PM74SH-100M-RC Equivalent & Substitute Parts

Part Overview

The PM74SH-100M-RC is a 10 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 2 A continuous current with a maximum DC resistance of 42 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 1118 units available in stock.

Substitute parts are identified when design requirements allow for variations in current rating, DC resistance, or packaging format while maintaining the core electrical specifications of 10 µH inductance at ±20% tolerance and shielded construction.

Substiute Parts

PM74SH-100M-RC

Bourns Inc.In Stock: 1227PM74SH-100M-RC Datasheet

Current PartRFQ

SRR7045-100M

Bourns Inc.In Stock: 7707SRR7045-100M Datasheet

SimilarRFQ

P1167.103NLT

Pulse ElectronicsIn Stock: 8369P1167.103NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM74SH-100M-RC is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 10 µH
• Inductance tolerance: ±20%
• Shielding requirement: Shielded construction
• Mounting type: Surface Mount
• Operating temperature range: Minimum -40°C to 125°C coverage
• RoHS compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Current rating: May exceed 2 A (higher current capability is acceptable)
• DC resistance: Up to 50 mOhm maximum (slight increase acceptable within design margin)
• Packaging format: Tape & Reel or Cut Tape acceptable for equivalent functionality
• Physical dimensions: Minor variations acceptable if footprint compatibility maintained

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

SRR7045-100M (Bourns Inc.): This substitute maintains identical DC resistance (42 mOhm Max) and physical dimensions (7.00 mm x 7.00 mm) to the PM74SH-100M-RC while providing increased current rating (2.7 A) and saturation current (1.9 A). Both parts are manufactured by Bourns Inc., share the same inductance and tolerance specifications, and carry equivalent ROHS3 compliance and REACH status. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). This substitute is suitable for applications where higher current headroom is beneficial or where packaging flexibility is required.

P1167.103NLT (Pulse Electronics): This substitute maintains the 2 A current rating and ±20% inductance tolerance while offering a higher operating temperature ceiling (130°C versus 125°C) and improved saturation current (2.1 A). The DC resistance is specified at 50 mOhm Max, representing a 19% increase over the main part. Physical dimensions are slightly larger (7.54 mm x 7.54 mm) with a lower seated height (4.50 mm). This substitute is suitable for applications where the increased temperature range is required or where the slightly higher DC resistance is acceptable within circuit design margins.

Both substitutes maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can SRR7045-100M be used as a direct replacement for PM74SH-100M-RC?

A: SRR7045-100M is functionally equivalent for applications requiring 10 µH inductance at 2 A or less. Both parts share identical inductance, tolerance, DC resistance, and physical footprint. The primary consideration is packaging format: SRR7045-100M is supplied in Cut Tape & Digi-Reel® format, while PM74SH-100M-RC is supplied in Tape & Reel format. Verify your assembly equipment compatibility with the packaging format before selection.

Q: What is the difference in DC resistance between PM74SH-100M-RC and P1167.103NLT?

A: PM74SH-100M-RC specifies 42 mOhm Max DC resistance, while P1167.103NLT specifies 50 mOhm Max. This 8 mOhm difference represents approximately 19% higher resistance in the substitute part. For applications sensitive to resistive losses or thermal dissipation, this difference must be evaluated against circuit requirements. The higher saturation current (2.1 A) of P1167.103NLT may offset this consideration in current-limited applications.

Q: Are there physical footprint compatibility concerns with P1167.103NLT?

A: P1167.103NLT has a slightly larger footprint (7.54 mm x 7.54 mm) compared to PM74SH-100M-RC (7.00 mm x 7.00 mm), representing a 0.54 mm increase in both length and width. However, the seated height is lower (4.50 mm versus 4.80 mm). PCB layout must accommodate the larger lateral dimensions. Verify available board space before selection.

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

A: Yes. PM74SH-100M-RC, SRR7045-100M, and P1167.103NLT are all ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All three parts are suitable for applications with equivalent regulatory and environmental requirements.

Q: Which substitute should be selected for maximum current headroom?

A: SRR7045-100M provides the highest current rating at 2.7 A with saturation current of 1.9 A. P1167.103NLT offers saturation current of 2.1 A but maintains the 2 A continuous rating. Selection depends on whether continuous current capacity or saturation margin is the primary design constraint.