S1812-392K Equivalent & Substitute Parts Reference

Part Overview

The S1812-392K is a fixed surface mount inductor manufactured by API Delevan Inc. in the S1812 series. This shielded ferrite core inductor is rated for 3.9 µH inductance with a maximum DC resistance of 840mOhm and supports a current rating of 487 mA. The component operates across a temperature range of -55°C to 125°C and is packaged in the 1812 (4532 Metric) form factor for automated assembly via tape and reel packaging.

The S1812-392K maintains Active product status. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, compliance requirements, or specific application needs while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

S1812-392K

API Delevan Inc.In Stock: 930S1812-392K Datasheet

Current PartRFQ

S1812R-392K

API Delevan Inc.In Stock: 1772S1812R-392K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1812-392K are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic requires exact matching of the following parameters:

• Inductance value: 3.9 µH with ±10% tolerance
• Current rating: 487 mA minimum
• DC resistance: 840mOhm maximum
• Core material: Ferrite with shielding
• Package form factor: 1812 (4532 Metric)
• Physical dimensions: 0.177" L x 0.126" W with maximum seated height of 0.134"
• Operating temperature range: -55°C to 125°C
• Q factor and self-resonant frequency characteristics
• Surface mount configuration with tape and reel packaging

Parts meeting these criteria are classified as direct substitutes capable of fulfilling identical circuit functions without design modification.

Parameter Comparison

Engineering Selection Recommendations

The S1812-392K and S1812R-392K are electrically and mechanically equivalent components. Both parts maintain identical inductance, current rating, DC resistance, frequency characteristics, and physical dimensions. Both are manufactured by API Delevan Inc. and remain in Active product status.

The primary distinction between these parts is RoHS compliance status. The S1812R-392K is ROHS3 compliant, while the S1812-392K is RoHS non-compliant. Selection between these parts depends on application requirements and regulatory obligations. Applications subject to RoHS3 regulations require the S1812R-392K variant. Applications without RoHS compliance requirements may utilize either part based on availability and supply chain considerations.

Both parts are packaged identically in tape and reel format suitable for automated assembly processes. Both maintain unlimited moisture sensitivity level (MSL 1) and are classified under identical ECCN and HTSUS codes.

Frequently Asked Questions (FAQ)

Q: Can the S1812R-392K directly replace the S1812-392K in existing designs?

A: Yes. The S1812R-392K is electrically and mechanically equivalent to the S1812-392K. All critical parameters including inductance, current rating, DC resistance, frequency characteristics, and physical dimensions are identical. No circuit design modifications are required for substitution.

Q: What is the difference between S1812-392K and S1812R-392K?

A: The primary difference is RoHS compliance status. The S1812R-392K is ROHS3 compliant, while the S1812-392K is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements. For applications subject to RoHS3 regulations, specify the S1812R-392K. For applications without RoHS compliance mandates, either part is suitable based on availability.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical dimensions of 0.177" L x 0.126" W (4.50mm x 3.20mm) with a maximum seated height of 0.134" (3.40mm). Both are packaged in the 1812 (4532 Metric) form factor.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes. Both parts are supplied in identical tape and reel packaging suitable for automated pick-and-place assembly. No equipment or process modifications are required for substitution.

Q: What is the operating temperature range for both parts?

A: Both the S1812-392K and S1812R-392K operate across the temperature range of -55°C to 125°C.

Q: Are there any compliance or certification differences?

A: Both parts maintain identical REACH Unaffected status, EAR99 ECCN classification, and 8504.50.8000 HTSUS code. The only compliance difference is RoHS status as noted above.