ALS70G274NF040 Equivalent & Substitute Parts

Part Overview

The ALS70G274NF040 is a 270000 µF, 40 V aluminum electrolytic capacitor manufactured by KEMET in the ALS70 series. This radial, can-style capacitor with screw terminals is designed for general-purpose applications requiring high capacitance values in chassis-mount configurations. The part is currently active in production with full inventory availability. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

ALS70G274NF040

KEMETIn Stock: 852ALS70G274NF040 Datasheet

Current PartRFQ

ALS70A274NF040

KEMETIn Stock: 866ALS70A274NF040 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS70G274NF040 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Capacitance: 270000 µF
• Voltage Rating: 40 V
• Tolerance: ±20%
• ESR @ 100Hz: 9 mOhm
• Lifetime @ 85°C: 20000 Hrs
• Operating Temperature Range: -40°C to 85°C
• Ripple Current @ 100 Hz: 27.8 A
• Ripple Current @ 10 kHz: 28.8 A

Mechanical Parameters (Must Match):

• Package Type: Radial, Can - Screw Terminals
• Lead Spacing: 1.252" (31.80mm)
• Diameter: 3.031" (77.00mm)
• Height - Seated (Max): 4.213" (107.00mm)
• Mounting Type: Chassis Mount

Compliance Parameters (Must Match):

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

The ALS70A274NF040 meets all substitution criteria as a parametric equivalent within the ALS70 series.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS70G274NF040 and ALS70A274NF040 are active production parts from KEMET with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on inventory availability and supply chain considerations rather than electrical or mechanical performance differences.

The ALS70G274NF040 has 788 pieces in stock, while the ALS70A274NF040 has 795 pieces in stock. Both parts meet all regulatory requirements for deployment in applications requiring 270000 µF capacitance at 40 V with screw terminal connections in chassis-mount configurations.

Frequently Asked Questions (FAQ)

Q: Can the ALS70A274NF040 be used as a direct replacement for the ALS70G274NF040?

A: Yes. The ALS70A274NF040 is a parametric equivalent with identical electrical specifications, mechanical dimensions, lead spacing, and compliance certifications. Direct substitution is supported without circuit redesign.

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

A: No. Both parts use identical radial, can-style screw terminal configurations with the same lead spacing of 1.252" (31.80mm).

Q: Do both parts have the same thermal performance characteristics?

A: Yes. Both parts have identical ESR values of 9 mOhm @ 100Hz, ripple current ratings of 27.8 A @ 100 Hz and 28.8 A @ 10 kHz, and lifetime specifications of 20000 hours at 85°C.

Q: What is the difference between the ALS70G and ALS70A base product numbers?

A: The base product numbers indicate different internal design variants within the ALS70 series. However, the parametric specifications for the 270000 µF 40 V variants are identical, making them electrically and mechanically interchangeable.

Q: Are both parts suitable for chassis-mount applications?

A: Yes. Both parts are specified for chassis mount with identical mechanical dimensions: 3.031" diameter (77.00mm) and 4.213" maximum seated height (107.00mm).

Q: Do these parts require any special handling or storage considerations?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.