NLC453232T-331K Equivalent & Substitute Parts

Part Overview

The NLC453232T-331K is a 330 µH unshielded drum core wirewound inductor manufactured by TDK Corporation, rated for 90 mA with a maximum DC resistance of 13Ohm. This component is designed for surface mount applications in the 1812 (4532 Metric) package format. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts maintain the core electrical specifications while offering improved availability, compliance status, or enhanced performance characteristics.

Substiute Parts

NLC453232T-331K

TDK CorporationIn Stock: 920NLC453232T-331K Datasheet

Current PartRFQ

B82432T1334K000

EPCOS - TDK ElectronicsIn Stock: 8293B82432T1334K000 Datasheet

MFR RecommendedRFQ

CM453232-331JL

Bourns Inc.In Stock: 2444CM453232-331JL Datasheet

MFR RecommendedRFQ

CM453232-331KL

Bourns Inc.In Stock: 3431CM453232-331KL Datasheet

MFR RecommendedRFQ

LQH43CN331K03L

Murata ElectronicsIn Stock: 2251LQH43CN331K03L Datasheet

MFR RecommendedRFQ

P1812-334K

API Delevan Inc.In Stock: 835P1812-334K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NLC453232T-331K are qualified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH with tolerance ±10% or better
• Package / Case: 1812 (4532 Metric) form factor
• Core type: Ferrite, unshielded drum core construction
• Mounting type: Surface mount

Secondary Compatibility Parameters:

• Current rating: Equal to or greater than 90 mA
• DC resistance: Acceptable within application-specific limits
• Physical dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm)
• Moisture sensitivity level: MSL 1 (Unlimited)

All substitute parts listed meet these core requirements and maintain electrical and mechanical compatibility with the original NLC453232T-331K specification.

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes (Active Status with RoHS3 Compliance):

B82432T1334K000 (EPCOS - TDK Electronics): This part offers the highest current rating at 120 mA with improved DC resistance of 11Ohm Max. It carries AEC-Q200 automotive qualification and ROHS3 compliance. Extended operating temperature range (-55°C ~ 150°C) provides superior thermal performance. Packaging is 2-SMD, J-Lead format with identical footprint dimensions.

CM453232-331JL and CM453232-331KL (Bourns Inc.): Both variants maintain 330 µH inductance with 85 mA current rating and 14Ohm Max DC resistance. CM453232-331JL offers ±5% tolerance (tighter than original ±10%). Both are ROHS3 compliant with active product status and extended operating temperature to 125°C. CM453232-331KL is available in Cut Tape & Digi-Reel packaging.

Alternative Substitute (Lower DCR Performance):

LQH43CN331K03L (Murata Electronics): This part provides the lowest DC resistance at 6.8Ohm Max with 100 mA current rating, offering superior power efficiency. ROHS3 compliant with identical package dimensions. Note: Product status is discontinued at DiGi Electronics; verify availability before selection.

Non-Compliant Alternative:

P1812-334K (API Delevan Inc.): Maintains 90 mA current rating matching the original specification. RoHS non-compliant status limits use to legacy or non-regulated applications. Higher DC resistance at 15.24Ohm Max compared to original 13Ohm.

Frequently Asked Questions (FAQ)

Q: Can I use B82432T1334K000 as a direct replacement for NLC453232T-331K?

A: Yes. Both parts maintain 330 µH inductance in the 1812 (4532 Metric) package. B82432T1334K000 provides higher current rating (120 mA vs. 90 mA) and lower DC resistance (11Ohm vs. 13Ohm), making it electrically superior. The 2-SMD, J-Lead package format is compatible with standard 1812 footprints.

Q: What is the difference between CM453232-331JL and CM453232-331KL?

A: Both parts are electrically identical with 330 µH inductance, 85 mA current rating, and 14Ohm Max DC resistance. The primary difference is packaging: CM453232-331JL is supplied in Tape & Reel (TR) format, while CM453232-331KL is supplied in Cut Tape (CT) & Digi-Reel format. CM453232-331JL offers tighter inductance tolerance at ±5% versus CM453232-331KL at ±10%.

Q: Why does LQH43CN331K03L have lower DC resistance than other substitutes?

A: LQH43CN331K03L achieves 6.8Ohm Max DC resistance through different core material composition and winding design while maintaining the same 330 µH inductance value. This lower resistance reduces power dissipation and heat generation in the inductor, beneficial for applications sensitive to thermal performance.

Q: Is the height difference of LQH43CN331K03L (0.110" vs. 0.134") a concern?

A: The reduced height of LQH43CN331K03L (2.80mm vs. 3.40mm) provides additional PCB clearance and may improve thermal dissipation in space-constrained designs. This is not a compatibility issue; the part remains within the 1812 (4532 Metric) package specification.

Q: Which substitute offers the best compliance for new designs?

A: B82432T1334K000, CM453232-331JL, CM453232-331KL, and LQH43CN331K03L all carry ROHS3 compliance. B82432T1334K000 additionally carries AEC-Q200 automotive qualification, making it the preferred choice for regulated or automotive applications.

Q: Can I use P1812-334K in a new design?

A: P1812-334K maintains electrical compatibility but carries RoHS non-compliant status. Use is restricted to legacy applications or non-regulated markets. For new designs subject to RoHS requirements, select from the ROHS3-compliant alternatives.

Q: What is the impact of different operating temperature ranges?

A: The original NLC453232T-331K operates -40°C ~ 85°C. Substitutes with extended ranges (-55°C ~ 150°C for B82432T1334K000 or -40°C ~ 125°C for Bourns parts) provide greater thermal margin. Select based on application requirements; extended range does not negatively impact performance in standard temperature environments.