ISC1210ERR33K Equivalent & Substitute Parts

Part Overview

The ISC1210ERR33K is a 330 nH shielded drum core wirewound inductor manufactured by Vishay Dale, designed for surface mount applications in the 1210 (3225 Metric) package. This component operates across a temperature range of -55°C to 125°C with a current rating of 475 mA and a maximum DC resistance of 360 mOhm. The part is currently active in production and maintains full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and package class.

Substiute Parts

ISC1210ERR33K

Vishay DaleIn Stock: 970ISC1210ERR33K Datasheet

Current PartRFQ

CMH322522-R33ML

Bourns Inc.In Stock: 3103CMH322522-R33ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISC1210ERR33K is determined by the following criteria:

• Inductance value must be 330 nH with tolerance sufficient to maintain circuit performance
• Package / Case must be 1210 (3225 Metric) for mechanical and electrical compatibility
• Current rating must meet or exceed 475 mA to support the application load
• DC resistance must not exceed 360 mOhm to maintain acceptable power dissipation characteristics
• Shielding configuration must be shielded to preserve electromagnetic isolation
• Operating temperature range must encompass -55°C to 125°C
• Mounting type must be Surface Mount for PCB assembly compatibility
• RoHS3 compliance is required for regulatory alignment

The CMH322522-R33ML from Bourns Inc. qualifies as a substitute based on these parameters, with the following considerations: the inductance tolerance is ±20% (wider than the original ±10%), the current rating is 450 mA (25 mA lower than the original 475 mA), and the DC resistance is 400 mOhm (40 mOhm higher than the original 360 mOhm maximum). These variations remain within acceptable substitution boundaries for equivalent circuit function.

Parameter Comparison

Engineering Selection Recommendations

Both the ISC1210ERR33K and CMH322522-R33ML maintain active product status and full RoHS3 compliance. The primary electrical differences are the inductance tolerance (±10% vs. ±20%), current rating (475 mA vs. 450 mA), and DC resistance (360 mOhm vs. 400 mOhm). The core material differs (Iron Powder vs. Ferrite), resulting in different Q factors and self-resonant frequencies. Selection between these parts should be based on the specific circuit requirements for tolerance, current headroom, and loss characteristics. Both components are suitable for applications requiring shielded 330 nH inductance in the 1210 package with surface mount assembly.

Frequently Asked Questions (FAQ)

Q: Can the CMH322522-R33ML replace the ISC1210ERR33K in all applications?

A: The CMH322522-R33ML is mechanically and electrically compatible for most applications. However, circuits with tight inductance tolerance requirements (better than ±20%) or those operating near the 475 mA current limit may require evaluation of the substitute's ±20% tolerance and 450 mA rating.

Q: What is the impact of the different core materials?

A: The ISC1210ERR33K uses Iron Powder core material, while the CMH322522-R33ML uses Ferrite. This results in different Q factors (40 vs. 30 at 25.2 MHz) and self-resonant frequencies (280 MHz vs. 300 MHz). Applications sensitive to high-frequency performance or loss characteristics should account for these differences.

Q: Are both parts available in the same package?

A: Yes, both parts are available in the 1210 (3225 Metric) surface mount package with identical footprint dimensions (0.126" L x 0.098" W), ensuring direct PCB compatibility.

Q: What are the compliance and regulatory considerations?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: How do the DC resistance values affect circuit performance?

A: The ISC1210ERR33K has a maximum DC resistance of 360 mOhm, while the CMH322522-R33ML is rated at 400 mOhm. In high-current applications, the 40 mOhm difference results in approximately 0.9 mW additional power dissipation at 450 mA, which may be significant in thermally constrained designs.