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DRQ74-8R2-R Equivalent & Substitute Parts
Part Overview
The DRQ74-8R2-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 device provides dual inductance configurations: 8.566 µH in parallel connection and 34.26 µH in series connection, with a parallel current rating of 2.53 A and series current rating of 1.27 A. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor array category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Eaton - Electronics Division | — |
| Part Number | DRQ74-8R2-R | — |
| Series | DRQ | — |
| Number of Coils | 2 | — |
| Inductance - Parallel | 8.566 | µH |
| Inductance - Series | 34.26 | µH |
| Tolerance | ±20% | — |
| Current Rating - Parallel | 2.53 | A |
| Current Rating - Series | 1.27 | A |
| DC Resistance (DCR) - Parallel | 44.1 | mOhm |
| DC Resistance (DCR) - Series | 177 | mOhm |
| Shielding | Shielded | — |
| Operating Temperature Range | -40 to 125 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | Nonstandard | — |
| Size / Dimension | 0.299" L x 0.299" W (7.60mm x 7.60mm) | — |
| Height | 0.175" (4.45mm) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
| Product Status | Active | — |
Substitute Part Grouping Explanation
Substitution of the DRQ74-8R2-R with the SRF0703-8R2M is based on the following electrical and mechanical compatibility criteria:
Electrical Parameters:
- Both components are 2-coil shielded inductor arrays with parallel inductance values within the ±20% tolerance band (DRQ74-8R2-R: 8.566 µH; SRF0703-8R2M: 8.2 µH)
- Series inductance values are equivalent within tolerance (DRQ74-8R2-R: 34.26 µH; SRF0703-8R2M: 32.8 µH)
- Current ratings in parallel configuration are comparable (DRQ74-8R2-R: 2.53 A; SRF0703-8R2M: 2.19 A)
- Operating temperature range is identical (-40°C to 125°C)
Mechanical Parameters:
- Both components use surface mount technology
- Footprint dimensions are identical: 0.299" L x 0.299" W (7.60mm x 7.60mm)
- Both are supplied in Tape & Reel packaging
- Both feature shielded construction
Compliance Parameters:
- Both components are ROHS3 Compliant
- Both have MSL rating of 1 (Unlimited)
- Both are classified as Active product status
Parameter Comparison
| Parameter | DRQ74-8R2-R (Eaton) | SRF0703-8R2M (Bourns) | Compatibility |
|---|---|---|---|
| Number of Coils | 2 | 2 | Match |
| Inductance - Parallel (µH) | 8.566 | 8.2 | Within ±20% tolerance |
| Inductance - Series (µH) | 34.26 | 32.8 | Within ±20% tolerance |
| Tolerance | ±20% | ±20% | Match |
| Current Rating - Parallel (A) | 2.53 | 2.19 | SRF0703-8R2M rated lower |
| Current Rating - Series (A) | 1.27 | 1.1 | SRF0703-8R2M rated lower |
| Current Saturation - Parallel (A) | 3.4 | 2.66 | SRF0703-8R2M rated lower |
| Current Saturation - Series (A) | 1.7 | 1.33 | SRF0703-8R2M rated lower |
| DC Resistance (DCR) - Parallel (mOhm) | 44.1 | 77.2 Max | SRF0703-8R2M higher |
| DC Resistance (DCR) - Series (mOhm) | 177 | 306 Max | SRF0703-8R2M higher |
| Shielding | Shielded | Shielded | Match |
| Operating Temperature Range (°C) | -40 to 125 | -40 to 125 | Match |
| Mounting Type | Surface Mount | Surface Mount | Match |
| Size / Dimension (mm) | 7.60 x 7.60 | 7.60 x 7.60 | Match |
| Height (mm) | 4.45 | 3.60 | SRF0703-8R2M lower profile |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Match |
| Product Status | Active | Active | Match |
Engineering Selection Recommendations
Primary Selection (DRQ74-8R2-R): The DRQ74-8R2-R remains the primary component choice when the application requires the specified current ratings and saturation characteristics. This part is Active status with full ROHS3 compliance and unlimited moisture sensitivity rating.
Substitute Selection (SRF0703-8R2M): The SRF0703-8R2M from Bourns Inc. is a qualified substitute when the following conditions are met:
- The application current requirements do not exceed 2.19 A in parallel configuration or 1.1 A in series configuration
- The application current saturation limits do not exceed 2.66 A in parallel configuration or 1.33 A in series configuration
- The increased DC resistance values (77.2 mOhm parallel, 306 mOhm series maximum) are acceptable for the circuit design
- The lower profile height (3.60mm versus 4.45mm) is compatible with PCB assembly constraints
Both components are Active status products with ROHS3 compliance and MSL rating of 1. Both maintain identical operating temperature ranges and footprint dimensions. The SRF0703-8R2M offers a lower profile option with equivalent inductance values within tolerance specifications.
Frequently Asked Questions (FAQ)
Q: What are the primary differences between DRQ74-8R2-R and SRF0703-8R2M?
A: The primary differences are current ratings, saturation characteristics, and DC resistance values. The DRQ74-8R2-R provides higher current capacity (2.53 A parallel vs. 2.19 A) and lower DC resistance (44.1 mOhm parallel vs. 77.2 mOhm maximum). The SRF0703-8R2M offers a lower profile height (3.60mm vs. 4.45mm).
Q: Are the inductance values equivalent between these parts?
A: Yes. The parallel inductance values are 8.566 µH (DRQ74-8R2-R) and 8.2 µH (SRF0703-8R2M), which fall within the ±20% tolerance specification. Series inductance values are 34.26 µH and 32.8 µH respectively, also within tolerance.
Q: Can SRF0703-8R2M be used in all applications where DRQ74-8R2-R is specified?
A: No. The SRF0703-8R2M has lower current ratings and saturation limits. Substitution is only valid when circuit current requirements do not exceed the SRF0703-8R2M specifications and when the higher DC resistance is acceptable.
Q: Do both parts have identical footprints?
A: Yes. Both components have identical footprint dimensions of 7.60mm x 7.60mm (0.299" x 0.299"). The SRF0703-8R2M has a lower height of 3.60mm compared to 4.45mm for the DRQ74-8R2-R.
Q: Are both parts RoHS compliant?
A: Yes. Both DRQ74-8R2-R and SRF0703-8R2M are ROHS3 Compliant with MSL rating of 1 (Unlimited).
Q: What is the operating temperature range for both parts?
A: Both components operate across the identical temperature range of -40°C to 125°C.
Q: How do the DC resistance values compare?
A: The DRQ74-8R2-R has lower DC resistance: 44.1 mOhm (parallel) and 177 mOhm (series). The SRF0703-8R2M has maximum DC resistance values of 77.2 mOhm (parallel) and 306 mOhm (series). Higher DC resistance results in increased power dissipation.
Q: Are both parts available in Tape & Reel packaging?
A: Yes. Both components are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.
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