1812-184J Fixed Inductor Equivalent & Substitute Parts

Part Overview

The 1812-184J is a fixed unshielded inductor manufactured by API Delevan Inc., designed for surface mount applications. This component delivers 180 µH inductance with a 145 mA current rating and 9.5Ohm maximum DC resistance in a compact 1812 (4532 Metric) package form factor. The part is currently in active production status. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, compliance requirements, or design revision cycles while maintaining electrical and mechanical compatibility.

Substiute Parts

1812-184J

API Delevan Inc.In Stock: 7871812-184J Datasheet

Current PartRFQ

1812R-184J

API Delevan Inc.In Stock: 13911812R-184J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812-184J is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Inductance value: 180 µH
• Inductance tolerance: ±5%
• Current rating: 145 mA minimum
• DC resistance: 9.5Ohm maximum
• Q factor: 40 @ 790kHz
• Self resonant frequency: 5MHz
• Operating temperature range: -55°C ~ 125°C

Mechanical Parameters (Must Match Exactly):

• Package type: 1812 (4532 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm)
• Maximum seated height: 0.134" (3.40mm)

Material Parameters (Must Match Exactly):

• Core material: Ferrite
• Shielding configuration: Unshielded

Substitute parts must satisfy all electrical, mechanical, and material specifications without deviation to ensure direct interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The 1812R-184J qualifies as a direct electrical and mechanical substitute for the 1812-184J. Both components are manufactured by API Delevan Inc. and share identical electrical specifications, physical dimensions, and performance characteristics across all critical parameters including inductance, current rating, DC resistance, Q factor, and operating temperature range.

The primary distinction between these parts is regulatory compliance status. The 1812-184J carries RoHS non-compliant designation, while the 1812R-184J is ROHS3 compliant. Both parts maintain identical REACH unaffected status and EAR99 export classification.

Selection between these parts should be based on applicable regulatory requirements for the end application. Applications subject to RoHS3 compliance mandates require the 1812R-184J. Applications without RoHS compliance requirements may utilize either part based on supply availability and inventory considerations.

Frequently Asked Questions (FAQ)

Q: Can the 1812R-184J be used as a direct replacement for the 1812-184J in existing designs?

A: Yes. The 1812R-184J is electrically and mechanically identical to the 1812-184J across all specified parameters. Both components deliver 180 µH inductance, 145 mA current rating, 9.5Ohm maximum DC resistance, and occupy the same 1812 (4532 Metric) package footprint. Direct substitution is supported without circuit modification.

Q: What is the difference between the 1812-184J and 1812R-184J?

A: The primary difference is RoHS compliance status. The 1812-184J is RoHS non-compliant, while the 1812R-184J is ROHS3 compliant. All electrical performance, mechanical dimensions, and thermal specifications are identical between the two parts.

Q: Are there any package or footprint differences between these inductors?

A: No. Both the 1812-184J and 1812R-184J use the identical 1812 (4532 Metric) surface mount package with matching physical dimensions of 0.177" L x 0.126" W (4.50mm x 3.20mm) and maximum seated height of 0.134" (3.40mm). PCB footprints and assembly processes are interchangeable.

Q: Which part should I specify for new designs?

A: Selection depends on regulatory requirements applicable to your end application. For designs subject to RoHS3 compliance mandates, specify the 1812R-184J. For applications without RoHS compliance requirements, either part is acceptable based on supply chain and cost considerations.

Q: Do these inductors have identical thermal performance?

A: Yes. Both parts operate across the identical temperature range of -55°C ~ 125°C and share identical Q factor specifications of 40 @ 790kHz and self resonant frequency of 5MHz.

Q: What is the moisture sensitivity level for these parts?

A: Both the 1812-184J and 1812R-184J carry MSL 1 (Unlimited) designation, indicating unlimited shelf life without moisture control requirements.