NLW25-25

Part Overview

The NLW25-25 is a 25 µF 25 V aluminum electrolytic capacitor in axial, can package format manufactured by Cornell Dubilier Electronics (CDE). This component is rated for general-purpose applications with an operating temperature range of -40°C to 105°C and a lifetime specification of 1000 hours at 105°C. The product status is obsolete, necessitating the identification of equivalent substitute components that maintain functional compatibility while meeting current reliability and compliance requirements.

Substiute Parts

NLW25-25

Cornell Dubilier Electronics (CDE)In Stock: 1506NLW25-25 Datasheet

Current PartRFQ

226TMA025M

Cornell Dubilier / Illinois CapacitorIn Stock: 5525226TMA025M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute selection is based on the following critical parameters that determine functional equivalence:

• Capacitance Range: The substitute must operate within acceptable tolerance limits relative to the original 25 µF specification. The 226TMA025M substitute provides 22 µF with ±20% tolerance, yielding a maximum capacitance of 26.4 µF and minimum of 17.6 µF, which overlaps with the original part's operating range.
• Voltage Rating: Both the main part and substitute maintain a 25 V rated voltage, ensuring equivalent electrical stress margins.
• Package Configuration: Both components use axial, can package format with through-hole mounting, maintaining mechanical and assembly compatibility.
• Operating Temperature Range: Both parts specify -40°C to 105°C operating range, ensuring thermal compatibility across application environments.
• Compliance Standards: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Parameter Comparison

Engineering Selection Recommendations

The 226TMA025M serves as the primary substitute for the obsolete NLW25-25 based on the following engineering criteria:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain reliability compared to the obsolete main part.

Compliance: Both components achieve ROHS3 compliance and maintain identical MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent handling and storage requirements.

Electrical Equivalence: The substitute maintains the same 25 V voltage rating and provides overlapping capacitance within tolerance ranges. The slightly higher ESR (12.057 Ohm @ 120Hz versus 10.6 Ohm) and improved lifetime specification (2000 hours versus 1000 hours at 105°C) indicate enhanced performance characteristics in the substitute part.

Physical Considerations: The substitute part is physically smaller, which may require PCB layout evaluation for fit and lead spacing verification in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the 226TMA025M directly replace the NLW25-25 in all applications? A: The 226TMA025M provides electrical equivalence within the specified voltage and capacitance parameters. However, the smaller physical dimensions (0.197" Dia x 0.512" L versus 0.320" Dia x 0.690" L) require verification of PCB layout compatibility and mounting clearances for your specific application.

Q: What is the acceptable capacitance variation when substituting? A: The 226TMA025M nominal capacitance of 22 µF with ±20% tolerance produces a usable range of 17.6 µF to 26.4 µF. This overlaps the original 25 µF specification and is suitable for circuits designed to tolerate general-purpose capacitor tolerances.

Q: Are there thermal or reliability differences between these parts? A: The substitute part provides a 2000-hour lifetime at 105°C compared to 1000 hours for the main part, indicating improved thermal aging characteristics. Both maintain -40°C to 105°C operating temperature ranges.

Q: Does the higher ESR of the substitute affect circuit performance? A: The ESR difference of approximately 1.5 Ohm is within typical performance margins for general-purpose applications. Applications requiring specific impedance characteristics should evaluate the ESR specification against circuit requirements.

Q: Are both parts RoHS compliant? A: Both the NLW25-25 and 226TMA025M are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity, ensuring equivalent environmental and handling compliance requirements.