SRP1235-8R2M Equivalent & Substitute Parts

Part Overview

The SRP1235-8R2M is an 8.2 µH shielded inductor manufactured by Bourns Inc., rated for 8.5 A continuous current with a maximum DC resistance of 28 mOhm. This component features an iron core construction and is designed for surface mount applications in nonstandard package dimensions. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

SRP1235-8R2M

Bourns Inc.In Stock: 1079SRP1235-8R2M Datasheet

Current PartRFQ

SRP1238A-8R2M

Bourns Inc.In Stock: 2013SRP1238A-8R2M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRP1235-8R2M is determined by the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 8.2 µH with ±20% tolerance
• Current rating: minimum 8.5 A continuous
• DC resistance: 28 mOhm maximum
• Self-resonant frequency: 12 MHz
• Shielding requirement: Shielded construction

Mechanical Compatibility Criteria:

• Mounting type: Surface mount
• Package classification: Nonstandard
• Physical dimensions: Compatible with PCB footprint requirements

Compliance Requirements:

• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

The SRP1238A-8R2M meets all specified electrical parameters and maintains mechanical compatibility through surface mount construction and equivalent package classification.

Parameter Comparison

Engineering Selection Recommendations

The SRP1238A-8R2M is a direct electrical equivalent to the SRP1235-8R2M with the following considerations:

Advantages of SRP1238A-8R2M:

• Active product status ensures ongoing availability and supply chain continuity
• Higher saturation current rating (16 A vs. 12 A) provides additional design margin
• AEC-Q200 automotive qualification rating
• Carbonyl powder core construction vs. iron core in original design

Compatibility Notes:

• Both components maintain identical inductance, tolerance, current rating, and DC resistance specifications
• Operating temperature range of SRP1238A-8R2M (-40°C ~ 150°C) covers the lower bound of the original part (-55°C ~ 150°C); applications requiring operation below -40°C require evaluation
• Physical dimensions differ slightly; PCB footprint compatibility must be confirmed for specific applications

Frequently Asked Questions (FAQ)

Q: Can the SRP1238A-8R2M directly replace the SRP1235-8R2M in all applications?

A: The SRP1238A-8R2M meets all critical electrical specifications (inductance, current rating, DC resistance, self-resonant frequency) and maintains surface mount compatibility. Applications operating below -40°C require thermal performance evaluation. Physical dimension differences necessitate footprint verification.

Q: What is the primary reason for substitution?

A: The SRP1235-8R2M is obsolete. The SRP1238A-8R2M is an active product from the same manufacturer with equivalent electrical performance and superior saturation current rating.

Q: Are there compliance differences between these parts?

A: Both components are ROHS3 compliant with MSL 1 rating. The SRP1238A-8R2M carries AEC-Q200 automotive qualification, which the SRP1235-8R2M does not specify.

Q: How do the core materials differ?

A: The SRP1235-8R2M uses iron core construction, while the SRP1238A-8R2M uses carbonyl powder core construction. Both achieve the specified electrical parameters and shielding performance.

Q: What packaging format is available for the substitute part?

A: The SRP1238A-8R2M is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.