ALS71A911DA250 Equivalent & Substitute Parts

Part Overview

The ALS71A911DA250 is a 910 µF, 250 V aluminum electrolytic capacitor manufactured by KEMET, featuring radial, can-style screw terminals for chassis mount applications. This component is classified as Active product status and is designed for general-purpose applications requiring high-capacitance energy storage in power supply and filtering circuits. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances, ensuring functional interchangeability in target applications without circuit redesign.

Key Parameters

Parameter	Value	Unit
Capacitance	910	µF
Voltage - Rated	250	V
Tolerance	±20%	-
ESR @ 100Hz	256	mOhm
Lifetime @ 85°C	11000	Hrs
Operating Temperature Range	-40°C ~ 85°C	-
Ripple Current @ 100 Hz	3.6	A
Ripple Current @ 10 kHz	6.9	A
Lead Spacing	12.80	mm
Diameter	36.00	mm
Height (Seated Max)	54.00	mm
Package Type	Radial, Can - Screw Terminals	-
Mounting Type	Chassis Mount	-

Substitute Part Grouping Explanation

Substitute parts for the ALS71A911DA250 are identified based on strict equivalence of the following critical parameters:

Electrical Parameters (Must Match Exactly):

Capacitance: 910 µF
Voltage Rating: 250 V
Tolerance: ±20%
ESR @ 100Hz: 256 mOhm
Lifetime @ 85°C: 11000 Hrs
Operating Temperature Range: -40°C ~ 85°C
Ripple Current @ 100 Hz: 3.6 A
Ripple Current @ 10 kHz: 6.9 A

Mechanical Parameters (Must Match Exactly):

Package Type: Radial, Can - Screw Terminals
Lead Spacing: 12.80 mm
Diameter: 36.00 mm
Height (Seated Max): 54.00 mm
Mounting Type: Chassis Mount

Compliance Parameters (Must Match):

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

The ALS70A911DA250 meets all substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	ALS71A911DA250 (Main)	ALS70A911DA250 (Substitute)	Match Status
Manufacturer	KEMET	KEMET	Identical
Capacitance	910 µF	910 µF	Identical
Voltage - Rated	250 V	250 V	Identical
Tolerance	±20%	±20%	Identical
ESR @ 100Hz	256 mOhm	256 mOhm	Identical
Lifetime @ 85°C	11000 Hrs	11000 Hrs	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Ripple Current @ 100 Hz	3.6 A	3.6 A	Identical
Ripple Current @ 10 kHz	6.9 A	6.9 A	Identical
Impedance	166 mOhms	166 mOhms	Identical
Lead Spacing	12.80 mm	12.80 mm	Identical
Diameter	36.00 mm	36.00 mm	Identical
Height (Seated Max)	54.00 mm	54.00 mm	Identical
Package Type	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical

Engineering Selection Recommendations

Both the ALS71A911DA250 and ALS70A911DA250 are Active product status components manufactured by KEMET with full ROHS3 compliance and REACH unaffected status. The parts are electrically and mechanically identical across all specified parameters.

Selection between these parts is based on inventory availability and supply chain considerations. Both components satisfy identical electrical performance requirements, thermal characteristics, and mechanical fit specifications for chassis-mount applications requiring 910 µF capacitance at 250 V rating.

Current inventory status: ALS71A911DA250 (958 Pcs), ALS70A911DA250 (951 Pcs).

Frequently Asked Questions (FAQ)

Q: Can ALS70A911DA250 be used as a direct replacement for ALS71A911DA250?

A: Yes. The ALS70A911DA250 is a parametric equivalent with identical electrical specifications (910 µF, 250 V, ±20% tolerance, 256 mOhm ESR @ 100Hz, 11000 Hrs @ 85°C), mechanical dimensions (36.00 mm diameter, 54.00 mm height, 12.80 mm lead spacing), and package configuration (Radial, Can - Screw Terminals, Chassis Mount). Both parts are ROHS3 compliant with MSL 1 rating.

Q: Are there any differences in the series designation between these parts?

A: The main part belongs to the ALS71 series, while the substitute belongs to the ALS70 series. This series designation difference does not affect electrical or mechanical compatibility, as all specified parameters remain identical.

Q: What are the critical parameters that determine substitutability?

A: Substitutability is determined by exact matching of: capacitance (910 µF), voltage rating (250 V), tolerance (±20%), ESR (256 mOhm @ 100Hz), lifetime rating (11000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), ripple current specifications (3.6 A @ 100 Hz, 6.9 A @ 10 kHz), mechanical dimensions, package type (Radial, Can - Screw Terminals), and mounting configuration (Chassis Mount).

Q: Are both parts suitable for the same PCB layout and mechanical assembly?

A: Yes. Both parts have identical lead spacing (12.80 mm), can diameter (36.00 mm), and seated height (54.00 mm), ensuring identical PCB footprint and mechanical clearance requirements for chassis-mount applications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both ALS71A911DA250 and ALS70A911DA250 are ROHS3 compliant, REACH unaffected, carry MSL 1 (Unlimited) moisture sensitivity rating, and are classified as Active product status by KEMET.

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