ISC1210SY4R7K Equivalent & Substitute Parts

Part Overview

The ISC1210SY4R7K is a 4.7 µH shielded drum core wirewound inductor manufactured by Vishay Dale, designed for surface mount applications in the 1210 (3225 Metric) package. This component operates at 220 mA current rating with a maximum DC resistance of 1.25 Ohm and is rated for operating temperatures from -55°C to 125°C. The part is currently active in production with 1019 units in stock. Substitute parts are necessary when shielding requirements differ, when alternative packaging formats are required, or when compliance certifications become critical for specific applications.

Key Parameters

Parameter	Value
Inductance	4.7 µH
Tolerance	±10%
Current Rating	220 mA
DC Resistance (Max)	1.25 Ohm
Shielding	Shielded
Core Material	Iron Powder
Package Type	1210 (3225 Metric)
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Q @ 7.96 MHz	30
Self Resonant Frequency	52 MHz

Substitute Part Grouping Explanation

Substitution eligibility for the ISC1210SY4R7K is determined by the following critical parameters: inductance value (4.7 µH), tolerance (±10%), current rating (220 mA), package dimensions (1210/3225 Metric), and operating temperature range (-55°C to 125°C). The substitute parts listed maintain identical inductance, tolerance, current rating, and package footprint. However, substitutes differ in shielding configuration (unshielded versus shielded), core material composition (ferrite versus iron powder), DC resistance specification (1.5 Ohm maximum versus 1.25 Ohm maximum), and packaging format (tape & reel versus cut tape). These differences are permissible within the substitution framework when the application does not require electromagnetic shielding and can tolerate the specified DC resistance variance.

Parameter Comparison

Parameter	ISC1210SY4R7K (Main)	74476404 (Würth Elektronik)	B82422T1472K000 (EPCOS - TDK)
Manufacturer	Vishay Dale	Würth Elektronik	EPCOS - TDK Electronics
Inductance	4.7 µH	4.7 µH	4.7 µH
Tolerance	±10%	±10%	±10%
Current Rating	220 mA	220 mA	220 mA
DC Resistance (Max)	1.25 Ohm	1.5 Ohm	1.5 Ohm
Shielding	Shielded	Unshielded	Unshielded
Core Material	Iron Powder	Ferrite	Ferrite
Q @ 7.96 MHz	30	30	30
Operating Temperature	-55°C to 125°C	-40°C to 105°C	-55°C to 125°C
Package / Case	1210 (3225 Metric)	1210 (3225 Metric)	2-SMD, J-Lead (1210 Metric)
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Inventory Availability	1019 Pcs	4000 Pcs	25439 Pcs

Engineering Selection Recommendations

The ISC1210SY4R7K remains the primary selection when shielded inductance performance is required and RoHS non-compliance is acceptable for the application. The Würth Elektronik 74476404 is suitable for applications where electromagnetic shielding is not critical, ROHS3 compliance is required, and the operating temperature range of -40°C to 105°C is sufficient. This substitute offers higher inventory availability (4000 units) and maintains tape & reel packaging. The EPCOS - TDK Electronics B82422T1472K000 is the optimal selection for automotive and high-reliability applications requiring AEC-Q200 certification, ROHS3 compliance, and the extended operating temperature range of -55°C to 125°C. This part features the highest inventory availability (25439 units) but is supplied in cut tape format rather than tape & reel. The B82422T1472K000 also provides the lowest seated height at 0.083 inches, which may be advantageous for space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 74476404 replace the ISC1210SY4R7K in all applications?

A: The 74476404 is compatible when the application does not require electromagnetic shielding. Both parts maintain identical inductance (4.7 µH), tolerance (±10%), current rating (220 mA), and package footprint (1210/3225 Metric). However, the operating temperature range differs: the 74476404 operates from -40°C to 105°C, while the ISC1210SY4R7K operates from -55°C to 125°C. Verify temperature requirements before substitution.

Q: What is the significance of the DC resistance difference between the main part and substitutes?

A: The ISC1210SY4R7K specifies a maximum DC resistance of 1.25 Ohm, while both substitute parts specify 1.5 Ohm maximum. This 0.25 Ohm difference affects power dissipation and thermal performance. Applications sensitive to resistive losses should account for this variance in thermal calculations.

Q: Why is the EPCOS - TDK Electronics B82422T1472K000 supplied in cut tape format?

A: The B82422T1472K000 is supplied in cut tape (CT) packaging rather than tape & reel (TR). This format is typical for high-volume automotive and industrial applications with AEC-Q200 certification. Verify that your assembly process can accommodate cut tape format before selecting this substitute.

Q: Are the shielded and unshielded versions electrically equivalent?

A: Both shielded and unshielded versions maintain the same inductance value (4.7 µH), tolerance (±10%), and Q factor (30 @ 7.96 MHz). The shielding difference affects electromagnetic coupling to adjacent components. Unshielded versions (74476404 and B82422T1472K000) are suitable for applications where crosstalk is not a concern.

Q: Which substitute offers the best compliance profile?

A: Both substitute parts are ROHS3 compliant, while the ISC1210SY4R7K is RoHS non-compliant. The EPCOS - TDK Electronics B82422T1472K000 additionally carries AEC-Q200 certification, making it the preferred choice for automotive applications requiring formal reliability qualification.

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