1210-103K Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The 1210-103K is a fixed unshielded inductor manufactured by API Delevan Inc., rated at 10 µH inductance with a maximum current rating of 297 mA and 2.1 Ohm maximum DC resistance. The component is housed in a surface-mount 1210 (3225 Metric) package and is classified as Active product status. This part is RoHS non-compliant and operates across the temperature range of -55°C to 125°C. Substitute parts are necessary when product availability is limited, packaging requirements differ, or when compliance specifications must be updated for specific applications.

Substiute Parts

1210-103K

API Delevan Inc.In Stock: 8341210-103K Datasheet

Current PartRFQ

CM322522-100JL

Bourns Inc.In Stock: 11998CM322522-100JL Datasheet

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CM322522-100KL

Bourns Inc.In Stock: 2227CM322522-100KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1210-103K is evaluated based on the following critical parameters: inductance value (10 µH), unshielded ferrite core construction, surface-mount configuration, DC resistance specification (2.1 Ohm maximum), and operating temperature range compatibility. The identified substitute parts—CM322522-100JL and CM322522-100KL (both manufactured by Bourns Inc.)—match the primary inductance and DC resistance specifications. However, these substitutes present reduced current rating (140 mA versus 297 mA) and operate within a narrower temperature range (-40°C to 125°C versus -55°C to 125°C). The substitute parts employ drum core, wirewound construction versus the standard ferrite construction of the main part. Packaging differs: CM322522-100JL is supplied in Tape & Reel format, while CM322522-100KL is supplied in Cut Tape and Digi-Reel format.

Parameter Comparison

Engineering Selection Recommendations

The 1210-103K and its substitute parts (CM322522-100JL and CM322522-100KL) all maintain Active product status with continuous manufacturer support. The Bourns substitutes offer RoHS3 compliance, whereas the API Delevan main part is non-compliant; this distinction is significant for applications requiring environmental compliance certifications. The substitutes are functionally equivalent for inductance and DC resistance parameters. However, the reduced current rating of the Bourns parts (140 mA) represents a critical limitation compared to the 1210-103K's 297 mA specification. The substitutes also require elevated moisture sensitivity management (MSL 3 versus MSL 1) and operate within a reduced lower-temperature boundary (-40°C minimum versus -55°C minimum). Component selection must account for application-specific current demands and operating temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can CM322522-100JL or CM322522-100KL directly replace the 1210-103K? A: Both Bourns parts match the 10 µH inductance and 2.1 Ohm DC resistance specifications. Substitution is conditionally valid only if the application operates within the -40°C to 125°C temperature range and does not exceed 140 mA current. If the circuit requires the full 297 mA current capability, these substitutes are not suitable.

Q: What is the difference between CM322522-100JL and CM322522-100KL? A: Both parts are electrically identical with matching inductance (10 µH), tolerance (±10%), current rating (140 mA), and DC resistance (2.1 Ohm max). The primary difference is packaging: CM322522-100JL is supplied in Tape & Reel format, while CM322522-100KL is supplied in Cut Tape and Digi-Reel format. CM322522-100JL features ±5% tolerance compared to ±10% tolerance on CM322522-100KL.

Q: Are there dimensional compatibility concerns with the substitutes? A: The substitute parts (Bourns CM322522 series) employ nonstandard package designations versus the standard 1210 (3225 Metric) package of the main part. Both substitutes measure 0.126" L × 0.098" W (3.20mm × 2.50mm) with a maximum seated height of 0.087" (2.20mm), compared to the main part's 0.128" L × 0.095" W (3.25mm × 2.42mm) with 0.101" (2.57mm) maximum height. Dimensional differences are minimal and typically accommodated within standard PCB layout tolerances.

Q: What compliance considerations apply to these substitutes? A: The API Delevan 1210-103K is RoHS non-compliant, while both Bourns substitutes (CM322522-100JL and CM322522-100KL) are ROHS3 compliant. Applications subject to RoHS requirements must use the Bourns substitutes. Both the main part and substitutes carry REACH Unaffected status and are classified under ECCN EAR99 export classification.

Q: Do moisture sensitivity levels differ between these parts? A: The 1210-103K carries MSL 1 (Unlimited moisture exposure), while both Bourns substitutes carry MSL 3 (168-hour moisture exposure limit). Handling and storage procedures must account for the elevated moisture sensitivity of the substitute parts. Baking may be required prior to reflow soldering if the parts exceed moisture exposure time limits.