1008HC-332EKFS Surface Mount Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The 1008HC-332EKFS is a 3.3 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components in the 1008 (2520 Metric) surface mount package. This component is rated for 450 mA continuous current with 750 mOhm DC resistance and operates across the -40°C to 85°C temperature range. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

1008HC-332EKFS

Delta Electronics/ComponentsIn Stock: 11501008HC-332EKFS Datasheet

Current PartRFQ

AISC-1008F-3R3K-T (2K/REEL)

Abracon LLCIn Stock: 2909AISC-1008F-3R3K-T (2K/REEL) Datasheet

DirectRFQ

PM1008-3R3K-RC

Bourns Inc.In Stock: 2704PM1008-3R3K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-332EKFS is determined by the following mandatory parameters:

Primary Matching Criteria:

• Inductance value: 3.3 µH (±10% tolerance)
• Package designation: 1008 (2520 Metric) surface mount
• Core material: Ferrite drum core, unshielded configuration
• Mounting type: Surface mount technology

Secondary Compatibility Factors:

• Current rating must equal or exceed 450 mA
• DC resistance must be within acceptable operating limits for the application
• Operating temperature range must encompass -40°C to 85°C minimum
• RoHS3 compliance and MSL rating of 1 (Unlimited)

Two substitute parts meet these criteria with varying degrees of parameter alignment. The AISC-1008F-3R3K-T from Abracon LLC provides direct current rating equivalence at 450 mA. The PM1008-3R3K-RC from Bourns Inc. offers reduced current rating at 185 mA, requiring application-level verification of current requirements.

Parameter Comparison

Engineering Selection Recommendations

AISC-1008F-3R3K-T (Abracon LLC) - Primary Substitute

The AISC-1008F-3R3K-T provides the closest functional equivalence to the obsolete 1008HC-332EKFS. This part maintains identical inductance, tolerance, current rating, and package specifications. The component is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. The increased DC resistance (1.7 Ohm Max versus 750 mOhm) represents the primary parameter deviation and must be evaluated within the specific circuit application to confirm thermal and efficiency requirements are satisfied. Abracon LLC maintains active inventory of 2860 pieces in Cut Tape and Digi-Reel packaging formats.

PM1008-3R3K-RC (Bourns Inc.) - Secondary Substitute

The PM1008-3R3K-RC from Bourns Inc. matches the inductance, tolerance, core type, and package specifications of the original part. This component is in active production with ROHS3 compliance and unlimited MSL rating. The current rating of 185 mA is significantly reduced compared to the 450 mA specification of the 1008HC-332EKFS. This substitute is suitable only for applications where the circuit current requirement does not exceed 185 mA. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin beyond the original specification. Bourns maintains active inventory of 2662 pieces in Tape & Reel packaging.

Frequently Asked Questions (FAQ)

Q: Can the AISC-1008F-3R3K-T directly replace the 1008HC-332EKFS without circuit modification?

A: The AISC-1008F-3R3K-T matches all primary electrical and mechanical parameters including inductance, current rating, package, and operating temperature range. The increased DC resistance (1.7 Ohm Max versus 750 mOhm) must be evaluated for impact on circuit performance, power dissipation, and thermal management. No physical modification is required for PCB assembly.

Q: What is the significance of the DC resistance difference between the original part and substitutes?

A: DC resistance directly affects power dissipation and circuit efficiency. The original 1008HC-332EKFS specifies 750 mOhm, while the AISC-1008F-3R3K-T specifies 1.7 Ohm Max and the PM1008-3R3K-RC specifies 1.9 Ohm. Higher DC resistance increases I²R losses. Applications sensitive to power dissipation or thermal performance require circuit-level analysis to confirm the substitute is acceptable.

Q: Is the PM1008-3R3K-RC suitable for all applications using the 1008HC-332EKFS?

A: The PM1008-3R3K-RC is suitable only for applications where the maximum circuit current does not exceed 185 mA. The original part is rated for 450 mA continuous current. Exceeding the current rating of the substitute will result in inductor saturation and performance degradation. Verify circuit current requirements before selecting this alternative.

Q: Are all three parts compatible with the same PCB footprint?

A: All three parts use the 1008 (2520 Metric) surface mount package designation. Physical dimensions vary slightly: the original 1008HC-332EKFS has a maximum seated height of 0.083" (2.10 mm), the AISC-1008F-3R3K-T has 0.090" (2.29 mm), and the PM1008-3R3K-RC has 0.071" (1.80 mm). These variations are within typical PCB assembly tolerances for surface mount components. Verify PCB clearance specifications if height-constrained applications are present.

Q: What is the compliance status of the substitute parts?

A: Both substitute parts are ROHS3 compliant and carry MSL rating of 1 (Unlimited), matching the original part specifications. Both are classified as REACH Unaffected and carry ECCN designation EAR99. Compliance documentation is equivalent across all three parts.

Q: Why is the original 1008HC-332EKFS classified as obsolete?

A: The 1008HC-332EKFS is listed as obsolete by Delta Electronics/Components. Active production alternatives from Abracon LLC and Bourns Inc. provide equivalent or superior specifications with ongoing manufacturing support and inventory availability.