1812-154K Equivalent & Substitute Parts

Part Overview

The API Delevan Inc. 1812-154K is a fixed unshielded ferrite-core inductor rated at 150 µH inductance with a maximum DC resistance of 9 Ω and current rating of 149 mA. This component is active in production and widely available in inventory. Finding alternative models becomes necessary when specific tolerance requirements, RoHS compliance, or alternative sourcing are required for manufacturing continuity and supply chain flexibility.

Substiute Parts

1812-154K

API Delevan Inc.In Stock: 9301812-154K Datasheet

Current PartRFQ

1812-154J

API Delevan Inc.In Stock: 19851812-154J Datasheet

DirectRFQ

CM453232-151JL

Bourns Inc.In Stock: 2902CM453232-151JL Datasheet

SimilarRFQ

CM453232-151KL

Bourns Inc.In Stock: 3120CM453232-151KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 1812-154K is determined by the following critical parameters: identical inductance value (150 µH), matching package footprint (1812 / 4532 Metric), compatible current rating capability, maximum DC resistance not exceeding 9 Ω, and operating temperature range that includes the -55°C to 125°C specification.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer - API Delevan): The 1812-154J maintains identical electrical specifications and physical dimensions, with the primary distinction being tighter inductance tolerance (±5% versus ±10%). This part is pin-compatible and functionally interchangeable.

Cross-Manufacturer Alternatives (Bourns): The CM453232-151JL and CM453232-151KL represent functionally equivalent alternatives from Bourns Inc. These parts match the inductance value, package size, DC resistance limit, and operating temperature range. However, they feature reduced current rating (105 mA versus 149 mA), different core construction type (drum core wirewound), and improved RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

For designs requiring identical performance characteristics: Select the 1812-154J. It is manufactured by the same supplier (API Delevan Inc.), maintains an active product status, provides tighter inductance tolerance (±5%), supports the full -55°C to 125°C operating range, and offers the highest current rating at 149 mA. This selection provides direct interchangeability.

For designs with reduced current requirements and RoHS compliance mandates: The CM453232-151JL and CM453232-151KL represent viable options. Both are ROHS3 compliant and manufactured by Bourns Inc. with active product status. The CM453232-151JL is recommended for applications requiring tighter tolerance (±5%), while CM453232-151KL accommodates designs accepting ±10% tolerance. Both support 105 mA maximum current and are packaged identically to the main part.

For applications with lower temperature floor requirements: The Bourns components operate to -40°C minimum, eliminating the need for the full -55°C specification. This represents an acceptable trade-off when RoHS compliance is mandatory.

Frequently Asked Questions (FAQ)

Q: Can the 1812-154J be used directly in place of the 1812-154K? A: Yes. Both parts are 150 µH unshielded ferrite inductors in the 1812 package with identical current ratings (149 mA) and DC resistance (9 Ω maximum). The 1812-154J provides tighter tolerance (±5%) and operates across the identical temperature range (-55°C to 125°C).

Q: What is the primary difference between the API Delevan and Bourns substitute inductors? A: The Bourns CM45 series inductors utilize drum core wirewound construction compared to the ferrite core design of the API Delevan parts. Additionally, the Bourns inductors have a reduced current rating of 105 mA (versus 149 mA) and a minimum operating temperature of -40°C (versus -55°C). However, both Bourns options are ROHS3 compliant, whereas the API Delevan parts are not RoHS compliant.

Q: Can I substitute a Bourns part in an application designed for the 1812-154K if my circuit only requires 100 mA? A: The 105 mA current rating of the CM453232-151JL and CM453232-151KL is sufficient for circuits designed for 100 mA operation. However, verify that your application does not require the full -55°C lower temperature specification, as the Bourns inductors are rated only to -40°C.

Q: How do the self-resonant frequencies differ among these parts? A: The API Delevan inductors (1812-154K and 1812-154J) have a self-resonant frequency of 6 MHz, while the Bourns inductors (CM453232-151JL and CM453232-151KL) have a self-resonant frequency of 5 MHz. This difference may be relevant for high-frequency circuit applications where resonant behavior affects performance.

Q: What packaging formats are available for these inductors? A: The API Delevan 1812-154K and 1812-154J are supplied in Tape & Reel format. The Bourns CM453232-151JL is also supplied in Tape & Reel format. The CM453232-151KL is supplied in Cut Tape and Digi-Reel® packaging, offering flexibility for lower-volume or custom assembly requirements.

Q: Are there inventory availability differences among these substitute parts? A: Inventory levels vary: the 1812-154K has 919 units in stock, the 1812-154J has 1906 units, the CM453232-151JL has 2882 units, and the CM453232-151KL has 3100 units available. The Bourns parts demonstrate higher inventory availability.