ALS71A511DB450 Equivalent & Substitute Parts

Part Overview

The ALS71A511DB450 is an aluminum electrolytic capacitor manufactured by KEMET, rated at 510 µF capacitance with 450 V voltage rating and ±20% tolerance. This component is designed for general-purpose applications requiring high-voltage energy storage and filtering in chassis-mounted configurations with screw terminals. The part is currently in active production status with 876 units in stock. Equivalent substitute parts are identified when identical electrical and mechanical parameters are maintained across alternative series designations, ensuring direct functional interchangeability in circuit applications.

Key Parameters

Parameter	Value
Capacitance	510 µF
Voltage Rating	450 V
Tolerance	±20%
ESR @ 100Hz	336 mOhm (Main) / 337 mOhm (Substitute)
Lifetime @ 85°C	11000 Hours
Operating Temperature Range	-40°C to 85°C
Ripple Current @ 100Hz	3.2 A
Ripple Current @ 10kHz	6.9 A
Package Type	Radial, Can - Screw Terminals
Mounting Type	Chassis Mount
Physical Diameter	1.417" (36.00 mm)
Height (Seated Max)	2.520" (64.00 mm)
Lead Spacing	0.504" (12.80 mm)

Substitute Part Grouping Explanation

The ALS70A511DB450 qualifies as a parametric equivalent to the ALS71A511DB450 based on the following substitution criteria:

Electrical Parameters (Identical):

Capacitance: 510 µF
Voltage Rating: 450 V
Tolerance: ±20%
Lifetime: 11000 Hours @ 85°C
Operating Temperature Range: -40°C to 85°C
Ripple Current @ 100Hz: 3.2 A
Ripple Current @ 10kHz: 6.9 A
Impedance: 212 mOhms

Mechanical Parameters (Identical):

Package Type: Radial, Can - Screw Terminals
Mounting Type: Chassis Mount
Physical Diameter: 1.417" (36.00 mm)
Height: 2.520" (64.00 mm)
Lead Spacing: 0.504" (12.80 mm)

Negligible Variance:

ESR @ 100Hz: 336 mOhm (ALS71A511DB450) vs. 337 mOhm (ALS70A511DB450) — variance of 1 mOhm is within acceptable engineering tolerance for this component category

The substitution is based on series designation change (ALS71 to ALS70) while maintaining all critical electrical and mechanical specifications.

Parameter Comparison

Parameter	ALS71A511DB450 (Main)	ALS70A511DB450 (Substitute)	Match Status
Manufacturer	KEMET	KEMET	Identical
Capacitance	510 µF	510 µF	Identical
Voltage Rating	450 V	450 V	Identical
Tolerance	±20%	±20%	Identical
ESR @ 100Hz	336 mOhm	337 mOhm	Equivalent
Lifetime @ 85°C	11000 Hours	11000 Hours	Identical
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Identical
Ripple Current @ 100Hz	3.2 A	3.2 A	Identical
Ripple Current @ 10kHz	6.9 A	6.9 A	Identical
Impedance	212 mOhms	212 mOhms	Identical
Package Type	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
Physical Diameter	1.417" (36.00 mm)	1.417" (36.00 mm)	Identical
Height (Seated Max)	2.520" (64.00 mm)	2.520" (64.00 mm)	Identical
Lead Spacing	0.504" (12.80 mm)	0.504" (12.80 mm)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical

Engineering Selection Recommendations

Both the ALS71A511DB450 and ALS70A511DB450 are active production components manufactured by KEMET with identical RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on availability and inventory considerations rather than electrical or mechanical performance differences.

The ALS71A511DB450 (876 units in stock) and ALS70A511DB450 (843 units in stock) are functionally interchangeable for all general-purpose high-voltage filtering applications. The negligible 1 mOhm ESR variance between series designations does not impact circuit performance in standard applications.

Both components maintain identical compliance certifications (RoHS3, REACH Unaffected, EAR99 ECCN classification) and moisture sensitivity ratings (MSL 1 - Unlimited), ensuring equivalent regulatory and environmental performance.

Frequently Asked Questions (FAQ)

Q: Can ALS70A511DB450 be used as a direct replacement for ALS71A511DB450?

A: Yes. Both parts share identical capacitance (510 µF), voltage rating (450 V), tolerance (±20%), ripple current specifications, physical dimensions, and mounting configuration. The ESR variance of 1 mOhm is negligible for general-purpose applications.

Q: Are there physical dimension differences between these parts?

A: No. Both components have identical physical specifications: 1.417" diameter, 2.520" seated height, and 0.504" lead spacing. They are mechanically interchangeable in chassis-mounted screw terminal configurations.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ALS71A511DB450 and ALS70A511DB450 are RoHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings.

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

A: The series designation change reflects internal KEMET product line evolution. All electrical and mechanical parameters remain identical for these specific part numbers.

Q: Are the ripple current ratings the same?

A: Yes. Both parts are rated for 3.2 A ripple current at 100 Hz and 6.9 A ripple current at 10 kHz.

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

A: Both components operate across -40°C to 85°C with a rated lifetime of 11000 hours at 85°C.

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

A: Yes. Identical electrical performance, mechanical fit, and compliance certifications ensure direct interchangeability without design modification.

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