SCRH127-151 Equivalent & Substitute Parts

Part Overview

The SCRH127-151 is a 150 µH shielded surface mount inductor manufactured by Signal Transformer, designed for applications requiring fixed inductance with moderate current handling. This component is rated for 1.6 A continuous current with a maximum DC resistance of 280mOhm and operates across the industrial temperature range of -40°C to 125°C. The part is ROHS3 compliant and carries an unlimited moisture sensitivity level (MSL 1), making it suitable for standard PCB assembly processes. Equivalent parts are identified based on matching inductance value, current rating compatibility, DC resistance specification, shielding type, and surface mount package configuration.

Substiute Parts

SCRH127-151

Signal TransformerIn Stock: 891SCRH127-151 Datasheet

Current PartRFQ

CDRH127NP-151MC

Sumida America Components Inc.In Stock: 2102CDRH127NP-151MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH127-151 is determined by the following critical parameters:

• Inductance Value: 150 µH with ±20% tolerance
• Current Rating: Minimum 1.42 A (saturation current of main part); substitute must support continuous operation at or above this level
• DC Resistance: 280mOhm maximum specification
• Shielding Type: Shielded construction required
• Mounting Configuration: Surface mount, nonstandard package
• Physical Dimensions: Compatible footprint within 12.50mm x 12.50mm x 8.00mm envelope
• Operating Temperature: -40°C to 100°C minimum (main part operates to 125°C)
• Compliance: ROHS3 compliant; MSL 1 rating

The CDRH127NP-151MC from Sumida America Components Inc. meets these substitution criteria with matching inductance, equivalent DC resistance, shielded construction, and compatible surface mount package. The substitute part operates within a slightly narrower temperature range (-40°C to 100°C) and has a marginally smaller footprint (12.00mm x 12.00mm), both acceptable for most applications using the original part.

Parameter Comparison

Engineering Selection Recommendations

The CDRH127NP-151MC qualifies as a direct substitute for the SCRH127-151 based on electrical and mechanical parameter alignment. Both components are ROHS3 compliant and carry MSL 1 ratings, ensuring compatibility with standard surface mount assembly processes. The substitute part maintains the same inductance specification, DC resistance limit, and shielded construction. The 1.42 A current rating of the substitute is acceptable for applications where the main part's 1.6 A rating is not a hard requirement. The operating temperature range of the substitute (-40°C to 100°C) is suitable for applications not requiring operation above 100°C. Physical footprint compatibility is confirmed, with the substitute's 12.00mm x 12.00mm dimension fitting within the space allocated for the original 12.50mm x 12.50mm part. Component selection should be based on application current requirements, maximum operating temperature, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the CDRH127NP-151MC replace the SCRH127-151 in all applications?

A: The CDRH127NP-151MC is electrically and mechanically compatible for applications operating at or below 100°C. If your application requires operation above 100°C, the original SCRH127-151 is required. For applications with continuous current demands exceeding 1.42 A, verify that the substitute's current rating meets your design specifications.

Q: What is the significance of the current rating difference (1.6 A vs. 1.42 A)?

A: The SCRH127-151 has a continuous current rating of 1.6 A with a saturation current of 1.42 A. The CDRH127NP-151MC has a current rating of 1.42 A. For applications operating below 1.42 A, both parts are functionally equivalent. For applications requiring sustained operation between 1.42 A and 1.6 A, the original part is recommended.

Q: Are the physical dimensions compatible for PCB layout?

A: Yes. The CDRH127NP-151MC measures 12.00mm x 12.00mm, which is smaller than the original 12.50mm x 12.50mm footprint. Both parts have the same 8.00mm seated height. The substitute will fit within the space allocated for the original component.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SCRH127-151 and CDRH127NP-151MC are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings. Both are suitable for standard reflow soldering processes without additional moisture bake-out requirements.

Q: What is the inductance tolerance, and does it affect substitution?

A: Both parts carry ±20% inductance tolerance at 1 kHz test frequency. This tolerance is identical between the main part and substitute, ensuring equivalent circuit performance within the specified tolerance band.

Q: Can I use the CDRH127NP-151MC in high-temperature applications?

A: The CDRH127NP-151MC operates from -40°C to 100°C. If your application requires operation above 100°C, the SCRH127-151 (-40°C to 125°C) is the appropriate choice.