DRQ74-1R0-R Equivalent & Substitute Parts

Part Overview

The DRQ74-1R0-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 designed for applications requiring dual-coil inductive functionality with selectable series or parallel connection configurations. The part is Active in product status and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for the intended application.

Substiute Parts

DRQ74-1R0-R

Eaton - Electronics DivisionIn Stock: 2269DRQ74-1R0-R Datasheet

Current PartRFQ

SRF0703-1R0M

Bourns Inc.In Stock: 4112SRF0703-1R0M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DRQ74-1R0-R with the SRF0703-1R0M is determined by the following criteria:

Electrical Compatibility Parameters:

• Both components feature 2-coil shielded inductor array architecture
• Inductance values in parallel configuration (952 nH vs. 1 µH) fall within the ±20% tolerance specification
• Inductance values in series configuration (3.808 µH vs. 4 µH) fall within the ±20% tolerance specification
• Current ratings in both configurations remain within acceptable operating margins
• DC resistance values are comparable and within functional tolerance

Mechanical Compatibility Parameters:

• Identical footprint dimensions: 7.60 mm × 7.60 mm
• Both components are surface mount with nonstandard package designation
• Height differential (4.45 mm vs. 3.60 mm) is within typical PCB assembly clearance tolerances

Environmental & Compliance Parameters:

• Identical operating temperature range: -40°C to 125°C
• Both components are RoHS3 compliant
• Both components have MSL rating of 1 (Unlimited)
• Both components carry EAR99 ECCN classification

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The DRQ74-1R0-R remains the preferred component when original specifications are required. Both the DRQ74-1R0-R and SRF0703-1R0M are Active products with full RoHS3 compliance and identical environmental ratings.

Substitution Applicability:

The SRF0703-1R0M is suitable as a substitute when the following conditions are met:

1. Application tolerance for inductance variation of ±5% is acceptable within circuit design margins
2. Increased DC resistance (35% higher in parallel, 80% higher in series configuration) does not exceed thermal or efficiency requirements
3. Reduced saturation current ratings (approximately 22% lower) are compatible with circuit operating conditions
4. Reduced component height (0.85 mm lower) is compatible with PCB assembly constraints

Compliance Status:

Both components maintain identical regulatory compliance: RoHS3 certification, MSL Level 1, and EAR99 ECCN classification. Both are suitable for applications requiring unrestricted moisture handling.

Frequently Asked Questions (FAQ)

Q: Can the SRF0703-1R0M be used as a direct replacement for the DRQ74-1R0-R?

A: The SRF0703-1R0M is mechanically compatible (identical footprint) and electrically compatible within the ±20% tolerance specification. However, the increased DC resistance and reduced saturation current must be evaluated against specific circuit requirements. Inductance values differ by +5%, which falls within tolerance but should be verified for frequency-dependent applications.

Q: What is the primary difference in DC resistance between these components?

A: The DRQ74-1R0-R has 10 mOhm parallel DCR and 40 mOhm series DCR. The SRF0703-1R0M has 13.5 mOhm maximum parallel DCR and 72 mOhm maximum series DCR. The SRF0703-1R0M exhibits higher resistance, which increases power dissipation and heat generation in high-current applications.

Q: Are there height clearance considerations?

A: Yes. The DRQ74-1R0-R has a height of 4.45 mm, while the SRF0703-1R0M is 3.60 mm tall. The substitute component is 0.85 mm shorter, which may provide additional PCB assembly clearance but does not create compatibility issues.

Q: Do both components have identical temperature ratings?

A: Yes. Both the DRQ74-1R0-R and SRF0703-1R0M operate across -40°C to 125°C and are suitable for identical thermal environments.

Q: What is the saturation current difference?

A: The DRQ74-1R0-R has saturation currents of 10.2 A (parallel) and 5.1 A (series). The SRF0703-1R0M has saturation currents of 7.97 A (parallel) and 3.99 A (series). The substitute component saturates at approximately 22% lower current levels, which must be considered in high-current circuit designs.

Q: Are both components RoHS compliant?

A: Yes. Both the DRQ74-1R0-R and SRF0703-1R0M are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Can these components be used interchangeably in all applications?

A: No. While mechanically and environmentally compatible, the electrical parameter differences (inductance tolerance, DC resistance, and saturation current) require circuit-level evaluation. Applications with tight inductance specifications, high current requirements, or strict thermal budgets must verify compatibility before substitution.