FP3-1R0-R Equivalent & Substitute Parts

Part Overview

The FP3-1R0-R is a 1 µH fixed unshielded drum core wirewound inductor manufactured by Eaton Electronics Division, rated for 6.26 A continuous current with a maximum DC resistance of 11.2 mOhm. This component operates across the temperature range of -40°C to 155°C and is packaged in Surface Mount format with RoHS compliance. The part is currently Active in product status with 1319 pieces available in inventory.

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter tolerances for this inductor category, particularly when original stock becomes unavailable or when design requirements permit alternative core materials or shielding configurations.

Substiute Parts

FP3-1R0-R

Eaton - Electronics DivisionIn Stock: 1359FP3-1R0-R Datasheet

Current PartRFQ

IHLP2525CZER1R0M01

Vishay DaleIn Stock: 73087IHLP2525CZER1R0M01 Datasheet

SimilarRFQ

SRP7028A-1R0M

Bourns Inc.In Stock: 17968SRP7028A-1R0M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FP3-1R0-R are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Inductance value: 1 µH (tolerance range ±15% to ±20% acceptable)
• Current rating: Minimum 6.26 A continuous (substitute parts rated 11 A exceed requirement)
• DC resistance: Maximum 11.2 mOhm (substitute parts at 10 mOhm meet specification)
• Saturation current: Minimum 9.5 A (substitute parts rated 22 A exceed requirement)
• Mounting type: Surface Mount
• Package dimensions: Nonstandard form factor, height maximum 3.00 mm
• Operating temperature: Minimum -40°C to 155°C range (substitute parts with -55°C to 125°C or -40°C to 150°C are acceptable)
• Moisture sensitivity: MSL 1 (Unlimited)

Identified Substitutes:

1. IHLP2525CZER1R0M01 (Vishay Dale) – Shielded molded inductor with higher current rating and lower DCR
2. SRP7028A-1R0M (Bourns Inc.) – Shielded drum core wirewound inductor with higher current rating, lower DCR, and automotive qualification

Both substitutes maintain the 1 µH inductance specification and Surface Mount package format with compatible physical dimensions and MSL rating.

Parameter Comparison

Engineering Selection Recommendations

FP3-1R0-R (Eaton Electronics Division)

Select this part when the unshielded configuration is required for the application and the lower current rating of 6.26 A is sufficient. The iron powder core material and unshielded design provide specific electromagnetic characteristics suited to particular circuit topologies. RoHS compliance and unlimited moisture sensitivity rating support standard manufacturing and storage conditions.

IHLP2525CZER1R0M01 (Vishay Dale)

This substitute is suitable when shielded performance is acceptable or required. The molded construction provides enhanced mechanical robustness and the shielded design reduces electromagnetic interference. The 11 A current rating and 10 mOhm DCR provide improved thermal performance compared to the main part. ROHS3 compliance and REACH unaffected status support regulatory requirements. The slightly smaller footprint (6.86mm × 6.47mm) may provide layout advantages in space-constrained designs.

SRP7028A-1R0M (Bourns Inc.)

This substitute combines shielded performance with drum core wirewound construction and carbonyl powder core material. The 11 A current rating and 10 mOhm DCR exceed the main part specifications. AEC-Q200 automotive qualification and measured Q factor of 20 @ 100kHz provide additional performance data. ROHS3 compliance and REACH unaffected status support regulatory requirements. The operating temperature range of -40°C to 150°C covers the main part's lower temperature limit. Physical dimensions (7.30mm × 6.60mm × 3.00mm) are closely matched to the original part.

Frequently Asked Questions (FAQ)

Q: Can IHLP2525CZER1R0M01 or SRP7028A-1R0M be used as direct replacements for FP3-1R0-R?

A: Both parts meet the core electrical requirements: 1 µH inductance, Surface Mount package, compatible physical dimensions, and MSL 1 rating. The primary differences are shielding (both substitutes are shielded versus unshielded original), higher current ratings (11 A versus 6.26 A), and lower DCR (10 mOhm versus 11.2 mOhm maximum). Substitution is valid when the circuit design permits shielded inductors and does not require the specific electromagnetic characteristics of an unshielded iron powder core.

Q: What is the impact of switching from unshielded to shielded inductors?

A: Shielded inductors reduce electromagnetic radiation and susceptibility to external magnetic fields. This affects circuit performance in EMI-sensitive applications. The shielded substitutes (IHLP2525CZER1R0M01 and SRP7028A-1R0M) provide this additional isolation. Verify that the circuit design does not depend on the unshielded configuration's specific coupling characteristics.

Q: Are there temperature range differences that affect substitution?

A: The FP3-1R0-R operates from -40°C to 155°C. IHLP2525CZER1R0M01 operates from -55°C to 125°C (lower maximum temperature by 30°C). SRP7028A-1R0M operates from -40°C to 150°C (lower maximum temperature by 5°C). For applications requiring operation above 125°C, only SRP7028A-1R0M or the original FP3-1R0-R are suitable.

Q: How do the DC resistance values compare?

A: FP3-1R0-R has a maximum DCR of 11.2 mOhm. Both substitutes have a maximum DCR of 10 mOhm, representing a 10.7% improvement. Lower DCR reduces resistive losses and heat generation, improving efficiency in high-current applications.

Q: What is the significance of the Q factor specification in SRP7028A-1R0M?

A: The Q factor of 20 @ 100kHz indicates the quality factor at the test frequency. This parameter is not provided for the original FP3-1R0-R or IHLP2525CZER1R0M01. Higher Q values indicate lower losses and better performance in resonant circuits. This additional specification data for SRP7028A-1R0M supports detailed circuit analysis when required.

Q: Does AEC-Q200 qualification on SRP7028A-1R0M affect substitution decisions?

A: AEC-Q200 is an automotive qualification standard. This certification indicates the part has undergone automotive-grade reliability testing. For non-automotive applications, this qualification provides additional assurance of component reliability but is not a substitution requirement. For automotive applications, SRP7028A-1R0M offers qualified status that may be required by design specifications.

Q: Are there packaging or supply chain considerations?

A: All three parts are supplied in Tape & Reel (TR) packaging with MSL 1 (Unlimited) moisture sensitivity rating. Inventory levels differ: FP3-1R0-R has 1319 pieces, IHLP2525CZER1R0M01 has 73022 pieces, and SRP7028A-1R0M has 17918 pieces. Higher inventory availability for IHLP2525CZER1R0M01 may support supply chain continuity.