ALS70C274NF040 Equivalent & Substitute Parts

Part Overview

The ALS70C274NF040 is a 270000 µF aluminum electrolytic capacitor rated at 40 V with screw terminals, manufactured by KEMET in the ALS70 series. This component is classified as an active product suitable for general-purpose applications requiring high-capacitance energy storage in chassis-mounted configurations. The part features a radial can design with screw terminal connections, operating across a temperature range of -40°C to 85°C with a rated lifetime of 20000 hours at 85°C.

Equivalent and substitute parts are identified when they maintain identical or functionally compatible electrical and mechanical specifications, ensuring direct interchangeability in circuit designs without performance degradation.

Substiute Parts

ALS70C274NF040

KEMETIn Stock: 1038ALS70C274NF040 Datasheet

Current PartRFQ

ALS70A274NF040

KEMETIn Stock: 866ALS70A274NF040 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS70C274NF040 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Capacitance value: 270000 µF (exact match required)
• Rated voltage: 40 V (exact match required)
• Tolerance: ±20% (exact match required)
• ESR @ 100Hz: 9 mOhm (exact match required)
• Lifetime rating: 20000 Hrs @ 85°C (exact match required)
• Operating temperature range: -40°C to 85°C (exact match required)
• Ripple current specifications: 27.8 A @ 100 Hz and 28.8 A @ 10 kHz (exact match required)

Mechanical Equivalence Criteria:

• 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, 107.00 mm height seated (exact match required)

Compliance Equivalence Criteria:

• RoHS3 compliance status (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all criteria simultaneously. Parts are grouped only when they meet 100% of the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

ALS70A274NF040 as Direct Substitute:

The ALS70A274NF040 is a parametric equivalent to the ALS70C274NF040. Both parts are manufactured by KEMET, belong to the ALS70 series, and maintain identical electrical, mechanical, and compliance specifications. The parts differ only in their base product number designation (ALS70A versus ALS70C), which reflects internal KEMET product line organization and does not affect functional performance or interchangeability.

Compliance Status: Both parts maintain ROHS3 compliance and carry identical regulatory certifications (REACH Unaffected, ECCN EAR99, HTSUS 8532.22.0085). Both are classified as active products with unlimited moisture sensitivity level rating.

Inventory Consideration: The ALS70C274NF040 has 970 pieces in stock, while the ALS70A274NF040 has 795 pieces in stock. Selection between these equivalent parts may be determined by availability requirements and supply chain logistics.

Application Compatibility: Both parts are rated for general-purpose applications and are suitable for any circuit design requiring a 270000 µF, 40 V aluminum electrolytic capacitor with screw terminal connections and chassis mounting configuration.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A274NF040 be used as a direct replacement for the ALS70C274NF040?

A: Yes. The ALS70A274NF040 is a parametric equivalent with identical electrical specifications (270000 µF, 40 V, 9 mOhm ESR @ 100Hz, 20000 Hrs @ 85°C), mechanical dimensions (77.00 mm diameter, 107.00 mm height, 31.80 mm lead spacing), and compliance certifications (ROHS3). Direct substitution is supported without circuit modification.

Q: Are there any differences in performance between ALS70C274NF040 and ALS70A274NF040?

A: No performance differences exist. Both parts share identical rated capacitance, voltage, tolerance, ESR, lifetime rating, operating temperature range, ripple current specifications, and impedance characteristics. The base product number designation reflects internal manufacturer classification only.

Q: What are the critical parameters that determine substitutability for this capacitor?

A: Substitutability is determined by exact equivalence in: capacitance (270000 µF), rated voltage (40 V), tolerance (±20%), ESR (9 mOhm @ 100Hz), lifetime (20000 Hrs @ 85°C), operating temperature range (-40°C to 85°C), ripple current ratings (27.8 A @ 100 Hz, 28.8 A @ 10 kHz), package type (Radial, Can - Screw Terminals), mounting type (Chassis Mount), and physical dimensions (77.00 mm diameter, 107.00 mm height, 31.80 mm lead spacing).

Q: Can this capacitor be used in surface mount applications?

A: No. The ALS70C274NF040 is designed for chassis mount applications with screw terminal connections. Surface mount land size is not specified for this part. Surface mount applications require components specifically rated for SMD assembly.

Q: What is the operating temperature range for this capacitor?

A: The operating temperature range is -40°C to 85°C. The part is rated for 20000 hours of operation at 85°C. Operating outside this range or exceeding the rated lifetime at elevated temperatures will degrade capacitor performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the ALS70C274NF040 and ALS70A274NF040 are ROHS3 compliant and carry REACH Unaffected status. Both parts meet current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the significance of the ±20% tolerance specification?

A: The ±20% tolerance indicates that the actual capacitance value may vary between 216000 µF and 324000 µF from the nominal 270000 µF rating. This tolerance range must be acceptable for the circuit design. Applications requiring tighter capacitance tolerance require alternative component selection.

Q: How do the ripple current ratings affect component selection?

A: Ripple current ratings specify the maximum AC current the capacitor can handle at specified frequencies without exceeding temperature limits. The ALS70C274NF040 is rated for 27.8 A @ 100 Hz and 28.8 A @ 10 kHz. Circuit designs must ensure actual ripple current does not exceed these ratings to prevent premature capacitor failure.