ALS71H911DA250 Equivalent & Substitute Parts

Part Overview

The ALS71H911DA250 is a 910 µF, 250 V aluminum electrolytic capacitor manufactured by KEMET, featuring screw terminals for chassis mount applications. This radial, can-style capacitor is designed for general-purpose energy storage and filtering in power supply circuits operating at elevated voltages. The part maintains an active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design flexibility, or application-specific requirements.

Substiute Parts

ALS71H911DA250

KEMETIn Stock: 818ALS71H911DA250 Datasheet

Current PartRFQ

ALS70A911DA250

KEMETIn Stock: 1049ALS70A911DA250 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALS71H911DA250 is based on strict equivalence of the following critical parameters:

Electrical Parameters:

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

Mechanical Parameters:

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

The ALS70A911DA250 qualifies as a parametric equivalent substitute because all electrical and mechanical parameters are identical to the main part.

Parameter Comparison

Engineering Selection Recommendations

Both the ALS71H911DA250 and ALS70A911DA250 are active KEMET products with identical electrical performance and mechanical specifications. Selection between these parts is based on availability and series designation only:

ALS71H911DA250 (Primary Part): 757 units in stock. ALS71 series designation.

ALS70A911DA250 (Substitute Part): 951 units in stock. ALS70 series designation.

Both parts maintain full RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1). The substitute part provides equivalent performance for all circuit applications requiring 910 µF, 250 V aluminum electrolytic capacitors with screw terminal connections and chassis mount configuration.

Frequently Asked Questions (FAQ)

Q: Can ALS70A911DA250 be used as a direct replacement for ALS71H911DA250?

A: Yes. All electrical parameters, mechanical dimensions, and compliance certifications are identical. The parts differ only in series designation (ALS70 versus ALS71).

Q: Are there any performance differences between these two parts?

A: No. Capacitance, voltage rating, ESR, ripple current ratings, lifetime, operating temperature range, and impedance are identical across both parts.

Q: Do these parts have the same physical footprint?

A: Yes. Lead spacing (12.80 mm), diameter (36.00 mm), and maximum seated height (54.00 mm) are identical. Both use screw terminal connections and chassis mount configuration.

Q: What is the tolerance specification for these capacitors?

A: Both parts have ±20% capacitance tolerance. This means the actual capacitance value will fall within the range of 728 µF to 1092 µF.

Q: Are both parts RoHS compliant?

A: Yes. Both ALS71H911DA250 and ALS70A911DA250 are ROHS3 compliant and REACH unaffected.

Q: What is the maximum ripple current these capacitors can handle?

A: At 10 kHz, the maximum ripple current is 6.9 A. At 100 Hz, the maximum ripple current is 3.6 A.

Q: What is the expected lifetime of these capacitors?

A: Both parts are rated for 11000 hours at 85°C operating temperature.

Q: Can these capacitors be used in applications below -40°C or above 85°C?

A: No. The specified operating temperature range is -40°C to 85°C. Operation outside this range is not supported.