FP3-8R2-R Equivalent & Substitute Parts

Part Overview

The FP3-8R2-R is an 8.2 µH unshielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 2.91 A continuous current with a maximum DC resistance of 74 mOhm and operates across the temperature range of -40°C to 155°C. The part is RoHS compliant and carries an MSL rating of 1 (Unlimited). As an active product with 2126 units in stock, substitute parts may be required due to design optimization, performance enhancement, or supply chain considerations.

Substiute Parts

FP3-8R2-R

Eaton - Electronics DivisionIn Stock: 2233FP3-8R2-R Datasheet

Current PartRFQ

IHLP2525CZER8R2M01

Vishay DaleIn Stock: 36746IHLP2525CZER8R2M01 Datasheet

SimilarRFQ

SRP7028A-8R2M

Bourns Inc.In Stock: 6601SRP7028A-8R2M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FP3-8R2-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 8.2 µH (exact match required)
• Inductance test frequency: 100 kHz
• Mounting type: Surface Mount
• Package classification: Nonstandard
• Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Factors:

• Current rating must equal or exceed 2.91 A
• Saturation current (Isat) must equal or exceed 3.4 A
• DC resistance (DCR) should not significantly exceed 74 mOhm to maintain circuit performance
• Operating temperature range must encompass or extend the -40°C to 155°C specification
• RoHS compliance status must be maintained

The substitute parts IHLP2525CZER8R2M01 and SRP7028A-8R2M both match the primary inductance and frequency specifications. Both substitutes provide higher current ratings (4 A versus 2.91 A) and higher saturation currents (7.5 A versus 3.4 A), offering improved thermal headroom. Both maintain RoHS compliance and MSL 1 ratings. The key trade-offs involve shielding configuration, core material composition, and operating temperature range variations.

Parameter Comparison

Engineering Selection Recommendations

IHLP2525CZER8R2M01 (Vishay Dale): This substitute provides a shielded molded inductor configuration with improved current handling (4 A rated, 7.5 A saturation) and lower DC resistance (68 mOhm). The shielded design reduces electromagnetic interference compared to the unshielded FP3-8R2-R. ROHS3 compliance and MSL 1 rating ensure regulatory alignment. The operating temperature range of -55°C to 125°C covers the lower end of the original specification but does not extend to the 155°C maximum. Physical dimensions are slightly smaller (6.86mm L x 6.47mm W), which may provide layout advantages in space-constrained applications. This part is suitable for applications where EMI reduction and enhanced current capacity are beneficial and where the upper temperature limit of 125°C is acceptable.

SRP7028A-8R2M (Bourns Inc.): This substitute maintains the drum core wirewound construction with carbonyl powder core material, providing a closer architectural match to the FP3-8R2-R. The shielded design offers EMI reduction benefits. Current ratings (4 A rated, 7.5 A saturation) and DC resistance (68 mOhm) match the Vishay part, providing improved performance margins. ROHS3 compliance and AEC-Q200 automotive qualification rating provide additional quality assurance. The operating temperature range of -40°C to 150°C closely aligns with the original specification, extending to 150°C versus the original 155°C. Measured Q factor of 20 at 100 kHz and self-resonant frequency of 17 MHz are provided. Physical dimensions (7.30mm L x 6.60mm W x 3.00mm H) are nearly identical to the FP3-8R2-R. This part is suitable for applications requiring close architectural compatibility, automotive-grade reliability, and extended temperature performance.

Frequently Asked Questions (FAQ)

Q: Can IHLP2525CZER8R2M01 or SRP7028A-8R2M be used as direct replacements for FP3-8R2-R?

A: Both parts match the critical inductance specification of 8.2 µH at 100 kHz test frequency and maintain surface mount compatibility. Both provide higher current ratings and lower DC resistance, which are beneficial for circuit performance. However, the IHLP2525CZER8R2M01 has a maximum operating temperature of 125°C, which does not extend to the original 155°C specification. The SRP7028A-8R2M reaches 150°C, providing closer thermal alignment. Physical dimensions differ slightly but remain within nonstandard package classification. Shielding configuration differs from the original unshielded design, which may affect EMI characteristics in the circuit.

Q: What are the key differences in current handling between these parts?

A: The FP3-8R2-R is rated for 2.91 A continuous current with a 3.4 A saturation current. Both substitute parts are rated for 4 A continuous current with 7.5 A saturation current. This represents a 37% increase in continuous current capacity and a 120% increase in saturation current. These higher ratings provide greater thermal margin and reduce the risk of inductor saturation in applications approaching the original current limits.

Q: How does shielding affect circuit performance?

A: The FP3-8R2-R is unshielded, while both substitute parts are shielded. Shielding reduces electromagnetic field radiation from the inductor, minimizing interference with adjacent circuit components. In applications with sensitive analog circuits or high-frequency signal paths, shielded inductors reduce crosstalk and improve signal integrity. Unshielded inductors may be preferred in applications where magnetic field coupling is intentional or where space constraints are critical.

Q: Are there packaging or handling differences?

A: The FP3-8R2-R is supplied in Tape & Reel (TR) packaging. The IHLP2525CZER8R2M01 is also supplied in Tape & Reel (TR). The SRP7028A-8R2M is supplied in Cut Tape (CT) & Digi-Reel® packaging. All three parts carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special moisture control requirements during storage or handling. Physical dimensions vary slightly, with the IHLP2525CZER8R2M01 being the smallest and the SRP7028A-8R2M being nearly identical to the original.

Q: What compliance certifications should be verified for my application?

A: The FP3-8R2-R carries RoHS Compliant status. Both substitute parts carry ROHS3 Compliant status, which represents an updated regulatory standard. The SRP7028A-8R2M additionally carries AEC-Q200 automotive qualification, which is relevant for automotive and high-reliability applications. All three parts are classified under ECCN EAR99 and HTSUS 8504.50.4000 for export and tariff purposes.

Q: How do inductance tolerances affect circuit design?

A: The FP3-8R2-R carries ±15% inductance tolerance, while both substitute parts carry ±20% tolerance. This means the FP3-8R2-R inductance can range from 6.97 µH to 9.43 µH, while the substitutes range from 6.56 µH to 9.84 µH. In circuits where inductance value is critical for frequency response or impedance matching, the wider tolerance of the substitute parts may require circuit compensation or selection of tighter tolerance variants if available.