ALS71H274NF040 Equivalent & Substitute Parts

Part Overview

The ALS71H274NF040 is a 270000 µF aluminum electrolytic capacitor rated at 40 V with screw terminals, manufactured by KEMET in the ALS71 series. This large-capacitance radial can capacitor is designed for general-purpose applications requiring high capacitance storage in chassis-mount configurations. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across alternative KEMET series offerings.

Substiute Parts

ALS71H274NF040

KEMETIn Stock: 1124ALS71H274NF040 Datasheet

Current PartRFQ

ALS70A274NF040

KEMETIn Stock: 866ALS70A274NF040 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS71H274NF040 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 @ 85°C: 20000 Hrs (exact match required)
• Operating temperature range: -40°C to 85°C (exact match required)
• Ripple current specifications @ 100 Hz and 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: 1.252" (31.80mm) (exact match required)
• Physical dimensions: 3.031" Dia × 4.213" Height (exact match required)

Compliance Equivalence Criteria:

• RoHS3 compliance status (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)
• REACH status: REACH Unaffected (exact match required)

The ALS70A274NF040 meets all substitution criteria as a parametric equivalent within the KEMET aluminum electrolytic capacitor portfolio.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71H274NF040 and ALS70A274NF040 are active production parts from KEMET with full RoHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and inventory considerations rather than technical differentiation.

Current Inventory Status:

• ALS71H274NF040: 1088 Pcs available
• ALS70A274NF040: 795 Pcs available

Both parts carry identical electrical performance, mechanical compatibility, and regulatory compliance certifications. The choice between ALS71 and ALS70 series variants is determined by supply chain requirements and procurement lead times. No performance degradation or functional compromise occurs when substituting between these equivalent parts in applications requiring 270000 µF capacitance at 40 V with screw terminal mounting.

Frequently Asked Questions (FAQ)

Q: Can ALS70A274NF040 be used as a direct replacement for ALS71H274NF040?

A: Yes. The ALS70A274NF040 is a parametric equivalent with identical capacitance (270000 µF), voltage rating (40 V), ESR (9 mOhm @ 100Hz), lifetime (20000 Hrs @ 85°C), and mechanical dimensions. Both parts feature screw terminals, chassis mount configuration, and identical lead spacing (1.252"). No circuit modifications or board layout changes are required.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts have identical diameter (3.031" / 77.00mm), height (4.213" / 107.00mm), and lead spacing (1.252" / 31.80mm). PCB footprints and mounting hardware compatibility are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ALS71H274NF040 and ALS70A274NF040 are RoHS3 compliant, REACH unaffected, and carry MSL rating of 1 (Unlimited). Regulatory and environmental compliance is equivalent.

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

A: The provided specifications indicate both parts are from different KEMET series (ALS71 versus ALS70) but maintain identical electrical and mechanical parameters for this 270000 µF 40 V configuration. Series designation reflects internal KEMET product line organization without affecting functional equivalence.

Q: Are ripple current ratings the same?

A: Yes. Both parts specify 27.8 A @ 100 Hz and 28.8 A @ 10 kHz, ensuring identical thermal performance and current handling capability in ripple-current-sensitive applications.

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

A: Yes. Identical electrical specifications, mechanical dimensions, and screw terminal configuration enable direct interchangeability without design modifications or performance impact.