ISC1210BN4R7K Equivalent & Substitute Parts

Part Overview

The ISC1210BN4R7K is a 4.7 µH shielded drum core wirewound inductor manufactured by Vishay Dale, rated for 220 mA continuous current with a maximum DC resistance of 1.25Ohm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as Active product status. Substitute parts are necessary when the original component becomes unavailable, when packaging requirements differ, or when compliance certifications are required for specific applications.

Substiute Parts

ISC1210BN4R7K

Vishay DaleIn Stock: 1086ISC1210BN4R7K Datasheet

Current PartRFQ

74476404

Würth ElektronikIn Stock: 401474476404 Datasheet

MFR RecommendedRFQ

B82422T1472K000

EPCOS - TDK ElectronicsIn Stock: 25485B82422T1472K000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISC1210BN4R7K is determined by the following critical parameters:

• Inductance Value: Must be 4.7 µH with ±10% tolerance
• Current Rating: Must support minimum 220 mA
• Package / Case: Must be 1210 (3225 Metric) surface mount
• DC Resistance: Must not exceed 1.25Ohm maximum
• Operating Temperature Range: Must cover or exceed -55°C to 125°C

The identified substitute parts meet these core electrical and mechanical requirements. Variations in shielding type (shielded vs. unshielded), core material (iron powder vs. ferrite), and packaging format (bulk vs. tape & reel) represent acceptable trade-offs based on application-specific needs and supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

ISC1210BN4R7K (Vishay Dale): Select this part when shielded performance is required and RoHS non-compliance is acceptable. The iron powder core and shielded design provide superior EMI containment. Full temperature range support (-55°C to 125°C) accommodates demanding thermal environments.

74476404 (Würth Elektronik): This substitute is suitable for applications where RoHS3 compliance is mandatory and unshielded operation is acceptable. The ferrite core and unshielded design reduce cost and size. Note that the operating temperature range is limited to -40°C to 105°C, which excludes the lower temperature extreme of the original part. Tape & Reel packaging supports high-volume production workflows.

B82422T1472K000 (EPCOS - TDK): This substitute meets RoHS3 compliance and AEC-Q200 automotive qualification. The ferrite core and unshielded design are suitable for non-EMI-critical applications. Full temperature range support (-55°C to 125°C) matches the original part. Cut Tape packaging accommodates lower-volume or mixed-component assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I use an unshielded substitute in place of the shielded ISC1210BN4R7K?

A: Unshielded substitutes (74476404 and B82422T1472K000) are electrically compatible but differ in EMI performance. Shielded inductors contain magnetic field radiation, while unshielded designs allow field propagation. Use unshielded substitutes only in applications where EMI containment is not a design requirement.

Q: What is the impact of the higher DC resistance in substitute parts?

A: The substitute parts specify 1.5Ohm maximum DC resistance compared to 1.25Ohm for the original. This 0.25Ohm increase results in higher resistive losses and heat dissipation. For current-limited applications at 220 mA, this difference is typically acceptable but should be verified through thermal analysis if the circuit operates near maximum current ratings.

Q: Does the operating temperature range difference matter?

A: The 74476404 operates only to -40°C minimum, excluding the -55°C lower limit of the original part. If your application requires operation below -40°C, use either the ISC1210BN4R7K or B82422T1472K000. The B82422T1472K000 maintains the full -55°C to 125°C range.

Q: What packaging formats are available?

A: ISC1210BN4R7K is supplied in Bulk packaging. The 74476404 is available in Tape & Reel format for automated assembly. The B82422T1472K000 is supplied in Cut Tape format. Select packaging based on your assembly process and volume requirements.

Q: Are the substitute parts RoHS compliant?

A: The original ISC1210BN4R7K is RoHS non-compliant. Both substitute parts (74476404 and B82422T1472K000) are ROHS3 compliant. If your application or market requires RoHS compliance, use either substitute part.

Q: What is the significance of AEC-Q200 qualification?

A: The B82422T1472K000 carries AEC-Q200 automotive qualification, indicating it meets automotive reliability and quality standards. This certification is relevant only for automotive or safety-critical applications. For general industrial or consumer applications, this certification is not a selection criterion.