ALS71U622NJ450 Equivalent & Substitute Parts

Part Overview

The ALS71U622NJ450 is a 6200 µF, 450 V aluminum electrolytic capacitor manufactured by KEMET in the ALS71 series. This component features radial, can-style construction with screw terminals, designed for chassis mount applications requiring general-purpose energy storage and filtering. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified to address inventory availability, supply chain continuity, or equivalent performance requirements in applications where the primary part number is unavailable.

Substiute Parts

ALS71U622NJ450

KEMETIn Stock: 777ALS71U622NJ450 Datasheet

Current PartRFQ

ALS70A622NJ450

KEMETIn Stock: 1402ALS70A622NJ450 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALS71U622NJ450 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 6200 µF (exact match required)
• Voltage Rating: 450 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package Type: Radial, Can - Screw Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Lead Spacing: 31.80 mm (exact match required)
• Physical Dimensions: 77.00 mm diameter, 117.00 mm height (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• ESR @ 100Hz: Substitute parts may vary within acceptable engineering tolerances
• Ripple Current ratings: Substitute parts must meet or exceed specified values
• Impedance: Substitute parts must meet or exceed specified values
• Lifetime @ 85°C: Substitute parts must meet or exceed 20000 hours

The ALS70A622NJ450 qualifies as a parametric equivalent based on full compliance with all mandatory matching parameters and acceptable variation in ESR specification.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71U622NJ450 and ALS70A622NJ450 maintain Active product status with full regulatory compliance. Selection between these parts is based on the following criteria:

ALS71U622NJ450 (Primary Selection):

• ESR specification of 36 mOhm @ 100Hz
• Current inventory: 692 pieces
• Preferred when ESR performance at the specified level is required

ALS70A622NJ450 (Substitute Selection):

• ESR specification of 37 mOhm @ 100Hz (1 mOhm higher than primary)
• Current inventory: 1318 pieces
• Functionally equivalent for applications where the 1 mOhm ESR variance is within system tolerance
• Preferred when supply availability is prioritized

Both parts carry identical RoHS3 compliance, REACH unaffected status, and MSL rating. Physical footprint, electrical ratings, and thermal characteristics are fully interchangeable. Selection should be based on inventory availability and specific ESR requirements of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A622NJ450 be used as a direct replacement for the ALS71U622NJ450?

A: Yes. The ALS70A622NJ450 is a parametric equivalent with identical capacitance, voltage rating, tolerance, physical dimensions, and mounting configuration. The only difference is ESR at 100Hz (37 mOhm versus 36 mOhm), a variance of 1 mOhm. This substitution is valid for applications where this ESR difference falls within acceptable circuit performance margins.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution requires exact matching of: capacitance (6200 µF), voltage rating (450 V), tolerance (±20%), package type (Radial, Can - Screw Terminals), mounting type (Chassis Mount), lead spacing (31.80 mm), physical dimensions (77.00 mm diameter × 117.00 mm height), operating temperature range (-40°C to 85°C), and polarization (Polar). ESR and ripple current specifications may vary within acceptable engineering tolerances.

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

A: No. Both parts are RoHS3 compliant, REACH unaffected, carry MSL rating of 1 (Unlimited), and maintain Active product status. Regulatory and environmental compliance is identical.

Q: What is the physical footprint compatibility?

A: Both parts are identical in physical dimensions: 77.00 mm diameter, 117.00 mm seated height, and 31.80 mm lead spacing. Chassis mount screw terminal configuration is identical. Direct mechanical substitution is supported without PCB or mechanical redesign.

Q: How do the ripple current ratings compare?

A: Ripple current specifications are identical: 15.9 A @ 100 Hz and 22.9 A @ 10 kHz. Both parts support the same thermal and electrical stress conditions in the application circuit.

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

A: The ESR difference (36 mOhm primary versus 37 mOhm substitute) represents a 2.8% variance. This difference affects heat dissipation and voltage ripple characteristics. Substitution is valid when circuit design margins accommodate this variance. Applications with tight ESR specifications should verify compatibility with the substitute part's ESR value.

Q: Are both parts available in the same packaging format?

A: Yes. Both parts are supplied in Bulk packaging as Radial, Can - Screw Terminals for Chassis Mount applications. Packaging format and terminal configuration are identical.