ISC1210EB3R3K Equivalent & Substitute Parts

Part Overview

The ISC1210EB3R3K is a 3.3 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 270 mA maximum current with 1.1Ohm maximum DC resistance and is rated for -55°C to 125°C operating temperature. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within specified parameter tolerances.

Substiute Parts

ISC1210EB3R3K

Vishay DaleIn Stock: 788ISC1210EB3R3K Datasheet

Current PartRFQ

74476403

Würth ElektronikIn Stock: 330774476403 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISC1210EB3R3K is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH with ±10% tolerance
• Package / Case: Must be 1210 (3225 Metric) for mechanical compatibility
• Current Rating: Must support minimum 260 mA operation
• DC Resistance: Must not exceed 1.2Ohm maximum
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must cover the application's required temperature window
• RoHS Compliance: Must maintain ROHS3 compliance status

The substitute part 74476403 (Würth Elektronik WE-GF series) meets these electrical and mechanical criteria within acceptable engineering tolerances, though with noted differences in shielding configuration and core material.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain ROHS3 compliance and Active product status. The ISC1210EB3R3K provides a wider operating temperature range (-55°C to 125°C) compared to 74476403 (-40°C to 105°C). Selection between these parts depends on application temperature requirements and electromagnetic interference (EMI) considerations. The ISC1210EB3R3K shielded configuration may be preferred in noise-sensitive applications, while the 74476403 unshielded design offers lower cost and equivalent electrical performance in non-EMI-critical circuits. Current rating difference (270 mA vs 260 mA) and DC resistance variance (1.1Ohm vs 1.2Ohm) are within acceptable engineering tolerances for most applications. Moisture sensitivity level differs; applications requiring extended storage or high-humidity environments should account for MSL rating differences.

Frequently Asked Questions (FAQ)

Q: Can 74476403 directly replace ISC1210EB3R3K in all applications?

A: Mechanical and electrical compatibility exists for inductance, tolerance, frequency response, and package dimensions. However, verify application requirements for operating temperature range, shielding necessity, and moisture sensitivity before substitution.

Q: What is the significance of shielding differences between these parts?

A: ISC1210EB3R3K is shielded; 74476403 is unshielded. Shielding reduces electromagnetic radiation and susceptibility to external fields. Applications requiring EMI suppression or operating in electromagnetically noisy environments should retain the shielded ISC1210EB3R3K.

Q: Are there current rating implications for substitution?

A: ISC1210EB3R3K is rated 270 mA; 74476403 is rated 260 mA. For applications operating near maximum current specifications, verify that 260 mA rating is sufficient. The 10 mA difference may be critical in high-current designs.

Q: How do core material differences affect performance?

A: ISC1210EB3R3K uses iron powder core; 74476403 uses ferrite core. Both achieve identical Q factor (30 @ 7.96MHz) and self-resonant frequency (60MHz). Core material differences primarily affect temperature stability, cost, and saturation characteristics not specified in provided parameters.

Q: What packaging format differences exist?

A: ISC1210EB3R3K is supplied in Bulk packaging; 74476403 is supplied in Tape & Reel (TR). Both use identical 1210 (3225 Metric) case. Packaging format affects handling, storage, and automated assembly compatibility, not electrical performance.

Q: Is temperature range a limiting factor for substitution?

A: ISC1210EB3R3K operates -55°C to 125°C; 74476403 operates -40°C to 105°C. Applications requiring full -55°C to 125°C range must use ISC1210EB3R3K. Applications within -40°C to 105°C window can use either part.