ALS70H122DF450 Equivalent & Substitute Parts

Part Overview

The ALS70H122DF450 is a 1200 µF, 450 V aluminum electrolytic capacitor manufactured by KEMET in the ALS70 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 when inventory constraints, supply chain disruptions, or procurement requirements necessitate alternative sourcing while maintaining equivalent electrical and mechanical performance.

Substiute Parts

ALS70H122DF450

KEMETIn Stock: 1217ALS70H122DF450 Datasheet

Current PartRFQ

ALS70A122DF450

KEMETIn Stock: 874ALS70A122DF450 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALS70H122DF450 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ALS70A122DF450 qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Identical capacitance value: 1200 µF
• Identical rated voltage: 450 V
• Identical tolerance: ±20%
• Identical ESR @ 100Hz: 146 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: 93 mOhms

Mechanical Parameter Equivalence:

• Identical lead spacing: 12.80 mm
• Identical diameter: 36.00 mm
• Identical seated height: 107.00 mm
• Identical package configuration: Radial, Can - Screw Terminals
• Identical mounting type: Chassis Mount

Compliance Equivalence:

• Both parts maintain Active product status
• Both parts are ROHS3 Compliant
• Both parts are REACH Unaffected
• Both parts carry identical MSL rating: 1 (Unlimited)

The substitution is based solely on the ALS70 series platform, with the primary distinction being the base product number designation (ALS70H versus ALS70A), which does not alter electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS70H122DF450 and ALS70A122DF450 are Active products manufactured by KEMET with full regulatory compliance. Selection between these parts is based on availability and procurement requirements rather than technical differentiation.

ALS70H122DF450 is the primary specification with 1137 pieces in current inventory stock.

ALS70A122DF450 serves as a direct parametric equivalent with 809 pieces in current inventory stock.

Both parts maintain identical electrical performance, mechanical dimensions, and compliance certifications. The base product number designation (H versus A) does not affect circuit performance, thermal characteristics, or reliability metrics. Selection may be determined by supply chain status, lead time requirements, or inventory allocation policies.

Frequently Asked Questions (FAQ)

Q: Are ALS70H122DF450 and ALS70A122DF450 electrically interchangeable?

A: Yes. Both parts carry identical electrical specifications including capacitance (1200 µF), rated voltage (450 V), ESR (146 mOhm @ 100Hz), ripple current ratings, and operating temperature range (-40°C to 85°C). They are direct electrical equivalents.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts share identical mechanical specifications: 36.00 mm diameter, 107.00 mm seated height, 12.80 mm lead spacing, and radial can configuration with screw terminals. They are mechanically interchangeable in chassis mount applications.

Q: What is the difference between the ALS70H and ALS70A base product numbers?

A: The base product number designation does not reflect differences in electrical performance, thermal characteristics, or reliability. Both designations represent the same ALS70 series platform with identical parametric specifications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both ALS70H122DF450 and ALS70A122DF450 are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these capacitors?

A: Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

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

A: Yes. Both parts are rated for 5.3 A ripple current at 100 Hz and 10.6 A ripple current at 10 kHz, supporting general-purpose filtering and energy storage applications with moderate to high ripple current demands.

Q: What is the expected operational lifetime of these capacitors?

A: Both parts are rated for 11000 hours of operation at 85°C, establishing the expected service life under maximum temperature conditions. Actual lifetime extends significantly at lower operating temperatures.