SCRH127B-220 Equivalent & Substitute Parts

Part Overview

The SCRH127B-220 is a 22 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring 4 A current rating with 43.2mOhm maximum DC resistance. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current class.

Substiute Parts

SCRH127B-220

Signal TransformerIn Stock: 785SCRH127B-220 Datasheet

Current PartRFQ

B82477G4223M000

EPCOS - TDK ElectronicsIn Stock: 1889B82477G4223M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH127B-220 is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with ±20% tolerance
• Current Rating: Minimum 4 A continuous current capability
• DC Resistance: Maximum 43.2mOhm to maintain equivalent power dissipation characteristics
• Shielding: Must be shielded construction
• Mounting Type: Surface mount configuration required
• Operating Temperature: Must support -40°C to 125°C range
• Compliance: RoHS3 compliant status required

The B82477G4223M000 from EPCOS - TDK Electronics meets these substitution criteria with equivalent inductance, shielding, mounting type, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The B82477G4223M000 qualifies as a substitute for the SCRH127B-220 based on matching inductance value, tolerance, shielding configuration, surface mount packaging, and RoHS3 compliance status. Both components maintain unlimited moisture sensitivity rating and operate within overlapping temperature ranges.

The substitute part exhibits lower DC resistance (38mOhm versus 43.2mOhm maximum), which provides improved efficiency characteristics. The substitute part's current saturation rating of 4.25 A exceeds the main part specification, supporting higher transient current capability.

The primary consideration is the substitute part's continuous current rating of 3.6 A, which is lower than the main part's 4 A rating. Circuit design must confirm that actual operating current does not exceed 3.6 A continuous to maintain thermal and reliability margins with the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the B82477G4223M000 be used in place of SCRH127B-220 in all applications?

A: The B82477G4223M000 is electrically compatible when circuit operating current remains at or below 3.6 A continuous. Applications requiring sustained 4 A operation must use the original SCRH127B-220 or verify that peak current demands do not exceed the substitute part's saturation current of 4.25 A.

Q: What are the physical dimension differences between these parts?

A: Both components use nonstandard package configurations. The SCRH127B-220 measures 12.50mm × 12.50mm × 8.00mm (height seated maximum). The B82477G4223M000 measures 12.30mm × 12.30mm × 6.00mm (height seated maximum). The substitute part is slightly smaller in footprint and height, which may provide layout advantages in space-constrained designs.

Q: Are there compliance or certification differences?

A: Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both components.

Q: How do the DC resistance specifications affect circuit performance?

A: The substitute part's 38mOhm maximum DCR is lower than the main part's 43.2mOhm maximum, resulting in reduced power dissipation and improved efficiency. This represents a performance advantage in power-sensitive applications.

Q: What is the temperature operating range difference?

A: The SCRH127B-220 operates from -40°C to 125°C. The B82477G4223M000 extends the lower temperature limit to -55°C, providing enhanced performance in cold environment applications while maintaining the same upper temperature limit.