1812-563J Equivalent and Substitute Parts

Part Overview

The 1812-563J is a 56 µH fixed unshielded surface mount inductor manufactured by API Delevan Inc. in the 1812 (4532 Metric) package format. This component is rated for 191 mA continuous current with a maximum DC resistance of 5.5 Ohm and operates across the temperature range of -55°C to 125°C. The part is currently in active production status with 1,092 units available in inventory. Finding equivalent substitutes becomes necessary when the primary part experiences supply constraints, when higher compliance standards are required, or when design flexibility across manufacturing batches is needed.

Key Parameters

Parameter	Value
Inductance	56 µH
Inductance Tolerance	±5%
Current Rating	191 mA
DC Resistance (Max)	5.5 Ohm
Q @ Frequency	50 @ 2.5 MHz
Self Resonant Frequency	9 MHz
Operating Temperature Range	-55°C ~ 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount
Core Material	Ferrite
Shielding	Unshielded

Substitute Part Grouping Explanation

The 1812-563J has one identified substitute: the 1812R-563J. This substitute relationship is established based on the following critical electrical and mechanical parameters:

Inductance Value: Both parts specify 56 µH with ±5% tolerance
Current Rating: Both rated for 191 mA continuous current
DC Resistance: Both specify maximum 5.5 Ohm DCR
Q Factor: Both specify 50 @ 2.5 MHz
Self Resonant Frequency: Both specify 9 MHz
Package Footprint: Both use 1812 (4532 Metric) surface mount package with identical dimensions (0.177" L × 0.126" W, height 0.134" max)
Core Material: Both use ferrite core construction
Shielding: Both are unshielded designs
Operating Temperature: Both support -55°C to 125°C range
Mounting: Both are surface mount compatible

The 1812R-563J series designation indicates a variant within the same electrical and mechanical specifications, making it a direct functional equivalent.

Parameter Comparison

Parameter	1812-563J	1812R-563J
Manufacturer	API Delevan Inc.	API Delevan Inc.
Inductance	56 µH	56 µH
Inductance Tolerance	±5%	±5%
Current Rating (Amps)	191 mA	191 mA
DC Resistance (Max)	5.5 Ohm	5.5 Ohm
Q @ Frequency	50 @ 2.5 MHz	50 @ 2.5 MHz
Self Resonant Frequency	9 MHz	9 MHz
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	1812 (4532 Metric)	1812 (4532 Metric)
Physical Dimensions (L × W)	0.177" × 0.126" (4.50mm × 3.20mm)	0.177" × 0.126" (4.50mm × 3.20mm)
Height (Max)	0.134" (3.40mm)	0.134" (3.40mm)
Core Material	Ferrite	Ferrite
Shielding	Unshielded	Unshielded
Mounting Type	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	RoHS3 Compliant
Product Status	Active	Active
Inventory Status	1,092 Pcs New Original In Stock	2,000 Pcs New Original In Stock

Engineering Selection Recommendations

Both the 1812-563J and 1812R-563J maintain identical electrical and mechanical specifications, confirming full functional interchangeability in circuit design. The primary distinction between these parts is compliance certification: the 1812R-563J achieves RoHS3 compliance, while the 1812-563J is RoHS non-compliant. Selection between these parts should be based on regulatory requirements and product compliance mandates. The 1812R-563J is the preferred choice for applications requiring RoHS3 compliance. Both parts maintain REACH Unaffected and EAR99 ECCN status. Inventory levels support both options, with the 1812R-563J currently offering higher stock availability (2,000 units vs. 1,092 units).

Frequently Asked Questions (FAQ)

Q: Can the 1812R-563J replace the 1812-563J in existing designs? A: Yes. All critical electrical parameters (inductance, current rating, DC resistance, Q factor, self-resonant frequency) and mechanical specifications (package, dimensions, mounting type) are identical. Direct PCB footprint compatibility is confirmed.

Q: What is the difference between the 1812-563J and 1812R-563J? A: The parts share identical electrical and mechanical characteristics. The primary difference is RoHS compliance status: 1812R-563J is RoHS3 Compliant, while 1812-563J is RoHS non-compliant. The "R" series designation indicates the RoHS-compliant variant.

Q: Are there package compatibility concerns when substituting? A: No. Both parts use the 1812 (4532 Metric) surface mount package with matching physical dimensions (0.177" L × 0.126" W) and maximum seated height (0.134"). PCB footprints are identical.

Q: Which part should I select for new designs? A: For new designs, the 1812R-563J is the recommended choice due to RoHS3 compliance, which aligns with current regulatory standards and long-term supplier commitments. It maintains the same electrical performance with superior compliance documentation.

Q: Will substituting parts affect circuit performance? A: No. The inductance value (56 µH ±5%), DC resistance (5.5 Ohm max), current rating (191 mA), Q factor (50 @ 2.5 MHz), and self-resonant frequency (9 MHz) are identical across both parts. Circuit behavior remains unchanged.

Q: What is the operating temperature range for both parts? A: Both the 1812-563J and 1812R-563J operate across -55°C to 125°C, supporting military, industrial, and commercial temperature specifications.

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