ALS71H511DB450 Equivalent & Substitute Parts

Part Overview

The ALS71H511DB450 is an aluminum electrolytic capacitor manufactured by KEMET, rated at 510 µF capacitance with 450 V voltage rating and screw terminal connections. This component is classified as Active product status and is designed for general-purpose applications requiring high-voltage energy storage and filtering in chassis-mounted configurations.

Equivalent and substitute parts are identified when alternative components meet or exceed the electrical and mechanical specifications of the original part, enabling procurement flexibility, inventory optimization, and supply chain continuity without compromising circuit performance.

Substiute Parts

ALS71H511DB450

KEMETIn Stock: 816ALS71H511DB450 Datasheet

Current PartRFQ

ALS70A511DB450

KEMETIn Stock: 872ALS70A511DB450 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALS71H511DB450 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Capacitance: 510 µF (exact match required)
• Voltage Rating: 450 V (minimum, no downrating permitted)
• Tolerance: ±20% (matching tolerance band)
• ESR @ 100Hz: ≤337 mOhm (substitute ESR must not exceed original by more than 1 mOhm)
• Lifetime @ 85°C: 11000 Hrs (minimum requirement)
• Operating Temperature: -40°C to 85°C (full range coverage required)
• Ripple Current @ 100 Hz: ≥3.2 A (minimum specification)
• Ripple Current @ 10 kHz: ≥6.9 A (minimum specification)

Mechanical Equivalence Criteria:

• Package Type: Radial, Can - Screw Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Lead Spacing: 12.80 mm (exact match required)
• Diameter: 36.00 mm (exact match required)
• Height - Seated (Max): 64.00 mm (exact match required)

Compliance Criteria:

• RoHS3 Compliant status required
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Unaffected status required

The ALS70A511DB450 qualifies as a parametric equivalent substitute based on full compliance with all electrical, mechanical, and compliance criteria listed above.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71H511DB450 and ALS70A511DB450 are Active product status components manufactured by KEMET with full ROHS3 compliance and REACH Unaffected certification. Selection between these parts is based on availability and inventory status rather than technical performance differentiation.

The ALS70A511DB450 substitute part demonstrates electrical and mechanical equivalence with ESR variance of only 1 mOhm at 100 Hz, which is within acceptable engineering tolerance for aluminum electrolytic capacitor applications. Both components maintain identical rated voltage, capacitance, ripple current specifications, and thermal lifetime ratings.

Chassis-mounted screw terminal configurations are identical across both parts, ensuring direct mechanical interchangeability without PCB layout modification or mechanical redesign. Lead spacing, can diameter, and seated height specifications are identical, confirming footprint compatibility.

Both parts carry MSL Level 1 (Unlimited) moisture sensitivity classification, indicating no special storage or handling requirements beyond standard component practices.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A511DB450 be used as a direct replacement for the ALS71H511DB450?

A: Yes. The ALS70A511DB450 meets all electrical and mechanical specifications required for direct substitution. Capacitance, voltage rating, tolerance, ripple current ratings, operating temperature range, and physical dimensions are identical. ESR variance is 1 mOhm, which is within acceptable tolerance for this component category.

Q: Are there any differences in thermal performance between these two parts?

A: No. Both parts are rated for 11000 hours lifetime at 85°C operating temperature. Operating temperature range is identical at -40°C to 85°C for both components.

Q: Do these parts require different mounting procedures?

A: No. Both parts use identical Radial, Can - Screw Terminals package configuration with Chassis Mount mounting type. Lead spacing, diameter, and height specifications are identical, requiring no modification to mounting hardware or PCB layout.

Q: What is the significance of the 1 mOhm ESR difference?

A: The ESR (Equivalent Series Resistance) difference of 1 mOhm between ALS71H511DB450 (336 mOhm) and ALS70A511DB450 (337 mOhm) is negligible for general-purpose applications. Both values are measured at 100 Hz and represent less than 0.3% variance, which does not impact circuit performance in standard filtering and energy storage applications.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both ALS71H511DB450 and ALS70A511DB450 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: What is the MSL rating and does it affect storage?

A: Both parts carry MSL Level 1 (Unlimited) classification, indicating unlimited shelf life without special moisture control measures. Standard component storage practices are sufficient.

Q: Can these parts be used interchangeably in high-ripple-current applications?

A: Yes. Both parts are rated for identical ripple current specifications: 3.2 A at 100 Hz and 6.9 A at 10 kHz. Thermal and electrical performance under ripple current stress is equivalent.