Equivalent & Substitute Parts for DRA127-151-R

Part Overview

The DRA127-151-R is a 150 µH shielded wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.524 A continuous current with a saturation current of 2.83 A and operates across the temperature range of -40°C to 165°C. The part carries AEC-Q200 automotive qualification and is RoHS3 compliant. The DRA127-151-R is currently in active production status with 1800 units available in inventory.

Substitute components become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings. The substitute parts listed maintain the core electrical specifications of 150 µH inductance at 100 kHz test frequency while operating within compatible current and temperature parameters.

Substiute Parts

DRA127-151-R

Eaton - Electronics DivisionIn Stock: 1865DRA127-151-R Datasheet

Current PartRFQ

B82477P4154M000

EPCOS - TDK ElectronicsIn Stock: 770B82477P4154M000 Datasheet

DirectRFQ

SRR1280A-151K

Bourns Inc.In Stock: 3330SRR1280A-151K Datasheet

DirectRFQ

CDRH125L125NP-151MC

Sumida America Components Inc.In Stock: 2187CDRH125L125NP-151MC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following criteria derived from the provided specifications:

Primary Electrical Compatibility Requirements:

• Inductance value: 150 µH (fixed specification)
• Current rating: Equal to or greater than 1.524 A
• DC resistance: Comparable to 269 mOhm (within manufacturing tolerance ranges)
• Saturation current: Equal to or greater than 2.83 A
• Shielding: Shielded construction required

Environmental & Mechanical Compatibility:

• Operating temperature range: Must encompass or overlap with -40°C to 165°C
• Mounting type: Surface mount only
• Package footprint: 12.50 x 12.50 mm nominal (minor height variations acceptable within assembly constraints)
• Inductance test frequency: 100 kHz or 1 kHz (both acceptable for 150 µH specification)

Compliance & Certification:

• AEC-Q200 automotive qualification required
• RoHS3 compliance required
• Moisture sensitivity level: 1 (Unlimited) preferred

The three substitute parts listed below meet these criteria with the following qualifications noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

B82477P4154M000 (EPCOS - TDK Electronics)

This part qualifies as a direct substitute based on matching inductance, shielding, mounting type, and footprint dimensions. The DC resistance of 185 mOhm maximum is lower than the main part, resulting in reduced power dissipation. However, the saturation current of 1.7 A is below the main part's 2.83 A specification. The operating temperature upper limit of 150°C is 15°C lower than the DRA127-151-R. This part is suitable for applications where saturation current margin is not critical and operating temperatures remain below 150°C. AEC-Q200 and RoHS3 compliance are confirmed.

SRR1280A-151K (Bourns Inc.)

This part provides the highest current rating at 1.85 A and maintains the same 8.00 mm seated height as the main part. The inductance tolerance is tighter at ±10% compared to ±20%. The saturation current of 1.9 A remains below the main part's 2.83 A specification. The operating temperature range of -40°C to 125°C is narrower than the main part. This part is suitable for applications requiring tighter inductance tolerance and higher continuous current capacity within the reduced temperature range. AEC-Q200 and RoHS3 compliance are confirmed.

CDRH125L125NP-151MC (Sumida America Components Inc.)

This part has a slightly smaller footprint of 12.00 x 12.00 mm and the lowest seated height of 6.00 mm, offering space advantages in compact designs. The current rating of 1.4 A is below the main part's 1.524 A specification, and the saturation current of 1.36 A is significantly lower. The operating temperature range of -40°C to 125°C is narrower. This part is suitable only for applications with lower current requirements and where the reduced package height provides design benefit. AEC-Q200 and RoHS3 compliance are confirmed.

Frequently Asked Questions (FAQ)

Q: Can I use B82477P4154M000 in place of DRA127-151-R in all applications?

A: B82477P4154M000 is electrically compatible for applications where the saturation current margin of 1.7 A is sufficient and operating temperatures do not exceed 150°C. The lower DC resistance (185 mOhm vs. 269 mOhm) reduces power dissipation. Verify that your circuit design does not require the full 2.83 A saturation current margin of the original part.

Q: What is the primary limitation of CDRH125L125NP-151MC?

A: The current rating of 1.4 A is below the DRA127-151-R specification of 1.524 A. This part is not suitable for applications requiring the full rated current of the main part. The saturation current of 1.36 A provides minimal margin above the rated current. Use this part only in designs with lower current requirements.

Q: Are all substitute parts automotive qualified?

A: Yes. All three substitute parts carry AEC-Q200 certification, confirming automotive-grade reliability and qualification testing. All parts are also RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Does the footprint difference of CDRH125L125NP-151MC affect PCB compatibility?

A: The CDRH125L125NP-151MC footprint is 12.00 x 12.00 mm compared to 12.50 x 12.50 mm for the main part. This smaller footprint is physically compatible with pads designed for the larger 12.50 x 12.50 mm size. The seated height of 6.00 mm is significantly lower, which may require clearance verification in your assembly. Confirm pad layout compatibility before implementation.

Q: Which substitute part has the best temperature range coverage?

A: The DRA127-151-R main part has the widest operating temperature range at -40°C to 165°C. All three substitute parts have narrower ranges: B82477P4154M000 extends to 150°C, while SRR1280A-151K and CDRH125L125NP-151MC both limit to 125°C. For applications requiring operation above 125°C, only B82477P4154M000 provides extended temperature capability, though still below the main part's 165°C maximum.

Q: What is the significance of inductance tolerance differences?

A: The main part and B82477P4154M000 and CDRH125L125NP-151MC specify ±20% tolerance, while SRR1280A-151K specifies ±10%. Tighter tolerance (±10%) provides more predictable inductance values across the production range. For applications sensitive to inductance variation, SRR1280A-151K offers superior consistency. For general applications, ±20% tolerance is typically acceptable.

Q: Can I use SRR1280A-151K for high-current applications?

A: SRR1280A-151K has a current rating of 1.85 A, which exceeds the main part's 1.524 A. However, the saturation current of 1.9 A provides only 0.05 A margin above rated current, compared to 1.31 A margin in the main part. For applications requiring sustained high current with saturation margin, the main part DRA127-151-R remains preferable. SRR1280A-151K is suitable for applications where the higher continuous current rating is needed but saturation margin is not critical.