ALS80H821DF500 Equivalent & Substitute Parts

Part Overview

The ALS80H821DF500 is a 820 µF, 500 V aluminum electrolytic capacitor with radial, can-style screw terminals manufactured by KEMET. This component is classified as Active product status and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturing transitions within the same product family while maintaining identical electrical and mechanical specifications.

Substiute Parts

ALS80H821DF500

KEMETIn Stock: 1114ALS80H821DF500 Datasheet

Current PartRFQ

ALS80A821DF500

KEMETIn Stock: 982ALS80A821DF500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALS80H821DF500 are identified based on strict parametric equivalence within the KEMET ALS80 series. Substitution is valid when all of the following criteria are met:

Critical Substitution Parameters:

• Capacitance: 820 µF (exact match required)
• Voltage Rating: 500 V (exact match required)
• Tolerance: ±20% (exact match required)
• ESR @ 100Hz: 261 mOhm (exact match required)
• Lifetime @ 105°C: 6000 Hrs (exact match required)
• Operating Temperature Range: -40°C to 105°C (exact match required)
• Ripple Current @ 100 Hz: 4.1 A (exact match required)
• Ripple Current @ 10 kHz: 8.9 A (exact match required)
• Impedance: 194 mOhms (exact match required)
• Lead Spacing: 12.80 mm (exact match required)
• Physical Dimensions: 36.00 mm diameter, 107.00 mm height (exact match required)
• Package Type: Radial, Can - Screw Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The ALS80H821DF500 and ALS80A821DF500 are both members of the KEMET ALS80 series and share identical electrical and mechanical specifications. The difference between these part numbers reflects internal KEMET product line designations (H versus A variant) but does not alter functional performance or physical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS80H821DF500 and ALS80A821DF500 are Active product status components manufactured by KEMET and are ROHS3 compliant with REACH unaffected status. Selection between these parts is based on availability and supply chain requirements rather than technical performance differences.

The ALS80H821DF500 currently maintains 1048 pieces in new original stock inventory. The ALS80A821DF500 maintains 906 pieces in new original stock inventory. Both parts meet identical electrical specifications and physical dimensions, ensuring direct functional interchangeability in chassis-mounted applications requiring 820 µF capacitance at 500 V rated voltage.

Component selection should prioritize inventory availability and lead time requirements. Both parts are suitable for general-purpose high-voltage filtering and energy storage applications within the specified operating temperature range of -40°C to 105°C.

Frequently Asked Questions (FAQ)

Q: Can ALS80A821DF500 be used as a direct replacement for ALS80H821DF500?

A: Yes. Both parts are parametrically identical across all electrical and mechanical specifications. The difference in part number designation (H versus A) reflects internal KEMET product line variants but does not affect functional performance, physical dimensions, or electrical characteristics. Direct substitution is valid for all applications.

Q: What are the critical parameters that must match for substitution?

A: Substitution requires exact matching of capacitance (820 µF), voltage rating (500 V), tolerance (±20%), ESR (261 mOhm @ 100Hz), lifetime rating (6000 Hrs @ 105°C), operating temperature range (-40°C to 105°C), ripple current specifications (4.1 A @ 100 Hz and 8.9 A @ 10 kHz), impedance (194 mOhms), lead spacing (12.80 mm), physical dimensions (36.00 mm diameter, 107.00 mm height), package type (Radial, Can - Screw Terminals), and mounting configuration (Chassis Mount).

Q: Are there any compliance or certification differences between these parts?

A: No. Both ALS80H821DF500 and ALS80A821DF500 are ROHS3 compliant, REACH unaffected, and carry identical environmental and regulatory certifications. Both parts are classified as Active product status.

Q: What is the physical compatibility consideration for screw terminal connections?

A: Both parts feature identical screw terminal configurations with 12.80 mm lead spacing. Physical mounting dimensions are identical: 36.00 mm diameter and 107.00 mm maximum seated height. Chassis mount installations require no modification when substituting between these parts.

Q: How do the ripple current ratings affect component selection?

A: Ripple current ratings specify the maximum AC current the capacitor can handle at specified frequencies. Both parts are rated for 4.1 A at 100 Hz (low frequency) and 8.9 A at 10 kHz (high frequency). Application circuits must not exceed these current specifications. Selection between ALS80H821DF500 and ALS80A821DF500 does not alter ripple current capability.

Q: What is the significance of the 261 mOhm ESR specification?

A: Equivalent Series Resistance (ESR) at 261 mOhm @ 100Hz represents the internal resistance of the capacitor at the specified frequency. This parameter affects voltage drop across the capacitor under load and heat generation. Both substitute parts maintain identical ESR specifications, ensuring equivalent thermal and electrical performance in circuit applications.