ALS31A471DF450 Equivalent & Substitute Parts

Part Overview

The ALS31A471DF450 is a 470 µF, 450 V aluminum electrolytic capacitor with screw terminals, manufactured by KEMET. This component is classified as a radial, can-style capacitor designed for general-purpose applications requiring high voltage energy storage and filtering. The part maintains an active product status with 838 units in current inventory.

Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory constraints require component alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

ALS31A471DF450

KEMETIn Stock: 889ALS31A471DF450 Datasheet

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ALS30A471DF450

KEMETIn Stock: 864ALS30A471DF450 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The ALS31A471DF450 has one identified substitute part: ALS30A471DF450. This substitution is valid based on the following criteria:

Electrical Parameter Equivalence:

• Identical capacitance value: 470 µF
• Identical voltage rating: 450 V
• Identical tolerance: ±20%
• Identical ESR @ 100Hz: 235 mOhm
• Identical lifetime rating: 11000 Hrs @ 85°C
• Identical operating temperature range: -40°C to 85°C
• Identical ripple current specifications at both 100 Hz and 10 kHz
• Identical impedance: 155 mOhms

Mechanical Parameter Equivalence:

• Identical lead spacing: 12.80 mm
• Identical diameter: 36.00 mm
• Identical seated height: 105.00 mm
• Identical package type: Radial, Can - Screw Terminals

Compliance Equivalence:

• Both parts are ROHS3 Compliant
• Both parts are REACH Unaffected
• Both parts carry identical ECCN and HTSUS classifications

The substitute part differs only in series designation (ALS30A versus ALS31A), with no impact on functional performance or physical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS31A471DF450 and ALS30A471DF450 are active products manufactured by KEMET with full ROHS3 compliance and REACH unaffected status. The parts are electrically and mechanically identical across all specified parameters.

Selection between these parts should be based on inventory availability and lead time requirements. The ALS31A471DF450 currently maintains 838 units in stock, while the ALS30A471DF450 maintains 767 units in stock. Both parts are suitable for direct substitution in applications requiring 470 µF, 450 V aluminum electrolytic capacitors with screw terminal connections.

The mounting type designation difference (Chassis, Stud Mount versus Chassis Mount) does not affect functional compatibility, as both configurations support the same screw terminal interface and physical footprint.

Frequently Asked Questions (FAQ)

Q: Can ALS30A471DF450 be used as a direct replacement for ALS31A471DF450?

A: Yes. The ALS30A471DF450 is a direct substitute. All electrical parameters, mechanical dimensions, and compliance certifications are identical. The only difference is the series designation (ALS30A versus ALS31A), which does not affect performance or compatibility.

Q: Are there any differences in the screw terminal specifications between these parts?

A: No. Both parts use identical Radial, Can - Screw Terminal packaging with the same lead spacing of 12.80 mm. The terminal interface is fully compatible.

Q: Do both parts have the same physical footprint?

A: Yes. Both parts have identical dimensions: 36.00 mm diameter and 105.00 mm maximum seated height. They occupy the same physical space in circuit board layouts and chassis installations.

Q: What is the difference between "Chassis, Stud Mount" and "Chassis Mount" designations?

A: Both designations refer to the same mounting methodology using screw terminals for chassis or stud-based installation. The terminology difference does not indicate functional or physical incompatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both ALS31A471DF450 and ALS30A471DF450 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected based on current inventory?

A: Selection should be based on application requirements and lead time constraints. The ALS31A471DF450 has higher current inventory (838 units) compared to ALS30A471DF450 (767 units). Both parts are active products with equivalent availability.

Q: Are the electrical performance characteristics identical?

A: Yes. Both parts have identical capacitance (470 µF), voltage rating (450 V), ESR (235 mOhm @ 100Hz), ripple current ratings (4 A @ 100 Hz, 8.4 A @ 10 kHz), impedance (155 mOhms), and lifetime rating (11000 Hrs @ 85°C).