ALS71H122DF450 Equivalent & Substitute Parts

Part Overview

The ALS71H122DF450 is a 1200 µF, 450 V aluminum electrolytic capacitor manufactured by KEMET, featuring radial can construction with screw terminals. This component is classified as Active product status and is designed for general-purpose applications requiring high-capacitance energy storage in high-voltage circuits. The part is ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

ALS71H122DF450

KEMETIn Stock: 876ALS71H122DF450 Datasheet

Current PartRFQ

ALS70A122DF450

KEMETIn Stock: 874ALS70A122DF450 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALS71H122DF450 is determined by strict equivalence across the following critical parameters:

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 to 85°C
• Ripple Current @ 100 Hz: 5.3 A
• Ripple Current @ 10 kHz: 10.6 A
• Impedance: 93 mOhms

Mechanical Parameters (Must Match):

• Lead Spacing: 12.80 mm
• Diameter: 36.00 mm
• Height - Seated (Max): 107.00 mm
• Package Type: Radial, Can - Screw Terminals
• Mounting Type: Chassis Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Unaffected

The ALS70A122DF450 meets all specified criteria and is classified as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71H122DF450 and ALS70A122DF450 are Active product status components manufactured by KEMET with full ROHS3 compliance and REACH unaffected status. The parts are electrically and mechanically identical across all specified parameters, including capacitance, voltage rating, ESR, ripple current ratings, thermal lifetime, and physical dimensions.

Selection between these parts is based on availability and inventory status. The ALS71H122DF450 maintains 848 pieces in stock, while the ALS70A122DF450 maintains 809 pieces in stock. Both parts are suitable for direct substitution in applications requiring 1200 µF, 450 V aluminum electrolytic capacitors with screw terminal connections and chassis mount configuration.

Frequently Asked Questions (FAQ)

Q: Can ALS70A122DF450 be used as a direct replacement for ALS71H122DF450?

A: Yes. The ALS70A122DF450 is a parametric equivalent substitute. All electrical parameters (capacitance, voltage, ESR, ripple current, impedance, lifetime), mechanical dimensions (lead spacing, diameter, height), and compliance certifications (ROHS3, REACH) are identical. The parts differ only in series designation (ALS70 vs. ALS71) but maintain functional equivalence.

Q: Are there any physical installation differences between these parts?

A: No. Both parts feature identical mechanical specifications: 36.00 mm diameter, 107.00 mm seated height, 12.80 mm lead spacing, radial can construction with screw terminals, and chassis mount configuration. Installation procedures and PCB layout requirements are identical.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both ALS71H122DF450 and ALS70A122DF450 are ROHS3 compliant, REACH unaffected, and carry MSL Rating 1 (Unlimited moisture sensitivity level). They meet identical regulatory requirements for deployment in regulated applications.

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

A: Series designation reflects internal KEMET product line categorization. Despite different series names, the ALS70A122DF450 and ALS71H122DF450 maintain identical electrical performance, thermal characteristics, and physical specifications for the 1200 µF, 450 V configuration.

Q: Are both parts currently available for procurement?

A: Yes. The ALS71H122DF450 has 848 pieces in stock, and the ALS70A122DF450 has 809 pieces in stock, both listed as new original inventory. Availability should be confirmed with the supplier for current procurement timelines.

Q: What applications are these capacitors suitable for?

A: Both parts are classified for general-purpose applications. The 1200 µF capacitance, 450 V rating, 11000-hour lifetime at 85°C, and ripple current specifications (5.3 A @ 100 Hz, 10.6 A @ 10 kHz) support use in power supply filtering, energy storage, and high-voltage DC circuits requiring stable capacitance over extended operational life.