ATB227M016 Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The ATB227M016 is a 220 µF, 16 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the ATB series. This surface mount radial can capacitor is designed for bypass and decoupling applications in electronic circuits. The part is Active status and ROHS3 compliant, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when the original specification becomes unavailable, when higher voltage ratings are required for circuit margin, or when improved electrical performance characteristics are needed for specific application requirements.

Substiute Parts

ATB227M016

Cornell Dubilier / Illinois CapacitorIn Stock: 966ATB227M016 Datasheet

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ATB227M025

Cornell Dubilier / Illinois CapacitorIn Stock: 32834ATB227M025 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATB227M016 is based on the following criteria:

Capacitance Value: Must remain 220 µF. This is the primary functional parameter and cannot be altered.

Voltage Rating: The substitute part ATB227M025 carries a 25 V rating, which is higher than the original 16 V specification. A higher voltage rating provides increased design margin and is electrically compatible in circuits designed for 16 V operation.

Physical Package: Both parts share identical surface mount radial can dimensions (0.315" diameter, 0.413" height maximum) and land size (0.346" L x 0.335" W), ensuring mechanical interchangeability on PCB layouts.

Series Designation: Both parts belong to the ATB series from Cornell Dubilier / Illinois Capacitor, confirming product family consistency.

Electrical Performance: The substitute part exhibits improved electrical characteristics including lower ESR (960 mOhm vs. 1.15 Ohm) and higher ripple current ratings at both low and high frequencies, while maintaining the same 5000-hour lifetime at 105°C and operating temperature range.

Compliance: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating, ensuring regulatory and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATB227M025 is a direct substitute for the ATB227M016 based on the following engineering criteria:

Voltage Compatibility: The 25 V rating of the substitute part exceeds the original 16 V specification. In bypass and decoupling applications, a higher voltage rating provides additional safety margin without affecting circuit functionality. The capacitor will operate within its rated voltage envelope in any circuit designed for the original 16 V part.

Physical Interchangeability: Identical surface mount package dimensions and land pattern ensure drop-in replacement capability on existing PCB layouts without design modification.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental and regulatory requirements. MSL 1 rating confirms unlimited shelf life under standard storage conditions.

Product Status: Both parts are Active status products from the same manufacturer and series, ensuring long-term availability and consistent quality standards.

Electrical Performance Enhancement: The substitute part delivers improved electrical characteristics including 16.5% lower ESR and 62% higher ripple current capacity at 120 Hz, providing performance benefits for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the ATB227M025 be used as a direct replacement for the ATB227M016?

A: Yes. The ATB227M025 is electrically and mechanically compatible. Both parts share identical capacitance (220 µF), tolerance (±20%), physical dimensions, and surface mount land pattern. The higher voltage rating (25 V vs. 16 V) is compatible with circuits designed for 16 V operation.

Q: What is the primary difference between these two parts?

A: The rated voltage differs: ATB227M016 is rated 16 V, while ATB227M025 is rated 25 V. The substitute part also exhibits lower ESR (960 mOhm vs. 1.15 Ohm) and higher ripple current ratings.

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both parts have identical surface mount land size (0.346" L x 0.335" W / 8.80mm x 8.50mm) and can diameter (0.315" / 8.00mm), with the same maximum seated height (0.413" / 10.50mm). No PCB layout modification is required.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, carry MSL 1 rating, and share the same ECCN (EAR99) and HTSUS code (8532.22.0020).

Q: What applications are these capacitors suitable for?

A: Both parts are designed for bypass and decoupling applications in electronic circuits, with operating temperature range from -55°C to 105°C and 5000-hour lifetime at 105°C.

Q: Is the higher voltage rating of the substitute part a disadvantage?

A: No. A higher voltage rating provides increased design margin and is standard practice in component selection. The capacitor will function identically in circuits designed for the lower voltage specification.