SCRH62B-330 Equivalent & Substitute Parts Reference

Part Overview

The SCRH62B-330 is a 33 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 840 mA continuous current with a maximum DC resistance of 450mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is RoHS3 compliant and operates across the industrial temperature range of -40°C to 125°C.

Substiute Parts

SCRH62B-330

Signal TransformerIn Stock: 779SCRH62B-330 Datasheet

Current PartRFQ

CDR6D28MNNP-330NC

Sumida America Components Inc.In Stock: 1152CDR6D28MNNP-330NC Datasheet

MFR RecommendedRFQ

VLCF5020T-330MR48

TDK CorporationIn Stock: 1839VLCF5020T-330MR48 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH62B-330 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 33 µH (exact match required)
• Inductance tolerance: ±20% or tighter
• Shielding: Shielded construction
• Mounting type: Surface Mount
• Test frequency: 100 kHz

Secondary Compatibility Criteria:

• Current rating: Must equal or exceed 840 mA
• DC resistance: Lower or equal to 450 mOhm preferred for thermal performance
• Operating temperature range: Must support -40°C minimum and 125°C maximum, or be suitable for the application's actual operating window
• RoHS3 compliance: Required for regulatory alignment
• MSL rating: 1 (Unlimited) preferred

The two qualified substitute parts meet these criteria with variations in saturation current, DC resistance, and maximum operating temperature that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

CDR6D28MNNP-330NC (Sumida America Components Inc.): This substitute offers the highest current rating at 940 mA with superior saturation current performance at 1.25 A. The DC resistance of 308.8 mOhm is significantly lower than the original part, resulting in reduced power dissipation. The part is active in production with RoHS3 compliance and unlimited MSL rating. The primary design consideration is the reduced maximum operating temperature of 105°C compared to the original 125°C specification. This part is suitable for applications where the thermal environment does not exceed 105°C.

VLCF5020T-330MR48 (TDK Corporation): This substitute maintains the original ±20% inductance tolerance and RoHS3 compliance. However, the current rating of 480 mA is significantly lower than the original 840 mA specification, and the saturation current matches this reduced rating at 480 mA. The DC resistance of 522 mOhm exceeds the original maximum by 72 mOhm. This part is suitable only for applications where the actual operating current does not exceed 480 mA. The smaller physical footprint (5.00mm x 5.00mm vs. 6.50mm x 6.40mm) may offer space advantages in constrained layouts.

Frequently Asked Questions (FAQ)

Q: Can CDR6D28MNNP-330NC be used in applications requiring operation at 125°C? A: No. The CDR6D28MNNP-330NC maximum operating temperature is 105°C. Applications requiring sustained operation at temperatures above 105°C must use a part with a higher temperature rating or implement thermal management to maintain component temperature below 105°C.

Q: Is VLCF5020T-330MR48 suitable for the full 840 mA current rating of the original part? A: No. The VLCF5020T-330MR48 has a maximum current rating of 480 mA. This part is suitable only for applications where the actual operating current does not exceed 480 mA. Using this part at currents above 480 mA will result in saturation and performance degradation.

Q: What is the impact of lower DC resistance in the CDR6D28MNNP-330NC? A: Lower DC resistance (308.8 mOhm vs. 450 mOhm) reduces resistive power loss in the inductor. For a given current, this results in lower heat generation and improved efficiency. This is a favorable characteristic for thermal performance.

Q: Are both substitute parts available in Tape & Reel packaging? A: Yes. Both CDR6D28MNNP-330NC and VLCF5020T-330MR48 are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: What is the significance of the inductance tolerance difference between the substitutes? A: The original SCRH62B-330 and VLCF5020T-330MR48 both specify ±20% tolerance, while CDR6D28MNNP-330NC specifies ±25%. In applications with tight inductance requirements, the ±20% tolerance parts provide better consistency. The ±25% tolerance of the Sumida part is still within acceptable range for most general-purpose filtering and energy storage applications.

Q: Can these parts be used interchangeably in existing PCB designs? A: Physical dimensions differ between parts. The VLCF5020T-330MR48 is smaller (5.00mm x 5.00mm x 2.00mm height) compared to the original (6.50mm x 6.40mm x 3.20mm height). PCB footprint compatibility must be verified before substitution. The CDR6D28MNNP-330NC has similar footprint dimensions to the original part.