IDCS7328ER221M Equivalent & Substitute Parts

Part Overview

The IDCS7328ER221M is a 220 µH shielded drum core wirewound inductor manufactured by Vishay Dale, rated for 1.1 A continuous current with a maximum DC resistance of 470mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 683 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

IDCS7328ER221M

Vishay DaleIn Stock: 773IDCS7328ER221M Datasheet

Current PartRFQ

SRR1208-221KL

Bourns Inc.In Stock: 2776SRR1208-221KL Datasheet

MFR RecommendedRFQ

SRR1806-221M

Bourns Inc.In Stock: 1728SRR1806-221M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IDCS7328ER221M are qualified based on the following electrical and mechanical criteria:

• Inductance value: 220 µH (exact match required)
• Core type: Ferrite drum core, wirewound, shielded construction
• Current rating: Minimum 1.0 A continuous current
• DC resistance: Within acceptable operating parameters for the application
• Saturation current: Sufficient margin above rated current
• Operating temperature: -40°C to 125°C minimum
• Compliance: ROHS3 and REACH requirements maintained
• Mounting: Surface mount configuration

The two qualified substitutes meet these criteria while offering variations in tolerance, DC resistance, and physical dimensions that may provide advantages in specific circuit implementations.

Parameter Comparison

Engineering Selection Recommendations

All three inductors maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial applications. The IDCS7328ER221M and SRR1806-221M share identical saturation current ratings of 1.9 A and matching inductance tolerance of ±20%, providing direct functional equivalence. The SRR1208-221KL offers tighter inductance tolerance at ±10% with lower DC resistance of 380mOhm, though saturation current is reduced to 1.45 A. Physical dimensions vary across all three parts; PCB layout and thermal management considerations should guide selection based on available board space and thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can SRR1208-221KL be used as a direct replacement for IDCS7328ER221M?

A: The SRR1208-221KL meets the core electrical requirements of 220 µH inductance and 1.1 A current rating. However, the saturation current is 1.45 A compared to 1.9 A in the original part, and the physical footprint is significantly smaller (12.70mm x 12.70mm versus 18.54mm x 15.24mm). PCB layout compatibility and thermal performance must be evaluated for your specific application.

Q: What is the difference in DC resistance between these parts?

A: The IDCS7328ER221M has a maximum DC resistance of 470mOhm, the SRR1208-221KL is 380mOhm, and the SRR1806-221M is 510mOhm. Lower DC resistance reduces power dissipation and heat generation. Selection depends on thermal budget and efficiency requirements of the circuit.

Q: Are all three parts suitable for -40°C to 125°C operation?

A: Yes, all three inductors are rated for the full -40°C to 125°C operating temperature range and maintain ROHS3 compliance across this range.

Q: Does inductance tolerance affect substitution?

A: The SRR1208-221KL offers ±10% tolerance compared to ±20% for both the IDCS7328ER221M and SRR1806-221M. Tighter tolerance may be beneficial in precision circuits but is not required for basic functional substitution.

Q: What packaging differences exist between these parts?

A: The IDCS7328ER221M and SRR1806-221M are supplied in Tape & Reel (TR) packaging, while the SRR1208-221KL is supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging selection affects procurement and assembly processes but does not impact electrical performance.