NLW1-25 Equivalent & Substitute Parts

Part Overview

The NLW1-25 is a 1 µF 25 V aluminum electrolytic capacitor in axial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is designated as obsolete, making it necessary to identify compatible substitute parts for ongoing applications. The NLW series has been superseded by active alternatives that maintain equivalent capacitance and voltage ratings while offering improved performance characteristics such as extended operational lifetime and lower equivalent series resistance.

Substiute Parts

NLW1-25

Cornell Dubilier Electronics (CDE)In Stock: 1183NLW1-25 Datasheet

Current PartRFQ

105TMA050M

Cornell Dubilier / Illinois CapacitorIn Stock: 1171105TMA050M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NLW1-25 must satisfy the following core substitution criteria based on allowed electrical and mechanical parameters:

Primary Compatibility Parameters:

• Capacitance: 1 µF (exact match)
• Voltage Rating: Equal to or greater than 25 V
• Package Type: Axial, Can (through-hole mounting)
• Polarization: Polar

Secondary Performance Parameters:

• ESR: Equal to or lower than the original specification
• Lifetime @ 105°C: Equal to or longer duration
• Operating Temperature Range: Must encompass -40°C to 105°C
• RoHS Compliance: ROHS3 Compliant

The 105TMA050M (TMA series by Cornell Dubilier / Illinois Capacitor) qualifies as an authorized substitute. It maintains the 1 µF capacitance, exceeds the voltage requirement (50 V vs. 25 V), preserves the axial can package, and demonstrates superior electrical characteristics including lower ESR and extended operational lifetime.

Parameter Comparison

Engineering Selection Recommendations

The 105TMA050M is the designated manufacturer-recommended substitute for the obsolete NLW1-25. Selection of this active-status alternative is justified on the following engineering grounds:

Compliance & Availability:

• The NLW1-25 carries an obsolete status, restricting future procurement options. The 105TMA050M maintains active product status, ensuring reliable supply chain access.
• Both components are ROHS3 Compliant and carry identical ECCN (EAR99) and HTSUS (8532.22.0020) classifications, ensuring regulatory consistency.

Electrical Equivalence:

• The 1 µF capacitance value is identical. The 50 V voltage rating of the 105TMA050M exceeds the original 25 V requirement, providing enhanced voltage margin and reliability in transient conditions.
• ESR values are functionally equivalent (200 Ohm vs. 198.944 Ohm @ 120Hz), maintaining circuit performance characteristics.

Performance Enhancement:

• The 105TMA050M extends operational lifetime to 2000 hours @ 105°C, doubling the NLW1-25 specification of 1000 hours. This improves long-term reliability and reduces failure risk in continuous-duty applications.

Mechanical Compatibility:

• Both components share identical axial, can package geometry and through-hole mounting configuration. The 105TMA050M's smaller physical dimensions (5.00mm x 13.00mm vs. 7.11mm x 14.49mm) do not restrict placement and offer additional board layout flexibility.

Frequently Asked Questions (FAQ)

Q: Can the 105TMA050M replace the NLW1-25 in all applications? A: The 105TMA050M is electrically and mechanically compatible with the NLW1-25 for general purpose applications. Both components operate across the identical temperature range (-40°C ~ 105°C) and maintain equivalent ESR performance. The higher voltage rating (50 V vs. 25 V) provides additional circuit protection margin. However, verify that the ripple current specifications align with your specific application requirements; the 105TMA050M is rated at 10 mA @ 120 Hz versus the original 20 mA specification.

Q: What is the impact of the different ripple current ratings? A: The NLW1-25 supports 20 mA ripple current at 120 Hz, while the 105TMA050M is rated at 10 mA @ 120 Hz. For general purpose applications with moderate ripple current demands, the 105TMA050M remains suitable. Applications requiring high ripple current handling should evaluate actual circuit conditions and confirm the 10 mA specification meets design margins.

Q: Will the smaller size of the 105TMA050M affect circuit board layout? A: The 105TMA050M measures 5.00mm diameter x 13.00mm length, compared to the NLW1-25 at 7.11mm diameter x 14.49mm length. The substitute is smaller in both dimensions and maintains the same axial, can package type and through-hole mounting configuration. Board layout compatibility is confirmed; the reduced size offers additional placement flexibility without restriction.

Q: Are there any material or certification differences between these components? A: Both the NLW1-25 and 105TMA050M are ROHS3 Compliant aluminum electrolytic capacitors with identical regulatory classifications (ECCN: EAR99; HTSUS: 8532.22.0020). The 105TMA050M carries REACH Unaffected status. No material substitution or compliance conflicts exist.

Q: Why is the original NLW1-25 listed as obsolete? A: The NLW series is end-of-life and no longer manufactured by Cornell Dubilier Electronics. The 105TMA050M from the active TMA series provides equivalent and superior performance characteristics while maintaining ongoing manufacturing support and supply chain availability.