ELJ-PB181KF Equivalent & Substitute Parts

Part Overview

The ELJ-PB181KF is a 180 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 110 mA maximum current with 7.5Ohm DC resistance in a 1812 (4532 Metric) surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

ELJ-PB181KF

Panasonic Electronic ComponentsIn Stock: 1046ELJ-PB181KF Datasheet

Current PartRFQ

P1812R-184K

API Delevan Inc.In Stock: 1111P1812R-184K Datasheet

DirectRFQ

CC453232-181KL

Bourns Inc.In Stock: 3632CC453232-181KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELJ-PB181KF is determined by the following critical parameters:

• Inductance value: 180 µH (±10% tolerance maintained)
• Package / Case: 1812 (4532 Metric) surface mount form factor
• Physical dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm), Height 0.134" (3.40mm)
• Shielding configuration: Unshielded
• Current rating: Minimum 110 mA
• DC resistance: Within acceptable operating limits for the application

Two substitute parts meet these criteria and are identified as direct or similar equivalents based on matching inductance, package, and electrical performance within specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence status of the ELJ-PB181KF.

P1812R-184K (API Delevan Inc.) provides a direct functional equivalent with identical inductance and package specifications. Current rating is increased to 120 mA, exceeding the original 110 mA requirement. DC resistance is 8.4Ohm Max, representing a 0.9Ohm increase from the original specification. This part is ROHS3 compliant and operates across an extended temperature range of -55°C ~ 125°C. Saturation current is specified at 158mA.

CC453232-181KL (Bourns Inc.) offers the closest electrical match, maintaining the original 7.5Ohm Max DC resistance specification while providing 120 mA current rating. This part is classified as a drum core wirewound inductor with ferrite core material. ROHS3 compliance and REACH unaffected status are confirmed. Operating temperature range extends to -40°C ~ 125°C. Q factor and self-resonant frequency data are provided at 20 @ 796kHz and 6.5MHz respectively.

Both substitutes maintain identical physical dimensions and package form factor, ensuring PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can P1812R-184K be used as a direct replacement for ELJ-PB181KF?

A: Yes. Both parts share identical inductance (180 µH), tolerance (±10%), package (1812), and physical dimensions. The P1812R-184K current rating of 120 mA exceeds the original 110 mA specification. DC resistance increases from 7.5Ohm to 8.4Ohm Max, which must be evaluated against circuit performance requirements.

Q: What is the difference between P1812R-184K and CC453232-181KL?

A: Both are 180 µH inductors in 1812 packages with 120 mA current ratings. CC453232-181KL maintains the original 7.5Ohm Max DC resistance, while P1812R-184K specifies 8.4Ohm Max. CC453232-181KL is identified as a drum core wirewound design; P1812R-184K core material is ferrite. Temperature operating ranges differ: P1812R-184K operates -55°C ~ 125°C; CC453232-181KL operates -40°C ~ 125°C.

Q: Are there package or mounting compatibility concerns?

A: No. All three parts use identical 1812 (4532 Metric) surface mount packages with matching physical dimensions (0.177" L x 0.126" W, 0.134" height). PCB footprints and reflow profiles remain unchanged.

Q: Which substitute part should be selected for new designs?

A: Selection depends on circuit requirements. If DC resistance must remain at 7.5Ohm Max, CC453232-181KL is the appropriate choice. If extended low-temperature operation below -40°C is required, P1812R-184K supports -55°C minimum. Both parts are ROHS3 compliant and actively manufactured.

Q: Are compliance certifications available for the substitute parts?

A: Both P1812R-184K and CC453232-181KL are ROHS3 compliant. CC453232-181KL is additionally confirmed as REACH unaffected. Both carry ECCN EAR99 classification. Moisture sensitivity level is 1 (Unlimited) for all three parts.