FSLU2520-12NKP2 Equivalent & Substitute Parts

Part Overview

The FSLU2520-12NKP2 is a 12 nH unshielded drum core wirewound inductor manufactured by Toko America Inc., rated for 690 mA continuous current with a maximum DC resistance of 170mOhm. This surface mount component is housed in a 1008 (2520 Metric) package and operates across the temperature range of -40°C to 85°C.

The FSLU2520-12NKP2 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

FSLU2520-12NKP2

Toko America Inc.In Stock: 4649FSLU2520-12NKP2 Datasheet

Current PartRFQ

CW252016-12NK

Bourns Inc.In Stock: 772CW252016-12NK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSLU2520-12NKP2 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must align for a valid substitution:

Critical Matching Parameters:

• Inductance value: 12 nH
• Inductance tolerance: ±10%
• Package / Case: 1008 (2520 Metric)
• Mounting type: Surface Mount
• Shielding configuration: Unshielded

Allowable Parameter Variations: Substitute parts may differ in current rating, DC resistance, core material, operating temperature range, and product status, provided the critical parameters remain constant. These variations are acceptable when the substitute part meets or exceeds the electrical performance requirements of the application.

The CW252016-12NK from Bourns Inc. satisfies all critical matching parameters and qualifies as a direct substitute for the obsolete FSLU2520-12NKP2.

Parameter Comparison

Engineering Selection Recommendations

The CW252016-12NK is an active product with current manufacturing support and ROHS3 compliance, addressing the obsolescence status of the FSLU2520-12NKP2. This substitute maintains identical inductance, tolerance, package, and mounting specifications.

The CW252016-12NK exhibits a lower maximum DC resistance (90mOhm versus 170mOhm), which represents improved electrical performance. The current rating of the substitute is 600 mA compared to 690 mA in the original part. Applications operating at or below 600 mA continuous current are fully compatible with this substitution. Applications requiring current levels between 600 mA and 690 mA require design review to confirm thermal and performance margins remain acceptable.

The extended operating temperature range of the CW252016-12NK (-40°C to 125°C versus -40°C to 85°C) provides additional thermal headroom for demanding environments. The ceramic core material of the substitute differs from the ferrite core of the original part; both configurations are suitable for unshielded drum core wirewound inductor applications at the specified inductance and frequency range.

Frequently Asked Questions (FAQ)

Q: Can the CW252016-12NK directly replace the FSLU2520-12NKP2 in existing designs?

A: The CW252016-12NK is mechanically and electrically compatible for applications operating at 600 mA or below. Both parts share identical inductance (12 nH), tolerance (±10%), package (1008 / 2520 Metric), and mounting configuration. Applications requiring the full 690 mA current rating of the original part require evaluation of the 600 mA rating of the substitute.

Q: What is the significance of the different core materials (Ferrite vs. Ceramic)?

A: Both ferrite and ceramic core materials are suitable for unshielded drum core wirewound inductors in this inductance and frequency range. The core material difference does not prevent substitution when all other electrical parameters remain within specification.

Q: Does the lower DC resistance of the CW252016-12NK affect compatibility?

A: Lower DC resistance (90mOhm versus 170mOhm) represents improved performance. This reduction decreases resistive losses and heat generation, which is beneficial for most applications. No design modifications are required due to this improvement.

Q: Is the RoHS compliance difference significant?

A: The CW252016-12NK is ROHS3 compliant, while the FSLU2520-12NKP2 is non-compliant. For applications subject to RoHS regulations or customer requirements, the Bourns substitute satisfies compliance requirements. For applications without RoHS mandates, this difference does not affect functional compatibility.

Q: Are there packaging differences between the two parts?

A: Both parts use identical 1008 (2520 Metric) surface mount packages with matching physical dimensions (0.098" L x 0.079" W, 2.50mm x 2.00mm) and maximum seated height (0.071" / 1.80mm). The original part is supplied in Cut Tape (CT) packaging, while the substitute is supplied in Tape & Reel (TR) packaging. This packaging difference affects handling and assembly processes but not component functionality.