Equivalent & Substitute Parts for 1812-102K

Part Overview

The 1812-102K is a fixed inductor manufactured by API Delevan Inc. with a nominal inductance of 1 µH, rated for 634 mA continuous current, and maximum DC resistance of 500 mOhm. This unshielded ferrite-core inductor in 1812 (4532 metric) surface-mount package is actively manufactured and suitable for RF and general-purpose filtering applications. Alternative models are identified when design requirements necessitate different performance characteristics, compliance certifications, or inventory constraints.

Substiute Parts

1812-102K

API Delevan Inc.In Stock: 14671812-102K Datasheet

Current PartRFQ

CM453232-1R0JL

Bourns Inc.In Stock: 2347CM453232-1R0JL Datasheet

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CM453232-1R0KL

Bourns Inc.In Stock: 10246CM453232-1R0KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts must satisfy the following criteria based on allowed electrical and mechanical parameters:

Mandatory Matching Parameters:

• Inductance: 1 µH
• Core Material: Ferrite
• Shielding: Unshielded
• Package / Case: 1812 (4532 Metric)
• DC Resistance (Max): 500 mOhm
• Self Resonant Frequency: 100 MHz

Allowable Variations:

• Current Rating: Substitute parts rated for 450 mA are acceptable where the design operating current does not exceed 450 mA
• Inductance Tolerance: Substitutes with ±5% tolerance meet or exceed the ±10% specification of the primary part
• Operating Temperature: Substitute parts rated -40°C ~ 125°C cover the critical upper range of the primary part specification
• RoHS Compliance: Substitute parts may offer improved compliance status (ROHS3 Compliant)

The Bourns CM453232-1R0JL and CM453232-1R0KL are qualified as substitutes based on matching all mandatory parameters while offering comparable electrical performance across the specified frequency range.

Parameter Comparison

Engineering Selection Recommendations

1812-102K (API Delevan Inc.) is the primary component specification and remains the preferred choice when:

• Current requirements exceed 450 mA
• Operating temperature range must extend to -55°C
• RoHS non-compliant design constraints apply

CM453232-1R0JL (Bourns Inc.) is suitable as a substitute when:

• Operating current does not exceed 450 mA
• ROHS3 compliance is required
• Tighter inductance tolerance (±5%) provides design margin benefits
• Operating temperature minimum of -40°C is acceptable

CM453232-1R0KL (Bourns Inc.) is suitable as a substitute when:

• Operating current does not exceed 450 mA
• ROHS3 compliance is required
• Inductance tolerance of ±10% matches the primary specification
• Operating temperature minimum of -40°C is acceptable

Both Bourns substitutes carry Active product status with superior inventory availability (2300 and 10200 units respectively) compared to the primary part (1392 units).

Frequently Asked Questions (FAQ)

Q: Can CM453232-1R0JL and CM453232-1R0KL be used interchangeably with 1812-102K? A: Direct substitution is limited by current rating. The 1812-102K is rated for 634 mA while both Bourns substitutes are rated for 450 mA maximum. Substitution is valid only when design operating current does not exceed 450 mA. Both Bourns parts are electrically equivalent across all other mandatory parameters (inductance, frequency response, package dimensions, and DC resistance).

Q: What is the difference between CM453232-1R0JL and CM453232-1R0KL? A: The primary difference is inductance tolerance. The CM453232-1R0JL offers ±5% tolerance compared to ±10% for the CM453232-1R0KL. Both parts share identical electrical performance at the specified test frequency, current rating, and operating temperature range. Selection depends on tolerance requirements for the application.

Q: Are the 1812 package dimensions identical across all three parts? A: Yes. All three parts conform to the 1812 (4532 metric) surface-mount package standard with dimensions of 0.177" L × 0.126" W (4.50 mm × 3.20 mm) and maximum seated height of 0.134" (3.40 mm). Board-level compatibility and pick-and-place machine settings are identical.

Q: How does the operating temperature range affect substitution decisions? A: The 1812-102K operates from -55°C to 125°C, while both Bourns substitutes operate from -40°C to 125°C. For applications requiring operation below -40°C, the API Delevan 1812-102K must be used. For applications operating within the -40°C to 125°C range, either Bourns substitute is suitable.

Q: What is the significance of ROHS3 compliance on the substitute parts? A: ROHS3 compliance is a regulatory certification indicating restriction of hazardous substances in electrical and electronic equipment. The primary 1812-102K is non-compliant, while both Bourns substitutes meet ROHS3 standards. If regulatory compliance is a design requirement, the Bourns parts provide this advantage at equivalent electrical performance and identical package footprint.

Q: Do the substitute parts have different core construction? A: Yes. The 1812-102K uses a standard ferrite core construction, while both Bourns substitutes employ drum core, wirewound construction. Both approaches achieve identical inductance, frequency response, and DC resistance specifications. The construction difference does not affect electrical or mechanical compatibility for this 1 µH inductor application.