Equivalent & Substitute Parts for 1008HS-332EKFS

Part Overview

The 1008HS-332EKFS is a 3.3 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, designed for surface mount applications in the 1008 (2520 Metric) package. This component is rated for 350 mA continuous current with a DC resistance of 1.15 Ohm and operates across the temperature range of -40°C to 85°C.

The 1008HS-332EKFS carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

1008HS-332EKFS

Delta Electronics/ComponentsIn Stock: 7971008HS-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

Substitute parts for the 1008HS-332EKFS are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 3.3 µH (exact match required)
• Inductance tolerance: ±10% (matching tolerance band)
• Package / Case: 1008 (2520 Metric) (identical physical footprint)
• Core type: Ferrite, unshielded drum core (same construction)
• Mounting type: Surface mount (same assembly method)
• RoHS3 compliance and MSL 1 rating (regulatory and environmental compatibility)

Secondary Compatibility Factors:

• Current rating: Substitute parts must support the application's current requirements
• DC resistance: Variation affects circuit performance and thermal characteristics
• Operating temperature range: Must encompass or match the application environment

The substitute parts listed below maintain the core inductance specification and package compatibility while offering variations in current handling capability and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

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

The AISC-1008F-3R3K-T is classified as a direct substitute for the 1008HS-332EKFS. This part maintains identical inductance (3.3 µH), tolerance (±10%), package dimensions (1008 / 2520 Metric), and operating temperature range (-40°C to 85°C). The Abracon part carries active product status with ROHS3 compliance and MSL 1 rating, ensuring regulatory alignment and long-term availability.

The AISC-1008F-3R3K-T provides enhanced current handling capability at 450 mA compared to the original 350 mA specification. The increased DC resistance of 1.7 Ohm (versus 1.15 Ohm) represents a trade-off in thermal performance. This substitute is suitable for applications where the original current rating is adequate or where higher current capacity provides design margin.

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

The PM1008-3R3K-RC is classified as a similar substitute with the same inductance value (3.3 µH) and tolerance (±10%). This part is manufactured by Bourns Inc., an active producer with ROHS3 compliance and MSL 1 rating.

The PM1008-3R3K-RC exhibits a reduced current rating of 185 mA, which is lower than the original 350 mA specification. This part is suitable only for applications where the required current does not exceed 185 mA. The DC resistance of 1.9 Ohm is higher than both the original part and the Abracon substitute. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin for high-temperature environments. Physical dimensions are smaller (0.098" L x 0.079" W versus 0.115" L x 0.110" W), which may affect PCB layout compatibility.

Frequently Asked Questions (FAQ)

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

A: The AISC-1008F-3R3K-T maintains the same inductance value, tolerance, package footprint, and operating temperature range as the 1008HS-332EKFS. The increased current rating (450 mA versus 350 mA) and higher DC resistance (1.7 Ohm versus 1.15 Ohm) must be evaluated within the specific circuit application. If the circuit operates at or below 350 mA and can tolerate the increased DC resistance, direct substitution is feasible without modification.

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

A: The PM1008-3R3K-RC is suitable only for applications where the required current does not exceed 185 mA. The original 1008HS-332EKFS is rated for 350 mA, making the Bourns part unsuitable for higher-current applications. Additionally, the smaller physical dimensions may require PCB layout verification to ensure proper fit and thermal management.

Q: What is the impact of DC resistance variation on circuit performance?

A: DC resistance affects power dissipation and voltage drop across the inductor. The 1008HS-332EKFS has 1.15 Ohm DCR, while the AISC-1008F-3R3K-T has 1.7 Ohm and the PM1008-3R3K-RC has 1.9 Ohm. Higher DC resistance increases I²R losses and heat generation. Circuit designs sensitive to voltage drop or thermal performance must account for these differences during substitution evaluation.

Q: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. Both the AISC-1008F-3R3K-T and PM1008-3R3K-RC are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the regulatory and environmental specifications of the original 1008HS-332EKFS.

Q: What is the difference between the 1008 package dimensions listed for different manufacturers?

A: All parts are specified as 1008 (2520 Metric) package type. However, the PM1008-3R3K-RC exhibits smaller actual dimensions (0.098" L x 0.079" W) compared to the stated package specification. This variation may affect PCB footprint compatibility. Physical verification against PCB design files is recommended before implementation.

Q: Can the PM1008-3R3K-RC be used in applications requiring the full 350 mA current rating?

A: No. The PM1008-3R3K-RC is rated for 185 mA maximum continuous current, which is insufficient for applications requiring 350 mA. Using this part in higher-current applications will result in exceeding the component's current rating and may cause premature failure or thermal damage.