ISC1210SY1R0K Equivalent & Substitute Parts

Part Overview

The ISC1210SY1R0K is a 1 µH shielded drum core wirewound inductor manufactured by Vishay Dale, rated for 400 mA with a maximum DC resistance of 600 mOhm. This component is designed for surface mount applications in the 1210 (3225 Metric) package format and operates across the temperature range of -55°C to 125°C. The part is currently active in production with 2000 pieces available in stock. Equivalent and substitute parts are identified based on matching core electrical specifications: inductance value, current rating, package dimensions, and frequency characteristics.

Substiute Parts

ISC1210SY1R0K

Vishay DaleIn Stock: 2075ISC1210SY1R0K Datasheet

Current PartRFQ

74476401

Würth ElektronikIn Stock: 217874476401 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISC1210SY1R0K are identified based on the following core electrical and mechanical parameters:

• Inductance value: 1 µH (exact match required)
• Current rating: 400 mA (minimum requirement)
• Package format: 1210 (3225 Metric) surface mount
• Frequency test point: 7.96 MHz
• Tolerance: ±10%

The substitute part 74476401 (Würth Elektronik WE-GF series) matches these primary specifications. Differences in secondary parameters such as core material (ferrite vs. iron powder), shielding configuration, DC resistance tolerance, and operating temperature range are noted but do not prevent functional substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

The ISC1210SY1R0K and 74476401 are functionally equivalent for applications requiring 1 µH inductance at 400 mA. Both parts maintain identical inductance, tolerance, current rating, and Q factor at the test frequency of 7.96 MHz.

Selection between these parts depends on application-specific requirements:

The ISC1210SY1R0K is suitable for applications requiring shielded construction, extended low-temperature operation (-55°C), and iron powder core characteristics. This part is RoHS non-compliant.

The 74476401 is suitable for applications where RoHS3 compliance is required, unshielded construction is acceptable, and operating temperature range of -40°C to 105°C is sufficient. The ferrite core and higher self-resonant frequency (340 MHz vs. 120 MHz) may provide advantages in specific high-frequency applications.

Both parts are currently active in production with adequate inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 74476401 directly replace the ISC1210SY1R0K in all applications?

A: Direct replacement is possible when the application does not require shielded construction, operates within the -40°C to 105°C temperature range, and does not mandate RoHS non-compliance. The 100 mOhm increase in maximum DC resistance (700 mOhm vs. 600 mOhm) must be evaluated against circuit design tolerances.

Q: What is the impact of the shielding difference?

A: The ISC1210SY1R0K features shielded construction, which reduces electromagnetic interference emission and susceptibility. The 74476401 is unshielded. Shielding requirements depend on circuit layout, adjacent component placement, and EMI specifications of the application.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts use the 1210 (3225 Metric) package with nearly identical footprints. Dimensions are 0.126" L x 0.098" W with maximum seated heights of 0.095" and 0.094" respectively. PCB layout compatibility is confirmed.

Q: What is the significance of the different self-resonant frequencies?

A: The ISC1210SY1R0K has a self-resonant frequency of 120 MHz, while the 74476401 is 340 MHz. This difference reflects the core material composition (iron powder vs. ferrite). Applications operating near or above these frequencies may exhibit different impedance characteristics.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance status does not affect the electrical performance of the inductor itself. It indicates manufacturing process compliance with hazardous substance restrictions. Selection based on RoHS status depends on end-product regulatory requirements.