NLW1-50 Equivalent & Substitute Parts Reference

Part Overview

The NLW1-50 is a 1 µF, 50 V aluminum electrolytic capacitor in axial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The NLW series has been discontinued, necessitating evaluation of active alternative components that meet the electrical and mechanical requirements of the original specification.

Substiute Parts

NLW1-50

Cornell Dubilier Electronics (CDE)In Stock: 1034NLW1-50 Datasheet

Current PartRFQ

105TMA050M

Cornell Dubilier / Illinois CapacitorIn Stock: 1171105TMA050M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NLW1-50 is based on strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 1 µF (exact match required)
• Voltage Rating: 50 V (exact match required)
• Polarization: Polar (exact match required)
• Package Type: Axial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -40°C ~ 105°C (minimum requirement)

Allowable Variation Parameters:

• Tolerance: The NLW1-50 specifies -10%, +75%. Substitute parts with tighter tolerance specifications (such as ±20%) are acceptable as they represent improved performance.
• ESR: Substitute parts with ESR values within 10% of the original specification are acceptable.
• Lifetime @ 105°C: Substitute parts with equal or greater lifetime ratings are acceptable.
• Ripple Current: Substitute parts with equal or greater ripple current ratings are acceptable.

The 105TMA050M meets all mandatory matching parameters and demonstrates improved performance characteristics in tolerance, ESR, and lifetime specifications, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The 105TMA050M qualifies as a direct substitute for the NLW1-50 based on the following engineering criteria:

Electrical Equivalence: Both components share identical capacitance (1 µF), voltage rating (50 V), and operating temperature range (-40°C ~ 105°C). ESR values are equivalent within 1%, ensuring comparable circuit performance.

Mechanical Compatibility: Both components utilize axial, can package configuration with through-hole mounting. The 105TMA050M is physically smaller (5.00mm x 13.00mm versus 7.11mm x 14.49mm), which provides layout flexibility without compromising electrical function.

Performance Enhancement: The 105TMA050M demonstrates superior specifications in two critical areas: tolerance specification (±20% versus -10%, +75%) and lifetime rating (2000 Hrs @ 105°C versus 1000 Hrs @ 105°C). These improvements enhance design reliability and reduce performance variability.

Regulatory Compliance: Both components maintain ROHS3 compliance and identical ECCN/HTSUS classifications, ensuring regulatory continuity.

Production Status: The 105TMA050M is classified as active product with confirmed inventory availability (1094 Pcs), whereas the NLW1-50 is obsolete. This transition ensures long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 105TMA050M be used as a direct replacement for the NLW1-50 in existing designs?

A: Yes. The 105TMA050M meets all mandatory electrical and mechanical specifications. Identical capacitance, voltage rating, polarization, package type, and mounting configuration ensure functional equivalence. The smaller physical dimensions of the 105TMA050M may provide additional PCB layout benefits.

Q: What is the significance of the tolerance difference between -10%, +75% and ±20%?

A: The NLW1-50 tolerance of -10%, +75% indicates asymmetrical tolerance with a wider positive deviation. The 105TMA050M tolerance of ±20% is symmetrical and tighter overall, resulting in more predictable capacitance values and reduced circuit performance variability.

Q: Does the smaller physical size of the 105TMA050M affect circuit performance?

A: No. Physical size reduction does not affect electrical performance. The smaller dimensions (5.00mm x 13.00mm versus 7.11mm x 14.49mm) result from improved manufacturing technology and provide layout flexibility without compromising electrical specifications.

Q: Are there any thermal performance differences between these components?

A: The 105TMA050M demonstrates superior thermal performance with a lifetime rating of 2000 Hrs @ 105°C compared to the NLW1-50 rating of 1000 Hrs @ 105°C. Both components operate across the identical temperature range of -40°C ~ 105°C.

Q: What is the ripple current handling capability of the 105TMA050M?

A: The 105TMA050M is rated for 10 mA @ 120 Hz (low frequency) and 20 mA @ 50 kHz (high frequency). These specifications support general-purpose applications within the specified operating parameters.

Q: Is the 105TMA050M available for immediate procurement?

A: Yes. The 105TMA050M is classified as active product with 1094 Pcs confirmed in stock, ensuring supply availability for production requirements.