IDCS7328ER331M Equivalent & Substitute Parts

Part Overview

The IDCS7328ER331M is a 330 µH shielded drum core wirewound inductor manufactured by Vishay Dale, rated for 860 mA continuous current with a maximum DC resistance of 780 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 871 pieces available in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

IDCS7328ER331M

Vishay DaleIn Stock: 948IDCS7328ER331M Datasheet

Current PartRFQ

ASPI-1306S-331M-T

Abracon LLCIn Stock: 753ASPI-1306S-331M-T Datasheet

MFR RecommendedRFQ

SRR1208-331KL

Bourns Inc.In Stock: 351314SRR1208-331KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IDCS7328ER331M are qualified based on the following electrical and mechanical parameters:

• Inductance value: 330 µH (exact match required)
• Current rating: minimum 850 mA
• DC resistance: maximum 780 mOhm
• Core type: Ferrite, shielded drum core wirewound
• Mounting: Surface mount
• Compliance: ROHS3 compliant
• Moisture sensitivity: MSL 1 or better
• Operating temperature range: minimum -40°C to 85°C

The ASPI-1306S-331M-T from Abracon LLC and SRR1208-331KL from Bourns Inc. meet these substitution criteria with matching inductance, current handling capability, and core construction. Dimensional variations and tolerance differences are acceptable within the scope of equivalent component selection.

Parameter Comparison

Engineering Selection Recommendations

All three inductors—IDCS7328ER331M, ASPI-1306S-331M-T, and SRR1208-331KL—are active production components with ROHS3 compliance and MSL 1 rating. The IDCS7328ER331M and SRR1208-331KL both support the full operating temperature range of -40°C to 125°C, while the ASPI-1306S-331M-T operates to 85°C maximum. The SRR1208-331KL offers improved DC resistance performance at 650 mOhm maximum and tighter inductance tolerance at ±10%, compared to the 780 mOhm and ±20% specifications of the primary part. Selection should be based on application temperature requirements and available inventory.

Frequently Asked Questions (FAQ)

Q: Can ASPI-1306S-331M-T be used in applications requiring operation above 85°C?

A: No. The ASPI-1306S-331M-T is rated to 85°C maximum. For applications requiring -40°C to 125°C operation, use IDCS7328ER331M or SRR1208-331KL.

Q: What is the significance of the tighter ±10% tolerance on SRR1208-331KL?

A: The SRR1208-331KL provides inductance tolerance of ±10% compared to ±20% on the primary part and ASPI-1306S-331M-T. This tighter tolerance may be beneficial for applications with strict inductance specifications.

Q: Are there dimensional differences between these parts?

A: Yes. IDCS7328ER331M and ASPI-1306S-331M-T share identical dimensions of 0.730" L x 0.600" W (18.54mm x 15.24mm) with 0.300" (7.62mm) seated height. SRR1208-331KL has smaller footprint dimensions of 0.500" L x 0.500" W (12.70mm x 12.70mm) with 0.335" (8.50mm) seated height.

Q: Is the lower DC resistance of SRR1208-331KL a direct advantage?

A: Lower DC resistance (650 mOhm vs. 780 mOhm) reduces resistive losses and heat generation. This is advantageous in power-sensitive applications but does not affect basic substitution eligibility.

Q: What packaging formats are available?

A: IDCS7328ER331M and ASPI-1306S-331M-T are supplied in Tape & Reel (TR) format. SRR1208-331KL is available in Cut Tape (CT) and Digi-Reel® format.