DRQ127-331-R Equivalent & Substitute Parts

Part Overview

The DRQ127-331-R is a shielded 2-coil inductor array manufactured by Eaton - Electronics Division. This surface mount component operates across the temperature range of -40°C to 125°C and is classified as Active product status. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this inductor array category. Alternatives become necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining functional compatibility.

Substiute Parts

DRQ127-331-R

Eaton - Electronics DivisionIn Stock: 1138DRQ127-331-R Datasheet

Current PartRFQ

SRF1280-331M

Bourns Inc.In Stock: 1520SRF1280-331M Datasheet

DirectRFQ

SRF1260-331M

Bourns Inc.In Stock: 1327SRF1260-331M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DRQ127-331-R are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Number of coils: 2
• Inductance tolerance: ±20%
• Shielding: Shielded construction
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 125°C
• Packaging: Tape & Reel (TR)
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Electrical Parameter Tolerance Bands:

• Inductance (parallel): 323.6 µH ±20% = 258.88 to 388.32 µH
• Inductance (series): 1.294 mH ±20% = 1.0352 to 1.5528 mH
• Current rating (parallel): 1.04 A minimum
• Current rating (series): 522 mA minimum
• DC resistance (parallel): ≤574 mOhm
• DC resistance (series): ≤2.3 Ohm

The substitute parts SRF1280-331M and SRF1260-331M from Bourns Inc. meet these criteria within the specified tolerance bands and maintain equivalent mechanical form factors.

Parameter Comparison

Engineering Selection Recommendations

DRQ127-331-R (Primary Part): Active product status with established supply chain. ROHS3 compliant and MSL 1 rated. Suitable for applications requiring the specified electrical characteristics with Eaton component qualification.

SRF1280-331M (Direct Substitute): Active product status. Electrical parameters align within tolerance specifications. Parallel inductance of 330 µH falls within the ±20% tolerance band of the primary part (258.88–388.32 µH). Series inductance of 1.32 mH is within tolerance. DC resistance values are equivalent or superior. Height matches at 8.00 mm. ROHS3 compliant with MSL 1 rating. Suitable for direct substitution in applications where Bourns qualification is acceptable.

SRF1260-331M (Alternative Substitute): Active product status. Electrical parameters meet tolerance requirements. Parallel inductance of 330 µH and series inductance of 1.32 mH are within specification bands. DC resistance values are equivalent. Height is reduced to 6.20 mm, which may provide design flexibility for space-constrained applications. Current saturation ratings are lower than the primary part. ROHS3 compliant with MSL 1 rating. Suitable for applications where reduced height is beneficial and lower saturation current is acceptable.

Frequently Asked Questions (FAQ)

Q: Can SRF1280-331M replace DRQ127-331-R in all applications?

A: SRF1280-331M meets the electrical and mechanical specifications within the defined tolerance bands. The parallel inductance of 330 µH is within the ±20% tolerance of 323.6 µH. Series inductance, current ratings, and DC resistance values are equivalent. Height matches at 8.00 mm. Substitution is valid where Bourns component qualification is acceptable.

Q: What is the difference between SRF1280-331M and SRF1260-331M?

A: Both parts have identical electrical specifications (330 µH parallel, 1.32 mH series inductance). The primary difference is physical height: SRF1280-331M is 8.00 mm, while SRF1260-331M is 6.20 mm. Additionally, SRF1260-331M has lower current saturation ratings (1.22 A parallel, 610 mA series) compared to SRF1280-331M (2.01 A parallel, 1.01 A series). Select based on height constraints and saturation current requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. DRQ127-331-R, SRF1280-331M, and SRF1260-331M are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Do the substitute parts have the same footprint?

A: Yes. All three parts share identical base dimensions of 12.50 mm × 12.50 mm. Height differs: DRQ127-331-R and SRF1280-331M are 8.00 mm; SRF1260-331M is 6.20 mm. Footprint compatibility is maintained across all parts.

Q: What tolerance band applies to inductance values?

A: All parts are specified with ±20% tolerance. For the DRQ127-331-R parallel inductance of 323.6 µH, the acceptable range is 258.88 to 388.32 µH. The substitute parts at 330 µH fall within this band.

Q: Are there packaging differences between these parts?

A: All three parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.