impedance represent lower performance margins but do not constitute functional incompatibility for applications designed to the primary part specification.