1210-123K Equivalent & Substitute Parts

Part Overview

The 1210-123K is a fixed unshielded inductor manufactured by API Delevan Inc., rated at 12 µH with a maximum current capacity of 272 mA and DC resistance of 2.5Ohm. This component is designed for surface mount applications in the 1210 (3225 Metric) package format. The part maintains active product status and operates across the temperature range of -55°C to 125°C. Substitute parts are identified to provide alternative sourcing options when the primary component becomes unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

1210-123K

API Delevan Inc.In Stock: 10291210-123K Datasheet

Current PartRFQ

CM322522-120KL

Bourns Inc.In Stock: 11161CM322522-120KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1210-123K is determined by the following critical parameters:

Inductance value must match at 12 µH with ±10% tolerance. DC resistance must not exceed 2.5Ohm maximum. Core material must be ferrite-based. Shielding configuration must remain unshielded. Operating temperature range must encompass or equal the specified -55°C to 125°C window. Mounting type must be surface mount. Physical package dimensions must be compatible with 1210 (3225 Metric) footprint specifications.

The CM322522-120KL from Bourns Inc. qualifies as a substitute based on matching inductance, DC resistance, core material, shielding type, and mounting configuration. Dimensional compatibility is maintained within acceptable tolerances for the 1210 footprint.

Parameter Comparison

Engineering Selection Recommendations

The CM322522-120KL presents a functional substitute for the 1210-123K with the following considerations based on provided specifications:

Electrical parameters for inductance, tolerance, and DC resistance are identical between both parts. The Bourns CM322522-120KL achieves ROHS3 compliance, whereas the API Delevan 1210-123K is RoHS non-compliant. Both components maintain MSL 1 rating and REACH unaffected status.

Current rating differs between the two parts: the 1210-123K supports 272 mA while the CM322522-120KL is rated for 125 mA. This difference must be evaluated against circuit requirements. Operating temperature range for the CM322522-120KL begins at -40°C, compared to -55°C for the 1210-123K. Applications requiring operation below -40°C require the primary part.

Physical dimensions are compatible within 1210 footprint tolerances. The CM322522-120KL exhibits lower seated height at 0.087" versus 0.101" for the 1210-123K.

Frequently Asked Questions (FAQ)

Q: Can the CM322522-120KL replace the 1210-123K in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 125 mA and operating temperature remains above -40°C. The 1210-123K must be retained for applications requiring 272 mA current capacity or operation at temperatures below -40°C.

Q: Are the physical dimensions compatible?

A: Both parts are designed for the 1210 (3225 Metric) footprint. Dimensional variations (0.128" vs 0.126" length, 0.095" vs 0.098" width) fall within acceptable PCB layout tolerances. Height difference (0.101" vs 0.087") may affect clearance in space-constrained designs.

Q: What is the impact of RoHS compliance differences?

A: The CM322522-120KL meets ROHS3 compliance requirements, while the 1210-123K does not. Selection depends on regulatory requirements for the end application and target markets.

Q: Do both parts have identical electrical characteristics?

A: Inductance, tolerance, DC resistance, and Q factor are equivalent. Self-resonant frequency differs slightly (28MHz vs 33MHz). Both maintain identical MSL 1 and REACH unaffected status.

Q: What determines substitution eligibility?

A: Matching inductance value, DC resistance specification, ferrite core material, unshielded configuration, surface mount type, and 1210 package compatibility are the primary substitution criteria. Current rating and temperature range must be verified against specific circuit requirements.