NTPA5220LBMB0 Equivalent & Substitute Parts

Part Overview

The NTPA5220LBMB0 is an inrush current limiter manufactured by Murata Electronics, rated at 22 Ohms ±15% with a maximum steady-state current of 2.5 A and a 5.00mm diameter form factor. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain supply chain continuity and support ongoing applications requiring inrush current limiting functionality.

Substiute Parts

NTPA5220LBMB0

Murata ElectronicsIn Stock: 768NTPA5220LBMB0 Datasheet

Current PartRFQ

B57153S0200M000

EPCOS - TDK ElectronicsIn Stock: 12197B57153S0200M000 Datasheet

MFR RecommendedRFQ

B57237S0220M000

EPCOS - TDK ElectronicsIn Stock: 10595B57237S0220M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NTPA5220LBMB0 is determined by the following critical parameters:

• Resistance value: 22 Ohms nominal
• Tolerance specification: ±15% to ±20% acceptable range
• Steady-state current rating: minimum 2.5 A
• Physical form factor: cylindrical inrush current limiter
• Environmental compliance: REACH Unaffected status

Two active substitute parts meet these criteria with varying trade-offs in physical dimensions and current capacity. The B57237S0220M000 maintains identical resistance and exceeds current capacity, while the B57153S0200M000 provides a lower resistance alternative with reduced current rating.

Parameter Comparison

Engineering Selection Recommendations

The B57237S0220M000 is the primary substitute for the NTPA5220LBMB0, offering identical 22 Ohm resistance, higher steady-state current capacity (2.8 A versus 2.5 A), and active product status with UL approval and ROHS3 compliance. The increased physical diameter (15.00mm versus 5.00mm) requires verification of available board space.

The B57153S0200M000 serves as an alternative where space constraints are critical, with a smaller 8.50mm diameter and UL approval. However, the reduced resistance (20 Ohms) and lower current rating (1.6 A) limit its applicability to circuits where these parameters remain within acceptable operating margins.

Both substitute parts maintain REACH Unaffected status and provide improved environmental compliance through ROHS3 certification compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the B57237S0220M000 directly replace the NTPA5220LBMB0 in all applications?

A: The B57237S0220M000 provides electrical equivalence with identical resistance and superior current capacity. Physical form factor differs significantly (15.00mm versus 5.00mm diameter), requiring board layout verification before implementation.

Q: What is the impact of the ±20% tolerance on the B57237S0220M000 compared to the ±15% tolerance of the original part?

A: The wider tolerance on the substitute part expands the acceptable resistance range. Applications requiring tighter tolerance control must evaluate whether the ±20% specification remains within circuit design margins.

Q: Is the B57153S0200M000 suitable for applications requiring 2.5 A steady-state current?

A: No. The B57153S0200M000 is rated for 1.6 A maximum steady-state current, which is insufficient for applications requiring the full 2.5 A capacity of the original part.

Q: Are both substitute parts compliant with current environmental regulations?

A: Yes. Both B57237S0220M000 and B57153S0200M000 are ROHS3 compliant and REACH Unaffected, meeting current environmental standards. The obsolete NTPA5220LBMB0 lacks these certifications.

Q: What factors should determine the choice between the two substitute parts?

A: Selection depends on three primary factors: available physical space (15.00mm versus 8.50mm diameter), required steady-state current (2.8 A versus 1.6 A), and circuit tolerance requirements (±20% for both substitutes). The B57237S0220M000 is preferred for applications matching the original electrical specifications.