SRP1245C-2R2M Equivalent & Substitute Parts

Part Overview

The SRP1245C-2R2M is a 2.2 µH shielded inductor manufactured by Bourns Inc., rated for 25 A continuous current with a maximum DC resistance of 5 mOhm. This surface mount component is designed for high-current applications requiring low impedance and electromagnetic shielding. The part is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent substitute parts is necessary to ensure design continuity and procurement availability for new production runs and ongoing support of existing applications.

Substiute Parts

SRP1245C-2R2M

Bourns Inc.In Stock: 1472SRP1245C-2R2M Datasheet

Current PartRFQ

SRP1245CC-2R2M

Bourns Inc.In Stock: 1420SRP1245CC-2R2M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SRP1245C-2R2M are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 2.2 µH
• Inductance tolerance: ±20%
• Current rating: 25 A minimum
• Saturation current (Isat): 40 A minimum
• DC resistance: 5 mOhm maximum
• Operating temperature range: -40°C to 125°C minimum
• Shielding: Shielded construction required

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Packaging format: Tape & Reel
• Physical dimensions: Compatible with 0.531" L × 0.496" W footprint (±tolerance)
• Height seated: 0.197" (5.00mm) maximum

Compliance Requirements:

• RoHS3 compliance
• Moisture Sensitivity Level 1
• REACH Unaffected status

The SRP1245CC-2R2M qualifies as a direct substitute because it meets all specified electrical parameters, maintains mechanical compatibility within dimensional tolerances, and satisfies all regulatory compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The SRP1245CC-2R2M is the qualified substitute for the SRP1245C-2R2M based on the following engineering factors:

Electrical Performance: Both parts deliver identical inductance (2.2 µH), current rating (25 A), saturation current (40 A), and DC resistance (5 mOhm maximum). These parameters ensure equivalent electrical performance in circuit applications.

Mechanical Compatibility: Physical dimensions are compatible within acceptable tolerances. The width variance of 0.004" (0.10 mm) is within standard manufacturing tolerances for nonstandard surface mount packages and does not affect PCB footprint compatibility or assembly processes.

Regulatory Compliance: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status, satisfying all environmental and regulatory requirements for equivalent deployment.

Product Availability: The SRP1245CC-2R2M carries Active product status with confirmed inventory availability (1374 pcs), whereas the main part is designated Last Time Buy. This substitution ensures continued procurement capability and supply chain continuity.

Core Material Difference: The substitute employs Carbonyl Powder core material versus Metal core in the original part. Both constructions achieve the specified electrical parameters and shielding requirements within the defined operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the SRP1245CC-2R2M be used as a direct replacement for the SRP1245C-2R2M in existing designs?

A: Yes. Both parts meet identical electrical specifications (2.2 µH, 25 A, 5 mOhm DCR) and mechanical requirements (surface mount, nonstandard package, tape & reel format). Physical dimensions are compatible within standard manufacturing tolerances. No circuit redesign is required.

Q: What is the significance of the width difference (0.496" vs 0.492")?

A: The 0.004" (0.10 mm) width variance falls within standard manufacturing tolerances for nonstandard surface mount packages. This difference does not affect PCB footprint compatibility, assembly equipment clearances, or component placement accuracy.

Q: Are there any performance differences between the Metal core and Carbonyl Powder core constructions?

A: Both core materials deliver the specified electrical parameters within the defined operating range (-40°C to 125°C). The substitute part meets all electrical requirements including inductance, current rating, saturation current, and DC resistance. Core material selection does not affect functional equivalence for this application.

Q: Why is the main part designated Last Time Buy?

A: Last Time Buy status indicates discontinued production. The SRP1245CC-2R2M, with Active product status and available inventory, provides continuity for ongoing procurement and production requirements.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the SRP1245C-2R2M and SRP1245CC-2R2M are ROHS3 compliant, carry MSL Level 1 rating, and maintain REACH Unaffected status, satisfying all environmental and regulatory requirements.

Q: What is the frequency test condition for inductance specification?

A: Inductance is measured at 100 kHz for both parts, ensuring consistent specification basis for circuit design calculations and performance validation.

Q: Can these parts be used interchangeably in high-current applications?

A: Yes. Both parts are rated for 25 A continuous current with 40 A saturation current and 5 mOhm maximum DC resistance, making them suitable for equivalent deployment in high-current circuit topologies.