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Product Detailed Parameters
- Description：CMC 51UH 230MA 2LN 2.8KOHM SMD
- Series：CM
- Mfr：Laird-Signal Integrity Products
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：230mA
- DC Resistance (DCR) (Max)：1Ohm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 150°C
- Ratings：AEC-Q200
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.177" L x 0.126" W (4.50mm x 3.00mm)
- Height (Max)：0.110" (2.80mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：51 µH @ 100 kHz
- Impedance @ Frequency：2.8 kOhms @ 10 MHz
- Qualification：-
- Grade：-
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Overview
The CM1812B513R-1A is a surface-mount common mode choke from the Laird CM Series, designed for automotive signal lines. It features a 51 µH inductance measured at 100 kHz and provides 2.8 kΩ impedance at 10 MHz. The component supports a maximum DC current of 230 mA with a maximum DC resistance of 1 Ω. Packaged in an 1812 (4532 metric) SMD footprint, it operates within a temperature range of -40°C to +125°C.
Feature Summary
- Engineered specifically for automotive signal line applications to enhance performance and reliability.
- Provides effective electromagnetic interference filtering through high impedance characteristics.
Applications
- Automotive CAN-Bus systems
- Signal line EMI filtering
- Automotive electronic circuits
Procurement Notes
Verify the manufacturer designation carefully, as some listings may incorrectly attribute this part to Qnity or other entities. Confirm the specific suffix '1A' matches your design requirements, as variations exist within the CM series. Ensure the source document explicitly identifies Laird-Signal Integrity Products as the manufacturer before procurement.
Selection Notes
Select this component when designing for automotive environments requiring robust signal integrity. The 1812 package size offers a compact solution for space-constrained PCB layouts. Verify that the 230 mA current rating meets the operational demands of the target signal line without saturation.
Part Context
This component belongs to the Laird CM Series, which includes variants like the CM1812C513R-10 and CM1812B113R-1A. These parts are categorized under Common Mode Chokes/Filters and Inductors, Chokes & Coils. The series is characterized by its focus on automotive-grade reliability and signal line protection.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official Laird catalogs for cross-referencing compatible components within the CM series.
