P1812-472K Equivalent & Substitute Parts

Part Overview

The P1812-472K is a fixed unshielded surface mount inductor manufactured by API Delevan Inc. with an inductance value of 4.7 µH, rated for 650 mA continuous current, and a maximum DC resistance of 401 mOhm. The component is housed in a 1812 (4532 Metric) package and operates across the temperature range of -55°C to 125°C. This part is currently active in production with 1094 pieces available in new original stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct functional replacement in circuit applications.

Substiute Parts

P1812-472K

API Delevan Inc.In Stock: 1118P1812-472K Datasheet

Current PartRFQ

P1812R-472K

API Delevan Inc.In Stock: 15580P1812R-472K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P1812-472K are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Electrical Parameters:

• Inductance value: 4.7 µH
• Inductance tolerance: ±10%
• Current rating: 650 mA minimum
• Saturation current (Isat): 1.131 A minimum
• DC resistance: 401 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Parameters:

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

Environmental Parameters:

• Operating temperature range: -55°C to 125°C
• Moisture sensitivity level: 1 (Unlimited)

Parts meeting all these criteria are classified as direct substitutes and can be used interchangeably in circuit designs without modification to PCB layout or component footprint.

Parameter Comparison

Engineering Selection Recommendations

The P1812R-472K is a direct electrical and mechanical equivalent to the P1812-472K. Both parts are manufactured by API Delevan Inc. and share identical electrical specifications, physical dimensions, and operating characteristics. The primary distinction between these parts is regulatory compliance status.

P1812-472K is RoHS non-compliant and suitable for applications where RoHS compliance is not required or where legacy component specifications must be maintained.

P1812R-472K is ROHS3 compliant and is the appropriate selection for applications subject to RoHS3 regulations or where compliance with current environmental standards is mandated. This part maintains full electrical and mechanical compatibility with the P1812-472K while meeting modern regulatory requirements.

Both parts carry active product status and are available from stock. Selection between these two parts should be based solely on the regulatory compliance requirements of the end application and the target market region.

Frequently Asked Questions (FAQ)

Q: Can P1812R-472K be used as a direct replacement for P1812-472K in existing designs?

A: Yes. The P1812R-472K is electrically and mechanically identical to the P1812-472K. All electrical parameters, physical dimensions, and performance characteristics are equivalent. No PCB layout modifications or design changes are required for substitution.

Q: What is the difference between P1812-472K and P1812R-472K?

A: The primary difference is RoHS compliance status. The P1812-472K is RoHS non-compliant, while the P1812R-472K is ROHS3 compliant. All other specifications, including inductance, current rating, DC resistance, package dimensions, and operating temperature range, are identical.

Q: Are both parts available in the same packaging format?

A: Yes. Both P1812-472K and P1812R-472K are supplied in Tape & Reel (TR) packaging and are compatible with automated assembly equipment. The physical package dimensions and mounting footprint are identical.

Q: Which part should be selected for new designs?

A: For new designs, the P1812R-472K is the recommended selection due to its ROHS3 compliance status, which aligns with current regulatory standards and environmental requirements. The P1812-472K should be reserved for legacy applications or situations where RoHS non-compliance is explicitly required.

Q: Do these parts have the same saturation current rating?

A: Yes. Both parts have an identical saturation current (Isat) rating of 1.131 A, ensuring equivalent performance under high-current transient conditions.

Q: Are there any temperature or frequency limitations that differ between these parts?

A: No. Both parts operate across the identical temperature range of -55°C to 125°C and are tested at 1 kHz inductance frequency. There are no differences in thermal or frequency performance characteristics.