SCRH127-150 Equivalent & Substitute Parts

Part Overview

The SCRH127-150 is a 15 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 4.85 A continuous current with a maximum DC resistance of 27 mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts become necessary when the primary component reaches end-of-life status, inventory constraints occur, or when design requirements permit operation within the electrical and mechanical tolerances of alternative qualified inductors.

Substiute Parts

SCRH127-150

Signal TransformerIn Stock: 846SCRH127-150 Datasheet

Current PartRFQ

SLF12565T-150M4R2-PF

TDK CorporationIn Stock: 6438SLF12565T-150M4R2-PF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH127-150 is determined by the following critical parameters:

Electrical Parameters:

• Inductance value: 15 µH ±20%
• Current rating: minimum 4.85 A continuous
• Saturation current (Isat): minimum 4.5 A
• DC resistance: maximum 27 mOhm

Mechanical Parameters:

• Shielding: Shielded construction required
• Mounting type: Surface Mount
• Package footprint: 12.50mm x 12.50mm (0.492" x 0.492")
• Height constraint: maximum 0.315" (8.00mm) seated height

Compliance Parameters:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited)

The substitute part SLF12565T-150M4R2-PF from TDK Corporation meets the electrical and mechanical substitution criteria within the specified parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

The SLF12565T-150M4R2-PF is electrically and mechanically compatible with the SCRH127-150 within the specified parameter tolerances. Both components share identical inductance values, tolerance ratings, footprint dimensions, and compliance certifications.

The substitute part exhibits a reduced current rating (4.4 A versus 4.85 A) and lower saturation current (4.2 A versus 4.5 A). Applications operating at or near the maximum current specification of the SCRH127-150 require verification that the reduced current capability of the substitute part remains within circuit operating margins.

The SLF12565T-150M4R2-PF carries a "Not For New Designs" product status designation. This classification indicates the component is available for existing production and legacy system support but is not recommended for new product development initiatives.

The operating temperature range of the substitute part (-20°C ~ 105°C) is narrower than the primary component (-40°C ~ 125°C). Applications requiring operation below -20°C or above 105°C are not suitable for this substitute.

Frequently Asked Questions (FAQ)

Q: Can the SLF12565T-150M4R2-PF be used as a direct replacement for the SCRH127-150?

A: The SLF12565T-150M4R2-PF is mechanically compatible and electrically equivalent within the specified parameter tolerances. Substitution is valid when circuit current requirements do not exceed 4.4 A continuous and operating temperature remains within -20°C to 105°C.

Q: What are the critical differences between these two inductors?

A: The primary differences are current rating (4.85 A versus 4.4 A), saturation current (4.5 A versus 4.2 A), DC resistance (27 mOhm versus 28.4 mOhm), operating temperature range (-40°C ~ 125°C versus -20°C ~ 105°C), and product status (Active versus Not For New Designs).

Q: Are the footprints identical?

A: Yes. Both components share the same footprint dimensions of 12.50mm x 12.50mm (0.492" x 0.492"). The seated height of the substitute part is 6.85mm, which is lower than the primary component at 8.00mm, ensuring compatibility with existing PCB layouts.

Q: Do both parts meet RoHS3 compliance?

A: Yes. Both the SCRH127-150 and SLF12565T-150M4R2-PF are RoHS3 compliant with MSL rating of 1 (Unlimited).

Q: What does "Not For New Designs" mean for the substitute part?

A: This designation indicates the SLF12565T-150M4R2-PF is available for production support and legacy system applications but is not recommended for incorporation into new product designs. Existing designs currently using this component may continue production, but new designs should prioritize components with Active product status.