SRP2012TMA-R33M Equivalent & Substitute Parts

Part Overview

The SRP2012TMA-R33M is a 330 nH shielded metal powder core inductor manufactured by Bourns Inc., rated for 5.9 A continuous current with a maximum DC resistance of 18 mOhm. This surface mount component is packaged in the 0806 (2016 Metric) form factor and is designed for high-frequency applications requiring low inductance values with controlled saturation characteristics. The part maintains Active product status and carries AEC-Q200 automotive qualification. Substitute parts are identified when equivalent inductance, package dimensions, shielding characteristics, and compliance ratings align with application requirements, enabling component sourcing flexibility across multiple manufacturers.

Substiute Parts

SRP2012TMA-R33M

Bourns Inc.In Stock: 2458SRP2012TMA-R33M Datasheet

Current PartRFQ

DFE201612PD-R33M=P2

Murata ElectronicsIn Stock: 7200DFE201612PD-R33M=P2 Datasheet

SimilarRFQ

DFE2MCAHR33MJ0L

Murata ElectronicsIn Stock: 865DFE2MCAHR33MJ0L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SRP2012TMA-R33M is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Inductance value: 330 nH at 1 MHz test frequency
• Inductance tolerance: ±20%
• Package / Case: 0806 (2016 Metric)
• Shielding: Shielded configuration
• Mounting type: Surface Mount
• Physical dimensions: 0.079" L x 0.063" W (2.00mm x 1.60mm), Height 0.047" (1.20mm) maximum
• Compliance: AEC-Q200 rated, ROHS3 compliant, REACH unaffected

Allowable Parameter Variations: Substitute parts may differ in the following parameters while maintaining functional equivalence:

• Current rating (continuous): Substitutes must equal or exceed the application requirement
• Saturation current (Isat): Substitutes must equal or exceed the application requirement
• DC resistance (DCR): Substitutes may exceed the maximum value if application thermal budget permits
• Operating temperature range: Substitutes must cover the application operating window
• Core material type: Metal core construction (powder or drum core wirewound)
• Manufacturer: Different manufacturers acceptable if all critical parameters align

The identified substitute parts DFE201612PD-R33M=P2 and DFE2MCAHR33MJ0L from Murata Electronics meet the critical matching parameters but exhibit reduced current ratings and increased DC resistance compared to the primary part.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: SRP2012TMA-R33M

The SRP2012TMA-R33M from Bourns Inc. is the specified component and remains the preferred selection when availability and cost permit. This part delivers the highest current rating (5.9 A continuous, 7 A saturation) and lowest DC resistance (18 mOhm maximum), providing optimal performance margin for applications requiring sustained high-current operation. The extended operating temperature range (-55°C to 150°C) accommodates demanding thermal environments. Active product status and AEC-Q200 qualification ensure long-term supply continuity and automotive-grade reliability.

Substitute: DFE201612PD-R33M=P2 (Murata Electronics)

The DFE201612PD-R33M=P2 is suitable for applications where the continuous current requirement does not exceed 3.8 A and saturation current remains below 4.5 A. This substitute maintains identical inductance, package dimensions, and shielding characteristics. The increased DC resistance (26 mOhm maximum) generates additional heat dissipation; thermal analysis is required for applications operating near the 3.8 A rating. The reduced operating temperature minimum (-40°C versus -55°C) restricts use in extreme cold environments. AEC-Q200 qualification and ROHS3 compliance are maintained. This part is suitable for general industrial and commercial applications within the specified current envelope.

Substitute: DFE2MCAHR33MJ0L (Murata Electronics)

The DFE2MCAHR33MJ0L provides the closest operating temperature coverage (-40°C to 150°C) among substitute options, matching the upper temperature limit of the primary part. Current ratings (3.9 A continuous, 4.2 A saturation) and DC resistance (29 mOhm maximum) are comparable to the DFE201612PD-R33M=P2. This substitute is appropriate for applications operating at or below 3.9 A continuous current in temperature ranges from -40°C to 150°C. The highest DC resistance among all options requires thermal verification. AEC-Q200 and ROHS3 compliance are maintained.

Selection Criteria Summary:

• Current requirement ≤ 3.8 A: DFE201612PD-R33M=P2 acceptable; verify thermal performance with 26 mOhm DCR
• Current requirement ≤ 3.9 A with extended high-temperature operation: DFE2MCAHR33MJ0L acceptable; verify thermal performance with 29 mOhm DCR
• Current requirement > 3.9 A or minimum temperature < -40°C: SRP2012TMA-R33M required
• All substitutes: Verify PCB layout thermal management and confirm application current profile does not exceed saturation limits

Frequently Asked Questions (FAQ)

Q: Can DFE201612PD-R33M=P2 or DFE2MCAHR33MJ0L be used as direct drop-in replacements for SRP2012TMA-R33M?

A: Physical and electrical compatibility exists for PCB layout and reflow soldering processes. However, functional equivalence depends on application current requirements. Both Murata substitutes are rated for lower continuous current (3.8 A and 3.9 A respectively) compared to the Bourns part (5.9 A). Applications operating above 3.9 A continuous current cannot use these substitutes. Saturation current limits (4.5 A and 4.2 A) must also be verified against application peak current profiles.

Q: What is the impact of increased DC resistance in the substitute parts?

A: The Murata substitutes exhibit higher DC resistance: DFE201612PD-R33M=P2 at 26 mOhm (versus 18 mOhm) and DFE2MCAHR33MJ0L at 29 mOhm (versus 18 mOhm). At rated current, this generates additional resistive heating. For example, at 3.8 A, the DFE201612PD-R33M=P2 dissipates approximately 0.375 W compared to 0.259 W for the SRP2012TMA-R33M at the same current. Thermal analysis of the PCB layout and component placement is required to confirm acceptable junction temperatures.

Q: Are all three parts qualified for automotive applications?

A: Yes. The SRP2012TMA-R33M, DFE201612PD-R33M=P2, and DFE2MCAHR33MJ0L all carry AEC-Q200 qualification, indicating suitability for automotive-grade reliability requirements. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the difference in operating temperature ranges?

A: The SRP2012TMA-R33M operates from -55°C to 150°C. The DFE201612PD-R33M=P2 operates from -40°C to 125°C, restricting use in applications requiring temperatures below -40°C or above 125°C. The DFE2MCAHR33MJ0L operates from -40°C to 150°C, matching the upper temperature limit but not the lower extreme. Applications requiring operation below -40°C must use the SRP2012TMA-R33M.

Q: Do all parts have the same physical dimensions and package footprint?

A: Yes. All three parts are packaged in 0806 (2016 Metric) with identical dimensions: 0.079" L x 0.063" W (2.00mm x 1.60mm) and maximum seated height of 0.047" (1.20mm). PCB footprints and reflow profiles are interchangeable.

Q: What is the inductance tolerance specification?

A: All three parts specify ±20% inductance tolerance at 1 MHz test frequency. The nominal 330 nH value can range from 264 nH to 396 nH across the tolerance band. Circuit designs must account for this tolerance range in impedance and frequency response calculations.

Q: Are there any moisture sensitivity concerns?

A: All three parts carry Moisture Sensitivity Level (MSL) 1 classification, indicating unlimited shelf life without moisture control measures. Standard handling and storage practices are sufficient; no special desiccant packaging or baking procedures are required.