LPWI252010HR68T Equivalent & Substitute Parts

Part Overview

The LPWI252010HR68T is a 680 nH shielded thin film inductor manufactured by Littelfuse Inc., rated for 4.1 A continuous current with a maximum DC resistance of 37 mOhm. This component is designed for surface mount applications in the 1008 (2520 Metric) package format. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing production and design requirements.

Substiute Parts

LPWI252010HR68T

Littelfuse Inc.In Stock: 887LPWI252010HR68T Datasheet

Current PartRFQ

SRN2510F-R68M

Bourns Inc.In Stock: 1079SRN2510F-R68M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LPWI252010HR68T is determined by the following critical parameters:

• Inductance Value: 680 nH with ±20% tolerance
• Package Format: 1008 (2520 Metric) surface mount
• Current Rating: Minimum 4.1 A continuous current capability
• Saturation Current: Minimum 5 A
• DC Resistance: Maximum 40 mOhm (allowing minor increase from 37 mOhm specification)
• Operating Temperature: -40°C ~ 125°C
• Compliance: ROHS3 Compliant

The SRN2510F-R68M from Bourns Inc. meets these substitution criteria with compatible electrical and mechanical specifications within the defined tolerance ranges.

Parameter Comparison

Engineering Selection Recommendations

The SRN2510F-R68M is a direct functional substitute for the LPWI252010HR68T. Both components are ROHS3 compliant and maintain identical operating temperature ranges. The substitute part offers improved product status as an active component with current manufacturing availability, addressing the obsolescence of the original part.

The SRN2510F-R68M provides equivalent or superior electrical performance across all critical parameters: current rating increases from 4.1 A to 4.2 A, saturation current increases from 5 A to 5.5 A, and DC resistance remains within acceptable limits at 40 mOhm maximum. Physical dimensions and package format are identical, ensuring direct PCB compatibility without layout modifications.

The transition from shielded to semi-shielded construction represents a functional trade-off that maintains electromagnetic performance characteristics within the specified inductance tolerance and frequency range.

Frequently Asked Questions (FAQ)

Q: Can the SRN2510F-R68M replace the LPWI252010HR68T in existing designs?

A: Yes. Both components share identical inductance values, package dimensions, and operating temperature ranges. The substitute part meets or exceeds all critical electrical parameters including current rating, saturation current, and DC resistance specifications.

Q: What is the difference between shielded and semi-shielded construction?

A: Shielded inductors provide complete electromagnetic containment, while semi-shielded inductors offer partial shielding. For 680 nH inductors at 1 MHz test frequency, semi-shielded construction maintains the specified inductance tolerance and performance within the defined frequency range.

Q: Are both parts RoHS compliant?

A: Yes. Both the LPWI252010HR68T and SRN2510F-R68M are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: Will PCB layout require modification for the substitute part?

A: No. The SRN2510F-R68M maintains identical physical dimensions (0.098" L x 0.079" W, 0.039" max height) and the same 1008 (2520 Metric) package format, allowing direct footprint compatibility without layout changes.

Q: What is the availability status of each part?

A: The LPWI252010HR68T is obsolete. The SRN2510F-R68M is an active product with current manufacturing support and documented inventory availability.