ALS71A122DF450 Equivalent & Substitute Parts

Part Overview

The ALS71A122DF450 is a 1200 µF, 450 V aluminum electrolytic capacitor manufactured by KEMET in the ALS71 series. This radial, can-style capacitor with screw terminals is designed for general-purpose applications requiring high capacitance and voltage ratings. The part is currently Active in product status with 1063 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design flexibility within specified tolerance ranges.

Substiute Parts

ALS71A122DF450

KEMETIn Stock: 1113ALS71A122DF450 Datasheet

Current PartRFQ

ALS70A122DF450

KEMETIn Stock: 874ALS70A122DF450 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALS71A122DF450 are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Electrical Parameters (Must Match):

• Capacitance: 1200 µF
• Voltage Rating: 450 V
• Tolerance: ±20%
• ESR @ 100Hz: 146 mOhm
• Lifetime @ 85°C: 11000 Hrs
• Operating Temperature Range: -40°C ~ 85°C
• Ripple Current @ 100 Hz: 5.3 A
• Ripple Current @ 10 kHz: 10.6 A

Mechanical Parameters (Must Match):

• Package / Case: Radial, Can - Screw Terminals
• Mounting Type: Chassis Mount
• Lead Spacing: 0.504" (12.80mm)
• Size / Dimension: 1.417" Dia (36.00mm)
• Height - Seated (Max): 4.213" (107.00mm)
• Polarization: Polar

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The ALS70A122DF450 is a direct parametric equivalent to the ALS71A122DF450. Both parts are manufactured by KEMET and share identical electrical specifications, mechanical dimensions, and compliance certifications. The primary difference is the series designation (ALS71 versus ALS70), which reflects different product generations within KEMET's aluminum electrolytic capacitor portfolio.

Both parts maintain Active product status and are ROHS3 compliant with REACH Unaffected classification. The ALS70A122DF450 has 809 units in stock compared to 1063 units for the ALS71A122DF450. Selection between these parts should be based on availability, lead time requirements, and inventory management priorities, as all electrical and mechanical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A122DF450 be used as a direct replacement for the ALS71A122DF450?

A: Yes. The ALS70A122DF450 meets all electrical and mechanical parameter requirements for direct substitution. Both parts have identical capacitance (1200 µF), voltage rating (450 V), ESR (146 mOhm @ 100Hz), ripple current ratings, physical dimensions, and screw terminal configuration. Both are ROHS3 compliant and REACH unaffected.

Q: What is the difference between the ALS71 and ALS70 series?

A: The ALS71 and ALS70 are different product series within KEMET's aluminum electrolytic capacitor line. For the 1200 µF, 450 V specification, both series provide identical electrical performance and physical form factor. The series designation reflects product generation or manufacturing process differences that do not affect functional equivalence.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the ALS71A122DF450 and ALS70A122DF450 have identical dimensions: 1.417" diameter (36.00mm), 4.213" maximum seated height (107.00mm), and 0.504" lead spacing (12.80mm). Both use screw terminals and are chassis mount components.

Q: Do both parts have the same lifetime rating?

A: Yes. Both parts are rated for 11000 hours at 85°C operating temperature. The operating temperature range for both is -40°C to 85°C.

Q: What compliance certifications apply to both parts?

A: Both the ALS71A122DF450 and ALS70A122DF450 are ROHS3 compliant, REACH unaffected, and have Moisture Sensitivity Level 1 (unlimited). Both carry EAR99 ECCN classification and HTSUS code 8532.22.0055.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The identical electrical specifications, mechanical dimensions, and terminal configuration allow these parts to be used interchangeably in designs specified for 1200 µF, 450 V aluminum electrolytic capacitors with screw terminals and chassis mount configuration.