ALS71A511DA400 Equivalent & Substitute Parts

Part Overview

The ALS71A511DA400 is a 510 µF, 400 V aluminum electrolytic capacitor manufactured by KEMET, featuring radial can construction with screw terminals. This component is classified as an active product suitable for general-purpose applications requiring high-voltage energy storage and filtering. The part is designed for chassis mount installation with a rated lifetime of 11,000 hours at 85°C operating temperature.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and ensure project continuity when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

ALS71A511DA400

KEMETIn Stock: 1195ALS71A511DA400 Datasheet

Current PartRFQ

ALS70A511DA400

KEMETIn Stock: 815ALS70A511DA400 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS71A511DA400 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ALS70A511DA400 qualifies as a parametric equivalent based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Capacitance: 510 µF
• Voltage Rating: 400 V
• Tolerance: ±20%
• ESR @ 100 Hz: 304 mOhm
• Lifetime @ 85°C: 11,000 Hrs
• Operating Temperature Range: -40°C to 85°C
• Ripple Current @ 100 Hz: 3.1 A
• Ripple Current @ 10 kHz: 6.9 A
• Impedance: 172 mOhms

Mechanical Parameters (Must Match Exactly):

• Package Type: Radial, Can - Screw Terminals
• Mounting Type: Chassis Mount
• Lead Spacing: 0.504" (12.80 mm)
• Diameter: 1.417" (36.00 mm)
• Height (Seated Max): 2.126" (54.00 mm)

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN: EAR99

The primary difference between the main part and substitute is the series designation (ALS71 versus ALS70), which reflects internal design evolution within KEMET's product line while maintaining full parametric compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71A511DA400 and ALS70A511DA400 are active products manufactured by KEMET with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain considerations rather than technical performance differences.

Selection Criteria:

1. Primary Selection: ALS71A511DA400 should be selected when available, as it represents the current series designation within KEMET's product line.

2. Substitute Selection: ALS70A511DA400 is a direct parametric equivalent and may be selected when the primary part is unavailable or when supply chain optimization requires alternative sourcing.

3. Compliance Assurance: Both parts maintain identical regulatory compliance across RoHS3, REACH, and export control classifications (EAR99), ensuring no additional compliance documentation or design review is required when substituting between these parts.

4. Inventory Considerations: Current inventory status shows 1,093 units of ALS71A511DA400 and 792 units of ALS70A511DA400 available as new original stock.

Frequently Asked Questions (FAQ)

Q: Can ALS70A511DA400 be used as a direct replacement for ALS71A511DA400?

A: Yes. The ALS70A511DA400 is a parametric equivalent with identical electrical specifications, mechanical dimensions, and compliance certifications. Direct substitution is permissible without circuit redesign or performance degradation.

Q: Are there any differences in physical dimensions between these parts?

A: No. Both parts share identical lead spacing (0.504" / 12.80 mm), diameter (1.417" / 36.00 mm), and seated height (2.126" / 54.00 mm). PCB layout and mechanical mounting requirements remain unchanged.

Q: What is the difference between the ALS71 and ALS70 series?

A: The series designation reflects internal product line evolution within KEMET's manufacturing portfolio. Both series maintain identical performance characteristics for this specific part number configuration.

Q: Are both parts RoHS3 compliant?

A: Yes. Both ALS71A511DA400 and ALS70A511DA400 are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level), suitable for unrestricted storage and handling.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Identical electrical parameters (capacitance, voltage, ESR, ripple current, impedance) and mechanical specifications (package type, mounting, dimensions) ensure full interchangeability without circuit modification.

Q: What is the rated lifetime of these capacitors?

A: Both parts are rated for 11,000 hours at 85°C operating temperature, with an operating temperature range of -40°C to 85°C.

Q: Are there any export restrictions on these parts?

A: Both parts are classified as EAR99 under export control regulations, indicating standard commercial classification with no additional export licensing requirements.