1210-122K Equivalent & Substitute Parts

Part Overview

The 1210-122K is a fixed surface mount inductor manufactured by API Delevan Inc., rated at 1.2 µH inductance with a maximum current rating of 497 mA and 750mOhm DC resistance. This unshielded ferrite core inductor operates across the temperature range of -55°C to 125°C and is classified as an active product. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications while maintaining performance requirements.

Substiute Parts

1210-122K

API Delevan Inc.In Stock: 10011210-122K Datasheet

Current PartRFQ

CM322522-1R2KL

Bourns Inc.In Stock: 10698CM322522-1R2KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1210-122K is determined by the following critical parameters:

• Inductance Value: Must be 1.2 µH with ±10% tolerance
• DC Resistance: Must not exceed 750mOhm
• Current Rating: Substitute must support minimum 215 mA (lower current ratings are acceptable for lower-demand applications)
• Core Material: Ferrite core construction
• Shielding Configuration: Unshielded
• Mounting Type: Surface mount
• Self Resonant Frequency: 100MHz minimum
• Operating Temperature Range: Must cover at least -40°C to 125°C

The substitute part CM322522-1R2KL meets these criteria with equivalent inductance, matching DC resistance specification, and compatible thermal operating range, though with a reduced current rating of 215 mA.

Parameter Comparison

Engineering Selection Recommendations

1210-122K (API Delevan Inc.) is the primary component for applications requiring the full 497 mA current rating and extended low-temperature operation down to -55°C. This part maintains active product status and is suitable for high-current inductor applications.

CM322522-1R2KL (Bourns Inc.) serves as a substitute for applications where current requirements do not exceed 215 mA and operating temperature range of -40°C to 125°C is acceptable. This substitute offers ROHS3 compliance, providing environmental regulatory advantage. The nonstandard package designation and reduced height (2.20mm vs. 2.57mm) require PCB layout verification for mechanical clearance and thermal management compatibility.

Selection between these parts depends on circuit current demands and regulatory compliance requirements. The API Delevan part is mandatory for high-current applications; the Bourns part is suitable only when current load remains below 215 mA.

Frequently Asked Questions (FAQ)

Q: Can CM322522-1R2KL replace 1210-122K in all applications?

A: No. The Bourns substitute is limited to applications where circuit current does not exceed 215 mA. If your design requires the full 497 mA rating, the API Delevan 1210-122K is required.

Q: What is the impact of the operating temperature range difference?

A: The 1210-122K operates from -55°C to 125°C, while CM322522-1R2KL operates from -40°C to 125°C. If your application requires operation below -40°C, the API Delevan part is necessary.

Q: Are the physical dimensions compatible?

A: The parts have similar footprints (3.25mm x 2.42mm vs. 3.20mm x 2.50mm), but the Bourns part is shorter (2.20mm vs. 2.57mm). PCB layout must accommodate the height difference to prevent mechanical interference.

Q: What is the significance of the package designation difference?

A: The 1210-122K uses standard 1210 (3225 Metric) packaging, while CM322522-1R2KL is designated as nonstandard. This requires verification that your PCB assembly process and pick-and-place equipment support the Bourns package specification.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance is a regulatory consideration, not an electrical substitution criterion. The 1210-122K is RoHS non-compliant, while CM322522-1R2KL is ROHS3 compliant. Selection depends on your product's regulatory requirements.

Q: Are the inductance and DC resistance specifications identical?

A: Yes. Both parts specify 1.2 µH inductance with ±10% tolerance and 750mOhm maximum DC resistance, ensuring electrical equivalence in these critical parameters.