NF15AA0330M-- Inrush Current Limiter Equivalent & Substitute Parts

Part Overview

The NF15AA0330M-- is a 33 Ohm inrush current limiter manufactured by KYOCERA AVX, designed for thermal management in power supply circuits. This component operates at a steady-state maximum current of 2.5 A with a resistance tolerance of ±20% and a physical diameter of 0.591" (15.00mm).

The NF15AA0330M-- is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

NF15AA0330M--

KYOCERA AVXIn Stock: 1150NF15AA0330M-- Datasheet

Current PartRFQ

B57237S0330M000

EPCOS - TDK ElectronicsIn Stock: 25784B57237S0330M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NF15AA0330M-- is determined by the following critical electrical and mechanical parameters:

• Resistance value: 33 Ohms
• Tolerance: ±20%
• Steady-state current rating: 2.5 A
• Physical diameter: 0.591" (15.00mm)
• Lead spacing compatibility: 0.300" (7.62mm) nominal

The B57237S0330M000 manufactured by EPCOS - TDK Electronics meets all specified electrical parameters and maintains mechanical compatibility within acceptable tolerances. This substitute is classified as active and carries current regulatory compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The B57237S0330M000 is the designated manufacturer-recommended substitute for the NF15AA0330M--. Selection of this substitute is supported by:

• Identical electrical specifications (33 Ohms, ±20%, 2.5 A)
• Mechanical compatibility with 0.591" (15.00mm) diameter and lead spacing within 0.005" (0.127mm) tolerance
• Active product status ensuring ongoing availability
• ROHS3 compliance and UL approval certification
• Equivalent moisture sensitivity level (MSL 1 - Unlimited)

The lead spacing difference of 0.005" (0.250mm) between the two parts is within standard PCB design tolerances for through-hole component placement.

Frequently Asked Questions (FAQ)

Q: What makes B57237S0330M000 a valid substitute for NF15AA0330M--?

A: Both components share identical electrical specifications: 33 Ohm resistance, ±20% tolerance, and 2.5 A steady-state current rating. Physical dimensions are compatible, with lead spacing differing by only 0.005" (0.250mm), which is within standard PCB manufacturing tolerances.

Q: Are there any compliance differences between the original and substitute?

A: Yes. The NF15AA0330M-- is RoHS non-compliant, while the B57237S0330M000 is ROHS3 compliant. The substitute also carries UL approval certification. These differences may be relevant for applications subject to regulatory requirements.

Q: Will the B57237S0330M000 fit in existing PCB layouts designed for NF15AA0330M--?

A: The 0.591" (15.00mm) diameter is identical. Lead spacing differs by 0.005" (0.250mm), which is acceptable for standard through-hole PCB designs. Verify specific PCB pad spacing in your design documentation.

Q: What is the availability status of each part?

A: The NF15AA0330M-- is obsolete with limited remaining inventory. The B57237S0330M000 is an active product with significantly higher inventory availability, supporting long-term supply chain continuity.

Q: Are the moisture sensitivity levels equivalent?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.