Equivalent & Substitute Parts for ALC70D103DD063

Part Overview

The ALC70D103DD063 is a 10000 µF, 63 V aluminum electrolytic capacitor manufactured by KEMET in the ALC70 series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance and extended operational life. The part is currently active in production with 925 units in stock. Substitute parts are identified to provide design flexibility, inventory management options, and continuity of supply while maintaining electrical and mechanical compatibility.

Substiute Parts

ALC70D103DD063

KEMETIn Stock: 994ALC70D103DD063 Datasheet

Current PartRFQ

ALC70A103DD063

KEMETIn Stock: 1152ALC70A103DD063 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALC70D103DD063 is based on strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 10000 µF (exact match required)
• Voltage Rating: 63 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 15000 Hrs @ 85°C (exact match required)
• Operating Temperature: -40°C to 85°C (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 10.00 mm (exact match required)
• Diameter: 35.00 mm (exact match required)
• Height: 42.00 mm maximum (exact match required)
• Mounting: Through Hole (exact match required)

Performance Parameters:

• Ripple Current @ 100 Hz: 6.55 A (exact match required)
• Ripple Current @ 10 kHz: 8.44 A (exact match required)

The substitute part ALC70A103DD063 meets all critical electrical, mechanical, and performance parameters. Variation in ESR (43.57 mOhm vs. 44 mOhm) falls within acceptable engineering tolerance for this component category and does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both ALC70D103DD063 and ALC70A103DD063 are active production parts from KEMET with full RoHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and inventory requirements rather than technical performance differences.

ALC70D103DD063 is appropriate for applications where the specific base product number ALC70D is specified in design documentation or where current inventory of 925 units meets project timelines.

ALC70A103DD063 is appropriate for applications requiring alternative sourcing, where the ALC70A base product number is acceptable, or where higher inventory availability (1093 units) supports extended production runs.

Both parts satisfy identical electrical specifications, mechanical dimensions, and regulatory compliance requirements. PCB layout, thermal management, and circuit design considerations remain unchanged between these substitutes.

Frequently Asked Questions (FAQ)

Q: Can ALC70A103DD063 be used as a direct replacement for ALC70D103DD063 on existing PCBs?

A: Yes. Both parts share identical mechanical dimensions (35.00 mm diameter, 42.00 mm height, 10.00 mm lead spacing), mounting type (through hole, snap-in), and electrical specifications (10000 µF, 63 V, ±20% tolerance). No PCB redesign is required.

Q: What is the difference between the ALC70D and ALC70A base product numbers?

A: The base product numbers identify different product lines within the ALC70 series. Both lines meet identical specifications for the 10000 µF, 63 V configuration. The difference is internal to KEMET's product architecture and does not affect electrical or mechanical performance.

Q: Are there differences in ESR between these two parts?

A: ESR values are 44 mOhm (ALC70D103DD063) and 43.57 mOhm (ALC70A103DD063). This 0.43 mOhm difference is negligible for general-purpose applications and falls within normal manufacturing variation for aluminum electrolytic capacitors.

Q: Do both parts have the same lifetime rating?

A: Yes. Both parts are rated for 15000 hours at 85°C operating temperature, with identical operating temperature range of -40°C to 85°C.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both ALC70D103DD063 and ALC70A103DD063 are ROHS3 compliant and REACH unaffected.

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

A: Yes. Both parts support identical ripple current specifications: 6.55 A @ 100 Hz and 8.44 A @ 10 kHz.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on component availability, supply chain preferences, and inventory management strategy. Both parts are active production items with equivalent technical performance.