1008HS-122EKFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HS-122EKFS is a 1.2 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, designed for surface mount applications in the 1008 (2520 Metric) package. This component operates at 600 mA current rating with 550mOhm DC resistance and is rated for -40°C to 85°C operating temperature range.

The 1008HS-122EKFS carries an obsolete product status. Identifying equivalent 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-122EKFS

Delta Electronics/ComponentsIn Stock: 11411008HS-122EKFS Datasheet

Current PartRFQ

PM1008-1R2K-RC

Bourns Inc.In Stock: 6742PM1008-1R2K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HS-122EKFS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 1.2 µH
• Inductance tolerance: ±10%
• Package / Case: 1008 (2520 Metric)
• Core type: Ferrite, Drum Core, Wirewound
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variations:

• Current Rating: Substitute must meet or exceed 600 mA requirement
• DC Resistance (DCR): Substitute must not exceed 550mOhm
• Operating Temperature Range: Substitute must support minimum -40°C ~ 85°C range
• Q @ Frequency: Substitute must maintain Q ≥ 25 @ test frequency
• Self Resonant Frequency: Substitute must exceed 230 MHz

The PM1008-1R2K-RC from Bourns Inc. qualifies as a substitute part based on matching inductance, tolerance, package, core type, shielding, and mounting specifications.

Parameter Comparison

Engineering Selection Recommendations

The PM1008-1R2K-RC from Bourns Inc. serves as a functional substitute for the obsolete 1008HS-122EKFS based on the following engineering criteria:

Compliance and Certification Alignment: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards.

Electrical Parameter Considerations: The PM1008-1R2K-RC maintains identical inductance (1.2 µH) and tolerance (±10%), with matching Q factor (25) at comparable test frequencies (7.9 MHz vs. 7.96 MHz). The substitute exhibits a higher self-resonant frequency (250 MHz vs. 230 MHz), which extends the usable frequency range.

Current and Resistance Trade-offs: The PM1008-1R2K-RC is rated for 280 mA current versus the original 600 mA specification. The substitute also exhibits higher DC resistance (2Ohm vs. 550mOhm). These parameter differences require circuit-level evaluation to determine suitability for specific applications.

Temperature Performance: The PM1008-1R2K-RC supports an extended operating temperature range (-40°C ~ 125°C) compared to the original part (-40°C ~ 85°C), providing additional thermal margin in applications requiring elevated temperature operation.

Product Availability: The PM1008-1R2K-RC maintains active product status with 6681 pieces in stock inventory, ensuring reliable supply chain availability compared to the obsolete 1008HS-122EKFS.

Frequently Asked Questions (FAQ)

Q: Can the PM1008-1R2K-RC directly replace the 1008HS-122EKFS in all applications?

A: Direct substitution requires circuit-level analysis. While both parts share identical inductance, tolerance, package, and core specifications, the PM1008-1R2K-RC exhibits lower current rating (280 mA vs. 600 mA) and higher DC resistance (2Ohm vs. 550mOhm). Applications operating at or near 600 mA current levels require verification that the substitute's 280 mA rating remains adequate. Similarly, the increased DCR may affect circuit performance in applications sensitive to inductor losses.

Q: What are the physical package differences between these parts?

A: Both inductors use the 1008 (2520 Metric) surface mount package. The PM1008-1R2K-RC exhibits slightly smaller physical dimensions (0.098" L x 0.079" W vs. 0.115" L x 0.110" W) and lower seated height (0.071" vs. 0.083"), allowing potential PCB layout optimization. Both parts maintain identical mounting type and footprint compatibility.

Q: Are there compliance or certification concerns with substitution?

A: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings. No compliance barriers exist for substitution in applications subject to these standards. The PM1008-1R2K-RC supports an extended operating temperature range (-40°C ~ 125°C), providing additional thermal margin compared to the original specification.

Q: What packaging format differences exist between the original and substitute?

A: The 1008HS-122EKFS is supplied in bulk packaging, while the PM1008-1R2K-RC is supplied in Tape & Reel (TR) format. This difference affects component handling, automated assembly compatibility, and inventory management. TR packaging is standard for high-volume surface mount production environments.

Q: How do the frequency characteristics compare?

A: Both parts maintain identical Q factor (25) at comparable test frequencies (7.96 MHz vs. 7.9 MHz). The PM1008-1R2K-RC exhibits a higher self-resonant frequency (250 MHz vs. 230 MHz), extending the usable frequency range by approximately 8.7%. This characteristic may provide performance benefits in high-frequency applications.