LPWI201210S1R0T Equivalent & Substitute Parts

Part Overview

The LPWI201210S1R0T is a 1 µH shielded thin film inductor manufactured by Littelfuse Inc., rated for 2.7 A continuous current with a maximum DC resistance of 60 mOhm. This component is designed for surface mount applications in the 0805 (2012 Metric) package format. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing production and design continuity.

Substiute Parts

LPWI201210S1R0T

Littelfuse Inc.In Stock: 988LPWI201210S1R0T Datasheet

Current PartRFQ

TFM201610GHM-1R0MTAA

TDK CorporationIn Stock: 4240TFM201610GHM-1R0MTAA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LPWI201210S1R0T is determined by the following critical parameters:

• Inductance Value: Must be 1 µH with ±20% tolerance
• DC Resistance (DCR): Must not exceed 60 mOhm
• Current Rating: Must support minimum 2.7 A continuous current
• Saturation Current (Isat): Must meet or exceed 3.2 A
• Shielding: Must be shielded construction
• Core Material: Metal or metal composite core acceptable
• Operating Temperature: Must support -40°C to 125°C range
• Package Compatibility: Surface mount construction required; package footprint must be compatible with 0805 (2012 Metric) or equivalent land pattern dimensions
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The TFM201610GHM-1R0MTAA from TDK Corporation meets all substitution criteria while offering improved current handling capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The TFM201610GHM-1R0MTAA is a qualified substitute for the LPWI201210S1R0T based on the following engineering criteria:

Electrical Compatibility: The substitute part maintains identical inductance value, tolerance, and DC resistance specifications. Current rating and saturation current are higher, providing additional design margin without introducing performance degradation.

Physical Compatibility: The 0806 (2016 Metric) package is physically compatible with 0805 (2012 Metric) land patterns. The substitute is 0.016" (0.40mm) wider but maintains identical length and height, allowing direct substitution in most PCB layouts without redesign.

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring equivalent environmental and regulatory standing.

Product Status: The substitute part holds active product status with established supply chain availability (4132 pcs in stock), whereas the original part is obsolete. This transition eliminates long-term supply risk.

Frequently Asked Questions (FAQ)

Q: Can the TFM201610GHM-1R0MTAA be used as a direct replacement for the LPWI201210S1R0T?

A: Yes. The substitute meets all critical electrical parameters: 1 µH inductance, 60 mOhm maximum DC resistance, and supports the required 2.7 A current rating. Physical compatibility is confirmed through package footprint analysis.

Q: What is the difference between the 0805 and 0806 packages?

A: The 0805 (2012 Metric) measures 2.00mm length × 1.20mm width. The 0806 (2016 Metric) measures 2.00mm length × 1.60mm width. The substitute is 0.40mm wider but maintains identical length and height. Most PCB designs accommodate this variation without layout modification.

Q: Does the higher current rating of the substitute part affect circuit performance?

A: No. The substitute's 3.1 A rating and 3.6 A saturation current exceed the original 2.7 A and 3.2 A specifications. This provides additional design margin and thermal headroom without altering electrical behavior at the specified operating point.

Q: Are there any compliance differences between the two parts?

A: Both parts are ROHS3 compliant with MSL 1 rating. No compliance differences exist. The substitute includes REACH Unaffected status, providing additional regulatory documentation.

Q: What is the impact of the different core materials?

A: The original uses metal composite core; the substitute uses metal core. Both are shielded thin film constructions with identical electrical performance at the specified inductance and frequency. The material difference does not affect substitution suitability.