DRA125-151-R Equivalent & Substitute Parts

Part Overview

The DRA125-151-R is a 150 µH shielded wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.409 A continuous current with a DC resistance of 273 mOhm and operates across the temperature range of -40°C to 165°C. The part carries AEC-Q200 qualification and ROHS3 compliance, making it suitable for automotive and industrial applications requiring high reliability. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

DRA125-151-R

Eaton - Electronics DivisionIn Stock: 1247DRA125-151-R Datasheet

Current PartRFQ

SRR1260A-151K

Bourns Inc.In Stock: 1613SRR1260A-151K Datasheet

DirectRFQ

B82477G4154M000

EPCOS - TDK ElectronicsIn Stock: 2080B82477G4154M000 Datasheet

SimilarRFQ

CDRH125L125NP-151MC

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DRA125-151-R is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 150 µH (fixed requirement)
• Inductance tolerance: ±20% or tighter
• Current rating: minimum 1.409 A
• Saturation current: minimum 1.785 A
• DC resistance: 273 mOhm or lower
• Shielding: Shielded construction required
• Mounting type: Surface Mount
• Package footprint: 12.50 x 12.50 mm nominal
• Operating temperature: minimum -40°C to 125°C overlap
• Compliance: ROHS3 and AEC-Q200 preferred

Substitute Parts Identified:

1. SRR1260A-151K (Bourns Inc.) — Direct equivalent with improved current rating and lower DCR
2. B82477G4154M000 (EPCOS - TDK Electronics) — Similar performance with extended low-temperature rating
3. CDRH125L125NP-151MC (Sumida America Components Inc.) — Comparable specifications with ferrite core construction

Parameter Comparison

Engineering Selection Recommendations

SRR1260A-151K (Bourns Inc.) is the primary direct equivalent. This part meets or exceeds all electrical parameters of the DRA125-151-R, including higher current rating (1.55 A vs. 1.409 A) and lower DC resistance (260 mOhm vs. 273 mOhm). Both parts carry AEC-Q200 qualification and ROHS3 compliance. The SRR1260A-151K features tighter inductance tolerance (±10% vs. ±20%), which provides improved circuit performance consistency. Height difference of 0.50 mm (6.50 mm vs. 6.00 mm) must be verified against PCB clearance constraints.

B82477G4154M000 (EPCOS - TDK Electronics) provides an alternative with superior low-temperature performance (-55°C minimum vs. -40°C). DC resistance is lower at 225 mOhm maximum. However, this part does not carry AEC-Q200 certification. Package dimensions are slightly smaller (12.30 x 12.30 mm), which may require PCB layout verification. Saturation current of 1.7 A meets the requirement.

CDRH125L125NP-151MC (Sumida America Components Inc.) is a compatible substitute with specifications closely aligned to the DRA125-151-R. Current rating of 1.4 A and DC resistance of 271 mOhm are within acceptable margins. AEC-Q200 qualification is present. Package size is the smallest (12.00 x 12.00 mm), requiring footprint verification. Saturation current of 1.36 A is below the DRA125-151-R specification and must be evaluated for circuit margin requirements.

Selection should prioritize applications where operating temperature does not exceed 125°C, as all substitutes have this upper limit compared to the DRA125-151-R's 165°C rating.

Frequently Asked Questions (FAQ)

Q: Can SRR1260A-151K replace DRA125-151-R in all applications?

A: SRR1260A-151K is electrically compatible for applications operating at or below 125°C. The 0.50 mm height difference requires PCB clearance verification. Tighter inductance tolerance (±10%) provides improved performance consistency.

Q: What is the primary limitation of B82477G4154M000?

A: B82477G4154M000 lacks AEC-Q200 certification, which may restrict use in automotive applications requiring this qualification. Operating temperature upper limit is 125°C. Package dimensions are slightly smaller and require footprint validation.

Q: Is CDRH125L125NP-151MC suitable for high-current applications?

A: CDRH125L125NP-151MC has a saturation current of 1.36 A, which is lower than the DRA125-151-R (1.785 A). Applications requiring saturation margin above 1.36 A must use alternative substitutes or the original part.

Q: How do package size differences affect PCB design?

A: All substitute parts have nominal footprints within 0.50 mm of the DRA125-151-R (12.50 x 12.50 mm). Height variations range from 6.00 mm to 6.50 mm. PCB layout must accommodate these dimensional tolerances, particularly for clearance to adjacent components and solder reflow profiles.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. DRA125-151-R, SRR1260A-151K, B82477G4154M000, and CDRH125L125NP-151MC are all ROHS3 compliant.

Q: What is the inductance tolerance impact on circuit performance?

A: DRA125-151-R and B82477G4154M000 have ±20% tolerance. SRR1260A-151K has ±10% tolerance, providing tighter inductance control. CDRH125L125NP-151MC has ±20% tolerance. Circuit designs with tight frequency or impedance requirements benefit from the ±10% tolerance of SRR1260A-151K.

Q: Can these parts be used interchangeably on existing PCBs?

A: Mechanical compatibility requires verification of package footprint and height clearance. Electrical compatibility is confirmed for all listed substitutes within their specified operating temperature ranges. Thermal and saturation current margins must be evaluated for each application.