PM74SH-470M-RC Equivalent & Substitute Parts

Part Overview

The PM74SH-470M-RC is a 47 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 950 mA current rating with 150 mOhm maximum DC resistance in a compact 7.00mm × 7.00mm footprint. The part is currently active in production and ROHS3 compliant, making it suitable for modern electronic assemblies requiring regulated inductance performance across industrial and commercial temperature ranges.

Equivalent and substitute parts are identified when design requirements permit tolerance in specific electrical parameters while maintaining core functional specifications such as inductance value, mounting type, package dimensions, and thermal operating range.

Substiute Parts

PM74SH-470M-RC

Bourns Inc.In Stock: 732PM74SH-470M-RC Datasheet

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SRR7045-470M

Bourns Inc.In Stock: 2117SRR7045-470M Datasheet

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P1167.473NLT

Pulse ElectronicsIn Stock: 11028P1167.473NLT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PM74SH-470M-RC are qualified based on the following critical parameters:

• Inductance Value: Must be 47 µH with ±20% tolerance
• Mounting Type: Surface mount configuration required
• Shielding: Shielded construction mandatory
• Package Footprint: 7.00mm × 7.00mm base dimensions with height ≤ 4.80mm
• Operating Temperature Range: Minimum -40°C to 125°C coverage
• RoHS Compliance: ROHS3 compliant status required

Substitutes are acceptable when current rating, saturation current, and DC resistance remain within acceptable design margins for the target application, provided all mandatory parameters are met.

Parameter Comparison

Engineering Selection Recommendations

SRR7045-470M (Bourns Inc.) qualifies as a direct substitute for PM74SH-470M-RC. Both components share identical inductance, tolerance, DC resistance specification, Q factor, self-resonant frequency, operating temperature range, and package footprint. The SRR7045-470M provides higher current rating (1.4 A vs. 950 mA) and saturation current (900 mA vs. 780 mA), offering improved headroom for current-limited applications. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating.

P1167.473NLT (Pulse Electronics) is a qualified substitute with the following considerations: inductance, tolerance, and shielding specifications are identical. The component operates across an extended temperature range (-40°C to 130°C vs. -40°C to 125°C). DC resistance is higher at 220 mOhm maximum compared to 150 mOhm, resulting in increased power dissipation. Package footprint is slightly larger (7.54mm × 7.54mm vs. 7.00mm × 7.00mm), though height is reduced (4.50 mm vs. 4.80 mm). Self-resonant frequency is 10 MHz versus 11 MHz. This part is suitable for applications where the larger footprint and higher DCR are acceptable trade-offs. ROHS3 compliance and unlimited MSL rating are maintained.

Both substitute parts are active products with current manufacturing status and full regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can SRR7045-470M replace PM74SH-470M-RC in all applications?

A: SRR7045-470M is electrically and mechanically compatible with PM74SH-470M-RC. Identical inductance, tolerance, DC resistance, and package footprint ensure direct substitution. The higher current rating provides additional design margin without introducing incompatibility.

Q: What are the limitations of using P1167.473NLT as a substitute?

A: P1167.473NLT introduces three parameter differences: DC resistance increases from 150 mOhm to 220 mOhm maximum, resulting in higher power dissipation; package footprint expands from 7.00mm × 7.00mm to 7.54mm × 7.54mm, requiring PCB layout verification; self-resonant frequency decreases from 11 MHz to 10 MHz. Applications sensitive to these parameters require evaluation before substitution.

Q: Are all three parts interchangeable on the same PCB?

A: PM74SH-470M-RC and SRR7045-470M share identical 7.00mm × 7.00mm footprints and are directly interchangeable. P1167.473NLT requires PCB layout modification due to its 7.54mm × 7.54mm footprint. Verify pad spacing and clearance before substitution.

Q: Do all substitute parts meet the same compliance requirements?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1). Regulatory compliance is equivalent across all options.

Q: Which substitute offers the best thermal performance?

A: P1167.473NLT operates to 130°C maximum versus 125°C for PM74SH-470M-RC and SRR7045-470M, providing 5°C additional thermal margin. However, higher DC resistance (220 mOhm) generates more heat under load, offsetting this advantage in current-limited designs.

Q: Can I use these parts interchangeably in high-frequency applications?

A: Self-resonant frequency differs between parts: PM74SH-470M-RC and SRR7045-470M both operate at 11 MHz, while P1167.473NLT operates at 10 MHz. Applications operating near or above these frequencies require frequency-specific part selection.