SRP0310-2R2K Equivalent & Substitute Parts

Part Overview

The SRP0310-2R2K is a 2.2 µH shielded inductor manufactured by Bourns Inc., designed for surface mount applications with a current rating of 2.3 A and maximum DC resistance of 118mOhm. This component features a metal core construction with shielding, operating across the temperature range of -40°C to 125°C.

The SRP0310-2R2K is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design requirements necessitate alternative specifications within the same functional category.

Substiute Parts

SRP0310-2R2K

Bourns Inc.In Stock: 1054SRP0310-2R2K Datasheet

Current PartRFQ

SRP0320-2R2K

Bourns Inc.In Stock: 3396SRP0320-2R2K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRP0310-2R2K is determined by the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 2.2 µH inductance at the 100 kHz test frequency with ±10% tolerance.

Shielding Configuration: The substitute must provide shielded construction to maintain electromagnetic isolation equivalent to the original design.

Core Material: Metal core construction must be preserved to ensure consistent performance characteristics.

Operating Temperature Range: The substitute must support the full -40°C to 125°C operating window.

Mounting Technology: Surface mount configuration with nonstandard package dimensions must be maintained.

Compliance Standards: RoHS3 compliance and MSL 1 rating must be retained.

The SRP0320-2R2K qualifies as a substitute based on these parameters. While it exhibits higher current ratings (3.4 A versus 2.3 A) and lower DC resistance (64.8mOhm versus 118mOhm), it maintains identical inductance, shielding, core material, temperature range, and compliance certifications. The dimensional footprint remains identical in length and width, though seated height differs.

Parameter Comparison

Engineering Selection Recommendations

The SRP0320-2R2K serves as a direct substitute for the SRP0310-2R2K based on compliance and functional equivalence. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across applications.

The substitute component provides superior electrical performance characteristics. The SRP0320-2R2K delivers higher current handling capacity (3.4 A versus 2.3 A) and reduced DC resistance (64.8mOhm versus 118mOhm), resulting in lower power dissipation and improved thermal performance within the same operating temperature envelope.

Physical compatibility is maintained for length and width dimensions (3.40mm x 3.10mm). The increase in seated height from 1.00mm to 2.00mm requires verification against board layout constraints and clearance requirements specific to the application.

Both components are classified as obsolete products. The SRP0320-2R2K maintains higher inventory availability (3373 pieces versus 947 pieces), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the SRP0320-2R2K replace the SRP0310-2R2K in all applications?

A: The SRP0320-2R2K maintains identical inductance value (2.2 µH), shielding configuration, core material, operating temperature range, and compliance certifications. The primary consideration is the increase in seated height from 1.00mm to 2.00mm. Applications with height-constrained PCB layouts require clearance verification. The improved current rating and reduced DC resistance of the substitute are beneficial for most applications.

Q: What are the key differences between these two inductors?

A: The primary electrical differences are current rating (3.4 A versus 2.3 A), saturation current (4.6 A versus 2.7 A), and DC resistance (64.8mOhm versus 118mOhm). The SRP0320-2R2K also exhibits higher Q factor (34 versus 16 at 7.96MHz). Physical height differs by 1.00mm. Inductance, tolerance, shielding, core material, and temperature range remain identical.

Q: Are there packaging differences between these parts?

A: The SRP0310-2R2K is supplied in standard packaging, while the SRP0320-2R2K is supplied in Tape & Reel (TR) format. Both use nonstandard package cases. The footprint dimensions (length and width) are identical at 3.40mm x 3.10mm.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the SRP0310-2R2K and SRP0320-2R2K are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000. Moisture sensitivity level is MSL 1 (unlimited) for both components.

Q: What is the significance of the lower DC resistance in the SRP0320-2R2K?

A: Lower DC resistance (64.8mOhm versus 118mOhm) reduces resistive losses and power dissipation during operation. This results in lower heat generation and improved efficiency, particularly in applications with sustained current flow.

Q: Can I use the SRP0310-2R2K in place of the SRP0320-2R2K?

A: The SRP0310-2R2K exhibits lower current rating (2.3 A versus 3.4 A) and higher DC resistance (118mOhm versus 64.8mOhm). Applications designed for the SRP0320-2R2K may experience thermal stress or performance degradation if the SRP0310-2R2K is substituted. The SRP0310-2R2K is suitable only for applications with current requirements not exceeding 2.3 A.