ALS71C274NF040 Equivalent & Substitute Parts

Part Overview

The ALS71C274NF040 is a 270000 µF aluminum electrolytic capacitor rated for 40 V with screw terminals, manufactured by KEMET in the ALS71 series. This component is classified as an active product and is designed for general-purpose applications requiring high-capacitance energy storage in chassis-mounted configurations. The part is RoHS3 compliant and carries an unlimited moisture sensitivity level rating.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across alternative product lines, enabling component interchangeability in circuit designs without performance degradation.

Substiute Parts

ALS71C274NF040

KEMETIn Stock: 943ALS71C274NF040 Datasheet

Current PartRFQ

ALS70A274NF040

KEMETIn Stock: 866ALS70A274NF040 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value (270000 µF)
• Rated voltage (40 V)
• Capacitance tolerance (±20%)
• Equivalent series resistance at 100 Hz (9 mOhm)
• Ripple current ratings at both low frequency (27.8 A @ 100 Hz) and high frequency (28.8 A @ 10 kHz)
• Operating temperature range (-40°C to 85°C)
• Lifetime specification (20000 Hrs @ 85°C)

Mechanical Parameters:

• Lead spacing (31.80 mm)
• Physical dimensions (77.00 mm diameter, 107.00 mm height)
• Mounting configuration (Chassis Mount)
• Terminal type (Screw Terminals)
• Package classification (Radial, Can)

Compliance Parameters:

• RoHS3 compliance status
• Moisture sensitivity level (MSL 1 - Unlimited)

The ALS70A274NF040 meets all specified electrical and mechanical criteria for direct substitution with the ALS71C274NF040.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71C274NF040 and ALS70A274NF040 are active products manufactured by KEMET with identical electrical specifications, mechanical dimensions, and compliance certifications. The parts differ only in their series designation (ALS71 versus ALS70), which reflects internal product line organization rather than functional performance differences.

Selection between these parts is based on availability and inventory status. The ALS71C274NF040 maintains 869 pieces in stock, while the ALS70A274NF040 maintains 795 pieces in stock. Both parts carry RoHS3 compliance and REACH unaffected status, making them suitable for applications subject to environmental regulations.

The identical ESR, ripple current ratings, lifetime specifications, and thermal operating range ensure that either part delivers equivalent performance in circuit applications. Screw terminal configuration and chassis mount design are preserved across both options, eliminating any requirement for PCB layout or mechanical assembly modifications.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A274NF040 be used as a direct replacement for the ALS71C274NF040?

A: Yes. Both parts are manufactured by KEMET with identical capacitance (270000 µF), voltage rating (40 V), ESR (9 mOhm @ 100Hz), ripple current specifications, and physical dimensions. The series designation difference does not affect electrical or mechanical compatibility.

Q: Are there any differences in the screw terminal configuration between these parts?

A: No. Both parts feature identical radial, can-style screw terminals with 31.80 mm lead spacing, ensuring direct mechanical compatibility in existing circuit designs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ALS71C274NF040 and ALS70A274NF040 are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the significance of the series designation difference (ALS71 versus ALS70)?

A: The series designation reflects internal KEMET product line organization. It does not indicate functional, electrical, or mechanical differences between the parts. Both series deliver identical performance specifications for the 270000 µF, 40 V capacitor configuration.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C with a rated lifetime of 20000 hours at 85°C.

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

A: Yes. Both parts are rated for 27.8 A ripple current at 100 Hz and 28.8 A ripple current at 10 kHz, making them suitable for identical high-ripple-current circuit applications.

Q: Is there any difference in packaging or bulk ordering between these parts?

A: Both parts are supplied in bulk packaging. Inventory availability differs slightly (869 pieces for ALS71C274NF040 versus 795 pieces for ALS70A274NF040), but packaging format and ordering specifications are identical.