SRP1235-2R2M Equivalent & Substitute Parts

Part Overview

The SRP1235-2R2M is a 2.2 µH shielded inductor manufactured by Bourns Inc., rated for 16 A continuous current with a maximum DC resistance of 8 mOhm. This component is designed for surface mount applications requiring compact, shielded inductive filtering in power conversion and signal conditioning circuits. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

SRP1235-2R2M

Bourns Inc.In Stock: 769SRP1235-2R2M Datasheet

Current PartRFQ

SRP1238A-2R2M

Bourns Inc.In Stock: 6342SRP1238A-2R2M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRP1235-2R2M is determined by the following critical electrical and mechanical parameters:

• Inductance Value: 2.2 µH (±20% tolerance)
• Current Rating: Minimum 16 A continuous
• DC Resistance: 8 mOhm maximum
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Package Compatibility: Nonstandard package footprint

The SRP1238A-2R2M meets all substitution criteria. Both components share identical inductance, current rating, and DCR specifications. The substitute maintains shielded construction and surface mount compatibility, with a comparable physical footprint suitable for direct replacement in most applications.

Parameter Comparison

Engineering Selection Recommendations

The SRP1238A-2R2M is the direct substitute for the obsolete SRP1235-2R2M. Both components are ROHS3 compliant and carry identical electrical specifications for inductance, current rating, and DC resistance. The substitute part is currently in active production status with higher inventory availability, ensuring supply chain continuity.

The SRP1238A-2R2M features an elevated saturation current rating of 29 A compared to 20 A in the original part, providing additional design margin without compromising the specified 16 A operating current. The substitute maintains the required shielded construction and surface mount configuration for direct board-level replacement.

The operating temperature range of the substitute extends to -40°C minimum, which is suitable for most industrial and commercial applications. Applications requiring the full -55°C lower temperature limit of the original part should be evaluated against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the SRP1238A-2R2M be used as a direct replacement for the SRP1235-2R2M?

A: Yes. Both components share identical inductance (2.2 µH), current rating (16 A), and DC resistance (8 mOhm Max) specifications. The substitute maintains shielded construction and surface mount compatibility, making it suitable for direct board-level replacement.

Q: What are the physical dimension differences between these parts?

A: The SRP1235-2R2M measures 0.547" L × 0.531" W × 0.146" H (13.90mm × 14.60mm × 3.70mm). The SRP1238A-2R2M measures 0.531" L × 0.492" W × 0.138" H (14.60mm × 12.50mm × 4.60mm). Both use nonstandard packages; verify PCB footprint compatibility before implementation.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The SRP1238A-2R2M carries AEC-Q200 automotive qualification, providing additional reliability assurance for demanding applications.

Q: What is the difference in saturation current between these parts?

A: The SRP1235-2R2M has a saturation current (Isat) of 20 A, while the SRP1238A-2R2M has 29 A. Both parts operate at 16 A continuous current; the higher saturation rating in the substitute provides additional design margin.

Q: Does the operating temperature range difference affect substitution?

A: The SRP1235-2R2M operates from -55°C to 150°C, while the SRP1238A-2R2M operates from -40°C to 150°C. For applications requiring operation below -40°C, verify that system requirements can be met within the substitute's temperature range.