ALS71H184MF040 Equivalent & Substitute Parts

Part Overview

The ALS71H184MF040 is a 180000 µF, 40 V aluminum electrolytic capacitor manufactured by KEMET in the ALS71 series. This radial, can-style capacitor with screw terminals is designed for general-purpose applications requiring high capacitance values and extended operational life. The part maintains an active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory constraints require component flexibility within equivalent electrical and mechanical specifications.

Substiute Parts

ALS71H184MF040

KEMETIn Stock: 1049ALS71H184MF040 Datasheet

Current PartRFQ

ALS71A184MF040

KEMETIn Stock: 1000ALS71A184MF040 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS71H184MF040 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ALS71A184MF040 qualifies as a direct equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Identical capacitance value: 180000 µF
• Identical rated voltage: 40 V
• Identical tolerance: ±20%
• Identical ESR: 9 mOhm @ 100Hz
• Identical lifetime rating: 19000 Hrs @ 85°C
• Identical operating temperature range: -40°C to 85°C
• Identical ripple current specifications at both 100 Hz and 10 kHz

Mechanical Parameter Equivalence:

• Identical package type: Radial, Can - Screw Terminals
• Identical mounting type: Chassis Mount
• Identical lead spacing: 28.50 mm
• Identical physical dimensions: 66.00 mm diameter, 107.00 mm height

Compliance Equivalence:

• Both parts maintain RoHS3 compliance
• Both parts are REACH unaffected
• Both parts carry identical ECCN and HTSUS classifications

The only distinction between the main part and substitute is the base product number designation (ALS71H versus ALS71A), which reflects internal KEMET series classification without affecting functional or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71H184MF040 and ALS71A184MF040 are active products from KEMET with full regulatory compliance. Selection between these parts should be based on inventory availability and lead time requirements, as they are electrically and mechanically identical.

Primary Selection Criteria:

• Current inventory status: ALS71H184MF040 has 1002 pieces in stock; ALS71A184MF040 has 978 pieces in stock
• Both parts maintain identical compliance certifications: RoHS3 compliant and REACH unaffected
• Both parts carry the same ECCN (EAR99) and HTSUS (8532.22.0085) classifications

Application Compatibility: The 180000 µF capacitance, 40 V rating, and 9 mOhm ESR specification make these parts suitable for general-purpose applications requiring high capacitance energy storage with low impedance characteristics. The 19000-hour lifetime at 85°C supports extended operational life in continuous-duty applications.

Mechanical Installation: Both parts utilize identical screw terminal connections and chassis mount configuration, ensuring direct mechanical interchangeability without modification to PCB layout or mounting hardware.

Frequently Asked Questions (FAQ)

Q: Can ALS71A184MF040 be used as a direct replacement for ALS71H184MF040?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including capacitance, voltage rating, ESR, ripple current, physical dimensions, and terminal configuration. The difference in base product number (ALS71H versus ALS71A) does not affect functional compatibility.

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

A: No. Both parts use identical radial, can-style screw terminals with 28.50 mm lead spacing. Installation procedures and terminal torque specifications remain the same.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both ALS71H184MF040 and ALS71A184MF040 are RoHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications.

Q: What is the significance of the different base product numbers (ALS71H versus ALS71A)?

A: The base product number designation reflects internal KEMET series classification. This distinction does not impact electrical performance, mechanical compatibility, or regulatory compliance.

Q: Are the physical dimensions identical for both parts?

A: Yes. Both parts have identical diameter (66.00 mm), height (107.00 mm), and lead spacing (28.50 mm). They are fully interchangeable in chassis mount applications.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 85°C with a rated lifetime of 19000 hours at 85°C.

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

A: Yes. Both parts support identical ripple current specifications: 27.4 A @ 100 Hz and 29.2 A @ 10 kHz, making them suitable for identical high-ripple-current applications.